xml复制代码<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.4.3</version>
</dependency>

java复制代码String param = "10";
int paramInt = Convert.toInt(param);
int paramIntDefault = Convert.toInt(param, 0);

java复制代码String dateStr = "2020年09月29日";
Date date = Convert.toDate(dateStr);

java复制代码String unicodeStr = "沉默王二";
String unicode = Convert.strToUnicode(unicodeStr);

java复制代码Date date = DateUtil.date();

csharp复制代码System.out.println(date);// 2020-09-29 04:28:02

java复制代码String dateStr = "2020-09-29";
Date date = DateUtil.parse(dateStr);

java复制代码String dateStr1 = "2020-09-29 22:33:23";
Date date1 = DateUtil.parse(dateStr1);

String dateStr2 = "2020-10-01 23:34:27";
Date date2 = DateUtil.parse(dateStr2);

long betweenDay = DateUtil.between(date1, date2, DateUnit.MS);

// 输出：2天1小时1分4秒
String formatBetween = DateUtil.formatBetween(betweenDay, BetweenFormater.Level.SECOND);

java复制代码// 射手座
String zodiac = DateUtil.getZodiac(Month.DECEMBER.getValue(), 10);
// 蛇
String chineseZodiac = DateUtil.getChineseZodiac(1989);

java复制代码BufferedInputStream in = FileUtil.getInputStream("hutool/origin.txt");
BufferedOutputStream out = FileUtil.getOutputStream("hutool/to.txt");
long copySize = IoUtil.copy(in, out, IoUtil.DEFAULT_BUFFER_SIZE);

java复制代码FileUtil.getInputStream("origin.txt")

java复制代码FileUtil.getInputStream("hutool/origin.txt")

java复制代码String template = "{}，一枚沉默但有趣的程序员，喜欢他的文章的话，请微信搜索{}";
String str = StrUtil.format(template, "沉默王二", "沉默王二");
// 沉默王二，一枚沉默但有趣的程序员，喜欢他的文章的话，请微信搜索沉默王二

java复制代码package com.itwanger.hutool.reflect;

import cn.hutool.core.util.ReflectUtil;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class ReflectDemo {
    private int id;

    public ReflectDemo() {
        System.out.println("构造方法");
    }

    public void print() {
        System.out.println("我是沉默王二");
    }

    public static void main(String[] args) throws IllegalAccessException {
        // 构建对象
        ReflectDemo reflectDemo = ReflectUtil.newInstance(ReflectDemo.class);

        // 获取构造方法
        Constructor[] constructors = ReflectUtil.getConstructors(ReflectDemo.class);
        for (Constructor constructor : constructors) {
            System.out.println(constructor.getName());
        }

        // 获取字段
        Field field = ReflectUtil.getField(ReflectDemo.class, "id");
        field.setInt(reflectDemo, 10);
        // 获取字段值
        System.out.println(ReflectUtil.getFieldValue(reflectDemo, field));

        // 获取所有方法
        Method[] methods = ReflectUtil.getMethods(ReflectDemo.class);
        for (Method m : methods) {
            System.out.println(m.getName());
        }

        // 获取指定方法
        Method method = ReflectUtil.getMethod(ReflectDemo.class, "print");
        System.out.println(method.getName());


        // 执行方法
        ReflectUtil.invoke(reflectDemo, "print");
    }
}

java复制代码ZipUtil.zip("hutool", "hutool.zip");
File unzip = ZipUtil.unzip("hutool.zip", "hutoolzip");

java复制代码String ID_18 = "321083197812162119";
String ID_15 = "150102880730303";

boolean valid = IdcardUtil.isValidCard(ID_18);
boolean valid15 = IdcardUtil.isValidCard(ID_15);

java复制代码Dict dict = Dict.create()
        .set("age", 18)
        .set("name", "沉默王二")
        .set("birthday", DateTime.now());

int age = dict.getInt("age");
String name = dict.getStr("name");

java复制代码public class ConsoleDemo {
    public static void main(String[] args) {
        // 打印字符串
        Console.log("沉默王二，一枚有趣的程序员");

        // 打印字符串模板
        Console.log("洛阳是{}朝古都",13);

        int [] ints = {1,2,3,4};
        // 打印数组
        Console.log(ints);
    }
}

java复制代码Validator.isEmail("沉默王二");
Validator.isMobile("itwanger.com");

java复制代码BiMap<String, String> biMap = new BiMap<>(new HashMap<>());
biMap.put("wanger", "沉默王二");
biMap.put("wangsan", "沉默王三");

// get value by key
biMap.get("wanger");
biMap.get("wangsan");

// get key by value
biMap.getKey("沉默王二");
biMap.getKey("沉默王三");

java复制代码ImgUtil.scale(
        FileUtil.file("hutool/wangsan.jpg"),
        FileUtil.file("hutool/wangsan_small.jpg"),
        0.5f
);

java复制代码ImgUtil.cut(
        FileUtil.file("hutool/wangsan.jpg"),
        FileUtil.file("hutool/wangsan_cut.jpg"),
        new Rectangle(200, 200, 100, 100)
);

java复制代码ImgUtil.pressText(//
        FileUtil.file("hutool/wangsan.jpg"),
        FileUtil.file("hutool/wangsan_logo.jpg"),
        "沉默王二", Color.WHITE,
        new Font("黑体", Font.BOLD, 100),
        0,
        0,
        0.8f
);

ini复制代码name=沉默王二
age=18

java复制代码public class SettingDemo {
    private final static String SETTING = "hutool/example.setting";
    public static void main(String[] args) {
        // 初始化 Setting
        Setting setting = new Setting(SETTING);

        // 读取
        setting.getStr("name", "沉默王二");

        // 在配置文件变更时自动加载
        setting.autoLoad(true);

        // 通过代码方式增加键值对
        setting.set("birthday", "2020年09月29日");
        setting.store(SETTING);
    }
}

java复制代码public class LogDemo {
    private static final Log log = LogFactory.get();

    public static void main(String[] args) {
        log.debug("难得糊涂");
    }
}

java复制代码StaticLog.info("爽啊 {}.", "沉默王二的文章");

java复制代码Cache<String, String> fifoCache = CacheUtil.newFIFOCache(3);
fifoCache.put("key1", "沉默王一");
fifoCache.put("key2", "沉默王二");
fifoCache.put("key3", "沉默王三");
fifoCache.put("key4", "沉默王四");

// 大小为 3，所以 key3 放入后 key1 被清除
String value1 = fifoCache.get("key1");

java复制代码Cache<String, String> lfuCache = CacheUtil.newLFUCache(3);

lfuCache.put("key1", "沉默王一");
// 使用次数+1
lfuCache.get("key1");
lfuCache.put("key2", "沉默王二");
lfuCache.put("key3", "沉默王三");
lfuCache.put("key4", "沉默王四");

// 由于缓存容量只有 3，当加入第 4 个元素的时候，最少使用的将被移除（2,3被移除）
String value2 = lfuCache.get("key2");
String value3 = lfuCache.get("key3");

java复制代码Cache<String, String> lruCache = CacheUtil.newLRUCache(3);

lruCache.put("key1", "沉默王一");
lruCache.put("key2", "沉默王二");
lruCache.put("key3", "沉默王三");
// 使用时间近了
lruCache.get("key1");
lruCache.put("key4", "沉默王四");

// 由于缓存容量只有 3，当加入第 4 个元素的时候，最久使用的将被移除（2）
String value2 = lruCache.get("key2");
System.out.println(value2);

java复制代码public class SecureUtilDemo {
    static AES aes = SecureUtil.aes();
    public static void main(String[] args) {
        String encry = aes.encryptHex("沉默王二");
        System.out.println(encry);
        String oo = aes.decryptStr(encry);
        System.out.println(oo);
    }
}

properties复制代码spring.rabbitmq.host=localhost
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.rabbitmq.port=5672

java复制代码@Configuration
public class HelloWorldConfig {

    public static final String HELLO_WORLD_QUEUE_NAME = "hello_world_queue";

    @Bean
    Queue queue1() {
        return new Queue(HELLO_WORLD_QUEUE_NAME);
    }
}

java复制代码@Component
public class HelloWorldConsumer {
    @RabbitListener(queues = HelloWorldConfig.HELLO_WORLD_QUEUE_NAME)
    public void receive(String msg) {
        System.out.println("msg = " + msg);
    }
}

java复制代码@SpringBootTest
class RabbitmqdemoApplicationTests {

    @Autowired
    RabbitTemplate rabbitTemplate;


    @Test
    void contextLoads() {
        rabbitTemplate.convertAndSend(HelloWorldConfig.HELLO_WORLD_QUEUE_NAME, "hello");
    }

}

java复制代码@Component
public class HelloWorldConsumer {
    @RabbitListener(queues = HelloWorldConfig.HELLO_WORLD_QUEUE_NAME)
    public void receive(String msg) {
        System.out.println("receive = " + msg);
    }
    @RabbitListener(queues = HelloWorldConfig.HELLO_WORLD_QUEUE_NAME,concurrency = "10")
    public void receive2(String msg) {
        System.out.println("receive2 = " + msg+"------->"+Thread.currentThread().getName());
    }
}

java复制代码@SpringBootTest
class RabbitmqdemoApplicationTests {

    @Autowired
    RabbitTemplate rabbitTemplate;


    @Test
    void contextLoads() {
        for (int i = 0; i < 10; i++) {
            rabbitTemplate.convertAndSend(HelloWorldConfig.HELLO_WORLD_QUEUE_NAME, "hello");
        }
    }

}

properties复制代码spring.rabbitmq.listener.simple.acknowledge-mode=manual

java复制代码@Component
public class HelloWorldConsumer {
    @RabbitListener(queues = HelloWorldConfig.HELLO_WORLD_QUEUE_NAME)
    public void receive(Message message,Channel channel) throws IOException {
        System.out.println("receive="+message.getPayload());
        channel.basicAck(((Long) message.getHeaders().get(AmqpHeaders.DELIVERY_TAG)),true);
    }

    @RabbitListener(queues = HelloWorldConfig.HELLO_WORLD_QUEUE_NAME, concurrency = "10")
    public void receive2(Message message, Channel channel) throws IOException {
        System.out.println("receive2 = " + message.getPayload() + "------->" + Thread.currentThread().getName());
        channel.basicReject(((Long) message.getHeaders().get(AmqpHeaders.DELIVERY_TAG)), true);
    }
}

java复制代码@Configuration
public class RabbitDirectConfig {
    public final static String DIRECTNAME = "javaboy-direct";
    @Bean
    Queue queue() {
        return new Queue("hello-queue");
    }
    @Bean
DirectExchange directExchange() {
        return new DirectExchange(DIRECTNAME, true, false);
    }
    @Bean
    Binding binding() {
        return BindingBuilder.bind(queue())
                .to(directExchange()).with("direct");
    }
}

java复制代码@Component
public class DirectReceiver {
    @RabbitListener(queues = "hello-queue")
    public void handler1(String msg) {
        System.out.println("DirectReceiver:" + msg);
    }
}

java复制代码@RunWith(SpringRunner.class)
@SpringBootTest
public class RabbitmqApplicationTests {
    @Autowired
    RabbitTemplate rabbitTemplate;
    @Test
    public void directTest() {
        rabbitTemplate.convertAndSend("hello-queue", "hello direct!");
    }
}

java复制代码@Configuration
public class RabbitFanoutConfig {
    public final static String FANOUTNAME = "sang-fanout";
    @Bean
    FanoutExchange fanoutExchange() {
        return new FanoutExchange(FANOUTNAME, true, false);
    }
    @Bean
    Queue queueOne() {
        return new Queue("queue-one");
    }
    @Bean
    Queue queueTwo() {
        return new Queue("queue-two");
    }
    @Bean
    Binding bindingOne() {
        return BindingBuilder.bind(queueOne()).to(fanoutExchange());
    }
    @Bean
    Binding bindingTwo() {
        return BindingBuilder.bind(queueTwo()).to(fanoutExchange());
    }
}

java复制代码@Component
public class FanoutReceiver {
    @RabbitListener(queues = "queue-one")
    public void handler1(String message) {
        System.out.println("FanoutReceiver:handler1:" + message);
    }
    @RabbitListener(queues = "queue-two")
    public void handler2(String message) {
        System.out.println("FanoutReceiver:handler2:" + message);
    }
}

java复制代码@RunWith(SpringRunner.class)
@SpringBootTest
public class RabbitmqApplicationTests {
    @Autowired
    RabbitTemplate rabbitTemplate;
    @Test
    public void fanoutTest() {
        rabbitTemplate
        .convertAndSend(RabbitFanoutConfig.FANOUTNAME, 
                null, "hello fanout!");
    }
}

java复制代码@Configuration
public class RabbitTopicConfig {
    public final static String TOPICNAME = "sang-topic";
    @Bean
    TopicExchange topicExchange() {
        return new TopicExchange(TOPICNAME, true, false);
    }
    @Bean
    Queue xiaomi() {
        return new Queue("xiaomi");
    }
    @Bean
    Queue huawei() {
        return new Queue("huawei");
    }
    @Bean
    Queue phone() {
        return new Queue("phone");
    }
    @Bean
    Binding xiaomiBinding() {
        return BindingBuilder.bind(xiaomi()).to(topicExchange())
                .with("xiaomi.#");
    }
    @Bean
    Binding huaweiBinding() {
        return BindingBuilder.bind(huawei()).to(topicExchange())
                .with("huawei.#");
    }
    @Bean
    Binding phoneBinding() {
        return BindingBuilder.bind(phone()).to(topicExchange())
                .with("#.phone.#");
    }
}

java复制代码@Component
public class TopicReceiver {
    @RabbitListener(queues = "phone")
    public void handler1(String message) {
        System.out.println("PhoneReceiver:" + message);
    }
    @RabbitListener(queues = "xiaomi")
    public void handler2(String message) {
        System.out.println("XiaoMiReceiver:"+message);
    }
    @RabbitListener(queues = "huawei")
    public void handler3(String message) {
        System.out.println("HuaWeiReceiver:"+message);
    }
}

java复制代码@RunWith(SpringRunner.class)
@SpringBootTest
public class RabbitmqApplicationTests {
    @Autowired
    RabbitTemplate rabbitTemplate;
    @Test
    public void topicTest() {
        rabbitTemplate.convertAndSend(RabbitTopicConfig.TOPICNAME,
"xiaomi.news","小米新闻..");
        rabbitTemplate.convertAndSend(RabbitTopicConfig.TOPICNAME,
"huawei.news","华为新闻..");
        rabbitTemplate.convertAndSend(RabbitTopicConfig.TOPICNAME,
"xiaomi.phone","小米手机..");
        rabbitTemplate.convertAndSend(RabbitTopicConfig.TOPICNAME,
"huawei.phone","华为手机..");
        rabbitTemplate.convertAndSend(RabbitTopicConfig.TOPICNAME,
"phone.news","手机新闻..");
    }
}

java复制代码@Configuration
public class RabbitHeaderConfig {
    public final static String HEADERNAME = "javaboy-header";
    @Bean
    HeadersExchange headersExchange() {
        return new HeadersExchange(HEADERNAME, true, false);
    }
    @Bean
    Queue queueName() {
        return new Queue("name-queue");
    }
    @Bean
    Queue queueAge() {
        return new Queue("age-queue");
    }
    @Bean
    Binding bindingName() {
        Map<String, Object> map = new HashMap<>();
        map.put("name", "sang");
        return BindingBuilder.bind(queueName())
                .to(headersExchange()).whereAny(map).match();
    }
    @Bean
    Binding bindingAge() {
        return BindingBuilder.bind(queueAge())
                .to(headersExchange()).where("age").exists();
    }
}

java复制代码@Component
public class HeaderReceiver {
    @RabbitListener(queues = "name-queue")
    public void handler1(byte[] msg) {
        System.out.println("HeaderReceiver:name:"
                + new String(msg, 0, msg.length));
    }
    @RabbitListener(queues = "age-queue")
    public void handler2(byte[] msg) {
        System.out.println("HeaderReceiver:age:"
                + new String(msg, 0, msg.length));
    }
}

java复制代码@RunWith(SpringRunner.class)
@SpringBootTest
public class RabbitmqApplicationTests {
    @Autowired
    RabbitTemplate rabbitTemplate;
    @Test
    public void headerTest() {
        Message nameMsg = MessageBuilder
                .withBody("hello header! name-queue".getBytes())
                .setHeader("name", "sang").build();
        Message ageMsg = MessageBuilder
                .withBody("hello header! age-queue".getBytes())
                .setHeader("age", "99").build();
        rabbitTemplate.send(RabbitHeaderConfig.HEADERNAME, null, ageMsg);
        rabbitTemplate.send(RabbitHeaderConfig.HEADERNAME, null, nameMsg);
    }
}

xml复制代码  <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid-spring-boot-starter</artifactId>
        <version>1.1.22</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>

yml复制代码spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    druid:
      name: 数据源名称
      driver-class-name: com.mysql.jdbc.Driver
      username: root
      password: 123456
      url: jdbc:mysql://127.0.0.1:3306/springboot?characterEncoding=utf8&useSSL=false
      # 连接池的配置信息
      # 初始化大小，最小，最大
      initial-size: 5
      min-idle: 5
      maxActive: 20
      # 配置获取连接等待超时的时间
      maxWait: 60000
      # 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
      timeBetweenEvictionRunsMillis: 60000
      # 配置一个连接在池中最小生存的时间，单位是毫秒
      minEvictableIdleTimeMillis: 300000
      validationQuery: SELECT 1
      testWhileIdle: true
      testOnBorrow: false
      testOnReturn: false
      # 打开PSCache，并且指定每个连接上PSCache的大小
      poolPreparedStatements: true
      maxPoolPreparedStatementPerConnectionSize: 20
      # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
      filters: stat,wall,slf4j,config
      # 通过connectProperties属性来打开mergeSql功能；慢SQL记录
      connectionProperties: druid.stat.mergeSql\=true;druid.stat.slowSqlMillis\=5000
      web-stat-filter:
        enabled: true
        url-pattern: "/"
        exclusions: "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*"
      stat-view-servlet:
        enabled: true
        url-pattern: "/druid/*"
        login-username: admin  # 登录账号   不设置就不需要登录就可以访问druid可视化界面
        login-password: 123456 # 登录密码
        reset-enable: false
        allow: ""  # 白名单 表示所有
        deny: 192.168.1.12 # 黑名单

java复制代码@Configuration
@EnableTransactionManagement
public class TransactionConfiguration {

    /**
     * 配置全局事务的切点为service层的所有方法  AOP切面表达式 可参考（https://blog.csdn.net/ycf921244819/article/details/106599489）
     * TODO 设置service层所在位置
     */
    private static final String AOP_POINTCUT_EXPRESSION = "execution (* cn.hjljy.fastboot..*.service..*.*(..))";

    /**
     * 注入事务管理器
     */
    @Autowired
    private TransactionManager transactionManager;


    /**
     * 配置事务拦截器
     */
    @Bean
    public TransactionInterceptor txAdvice() {

        RuleBasedTransactionAttribute txAttrRequired = new RuleBasedTransactionAttribute();
        txAttrRequired.setName("REQUIRED事务");
        //设置事务传播机制，默认是PROPAGATION_REQUIRED：如果当前存在事务，则加入该事务；如果当前没有事务，则创建一个新的事务
        txAttrRequired.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
        //设置异常回滚为Exception  默认是RuntimeException
        List<RollbackRuleAttribute> rollbackRuleAttributes = new ArrayList<>();
        rollbackRuleAttributes.add(new RollbackRuleAttribute(Exception.class));
        txAttrRequired.setRollbackRules(rollbackRuleAttributes);

        RuleBasedTransactionAttribute txAttrRequiredReadOnly = new RuleBasedTransactionAttribute();
        txAttrRequiredReadOnly.setName("SUPPORTS事务");
        //设置事务传播机制，PROPAGATION_SUPPORTS：如果当前存在事务，则加入该事务；如果当前没有事务，则以非事务的方式继续运行
        txAttrRequiredReadOnly.setPropagationBehavior(TransactionDefinition.PROPAGATION_SUPPORTS);
        //设置异常回滚为Exception  默认是RuntimeException
        txAttrRequiredReadOnly.setRollbackRules(rollbackRuleAttributes);
        txAttrRequiredReadOnly.setReadOnly(true);

        /*事务管理规则，声明具备事务管理的方法名*/
        NameMatchTransactionAttributeSource source = new NameMatchTransactionAttributeSource();
        //方法名规则限制，必须以下列开头才会加入事务管理当中
        source.addTransactionalMethod("add*", txAttrRequired);
        source.addTransactionalMethod("save*", txAttrRequired);
        source.addTransactionalMethod("create*", txAttrRequired);
        source.addTransactionalMethod("insert*", txAttrRequired);
        source.addTransactionalMethod("submit*", txAttrRequired);
        source.addTransactionalMethod("del*", txAttrRequired);
        source.addTransactionalMethod("remove*", txAttrRequired);
        source.addTransactionalMethod("update*", txAttrRequired);
        source.addTransactionalMethod("exec*", txAttrRequired);
        source.addTransactionalMethod("set*", txAttrRequired);

        //对于查询方法，根据实际情况添加事务管理 可能存在查询多个数据时，已查询出来的数据刚好被改变的情况
        source.addTransactionalMethod("get*", txAttrRequiredReadOnly);
        source.addTransactionalMethod("select*", txAttrRequiredReadOnly);
        source.addTransactionalMethod("query*", txAttrRequiredReadOnly);
        source.addTransactionalMethod("find*", txAttrRequiredReadOnly);
        source.addTransactionalMethod("list*", txAttrRequiredReadOnly);
        source.addTransactionalMethod("count*", txAttrRequiredReadOnly);
        source.addTransactionalMethod("is*", txAttrRequiredReadOnly);
        return new TransactionInterceptor(transactionManager, source);
    }
    
    /**
     *  设置切面
     */
    @Bean
    public Advisor txAdviceAdvisor() {
        AspectJExpressionPointcut pointcut = new AspectJExpressionPointcut();
        pointcut.setExpression(AOP_POINTCUT_EXPRESSION);
        return new DefaultPointcutAdvisor(pointcut, txAdvice());
    }
}

xml复制代码    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
        <version>3.3.2</version>
    </dependency>

yml复制代码mybatis-plus:
  mapper-locations: classpath:mapper/*.xml  #xml所在位置  不设置默认是在mapper类同级
  configuration:
    mapUnderscoreToCamelCase: true  # 开启驼峰匹配  默认为true
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl  # 打印sql语句和入参数据
  global-config:
    db-config:
      logic-delete-value: 1 #逻辑删除  配合@TableLogic注解
      logic-not-delete-value: 0 #逻辑不删除
      update-strategy: not_null # 更新时字段如果为null，就不进行更新该字段。
      insert-strategy: not_null # 插入时如果字段为null,就不插入数据，建议数据库表字段设置默认值

java复制代码@Configuration
@MapperScan("cn.hjljy.fastboot.mapper")
public class MybatisPlusConfiguration {
    /**
     * mybatis-plus分页插件
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        PaginationInterceptor page = new PaginationInterceptor();
        //设置分页数据库类型
        page.setDbType(DbType.MYSQL);
        page.setDialect(new MySqlDialect());
        //优化count sql
        page.setCountSqlParser(new JsqlParserCountOptimize(true));
        //设置每页最大值
        page.setLimit(999L);
        return page;
    }
}

java复制代码package $!{cfg.dtoPackage};

#foreach($pkg in ${table.importPackages})
import ${pkg};
#end
#if(${swagger2})
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
#end
#if(${entityLombokModel})
import lombok.Data;
import lombok.EqualsAndHashCode;
#if(${chainModel})
import lombok.experimental.Accessors;
#end
#end

/**
 * <p>
 * $!{table.comment}
 * </p>
 *
 * @author ${author}
 * @since ${date}
 */
#if(${entityLombokModel})
@Data
  #if(${superEntityClass})
@EqualsAndHashCode(callSuper = true)
  #else
@EqualsAndHashCode(callSuper = false)
  #end
  #if(${chainModel})
@Accessors(chain = true)
  #end
#end
#if(${table.convert})
@TableName("${table.name}")
#end
#if(${swagger2})
@ApiModel(value="${entity}Dto对象", description="$!{table.comment}")
#end
#if(${superEntityClass})
public class ${entity}Dto extends ${superEntityClass}#if(${activeRecord})<${entity}>#end {
#elseif(${activeRecord})
public class ${entity}Dto extends Model<${entity}> {
#else
public class ${entity}Dto implements Serializable {
#end

#if(${entitySerialVersionUID})
    private static final long serialVersionUID=1L;
#end
## ----------  BEGIN 字段循环遍历  ----------
#foreach($field in ${table.fields})

#if(${field.keyFlag})
#set($keyPropertyName=${field.propertyName})
#end
#if("$!field.comment" != "")
  #if(${swagger2})
    @ApiModelProperty(value = "${field.comment}")
  #else
    /**
     * ${field.comment}
     */
  #end
#end
#if(${field.keyFlag})
## 主键
  #if(${field.keyIdentityFlag})
    @TableId(value = "${field.annotationColumnName}", type = IdType.AUTO)
  #elseif(!$null.isNull(${idType}) && "$!idType" != "")
    @TableId(value = "${field.annotationColumnName}", type = IdType.${idType})
  #elseif(${field.convert})
    @TableId("${field.annotationColumnName}")
  #end
## 普通字段
#elseif(${field.fill})
## -----   存在字段填充设置   -----
  #if(${field.convert})
    @TableField(value = "${field.annotationColumnName}", fill = FieldFill.${field.fill})
  #else
    @TableField(fill = FieldFill.${field.fill})
  #end
#elseif(${field.convert})
    @TableField("${field.annotationColumnName}")
#end
## 乐观锁注解
#if(${versionFieldName}==${field.name})
    @Version
#end
## 逻辑删除注解
#if(${logicDeleteFieldName}==${field.name})
    @TableLogic
#end
    private ${field.propertyType} ${field.propertyName};
#end
## ----------  END 字段循环遍历  ----------

#if(!${entityLombokModel})
#foreach($field in ${table.fields})
  #if(${field.propertyType.equals("boolean")})
    #set($getprefix="is")
  #else
    #set($getprefix="get")
  #end

    public ${field.propertyType} ${getprefix}${field.capitalName}() {
        return ${field.propertyName};
    }

  #if(${chainModel})
    public ${entity} set${field.capitalName}(${field.propertyType} ${field.propertyName}) {
  #else
    public void set${field.capitalName}(${field.propertyType} ${field.propertyName}) {
  #end
        this.${field.propertyName} = ${field.propertyName};
  #if(${chainModel})
        return this;
  #end
    }
#end
## --foreach end---
#end
## --end of #if(!${entityLombokModel})--

#if(${entityColumnConstant})
  #foreach($field in ${table.fields})
    public static final String ${field.name.toUpperCase()} = "${field.name}";

  #end
#end
#if(${activeRecord})
    @Override
    protected Serializable pkVal() {
  #if(${keyPropertyName})
        return this.${keyPropertyName};
  #else
        return null;
  #end
    }

#end
#if(!${entityLombokModel})
    @Override
    public String toString() {
        return "${entity}{" +
  #foreach($field in ${table.fields})
    #if($!{foreach.index}==0)
        "${field.propertyName}=" + ${field.propertyName} +
    #else
        ", ${field.propertyName}=" + ${field.propertyName} +
    #end
  #end
        "}";
    }
#end
}

java复制代码public class CodeGenerator {

    public static void main(String[] args) {
        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir");
        gc.setOutputDir(projectPath + "/src/main/java");
        gc.setAuthor("海加尔金鹰（www.hjljy.cn）");
        gc.setOpen(false);
        //设置实体类后缀
        gc.setEntityName("%sPo");
        //实体属性 Swagger2 注解
        gc.setSwagger2(true);
        gc.setBaseColumnList(true);
        gc.setBaseResultMap(true);
        mpg.setGlobalConfig(gc);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://localhost:3306/springboot?serverTimezone=GMT&useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true");
        dsc.setDriverName("com.mysql.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("123456");
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setModuleName(null);
        String scanner = scanner("请输入整体业务包名");
        String modelName = StringUtils.isBlank(scanner) ? "" : "."+scanner;
        //moduleName是整体分模块

        pc.setParent("cn.hjljy.fastboot");
        pc.setMapper("mapper"+modelName);
        pc.setService("service"+modelName);
        pc.setServiceImpl("service"+modelName+".impl");
        pc.setEntity("pojo"+modelName+".po");
        pc.setController("controller"+modelName);
        mpg.setPackageInfo(pc);


        String dtoPath = pc.getParent() + ".pojo.dto";
        // 配置模板
        TemplateConfig templateConfig = new TemplateConfig();
        // 不输出默认的XML 默认生成的xml在mapper层里面
        templateConfig.setXml(null);
        mpg.setTemplate(templateConfig);

        //配置自定义输出的文件   xml和dto
        //模板引擎是 velocity
        String xmlTemplatePath = "/templates/mapper.xml.vm";
        // 自定义输出配置
        List<FileOutConfig> focList = new ArrayList<>();
        // 自定义配置会被优先输出
        focList.add(new FileOutConfig(xmlTemplatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 ， 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化！！
                return projectPath + "/src/main/resources/mapper/" + scanner
                        + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });

        String dtoTemplatePath = "/dto.java.vm";
        // 自定义配置会被优先输出
        focList.add(new FileOutConfig(dtoTemplatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 ， 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化！！
                return projectPath + "/src/main/java/cn/hjljy/fastboot/pojo/"+scanner+"/dto/" +
                        tableInfo.getEntityName() + "Dto" + StringPool.DOT_JAVA;
            }
        });

        // 自定义配置
        InjectionConfig cfg = new InjectionConfig() {

            @Override
            public void initMap() {
                Map<String, Object> map = new HashMap<>();
                map.put("dtoPackage", dtoPath);
                this.setMap(map);
            }
        };
        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);
        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
        strategy.setControllerMappingHyphenStyle(true);
        //设置逻辑删除字段
        strategy.setLogicDeleteFieldName("status");
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new VelocityTemplateEngine());
        mpg.execute();
    }

    /**
     * <p>
     * 读取控制台内容
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotEmpty(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("请输入正确的" + tip + "！");
    }
}

java复制代码@SpringBootApplication
@EnableAsync
public class ThreadpoolApplication {
    public static void main(String[] args) {
        SpringApplication.run(ThreadpoolApplication.class, args);
    }
}

java复制代码@Service
public class AsyncTest {
    protected final Logger logger = LoggerFactory.getLogger(this.getClass());
    @Async
    public void hello(String name){
    	//这里使用logger 方便查看执行的线程是什么
        logger.info("异步线程启动 started."+name);  
    }
}

java复制代码    @Autowired
    AsyncTest asyncTest;
    @Test
    void contextLoads() throws InterruptedException {
        asyncTest.hello("afsasfasf");
        //一定要休眠 不然主线程关闭了，子线程还没有启动
        Thread.sleep(1000);
    }

java复制代码@SpringBootTest
class ThreadPoolApplicationTests {
    protected final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Autowired
    AsyncTest asyncTest;
    @Autowired
    ThreadPoolTaskExecutor threadPoolTaskExecutor;
    @Test
    void contextLoads() throws InterruptedException {
        asyncTest.hello("async注解创建");
        threadPoolTaskExecutor.submit(new Thread(()->{
            logger.info("threadPoolTaskExecutor 创建线程");
        }));
        //一定要休眠 不然主线程关闭了，子线程还没有启动
        Thread.sleep(1000);
    }
}

xml复制代码# 核心线程数
spring.task.execution.pool.core-size=8  
# 最大线程数
spring.task.execution.pool.max-size=16
# 空闲线程存活时间
spring.task.execution.pool.keep-alive=60s
# 是否允许核心线程超时
spring.task.execution.pool.allow-core-thread-timeout=true
# 线程队列数量
spring.task.execution.pool.queue-capacity=100
# 线程关闭等待
spring.task.execution.shutdown.await-termination=false
spring.task.execution.shutdown.await-termination-period=
# 线程名称前缀
spring.task.execution.thread-name-prefix=task-

java复制代码    @Bean
    @ConditionalOnMissingBean
    public TaskExecutorBuilder taskExecutorBuilder(TaskExecutionProperties properties, ObjectProvider<TaskExecutorCustomizer> taskExecutorCustomizers, ObjectProvider<TaskDecorator> taskDecorator) {
        Pool pool = properties.getPool();
        TaskExecutorBuilder builder = new TaskExecutorBuilder();
        builder = builder.queueCapacity(pool.getQueueCapacity());
        builder = builder.corePoolSize(pool.getCoreSize());
        builder = builder.maxPoolSize(pool.getMaxSize());
        builder = builder.allowCoreThreadTimeOut(pool.isAllowCoreThreadTimeout());
        builder = builder.keepAlive(pool.getKeepAlive());
        Shutdown shutdown = properties.getShutdown();
        builder = builder.awaitTermination(shutdown.isAwaitTermination());
        builder = builder.awaitTerminationPeriod(shutdown.getAwaitTerminationPeriod());
        builder = builder.threadNamePrefix(properties.getThreadNamePrefix());
        Stream var10001 = taskExecutorCustomizers.orderedStream();
        var10001.getClass();
        builder = builder.customizers(var10001::iterator);
        builder = builder.taskDecorator((TaskDecorator)taskDecorator.getIfUnique());
        return builder;
    }

java复制代码 protected ExecutorService initializeExecutor(ThreadFactory threadFactory, RejectedExecutionHandler rejectedExecutionHandler) {
        BlockingQueue<Runnable> queue = this.createQueue(this.queueCapacity);
        ThreadPoolExecutor executor;
        if (this.taskDecorator != null) {
            executor = new ThreadPoolExecutor(this.corePoolSize, this.maxPoolSize, (long)this.keepAliveSeconds, TimeUnit.SECONDS, queue, threadFactory, rejectedExecutionHandler) {
                public void execute(Runnable command) {
                    Runnable decorated = ThreadPoolTaskExecutor.this.taskDecorator.decorate(command);
                    if (decorated != command) {
                        ThreadPoolTaskExecutor.this.decoratedTaskMap.put(decorated, command);
                    }

                    super.execute(decorated);
                }
            };
        } else {
            executor = new ThreadPoolExecutor(this.corePoolSize, this.maxPoolSize, (long)this.keepAliveSeconds, TimeUnit.SECONDS, queue, threadFactory, rejectedExecutionHandler);
        }

        if (this.allowCoreThreadTimeOut) {
            executor.allowCoreThreadTimeOut(true);
        }

        this.threadPoolExecutor = executor;
        return executor;
    }

java复制代码@Configuration
public class ThreadPoolConfig {

    @Bean("taskExecutor")
    public Executor taskExecutor() {
        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
        //设置线程池参数信息
        taskExecutor.setCorePoolSize(10);
        taskExecutor.setMaxPoolSize(50);
        taskExecutor.setQueueCapacity(200);
        taskExecutor.setKeepAliveSeconds(60);
        taskExecutor.setThreadNamePrefix("myExecutor--");
        taskExecutor.setWaitForTasksToCompleteOnShutdown(true);
        taskExecutor.setAwaitTerminationSeconds(60);
        //修改拒绝策略为使用当前线程执行
        taskExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        //初始化线程池
        taskExecutor.initialize();
        return taskExecutor;
    }
}

java复制代码@Configuration
public class ThreadPoolConfig {

       @Bean("taskExecutor")
    public Executor taskExecutor() {
        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
        //设置线程池参数信息
        taskExecutor.setCorePoolSize(10);
        taskExecutor.setMaxPoolSize(50);
        taskExecutor.setQueueCapacity(200);
        taskExecutor.setKeepAliveSeconds(60);
        taskExecutor.setThreadNamePrefix("myExecutor--");
        taskExecutor.setWaitForTasksToCompleteOnShutdown(true);
        taskExecutor.setAwaitTerminationSeconds(60);
        //修改拒绝策略为使用当前线程执行
        taskExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        //初始化线程池
        taskExecutor.initialize();
        return taskExecutor;
    }

    @Bean("poolExecutor")
    public Executor poolExecutor() {
        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
        //设置线程池参数信息
        taskExecutor.setCorePoolSize(10);
        taskExecutor.setMaxPoolSize(50);
        taskExecutor.setQueueCapacity(200);
        taskExecutor.setKeepAliveSeconds(60);
        taskExecutor.setThreadNamePrefix("myExecutor2--");
        taskExecutor.setWaitForTasksToCompleteOnShutdown(true);
        taskExecutor.setAwaitTerminationSeconds(60);
        //修改拒绝策略为使用当前线程执行
        taskExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        //初始化线程池
        taskExecutor.initialize();
        return taskExecutor;
    }

    @Bean("taskPoolExecutor")
    public Executor taskPoolExecutor() {
        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
        //设置线程池参数信息
        taskExecutor.setCorePoolSize(10);
        taskExecutor.setMaxPoolSize(50);
        taskExecutor.setQueueCapacity(200);
        taskExecutor.setKeepAliveSeconds(60);
        taskExecutor.setThreadNamePrefix("myExecutor3--");
        taskExecutor.setWaitForTasksToCompleteOnShutdown(true);
        taskExecutor.setAwaitTerminationSeconds(60);
        //修改拒绝策略为使用当前线程执行
        taskExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        //初始化线程池
        taskExecutor.initialize();
        return taskExecutor;
    }
}

java复制代码@Autowired
ThreadPoolTaskExecutor threadPoolTaskExecutor;

java复制代码    @Autowired
    AsyncTest asyncTest;
    @Autowired
    ThreadPoolTaskExecutor poolExecutor; //会去匹配 @Bean("poolExecutor") 这个线程池
    @Test
    void contextLoads() throws InterruptedException {
        asyncTest.hello("async注解创建");
        //一定要休眠 不然主线程关闭了，子线程还没有启动
        poolExecutor.submit(new Thread(()->{
            logger.info("threadPoolTaskExecutor 创建线程");
        }));
        Thread.sleep(1000);
    }

java复制代码	@Async("taskPoolExecutor")
    public void hello(String name){
        logger.info("异步线程启动 started."+name);
    }

makefile复制代码2.1.1）、指针碰撞: 是指内存是整齐有序情况下

2.1.2）、空闲列表: 内存存储不规整情况下

2.1.3）、内存是否整齐是由垃圾回收器是否带有空间压缩整理来决定的。

2.1.4) 、Serial、ParNew 等垃圾回收器带空间压缩整理

2.1.5) 、CMS这种基于清除算法垃圾回收器，只能采用空闲列表分配内存

bash复制代码2.2.1 、同步锁：JVM采用CAS方式失败重试方式来保证原子性。

2.2.2 、本地线程分配缓存区（TLAB）：按照不同线程划分不同空间中进行，每个线程在java堆中预先分配一块小内存，称为本地线程分配缓存区，那个线程需要分配就在对应的缓存区中分配，如果本地缓存区使用完了，分配新的缓存区在使用同步锁方式。是否使用TLAB,可通过配置参数决定（-XX：+/-useTALB）。以空间换取时间方式，默认大小是512k。

xml复制代码<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.hanhang</groupId>
    <artifactId>hotCode</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.22</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.26</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.26</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-vfs2</artifactId>
            <version>2.9.0</version>
        </dependency>
        <dependency>
            <groupId>com.thoughtworks.xstream</groupId>
            <artifactId>xstream</artifactId>
            <version>1.4.18</version>
        </dependency>
    </dependencies>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

</project>

java复制代码public interface IApplication {
    /**
     * 初始化
     */
    void init();

    /**
     * 执行
     */
    void execute();

    /**
     * 销毁
     */
    void destroy();
}

java复制代码public class TestApplication1 implements IApplication {
    @Override
    public void init() {
        System.out.println("TestApplication1--》3");
    }

    @Override
    public void execute() {
        System.out.println("TestApplication1--》execute");
    }

    @Override
    public void destroy() {
        System.out.println("TestApplication1--》destroy");
    }
}

java复制代码public interface IClassLoader {
    /**
     * 创建classLoader
     * @param parentClassLoader 父classLoader
     * @param paths 路径
     * @return 类加载器
     */
    ClassLoader createClassLoader(ClassLoader parentClassLoader, String...paths);
}

java复制代码import com.hanhang.inter.IClassLoader;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

/**
 * @author hanhang
 */
public class SimpleJarLoader implements IClassLoader {
    @Override
    public ClassLoader createClassLoader(ClassLoader parentClassLoader, String... paths) {
        List<URL> jarsToLoad = new ArrayList<>();
        for (String folder : paths) {
            List<String> jarPaths = scanJarFiles(folder);

            for (String jar : jarPaths) {

                try {
                    File file = new File(jar);
                    jarsToLoad.add(file.toURI().toURL());

                } catch (MalformedURLException e) {
                    e.printStackTrace();
                }
            }
        }

        URL[] urls = new URL[jarsToLoad.size()];
        jarsToLoad.toArray(urls);

        return new URLClassLoader(urls, parentClassLoader);
    }

    /**
     * 扫描文件
     * @param folderPath 文件路径
     * @return 文件列表
     */
    private List<String> scanJarFiles(String folderPath) {

        List<String> jars = new ArrayList<>();
        File folder = new File(folderPath);
        if (!folder.isDirectory()) {
            throw new RuntimeException("扫描的路径不存在, path:" + folderPath);
        }

        for (File f : Objects.requireNonNull(folder.listFiles())) {
            if (!f.isFile()) {
                continue;
            }
            String name = f.getName();

            if (name.length() == 0) {
                continue;
            }

            int extIndex = name.lastIndexOf(".");
            if (extIndex < 0) {
                continue;
            }

            String ext = name.substring(extIndex);
            if (!".jar".equalsIgnoreCase(ext)) {
                continue;
            }

            jars.add(folderPath + "/" + name);
        }
        return jars;
    }
}

java复制代码@Data
public class AppConfigList {
    private List<AppConfig> configs;

    @Data
    public static class AppConfig{
        private String name;

        private String file;
    }
}

java复制代码public class GlobalSetting {
    public static final String APP_CONFIG_NAME = "application.xml";
    public static final String JAR_FOLDER = "com/hanhang/app/";
}

xml复制代码<apps>
    <app>
        <name>TestApplication1</name>
        <file>com.hanhang.app.TestApplication1</file>
    </app>
</apps>

java复制代码public class JarFileChangeListener implements FileListener {
    @Override
    public void fileCreated(FileChangeEvent fileChangeEvent) throws Exception {
        String name = fileChangeEvent.getFileObject().getName().getBaseName().replace(".class","");

        ApplicationManager.getInstance().reloadApplication(name);
    }

    @Override
    public void fileDeleted(FileChangeEvent fileChangeEvent) throws Exception {
        String name = fileChangeEvent.getFileObject().getName().getBaseName().replace(".class","");

        ApplicationManager.getInstance().reloadApplication(name);
    }

    @Override
    public void fileChanged(FileChangeEvent fileChangeEvent) throws Exception {
        String name = fileChangeEvent.getFileObject().getName().getBaseName().replace(".class","");

        ApplicationManager.getInstance().reloadApplication(name);

    }
}

java复制代码import com.hanhang.config.AppConfigList;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;

/**
 * @author hanhang
 */
public class AppConfigManager {
    private final List<AppConfigList.AppConfig> configs;

    public AppConfigManager(){
        configs = new ArrayList<>();
    }

    /**
     * 加载配置
     * @param path 路径
     */
    public void loadAllApplicationConfigs(URI path){

        File file = new File(path);
        XStream xstream = getXmlDefine();
        try {
            AppConfigList configList = (AppConfigList)xstream.fromXML(new FileInputStream(file));

            if(configList.getConfigs() != null){
                this.configs.addAll(new ArrayList<>(configList.getConfigs()));
            }

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

    }

    /**
     * 获取xml配置定义
     * @return XStream
     */
    private XStream getXmlDefine(){
        XStream xstream = new XStream(new DomDriver());
        xstream.alias("apps", AppConfigList.class);
        xstream.alias("app", AppConfigList.AppConfig.class);
        xstream.aliasField("name", AppConfigList.AppConfig.class, "name");
        xstream.aliasField("file", AppConfigList.AppConfig.class, "file");
        xstream.addImplicitCollection(AppConfigList.class, "configs");
        Class<?>[] classes = new Class[] {AppConfigList.class,AppConfigList.AppConfig.class};
        xstream.allowTypes(classes);
        return xstream;
    }

    public final List<AppConfigList.AppConfig> getConfigs() {
        return configs;
    }

    public AppConfigList.AppConfig getConfig(String name){
        for(AppConfigList.AppConfig config : this.configs){
            if(config.getName().equalsIgnoreCase(name)){
                return config;
            }
        }
        return null;
    }
}

java复制代码import com.hanhang.config.AppConfigList;
import com.hanhang.config.GlobalSetting;
import com.hanhang.inter.IApplication;
import com.hanhang.inter.IClassLoader;
import com.hanhang.inter.impl.SimpleJarLoader;
import com.hanhang.listener.JarFileChangeListener;
import org.apache.commons.vfs2.*;
import org.apache.commons.vfs2.impl.DefaultFileMonitor;

import java.io.File;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;

/**
 * @author hanhang
 */
public class ApplicationManager {
    private static ApplicationManager instance;

    private IClassLoader jarLoader;
    private AppConfigManager configManager;

    private Map<String, IApplication> apps;

    private ApplicationManager(){
    }

    public void init(){
        jarLoader = new SimpleJarLoader();
        configManager = new AppConfigManager();
        apps = new HashMap<>();

        initAppConfigs();

        URL basePath = this.getClass().getClassLoader().getResource("");

        loadAllApplications(Objects.requireNonNull(basePath).getPath());

        initMonitorForChange(basePath.getPath());
    }

    /**
     * 初始化配置
     */
    public void initAppConfigs(){

        try {
            URL path = this.getClass().getClassLoader().getResource(GlobalSetting.APP_CONFIG_NAME);
            configManager.loadAllApplicationConfigs(Objects.requireNonNull(path).toURI());
        } catch (URISyntaxException e) {
            e.printStackTrace();
        }
    }

    /**
     * 加载类
     * @param basePath 根目录
     */
    public void loadAllApplications(String basePath){

        for(AppConfigList.AppConfig config : this.configManager.getConfigs()){
            this.createApplication(basePath, config);
        }
    }

    /**
     * 初始化监听器
     * @param basePath 路径
     */
    public void initMonitorForChange(String basePath){
        try {
            FileSystemManager fileManager = VFS.getManager();

            File file = new File(basePath + GlobalSetting.JAR_FOLDER);
            FileObject monitoredDir = fileManager.resolveFile(file.getAbsolutePath());
            FileListener fileMonitorListener = new JarFileChangeListener();
            DefaultFileMonitor fileMonitor = new DefaultFileMonitor(fileMonitorListener);
            fileMonitor.setRecursive(true);
            fileMonitor.addFile(monitoredDir);
            fileMonitor.start();
            System.out.println("Now to listen " + monitoredDir.getName().getPath());

        } catch (FileSystemException e) {
            e.printStackTrace();
        }
    }

    /**
     * 根据配置加载类
     * @param basePath 路径
     * @param config 配置
     */
    public void createApplication(String basePath, AppConfigList.AppConfig config){
        String folderName = basePath + GlobalSetting.JAR_FOLDER;
        ClassLoader loader = this.jarLoader.createClassLoader(ApplicationManager.class.getClassLoader(), folderName);

        try {
            Class<?> appClass = loader.loadClass(config.getFile());

            IApplication app = (IApplication)appClass.newInstance();

            app.init();

            this.apps.put(config.getName(), app);

        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) {
            e.printStackTrace();
        }
    }

    /**
     * 重新加载
     * @param name 类名
     */
    public void reloadApplication(String name){
        IApplication oldApp = this.apps.remove(name);

        if(oldApp == null){
            return;
        }

        oldApp.destroy();

        AppConfigList.AppConfig config = this.configManager.getConfig(name);
        if(config == null){
            return;
        }

        createApplication(getBasePath(), config);
    }

    public static ApplicationManager getInstance(){
        if(instance == null){
            instance = new ApplicationManager();
        }
        return instance;
    }

    /**
     * 获取类
     * @param name 类名
     * @return 缓存中的类
     */
    public IApplication getApplication(String name){
        if(this.apps.containsKey(name)){
            return this.apps.get(name);
        }
        return null;
    }

    public String getBasePath(){
        return Objects.requireNonNull(this.getClass().getClassLoader().getResource("")).getPath();
    }
}