ini复制代码import com.google.common.collect.Lists;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.*;

public class Test {

    private static final ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(64, 64, 0, TimeUnit.MINUTES, new ArrayBlockingQueue<>(32));

    public static void main(String[] args) {
        List<Integer> list = new ArrayList<>();
        for (int i = 0; i < 400; i++) {
            list.add(i);
        }
        for (int i = 0; i < 100; i++) {
            List<List<Integer>> sublist = Lists.partition(list, 400 / 32);
            int n = sublist.size();
            CountDownLatch countDownLatch = new CountDownLatch(n);
            for (int j = 0; j < n; j++) {
                threadPoolExecutor.execute(() -> {
                    try {
                        Thread.sleep(1000);
                    } catch (Exception e) {
                        e.printStackTrace();
                    } finally {
                        countDownLatch.countDown();
                    }
                });
            }
            try {
                countDownLatch.await();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("===============>  详情任务 - 任务处理完成");
        }
        System.out.println("都执行完成了");
    }
}
/**
 * <dependency>
 *     <groupId>com.google.guava</groupId>
 *     <artifactId>guava</artifactId>
 *     <version>31.1-jre</version>
 * </dependency>
 */

java复制代码private static final ThreadPoolExecutor threadPoolExecutor =
        new ThreadPoolExecutor(64, 64, 0, TimeUnit.MINUTES,
                new ArrayBlockingQueue<>(32)) {
            @Override
            protected void afterExecute(Runnable r, Throwable t) {
                try {
                    Thread.sleep(5000);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        };

scss复制代码if(加锁成功){
    try{
        //save有事务注解，并且确认调用的service对象是被代理的对象,即事务的写法一定是正确的
        return service.save();
    } catch(Exception e){
        //异常打印   
    } finally {
        //释放锁
        unlock(lockKey);
    }
}

csharp复制代码@Service
public class ServiceOne{
    // 设置一把可重入的公平锁
    private Lock lock = new ReentrantLock(true);
    
    @Transactional(rollbackFor = Exception.class)
    public Result  func(long seckillId, long userId) {
        lock.lock();
        // 执行数据库操作——查询商品库存数量
        // 如果 库存数量 满足要求 执行数据库操作——减少库存数量——模拟卖出货物操作
        lock.unlock();
    }
}

typescript复制代码const PLUGIN_NAME = 'MiniSplitChunkPlugin'

export default class MiniSplitChunksPlugin extends SplitChunksPlugin {

   // 分包配置
  subPackages: SubPackage[]

  // 分包根路径
  subRoots: string[]

  // 分包根路径正则
  subRootRegExps: RegExp[]

  // ... 省略部分代码 ... 

  apply (compiler: any) {
    this.context = compiler.context

    // 获取分包配置
    this.subPackages = this.getSubpackageConfig(compiler).map((subPackage: SubPackage) => ({
      ...subPackage,
      root: this.formatSubRoot(subPackage.root) // 格式化根路径，去掉尾部的/
    }))

    // 获取分包根路径
    this.subRoots = this.subPackages.map((subPackage: SubPackage) => subPackage.root)

    // 生成分包根路径正则
    this.subRootRegExps = this.subRoots.map((subRoot: string) => new RegExp(`^${subRoot}\\/`))

    // ... 省略部分代码 ... 
  }

  // ... 省略部分代码 ...
}

javascript复制代码const PLUGIN_NAME = 'MiniSplitChunkPlugin'

export default class MiniSplitChunksPlugin extends SplitChunksPlugin {

  // 所有分包公共依赖
  subCommonDeps: Map<string, DepInfo>

  // 各个分包的公共依赖Map
  chunkSubCommons: Map<string, Set<string>>

  // 分包三方依赖
  subPackagesVendors: Map<string, webpack.compilation.Chunk>


  // ... 省略部分代码 ...

  apply (compiler: any) {

    // ... 省略部分代码 ...

    compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation: any) => {
      compilation.hooks.optimizeChunks.tap(PLUGIN_NAME, (chunks: webpack.compilation.Chunk[]) => {
        const splitChunksOriginConfig = {
          ...compiler?.options?.optimization?.splitChunks
        }

        this.subCommonDeps = new Map()
        this.chunkSubCommons = new Map()
        this.subPackagesVendors = new Map()

        /**
         * 找出分包入口chunks
         */
        const subChunks = chunks.filter(chunk => this.isSubChunk(chunk))

        // 不存在分包
        if (subChunks.length === 0) {
          this.options = SplitChunksPlugin.normalizeOptions(splitChunksOriginConfig)
          return
        }

        subChunks.forEach((subChunk: webpack.compilation.Chunk) => {
          subChunk.modulesIterable.forEach((module: any) => {
            // ... 省略部分代码 ...
            const chunks: webpack.compilation.Chunk[] = Array.from(module.chunksIterable)
            const chunkNames: string[] = chunks.map(chunk => chunk.name)
            /**
             * 找出没有被主包引用，且被多个分包引用的module，并记录在subCommonDeps中
             */
            if (!this.hasMainChunk(chunkNames) && this.isSubsDep(chunkNames)) {

              // 此处生成 subCommonDeps、subCommonDepChunks 用于生成新的cacheGroups配置
              // ... 省略部分代码 ...
            }
          })
        })

        /**
         * 用新的option配置生成新的cacheGroups配置
         */
        this.options = SplitChunksPlugin.normalizeOptions({
          ...splitChunksOriginConfig,
          cacheGroups: {
            ...splitChunksOriginConfig?.cacheGroups,
            ...this.getSubPackageVendorsCacheGroup(), 
            ...this.getSubCommonCacheGroup() // 该方法返回值基于 this.subCommonDeps 生成
          }
        })
      })

    })
  }
  // ... 省略部分代码 ...
}

typescript复制代码export default class MiniSplitChunksPlugin extends SplitChunksPlugin {

  // ... 省略部分代码 ...

  apply (compiler: any) {

    // ... 省略部分代码 ...

    compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation: any) => {

      // ... 省略部分代码 ...

      compilation.hooks.afterOptimizeChunks.tap(PLUGIN_NAME, (chunks: webpack.compilation.Chunk[]) => {
        const existSubCommonDeps = new Map()

        chunks.forEach(chunk => {
          const chunkName = chunk.name

          if (this.matchSubVendors(chunk)) {
            const subRoot = this.subRoots.find(subRoot => new RegExp(`^${subRoot}\\/`).test(chunkName)) as string

            this.subPackagesVendors.set(subRoot, chunk)
          }

          if (this.matchSubCommon(chunk)) {
            const depName = chunkName.replace(new RegExp(`^${this.subCommonDir}\\/(.*)`), '$1')

            if (this.subCommonDeps.has(depName)) {
              existSubCommonDeps.set(depName, this.subCommonDeps.get(depName))
            }
          }
        })

        this.setChunkSubCommons(existSubCommonDeps)
        // 这里收集了SplitChunksPlugin 完成 chunks 拆分后分包内的 subCommonDep（ps: 这里的赋值有点奇怪，因为后续的流程并没有使用）
        this.subCommonDeps = existSubCommonDeps
      })
    }
                                   }
  
  setChunkSubCommons (subCommonDeps: Map<string, DepInfo>) {
    const chunkSubCommons: Map<string, Set<string>> = new Map()

    subCommonDeps.forEach((depInfo: DepInfo, depName: string) => {
      const chunks: string[] = [...depInfo.chunks]

      chunks.forEach(chunk => {
        if (chunkSubCommons.has(chunk)) {
          const chunkSubCommon = chunkSubCommons.get(chunk) as Set<string>

          chunkSubCommon.add(depName)
          chunkSubCommons.set(chunk, chunkSubCommon)
        } else {
          chunkSubCommons.set(chunk, new Set([depName]))
        }
      })
    })
    this.chunkSubCommons = chunkSubCommons
  }
  // ... 省略部分代码 ...
}

typescript复制代码export default class MiniSplitChunksPlugin extends SplitChunksPlugin {

  // ... 省略部分代码 ...


  apply (compiler: any) {

    // ... 省略部分代码 ...

    compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation: any) => {
      compilation.chunkTemplate.hooks.renderWithEntry.tap(PLUGIN_NAME, (modules, chunk) => {
        if (this.isSubChunk(chunk)) {
          const chunkName = chunk.name
          const chunkSubRoot = this.subRoots.find(subRoot => new RegExp(`^${subRoot}\\/`).test(chunkName)) as string
          const chunkAbsulutePath = path.resolve(this.distPath, chunkName)
          const source = new ConcatSource()
          const hasSubVendors = this.subPackagesVendors.has(chunkSubRoot)
          const subVendors = this.subPackagesVendors.get(chunkSubRoot) as webpack.compilation.Chunk
          const subCommon = [...(this.chunkSubCommons.get(chunkName) || [])]

          /**
           * require该分包下的sub-vendors
           */
          if (hasSubVendors) {
   // ... 此处省略文件路径生成逻辑 ...
            source.add(`require(${JSON.stringify(relativePath)});\n`)
          }

          // require sub-common下的模块
          if (subCommon.length > 0) {
            if (this.needAllInOne()) {
        // ... 此处省略文件路径生成逻辑 ...
              source.add(`require(${JSON.stringify(relativePath)});\n`)
            } else {
              subCommon.forEach(moduleName => {
     // ... 此处省略文件路径生成逻辑 ...

                source.add(`require(${JSON.stringify(relativePath)});\n`)
              })
            }
          }

          source.add(modules)
          source.add(';')
          return source
        }
      })
    }
                                   }

  // ... 省略部分代码 ...
}

typescript复制代码export default class MiniSplitChunksPlugin extends SplitChunksPlugin {

  // ... 省略部分代码 ...


  apply (compiler: any) {

    // ... 省略部分代码 ...

    compiler.hooks.emit.tapAsync(PLUGIN_NAME, this.tryAsync((compilation) => {
      const assets = compilation.assets
      const subChunks = compilation.entries.filter(entry => this.isSubChunk(entry))
      const needAllInOne = this.needAllInOne()

      subChunks.forEach(subChunk => {
        const subChunkName = subChunk.name
        const subRoot = this.subRoots.find(subRoot => new RegExp(`^${subRoot}\\/`).test(subChunkName)) as string
        const chunkWxssName = `${subChunkName}${FileExtsMap.STYLE}`
        const subCommon = [...(this.chunkSubCommons.get(subChunkName) || [])]
        const wxssAbsulutePath = path.resolve(this.distPath, chunkWxssName)
        const subVendorsWxssPath = path.join(subRoot, `${this.subVendorsName}${FileExtsMap.STYLE}`)
        const source = new ConcatSource()

        if (subCommon.length > 0) {
          let hasSubCssCommon = false
          subCommon.forEach(moduleName => {

            // ... 省略部分代码 ...

            // 复制sub-common下的资源到分包下
            for (const key in FileExtsMap) {
              const ext = FileExtsMap[key]
              const assetName = path.join(this.subCommonDir, `${moduleName}${ext}`)
              const subAssetName = path.join(subRoot, assetName)
              const assetSource = assets[normalizePath(assetName)]

              if (assetSource) {
                assets[normalizePath(subAssetName)] = {
                  size: () => assetSource.source().length,
                  source: () => assetSource.source()
                }
              }
            }
          })

          // ... 省略部分代码 ...
        }

        if (assets[normalizePath(subVendorsWxssPath)]) {
          const subVendorsAbsolutePath = path.resolve(this.distPath, subVendorsWxssPath)
          const relativePath = this.getRealRelativePath(wxssAbsulutePath, subVendorsAbsolutePath)
          source.add(`@import ${JSON.stringify(relativePath)};\n`)
        }

        if (assets[chunkWxssName]) {
          const originSource = assets[chunkWxssName].source()
          source.add(originSource)
        }

        assets[chunkWxssName] = {
          size: () => source.source().length,
          source: () => source.source()
        }
      })

      // 删除根目录下的sub-common资源文件
      for (const assetPath in assets) {
        if (new RegExp(`^${this.subCommonDir}\\/.*`).test(assetPath)) {
          delete assets[assetPath]
        }
      }

      // ... 省略部分代码 ...
    }))
  }
}

javascript复制代码module.exports = {
  plugins: [
    [
      'import',
      {
        libraryName: '@/components',
        libraryDirectory: '',
        transformToDefaultImport: false,
      },
    ],
  ],
};

javascript复制代码// component file -> @/components/component-a
export const ComponentA = ()=> <View/>

// business code 
import {ComponentA} from '@/components'

typescript复制代码import type {IPluginContext} from '@tarojs/service'
import {PromisePool} from '@supercharge/promise-pool'
import path from 'path';
import fs from 'fs';
import md5 from 'md5'

const cacheFileName = "imgCache.json"

/**
 * 递归查找文件
 */
const travelFiles = (dir: string): string[] => {
    const files = fs.readdirSync(dir);
    return files.reduce<string[]>((result, file) => {
        const filePath = path.join(dir, file);
        if (!fs.statSync(filePath).isDirectory()) return [...result, filePath];
        return [...result, ...travelFiles(filePath)];
    }, [])
}

/**
 * 文件路径格式化
 */
const filePathFormat = (ctx: IPluginContext, filePath: string) => {
    return filePath.replace(ctx.paths.sourcePath, "@").replace(/\\/g, "/");
}

/**
 * 生成文件 key
 */
const generateFileUniqueKey = (filePath: string) => {
    const {dir, base, ext} = path.parse(filePath);
    const buffer = fs.readFileSync(`${dir}${path.sep}${base}`);
    return md5(buffer)
}

const cacheFile = path.join(__dirname, cacheFileName);


interface PluginOpts {
    fileDir: string,
    upload: (filePath: string, fileKey: string) => Promise<string>

}

module.exports = (ctx: IPluginContext, pluginOpts: PluginOpts) => {
    ctx.onBuildStart(async () => {
        const {fileDir, upload} = pluginOpts
        const fileDirPath = `${ctx.paths.sourcePath}/${fileDir}`;
        const filePathList = travelFiles(fileDirPath);

        // 上传文件
        const {results: fileUrlList} = await PromisePool.withConcurrency(2)
            .for(filePathList)
            .process(async (filePath) => {
                const fileUrl = await upload(filePath, generateFileUniqueKey(filePath))
                return {filePath, fileUrl}
            })

        // 生成文件缓存数据
        const fileUrlMap = fileUrlList.reduce((result, item) => {
            const tempKey = filePathFormat(ctx, item.filePath)
            return {...result, [tempKey]: item.fileUrl}
        }, {})

        fs.writeFileSync(cacheFile, JSON.stringify(fileUrlMap));
    })
}

typescript复制代码import type {NodePath, PluginItem, PluginPass} from '@babel/core'
import type {ImportDeclaration, Statement} from "@babel/types";
import template from '@babel/template'
import path from "path";
import fs from "fs";

const cacheFileName = "imgCache.json"

const getCacheData = (filePath: string): Record<string, string> => {
    try {
        fs.accessSync(filePath);
        return JSON.parse(fs.readFileSync(filePath).toString());
    } catch (error) {
        return {}
    }

}


module.exports = (): PluginItem => {

    const cacheMap = getCacheData(path.join(__dirname, cacheFileName));

    return {
        visitor: {
            ImportDeclaration(importDeclarationAstPath: NodePath<ImportDeclaration>, state: PluginPass) {

                if (state.file.opts.filename?.includes("node_modules")) return;

                const {node} = importDeclarationAstPath;

                const {value} = node.source;

                const fileUrl = cacheMap[value]

                if (!fileUrl) return;

                const [specifier] = node.specifiers

                const assignExpression = template.ast(`const ${specifier.local.name} = '${fileUrl}';`);

                importDeclarationAstPath.replaceWith(assignExpression as Statement);
            }
        }
    }
}

typescript复制代码import {AcceptedPlugin} from "postcss";
import path from "path";
import fs from "fs";

const cacheFileName = "imgCache.json"

const getCacheData = (filePath: string): Record<string, string> => {
    try {
        fs.accessSync(filePath);
        return JSON.parse(fs.readFileSync(filePath).toString());
    } catch (error) {
        return {}
    }

}


const urlRegexp = /url\(['"]([^'"]*)['"]\)/


const filePathFormat = (filePath: string) => filePath.replace('~@', '@')


module.exports = (): AcceptedPlugin => {

    const cacheMap = getCacheData(path.join(__dirname, cacheFileName));

    return {
        postcssPlugin: 'auto-replace-assets-url',

        Declaration(decl) {

            if (!urlRegexp.test(decl.value)) return

            let [_, filePath] = decl.value.match(urlRegexp)!;

            filePath = filePathFormat(filePath)

            if (!cacheMap[filePath]) return;

            decl.value = `url(${cacheMap[filePath]})`

        }
    }
}

ini复制代码Column {    
    Button(onClick = {}) {        
        Text(text = "我是老A")    
    }
}

scss复制代码implementation("androidx.compose.ui:ui")
implementation("androidx.compose.ui:ui-graphics")
implementation("androidx.compose.ui:ui-tooling-preview")
debugImplementation("androidx.compose.ui:ui-tooling")
debugImplementation("androidx.compose.ui:ui-test-manifest")
androidTestImplementation("androidx.compose.ui:ui-test-junit4")

less复制代码@Preview
@Composable
fun preview() {    
    Column {        
        Button(onClick = {}) {            
            Text(text = "我是老A")        
        }        
        OutlinedButton(onClick = { /*TODO*/ }) {            
            Text(text = "我是老A")        
        }        
        TextButton(onClick = { /*TODO*/ }) {            
            Text(text = "我是老A")        
        }    
    }
}

scss复制代码implementation("androidx.compose.material3:material3-icon-extends")
implementation("androidx.compose.material3:material3-icon-core")

kotlin复制代码public fun ComponentActivity.setContent(    
    parent: CompositionContext? = null,    
    content: @Composable () -> Unit) {

}

kotlin复制代码@Composable
fun ui() {
    Column {
        Text("老A")
        Text("Mars")
    }
}

kotlin复制代码@Composable
fun ui1() {
    Text("老A")
    Text("Mars")
}

kotlin复制代码@Composable    
fun ui() {
    Column {            
        Text(text = "老A")            
        Text(text = "Mars")
    }
}

scss复制代码class CustomLinearLayout(context: Context?, attrs: AttributeSet?) : LinearLayout(context, attrs) {        
    val name: TextView by lazy { TextView(context) }        
    val alias: TextView by lazy { TextView(context) }        
    init {        
        orientation = VERTICAL        
        //
        name.text = "老A"
        alias.text = "Mars" 
        ...        
        // 省略部分代码              
        addView(name)        
        addView(alias)    
    }
}

ini复制代码<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    
    android:orientation="vertical"    
    android:layout_width="match_parent"    
    android:layout_height="match_parent">     
    <TextView         
        android:layout_width="wrap_content"         
        android:layout_height="wrap_content"/>        
    
    <TextView        
        android:layout_width="wrap_content"        
        android:layout_height="wrap_content"/>    
</LinearLayout>

kotlin复制代码@Composable
fun ui(name: String) {    
    Column {        
        Text(text = name)        
        Text(text = "Mars")
    }
}

kotlin复制代码@Composable
fun ui(name: String) {    
    Column {        
        val realName = remember {            
            if (name.length > 8) {                
                "我是laoA"            
            } else {                
                "我是马尔斯"            
            }        
        }        
        Text(text = realName)        
        Text(text = "Mars")
    }
}

java复制代码    /**
     * Accumulates the elements of this stream into a {@code List}. The elements in
     * the list will be in this stream's encounter order, if one exists. The returned List
     * is unmodifiable; calls to any mutator method will always cause
     * {@code UnsupportedOperationException} to be thrown. There are no
     * guarantees on the implementation type or serializability of the returned List.
     *
     * <p>The returned instance may be <a href="{@docRoot}/java.base/java/lang/doc-files/ValueBased.html">value-based</a>.
     * Callers should make no assumptions about the identity of the returned instances.
     * Identity-sensitive operations on these instances (reference equality ({@code ==}),
     * identity hash code, and synchronization) are unreliable and should be avoided.
     *
     * <p>This is a <a href="package-summary.html#StreamOps">terminal operation</a>.
     *
     * @apiNote If more control over the returned object is required, use
     * {@link Collectors#toCollection(Supplier)}.
     *
     * @implSpec The implementation in this interface returns a List produced as if by the following:
     * <pre>{@code
     * Collections.unmodifiableList(new ArrayList<>(Arrays.asList(this.toArray())))
     * }</pre>
     *
     * @implNote Most instances of Stream will override this method and provide an implementation
     * that is highly optimized compared to the implementation in this interface.
     *
     * @return a List containing the stream elements
     *
     * @since 16
     */
    @SuppressWarnings("unchecked")
    default List<T> toList() {
        return (List<T>) Collections.unmodifiableList(new ArrayList<>(Arrays.asList(this.toArray())));
    }

java复制代码 return (list instanceof RandomAccess ?
                new UnmodifiableRandomAccessList<>(list) :
                new UnmodifiableList<>(list));

java复制代码        List<String> stringList = List.of("1", "2", "3");
        List<String> largeNumberList = stringList.stream().filter(number -> Long.parseLong(number) > 1).toList();
        List<String> largeNumberList2 = stringList.stream().filter(number -> Long.parseLong(number) > 1).collect(Collectors.toList());
//        largeNumberList.add("4"); //  java.lang.UnsupportedOperationException
        largeNumberList2.add("4"); //success

        // modify custom object attribute
        User userZhang = new User("ZhangSan");
        User userLi = new User("LiSi");
        List<User> userList = List.of(userZhang, userLi);
        List<User> filterList = userList.stream().filter(user -> "LiSi".equals(user.name)).toList();

        User first = filterList.getFirst();//java 21
        first.name = "WangWu";
        filterList.forEach(u -> System.out.println(u.name));
        //List.of返回的也是不能修改的List
        userList.forEach(u -> System.out.print(u.name));

java复制代码    /**
     * Returns a {@code Collector} that accumulates the input elements into a
     * new {@code List}. There are no guarantees on the type, mutability,
     * serializability, or thread-safety of the {@code List} returned; if more
     * control over the returned {@code List} is required, use {@link #toCollection(Supplier)}.
     *
     * @param <T> the type of the input elements
     * @return a {@code Collector} which collects all the input elements into a
     * {@code List}, in encounter order
     */
    public static <T>
    Collector<T, ?, List<T>> toList() {
        return new CollectorImpl<>(ArrayList::new, List::add,
                                   (left, right) -> { left.addAll(right); return left; },
                                   CH_ID);
    }

kotlin复制代码2024-01-11T21:33:25.233+08:00 ERROR 13212 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception

org.springframework.data.redis.serializer.SerializationException: Could not write JSON: Java 8 date/time type `java.time.LocalDateTime` not supported by default: add Module "com.fasterxml.jackson.datatype:jackson-datatype-jsr310" to enable handling (through reference chain: java.util.ArrayList[0]->com.fast.alden.data.model.SysApiResource["createdTime"])
	at org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer.serialize(Jackson2JsonRedisSerializer.java:157) ~[spring-data-redis-3.2.0.jar:3.2.0]
	at org.springframework.data.redis.core.AbstractOperations.rawValue(AbstractOperations.java:128) ~[spring-data-redis-3.2.0.jar:3.2.0]
	at org.springframework.data.redis.core.DefaultValueOperations.set(DefaultValueOperations.java:236) ~[spring-data-redis-3.2.0.jar:3.2.0]

xml复制代码<dependency>
  <groupId>com.fasterxml.jackson.datatype</groupId>
  <artifactId>jackson-datatype-jsr310</artifactId>
  <version>2.13.0</version>
</dependency>

java复制代码@Configuration
public class RedisConfig {
    @Bean
    public RedisSerializer<Object> redisSerializer() {
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        // 必须设置，否则无法将JSON转化为对象，会转化成Map类型
        objectMapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.DefaultTyping.NON_FINAL);

        // 自定义ObjectMapper的时间处理模块
        JavaTimeModule javaTimeModule = new JavaTimeModule();

        javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
        javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));

        javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
        javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));

        javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern("HH:mm:ss")));
        javaTimeModule.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern("HH:mm:ss")));

        objectMapper.registerModule(javaTimeModule);
        
        // 禁用将日期序列化为时间戳的行为
        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        
        //创建JSON序列化器
        return new Jackson2JsonRedisSerializer<>(objectMapper, Object.class);
    }
}

yaml复制代码spring:
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8
    default-property-inclusion: always
  mvc:
    format:
      date-time: yyyy-MM-dd HH:mm:ss
      date: dd/MM/yyyy

java复制代码@Configuration
public class JacksonConfig {
    @Bean
    public Jackson2ObjectMapperBuilderCustomizer customizer() {
        return builder ->
                builder.simpleDateFormat("yyyy-MM-dd HH:mm:ss")
                        // long类型转string， 前端处理Long类型，数值过大会丢失精度
                        .serializerByType(Long.class, ToStringSerializer.instance)
                        .serializerByType(Long.TYPE, ToStringSerializer.instance)
                        .serializationInclusion(JsonInclude.Include.NON_NULL)
                        //指定反序列化类型，也可以使用@JsonFormat(pattern = "yyyy-MM-dd")替代。主要是mvc接收日期时使用
                        .deserializerByType(LocalTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("HH:mm:ss")))
                        .deserializerByType(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")))
                        .deserializerByType(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")))
                        // 日期序列化，主要返回数据时使用
                        .serializerByType(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern("HH:mm:ss")))
                        .serializerByType(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")))
                        .serializerByType(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
    }
}

java复制代码FixedSizeDrawable(State state, Drawable wrapped) {
  this.state = Preconditions.checkNotNull(state);
  this.wrapped = Preconditions.checkNotNull(wrapped);

  // We will do our own scaling.
  wrapped.setBounds(0, 0, wrapped.getIntrinsicWidth(), wrapped.getIntrinsicHeight());

  matrix = new Matrix();
  wrappedRect = new RectF(0, 0, wrapped.getIntrinsicWidth(), wrapped.getIntrinsicHeight());
  bounds = new RectF();
}

java复制代码matrix.setRectToRect(wrappedRect, drawableBounds, Matrix.ScaleToFit.CENTER);
canvas.concat(matrix);  //Canvas Matrix 转换

java复制代码public static class AnimationDrawableWrapper extends Drawable {

    private final Drawable animationDrawable; //动画drawable
    private final Matrix matrix = new Matrix();
    private final RectF wrappedRect;
    private final RectF drawableBounds;
    private final Matrix.ScaleToFit scaleToFit;
    private int alpha = 255;
    private ColorFilter colorFilter;

    public AnimationDrawableWrapper(Drawable drawable, Matrix.ScaleToFit scaleToFit) {
        this.animationDrawable = drawable;
        this.wrappedRect = new RectF(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
        this.drawableBounds = new RectF();
        this.scaleToFit = scaleToFit;
    }

    @Override
    public void draw(Canvas canvas) {
        Drawable current = animationDrawable.getCurrent();
        if (current == null) {
            return;
        }
        current.setAlpha(this.alpha);
        current.setColorFilter(this.colorFilter);
        Rect drawableRect = current.getBounds();
        wrappedRect.set(drawableRect);
        drawableBounds.set(getBounds());

        // 变化坐标
        matrix.setRectToRect(wrappedRect, drawableBounds, scaleToFit);

        int save = canvas.save();

        canvas.concat(matrix);
        current.draw(canvas);

        canvas.restoreToCount(save);

        current.setAlpha(255);//还原
        current.setColorFilter(null); //还原

    }

    @Override
    public void setAlpha(int alpha) {
        this.alpha = alpha;
    }

    @Override
    public void setColorFilter(ColorFilter colorFilter) {
        this.colorFilter = colorFilter;
    }

    @Override
    public int getOpacity() {
        return PixelFormat.TRANSLUCENT;
    }

}

java复制代码public void invalidateSelf() {
    final Callback callback = getCallback();
    if (callback != null) {
        callback.invalidateDrawable(this);
    }
}

java复制代码public interface Callback {

    void invalidateDrawable(@NonNull Drawable who);
  
    void scheduleDrawable(@NonNull Drawable who, @NonNull Runnable what, long when);

    void unscheduleDrawable(@NonNull Drawable who, @NonNull Runnable what);
}

java复制代码@Override
public void run() {
    nextFrame(false);
}

java复制代码this.choreographer = Choreographer.getInstance();

java复制代码this.drawable.setCallback(callback);

java复制代码@Override
public void invalidateDrawable(@NonNull Drawable who) {
//更新所有wrapper
    for (int i = 0; i < drawableList.size(); i++) {
        WeakReference<AnimationDrawableWrapper> reference = drawableList.get(i);
        AnimationDrawableWrapper wrapper = reference.get();
        if (wrapper == null) {
            return;
        }
        wrapper.invalidateSelf();
    }
}

@Override
public void scheduleDrawable(@NonNull Drawable who, @NonNull Runnable what, long when) {
    this.scheduleTask = what;
    this.choreographer.postFrameCallbackDelayed(this, when - SystemClock.uptimeMillis());
}

@Override
public void unscheduleDrawable(@NonNull Drawable who, @NonNull Runnable what) {
    this.scheduleTask = null;
    this.choreographer.removeFrameCallback(this);
}

java复制代码@Override
public void doFrame(long frameTimeNanos) {
    if(this.scheduleTask != null) {
        this.scheduleTask.run();
    }
}

java复制代码public class MirrorFrameAnimation implements Drawable.Callback, Choreographer.FrameCallback {
    private final Drawable drawable;
    private final int drawableWidth;
    private final int drawableHeight;
    private List<WeakReference<AnimationDrawableWrapper>> drawableList = new ArrayList<>();
    private Choreographer choreographer;
    private Runnable scheduleTask;

    public MirrorFrameAnimation(Resources resources, int resId, boolean isLazyDrawableAnimation, int drawableWidth, int drawableHeight) {

        //设置宽高，防止AnimationDrawable大小不稳定问题
        this.drawableWidth = drawableWidth;
        this.drawableHeight = drawableHeight;
        this.drawable = isLazyDrawableAnimation ? LazyAnimationDrawableInflater.getDrawable(resources, resId, null) : resources.getDrawable(resId);
        this.drawable.setBounds(0, 0, drawableHeight, drawableHeight);
        this.drawable.setCallback(this);
        this.choreographer = Choreographer.getInstance();
    }

    public MirrorFrameAnimation(LazyAnimationDrawable lazyAnimationDrawable, int drawableWidth, int drawableHeight) {

        //设置宽高，防止AnimationDrawable大小不稳定问题
        this.drawableWidth = drawableWidth;
        this.drawableHeight = drawableHeight;
        this.drawable = lazyAnimationDrawable;
        this.drawable.setBounds(0, 0, drawableHeight, drawableHeight);
        this.drawable.setCallback(this);
        this.choreographer = Choreographer.getInstance();
    }

    public MirrorFrameAnimation(AnimationDrawable animationDrawable, int drawableWidth, int drawableHeight) {

        //设置宽高，防止AnimationDrawable大小不稳定问题
        this.drawableWidth = drawableWidth;
        this.drawableHeight = drawableHeight;
        this.drawable = animationDrawable;
        this.drawable.setBounds(0, 0, drawableHeight, drawableHeight);
        this.drawable.setCallback(this);
        this.choreographer = Choreographer.getInstance();
    }

    public void start() {
        choreographer.removeFrameCallback(this);
        if (drawable instanceof AnimationDrawable) {
            ((AnimationDrawable) drawable).start();
        } else if (drawable instanceof LazyAnimationDrawable) {
            ((LazyAnimationDrawable) drawable).start();
        }
    }

    public void stop() {
        choreographer.removeFrameCallback(this);
        if (drawable instanceof AnimationDrawable) {
            ((AnimationDrawable) drawable).stop();
        } else if (drawable instanceof LazyAnimationDrawable) {
            ((LazyAnimationDrawable) drawable).stop();
        }
    }

    /**
     * @return The number of frames in the animation
     */
    public int getNumberOfFrames() {
        if (drawable instanceof AnimationDrawable) {
            return ((AnimationDrawable) drawable).getNumberOfFrames();
        } else if (drawable instanceof LazyAnimationDrawable) {
            return ((LazyAnimationDrawable) drawable).getNumberOfFrames();
        }
        return 0;
    }

    /**
     * @return The Drawable at the specified frame index
     */
    public Drawable getFrame(int index) {
        if (drawable instanceof AnimationDrawable) {
            return ((AnimationDrawable) drawable).getFrame(index);
        } else if (drawable instanceof LazyAnimationDrawable) {
            return ((LazyAnimationDrawable) drawable).getDrawableOfFrame(index);
        }
        return drawable;
    }

    /**
     * @return The duration in milliseconds of the frame at the
     * specified index
     */
    public int getDuration(int index) {
        if (drawable instanceof AnimationDrawable) {
            return ((AnimationDrawable) drawable).getDuration(index);
        } else if (drawable instanceof LazyAnimationDrawable) {
            return ((LazyAnimationDrawable) drawable).getDuration(index);
        }
        return 0;
    }

    /**
     * @return True of the animation will play once, false otherwise
     */
    public boolean isOneShot() {
        if (drawable instanceof AnimationDrawable) {
            return ((AnimationDrawable) drawable).isOneShot();
        } else if (drawable instanceof LazyAnimationDrawable) {
            return ((LazyAnimationDrawable) drawable).isOneShot();
        }
        return true;
    }

    public boolean isRunning() {
        if (drawable instanceof AnimationDrawable) {
            return ((AnimationDrawable) drawable).isRunning();
        } else if (drawable instanceof LazyAnimationDrawable) {
            return ((LazyAnimationDrawable) drawable).isRunning();
        }
        return false;
    }

    public long getDuration(){
        long duration = 0;
        if (drawable instanceof AnimationDrawable) {
            AnimationDrawable animationDrawable = (AnimationDrawable) drawable;
            int numberOfFrames = animationDrawable.getNumberOfFrames();
            for (int i = 0; i < numberOfFrames; i++) {
                duration += animationDrawable.getDuration(i);
            }
        } else if (drawable instanceof LazyAnimationDrawable) {
            LazyAnimationDrawable animationDrawable = (LazyAnimationDrawable) drawable;
            int numberOfFrames = animationDrawable.getNumberOfFrames();
            for (int i = 0; i < numberOfFrames; i++) {
                duration += animationDrawable.getDuration(i);
            }
        }
        return duration;
    }

    public boolean isEndFrame() {
        if (drawable instanceof AnimationDrawable) {
            AnimationDrawable animationDrawable = (AnimationDrawable) drawable;
            int frameIndex = animationDrawable.getNumberOfFrames() - 1;
            return animationDrawable.isOneShot() && animationDrawable.getFrame(frameIndex) == animationDrawable.getCurrent();
        }
        if (drawable instanceof LazyAnimationDrawable) {
            LazyAnimationDrawable animationDrawable = (LazyAnimationDrawable) drawable;
            int frameIndex = animationDrawable.getNumberOfFrames() - 1;
            if (animationDrawable.isOneShot() && animationDrawable.getFrame(frameIndex) == animationDrawable.getCurrentFrame()) {
                return true;
            }
        }
        return false;
    }

    public boolean isEndAnimation() {
        if (isEndFrame()) {
            return true;
        }
        if (drawable instanceof LazyAnimationDrawable) {
            LazyAnimationDrawable animationDrawable = (LazyAnimationDrawable) drawable;
            if (animationDrawable.isLoopFinish()) {
                return true;
            }
        }
        return false;
    }

    /**
     * Sets whether the animation should play once or repeat.
     *
     * @param oneShot Pass true if the animation should only play once
     */
    public void setOneShot(boolean oneShot) {
        if (drawable instanceof AnimationDrawable) {
            ((AnimationDrawable) drawable).setOneShot(oneShot);
        } else if (drawable instanceof LazyAnimationDrawable) {
            ((LazyAnimationDrawable) drawable).setOneShot(oneShot);
        }
    }

    public void syncDrawable(View view, Matrix.ScaleToFit scaleToFit) {
        if (!(drawable instanceof AnimationDrawable) && !(drawable instanceof LazyAnimationDrawable)) {
            if (view instanceof ImageView) {
                ((ImageView) view).setImageDrawable(drawable);
            } else {
                view.setBackground(drawable);
            }
            return;
        }

        AnimationDrawableWrapper wrapper = new AnimationDrawableWrapper(drawable,scaleToFit);
        drawableList.add(new WeakReference<>(wrapper));

        if (view instanceof ImageView) {
            ((ImageView) view).setImageDrawable(wrapper);
        } else {
            view.setBackground(wrapper);
        }
    }

    @Override
    public void invalidateDrawable(Drawable who) {
        for (int i = 0; i < drawableList.size(); i++) {
            WeakReference<AnimationDrawableWrapper> reference = drawableList.get(i);
            AnimationDrawableWrapper wrapper = reference.get();
            if (wrapper == null) {
                return;
            }
            wrapper.invalidateSelf();
        }
    }

    @Override
    public void scheduleDrawable(Drawable who, Runnable what, long when) {
        this.scheduleTask = what;
        this.choreographer.postFrameCallbackDelayed(this, when - SystemClock.uptimeMillis());
    }

    @Override
    public void unscheduleDrawable(Drawable who, Runnable what) {
        this.scheduleTask = null;
        this.choreographer.removeFrameCallback(this);
    }


    @Override
    public void doFrame(long frameTimeNanos) {
        if (this.scheduleTask != null) {
            this.scheduleTask.run();
        }
    }

    @Nullable
    public MirrorFrameAnimation cloneDrawable(int drawableWidth,int drawableHeight) {
        Drawable newDrawable = drawable.getConstantState().newDrawable();
        if(newDrawable instanceof LazyAnimationDrawable) {
            return new MirrorFrameAnimation((LazyAnimationDrawable) newDrawable, drawableWidth, drawableHeight);
        }else  if(newDrawable instanceof AnimationDrawable) {
            return new MirrorFrameAnimation((AnimationDrawable) newDrawable, drawableWidth, drawableHeight);
        }
        return null;
    }

    public static class AnimationDrawableWrapper extends Drawable {

        private final Drawable animationDrawable; //动画drawable
        private final Matrix matrix = new Matrix();
        private final RectF wrappedRect;
        private final RectF drawableBounds;
        private final Matrix.ScaleToFit scaleToFit;
        private int alpha = 255;
        private ColorFilter colorFilter;

        public AnimationDrawableWrapper(Drawable drawable, Matrix.ScaleToFit scaleToFit) {
            this.animationDrawable = drawable;
            this.wrappedRect = new RectF(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
            this.drawableBounds = new RectF();
            this.scaleToFit = scaleToFit;
        }

        @Override
        public void draw(Canvas canvas) {
            Drawable current = animationDrawable.getCurrent();
            if (current == null) {
                return;
            }
            current.setAlpha(this.alpha);
            current.setColorFilter(this.colorFilter);
            Rect drawableRect = current.getBounds();
            wrappedRect.set(drawableRect);
            drawableBounds.set(getBounds());

            // 变化坐标
            matrix.setRectToRect(wrappedRect, drawableBounds, scaleToFit);

            int save = canvas.save();

            canvas.concat(matrix);
            current.draw(canvas);

            canvas.restoreToCount(save);

            current.setAlpha(255);//还原
            current.setColorFilter(null); //还原

        }

        @Override
        public void setAlpha(int alpha) {
            this.alpha = alpha;
        }
        @Override
        public void setColorFilter(ColorFilter colorFilter) {
            this.colorFilter = colorFilter;
        }
        @Override
        public int getOpacity() {
            return PixelFormat.TRANSLUCENT;
        }

    }
}

java复制代码int dp2px = (int) dp2px(100);
MirrorFrameAnimation mirrorFrameAnimation = new MirrorFrameAnimation(getResources(),R.drawable.loading_animation,dp2px,dp2px);

mirrorFrameAnimation.syncDrawable(imageView1,Matrix.ScaleToFit.CENTER);
mirrorFrameAnimation.syncDrawable(imageView2,Matrix.ScaleToFit.CENTER);
mirrorFrameAnimation.syncDrawable(imageView3,Matrix.ScaleToFit.FILL);
mirrorFrameAnimation.syncDrawable(imageView4,Matrix.ScaleToFit.FILL);
mirrorFrameAnimation.syncDrawable(imageView5,Matrix.ScaleToFit.CENTER);
mirrorFrameAnimation.syncDrawable(imageView6,Matrix.ScaleToFit.CENTER);

mStart.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        mirrorFrameAnimation.start();
    }
});
mStop.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        mirrorFrameAnimation.stop();
    }
});

复制代码incr OFFICIAL_INDEX_VISIT_COUNT

复制代码incrby OFFICIAL_INDEX_VISIT_COUNT 5

kotlin复制代码try{
  String result = jedis.set(lockKey, requestId, "NX", "PX", expireTime);
  if ("OK".equals(result)) {
      return true;
  }
  return false;
} finally {
    unlock(lockKey);
}

arduino复制代码ZADD rank:score 100 "周星驰"
ZADD rank:score 90 "周杰伦"
ZADD rank:score 80 "周润发"
ZRANGE rank:score 0 -1 WITHSCORES

arduino复制代码1) "周星驰"
2) "100"
3) "周杰伦"
4) "90"
5) "周润发"
6) "80"

c复制代码jedis.set(userId, userInfo, 1800);

sql复制代码setbit key offset value

sql复制代码setbit user:view:2024-01-17 123456 1

sql复制代码getbit key offset

sql复制代码getbit user:view:2024-01-17 123456

typescript复制代码@Slf4j
@Component
public class RedisMessageListenerListener implements MessageListener {
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    @Override
    public void onMessage(Message message, byte[] pattern) {
        String channel = new String(pattern);
        RedisSerializer<?> valueSerializer = redisTemplate.getValueSerializer();
        Object deserialize = valueSerializer.deserialize(message.getBody());
        if (deserialize == null) return;
        String md5DigestAsHex = DigestUtils.md5DigestAsHex(deserialize.toString().getBytes(StandardCharsets.UTF_8));
        Boolean result = redisTemplate.opsForValue().setIfAbsent(md5DigestAsHex, "1", 20, TimeUnit.SECONDS);
        if (Boolean.TRUE.equals(result)) {
            log.info("接收的结果：{}", deserialize.toString());
        } else {
            log.info("其他服务处理中");
        }
    }
}

复制代码incrby userid 10000

xml复制代码<dependency>
    <groupId>org.mapstruct</groupId>
    <artifactId>mapstruct</artifactId>
    <version>1.5.5.Final</version>
</dependency>

xml复制代码<build>  
    <plugins>        
        <plugin>            
            <groupId>org.apache.maven.plugins</groupId>  
            <artifactId>maven-compiler-plugin</artifactId>  
            <configuration>                 
                <annotationProcessorPaths>                   
                    <path>                        
                        <groupId>org.mapstruct</groupId>  
                        <artifactId>mapstruct-processor</artifactId>  
                        <version>1.5.5.Final</version>  
                    </path>                    
                    <path>                        
                        <groupId>org.projectlombok</groupId>  
                        <artifactId>lombok</artifactId>  
                        <version>1.18.22</version>  
                    </path>                    
                    <path>                        
                        <groupId>org.projectlombok</groupId>  
                        <artifactId>lombok-mapstruct-binding</artifactId>  
                        <version>0.2.0</version>  
                    </path>                
                </annotationProcessorPaths>            
            </configuration>        
        </plugin>    
    </plugins>
</build>

java复制代码@Mapper
public interface MyMapper {
    MyMapper INSTANCE = Mappers.getMapper(MyMapper.class);

    TargetObject sourceToTarget(SourceObject source);
    // 定义其他映射方法
}

ini复制代码@Override  
public TargetObject sourceToTarget(SourceObject source) {  
    if ( source == null ) {  
        return null;  
    }  

    TargetObject targetObject = new TargetObject();  

    targetObject.setUserName( source.getUserName() );  
    targetObject.setUserId( source.getUserId() );  
    targetObject.setSex( source.getSex() );  

    return targetObject;  
}

bash复制代码TargetObject handleObject(SourceObject source){  
    return MyConverter.INSTANCE.sourceToTarget(source);  
}

java复制代码@Component  
public class MySpringMapperImpl implements MySpringMapper {  

    @Override  
    public TargetObject sourceToTarget(SourceObject source) {  
        if ( source == null ) {  
            return null;  
        }  

        TargetObject targetObject = new TargetObject();  

        targetObject.setUserName( source.getUserName() );  
        targetObject.setUserId( source.getUserId() );  
        targetObject.setSex( source.getSex() );  

        return targetObject;  
    }  
}

kotlin复制代码public class MyConverter {  

    @Named("convertSexDesc")  
    public String convertSexDesc(Integer sex){  
        return SexEnum.descOfCode(sex);  
    }  
}

ini复制代码@Mapper(uses = {MyConverter.class})  
public interface MyMapper {  

    MyMapper INSTANCE = Mappers.getMapper(MyMapper.class);  

    @Mapping(target = "sex", source = "sex", qualifiedByName = "convertSexDesc")  
    TargetObject sourceToTarget(SourceObject source);  
}

java复制代码public class MyMapperImpl implements MyMapper {  

    private final MyConverter myConverter = new MyConverter();  

    @Override  
    public TargetObject sourceToTarget(SourceObject source) {  
        if ( source == null ) {  
            return null;  
        }  

        TargetObject targetObject = new TargetObject();  

        targetObject.setSex( myConverter.convertSexDesc( source.getSex() ) );  
        targetObject.setUserName( source.getUserName() );  
        targetObject.setUserId( source.getUserId() );  

        return targetObject;  
    }  
}

kotlin复制代码@Mapper  
public interface MyMapper {  

    MyMapper INSTANCE = Mappers.getMapper(MyMapper.class);  

    @Mapping(target = "sex", source = "sex", qualifiedByName = "convertSexDesc")  
    TargetObject sourceToTarget(SourceObject source);  


    @Named("convertSexDesc")  
    default String convertSexDesc(Integer sex){  
        return SexEnum.descOfCode(sex);  
    }  
}

java复制代码public class MyMapperImpl implements MyMapper {  

    @Override  
    public TargetObject sourceToTarget(SourceObject source) {  
        if ( source == null ) {  
            return null;  
        }  

        TargetObject targetObject = new TargetObject();  

        targetObject.setSex( convertSexDesc( source.getSex() ) );  
        targetObject.setUserName( source.getUserName() );  
        targetObject.setUserId( source.getUserId() );  

        return targetObject;  
    }  
}

java复制代码@Mapper(imports = {StringUtils.class, SexEnum.class})  
public interface MyMapper {  

    MyMapper INSTANCE = Mappers.getMapper(MyMapper.class);  

    @Mapping(target = "sex",  expression = "java(SexEnum.descOfCode(source.getSex()))")  
    TargetObject sourceToTarget(SourceObject source);
}

java复制代码import com.springboot.code.mapstruct.SexEnum;
import org.springframework.util.StringUtils;

public class MyMapperImpl implements MyMapper {  

    @Override  
    public TargetObject sourceToTarget(SourceObject source) {  
        if ( source == null ) {  
            return null;  
        }  

        TargetObject targetObject = new TargetObject();  

        targetObject.setUserName( source.getUserName() );  
        targetObject.setUserId( source.getUserId() );  

        targetObject.setSex( SexEnum.descOfCode(source.getSex()) );  

        return targetObject;  
    }  
}

java复制代码@Mapper  
public interface MyMapper {  

    MyMapper INSTANCE = Mappers.getMapper(MyMapper.class);  

    @Mapping(target = "sex",  expression = "java(com.springboot.code.mapstruct.SexEnum.descOfCode(source.getSex()))")  
    TargetObject sourceToTarget(SourceObject source);
}

java复制代码public class MyMapperImpl implements MyMapper {  

    @Override  
    public TargetObject sourceToTarget(SourceObject source) {  
        if ( source == null ) {  
            return null;  
        }  

        TargetObject targetObject = new TargetObject();  

        targetObject.setUserName( source.getUserName() );  
        targetObject.setUserId( source.getUserId() );  

        targetObject.setSex( com.springboot.code.mapstruct.SexEnum.descOfCode(source.getSex()) );  

        return targetObject;  
    }  
}

ini复制代码@MapperConfig(  
        nullValueCheckStrategy = NullValueCheckStrategy.ALWAYS,  
        componentModel = "default",  
        uses = MyConverter.class,  
        unmappedTargetPolicy = org.mapstruct.ReportingPolicy.WARN  
)  
public interface MyMapperConfig {  
}

ini复制代码@Mapper(config = MyMapperConfig.class)  
public interface MyMapper {  

    MyMapper INSTANCE = Mappers.getMapper(MyMapper.class);  

    @Mapping(target = "sex", source = "sex", qualifiedByName = "convertSexDesc")  
    TargetObject sourceToTarget(SourceObject source);
 }