ini复制代码<application
    android:icon="icon"
    android:roundIcon="icon">
    <activity
       // ...
    </activity>

    <activity-alias
        android:name=".MainActivityAlias"
        android:icon="icon_2"
        android:roundIcon="icon_2"
        android:targetActivity=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity-alias>
</application>

kotlin复制代码class IconChangeReceiver : BroadcastReceiver() {

    override fun onReceive(context: Context?, intent: Intent?) {
        if (intent?.action == "com.example.app.ACTION_CHANGE_ICON") {
            changeAppIcon(context)
        }
    }
    
    private fun changeAppIcon(context: Context?) {
        context?.let {
            // This is where the magic happens. We'll get to this in a bit!
        }
    }
}

ini复制代码<receiver
    android:name=".IconChangeReceiver"
    android:enabled="true"
    android:exported="true">
    <intent-filter>
        <action android:name="com.example.app.ACTION_CHANGE_ICON" />
    </intent-filter>
</receiver>

kotlin复制代码class IconChangeReceiver : BroadcastReceiver() {

    override fun onReceive(context: Context?, intent: Intent?) {
        if (intent?.action == "com.example.app.ACTION_CHANGE_ICON") {
            changeAppIcon(context)
        }
    }
    
    private fun changeAppIcon(context: Context?) {
        context?.let { ctx ->
            // Example: Conditionally select a different alias based on some criteria
            val aliasToEnable = when (someCondition) {
                true -> ctx.getString(R.string.alias_1)
                false -> ctx.getString(R.string.alias_2)
            }
            
            val aliasToDisable = when (aliasToEnable) {
                ctx.getString(R.string.alias_1) -> ctx.getString(R.string.alias_2)
                else -> ctx.getString(R.string.alias_1)
            }
            
            // Change the app icon by enabling one alias and disabling the other
            val packageManager = ctx.packageManager
            enableComponent(ctx, packageManager, aliasToEnable)
            disableComponent(ctx, packageManager, aliasToDisable)
        }
    }

    private fun enableComponent(
        context: Context, 
        packageManager: PackageManager, 
        componentNameString: String
    ) {
        val componentName = ComponentName(context, componentNameString)
        
        packageManager.setComponentEnabledSetting(
            componentName,
            PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
            PackageManager.DONT_KILL_APP
        )
    }

    private fun disableComponent(
        context: Context, 
        packageManager: PackageManager, 
        componentNameString: String
    ) {
        val componentName = ComponentName(context, componentNameString)
        
        packageManager.setComponentEnabledSetting(
            componentName,
            PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
            PackageManager.DONT_KILL_APP
        )
    }
}

scss复制代码val iconChangeIntent = Intent("com.example.app.ACTION_CHANGE_ICON")
sendBroadcast(iconChangeIntent)

ini复制代码val iconChangeIntent = Intent("com.example.app.ACTION_CHANGE_ICON")
context.sendBroadcast(iconChangeIntent)

shell复制代码flutter create --template=plugin --platforms=android,ios -i swift -a kotlin 项目名

# 如：
# flutter create --template=plugin --platforms=android,ios -i swift -a kotlin video_cache

diff复制代码#
# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
# Run `pod lib lint video_cache.podspec` to validate before publishing.
#
Pod::Spec.new do |s|
  s.name             = 'video_cache'
  s.version          = '0.0.1'
  s.summary          = 'A new Flutter plugin project.'
  s.description      = <<-DESC
A new Flutter plugin project.
                       DESC
  s.homepage         = 'http://example.com'
  s.license          = { :file => '../LICENSE' }
  s.author           = { 'Your Company' => 'email@example.com' }
  s.source           = { :path => '.' }
  s.source_files = 'Classes/**/*'
  s.dependency 'Flutter'
  s.platform = :ios, '11.0'

  # Flutter.framework does not contain a i386 slice.
  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
  s.swift_version = '5.0'

+  # KTVHTTPCache
+  s.dependency 'KTVHTTPCache', '~> 3.0.0'
end

diff复制代码...
android {
    ...

    dependencies {
        testImplementation 'org.jetbrains.kotlin:kotlin-test'
        testImplementation 'org.mockito:mockito-core:5.0.0'
+        implementation 'com.danikula:videocache:2.7.1'
    }

    ...
}

diff复制代码// build.gradle

allprojects {
    repositories {
+        maven { url "https://jitpack.io" }
+        maven { url 'https://maven.aliyun.com/repository/public' }
        google()
        mavenCentral()
    }
}
...

diff复制代码// settings.gradle

pluginManagement {
    ...
    repositories {
+        maven { url "https://jitpack.io" }
+        maven { url 'https://maven.aliyun.com/repository/public' }
        google()
        mavenCentral()
        gradlePluginPortal()
    }
}
...

yaml复制代码dev_dependencies:
  pigeon: ^17.3.0

shell复制代码.
├── lib
│   ├── ...
│   └── ...
├── pigeons
│   ├── cache.dart
│   └── ...
├── ...

dart复制代码import 'package:pigeon/pigeon.dart';

// https://github.com/flutter/packages/blob/main/packages/pigeon/example/README.md
@ConfigurePigeon(PigeonOptions(
  dartOut: 'lib/plugin/pigeon.g.dart',
  kotlinOut:
      'android/src/main/kotlin/com/lxf/video_cache/VideoCacheGeneratedApis.g.kt',
  kotlinOptions: KotlinOptions(
    // https://github.com/fluttercommunity/wakelock_plus/issues/18
    errorClassName: "LXFVideoCacheFlutterError",
  ),
  swiftOut: 'ios/Classes/LXFVideoCacheGeneratedApis.g.swift',
))
@HostApi()
abstract class LXFVideoCacheHostApi {
  /// 转换为缓存代理URL
  String convertToCacheProxyUrl(String url);
}

shell复制代码flutter pub run pigeon --input pigeons/cache.dart

shell复制代码Type FlutterError is defined multiple times

dart复制代码@ConfigurePigeon(PigeonOptions(
  ...
  kotlinOptions: KotlinOptions(
    // https://github.com/fluttercommunity/wakelock_plus/issues/18
    errorClassName: "LXFVideoCacheFlutterError"
  ),
  ...
))

shell复制代码cd example/ios 
pod install --repo-update

swift复制代码// VideoCachePlugin.swift

import Flutter
import UIKit
import KTVHTTPCache

// 创建插件时自动生成的类
public class VideoCachePlugin: NSObject, FlutterPlugin {
  public static func register(with registrar: FlutterPluginRegistrar) {
    // 注册实现
    LXFVideoCacheHostApiSetup.setUp(
      binaryMessenger: registrar.messenger(), 
      api: LXFVideoCacheHostApiImplementation()
    )
  }
}

class LXFVideoCacheHostApiImplementation: LXFVideoCacheHostApi {
  /// 是否可以代理
  private var canProxy: Bool?
  
  func convertToCacheProxyUrl(url: String) throws -> String {
    // 还未试过开启代理服务
    if (self.canProxy == nil) {
      self.canProxy = ((try? KTVHTTPCache.proxyStart()) != nil)
    }
    // 无法代理
    if !self.canProxy! { return url }
    // 无法转 URL 对象
    guard let urlObj = URL(string: url) else { return url }
    
    guard let proxyUrlObj = KTVHTTPCache.proxyURL(withOriginalURL: urlObj) else {
      // 代理失败
      return url
    }
    // 代理成功
    return proxyUrlObj.absoluteString
  }
}

kotlin复制代码package com.lxf.video_cache

import LXFVideoCacheHostApi
import com.danikula.videocache.HttpProxyCacheServer

import io.flutter.embedding.engine.plugins.FlutterPlugin
import io.flutter.plugin.common.MethodCall
import io.flutter.plugin.common.MethodChannel.MethodCallHandler
import io.flutter.plugin.common.MethodChannel.Result

/** VideoCachePlugin */
class VideoCachePlugin : FlutterPlugin, MethodCallHandler {

    private lateinit var videoCacheHostApiImplementation: LXFVideoCacheHostApiImplementation

    override fun onAttachedToEngine(flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
        videoCacheHostApiImplementation = LXFVideoCacheHostApiImplementation(flutterPluginBinding)
        // 初始化插件
        LXFVideoCacheHostApi.setUp(
                flutterPluginBinding.binaryMessenger,
                videoCacheHostApiImplementation,
        )
    }

    override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
        // 关闭服务
        videoCacheHostApiImplementation.shutdown()
    }

    override fun onMethodCall(call: MethodCall, result: Result) {}
}

class LXFVideoCacheHostApiImplementation(
        private val flutterPluginBinding: FlutterPlugin.FlutterPluginBinding
) : LXFVideoCacheHostApi {
    /// 懒加载缓存服务
    private val cacheServer by lazy { HttpProxyCacheServer.Builder(flutterPluginBinding.applicationContext).build() }

    /// 重写并通过 cacheServer 将原 url 转换为具备缓存功能的 url
    override fun convertToCacheProxyUrl(url: String): String {
        return cacheServer.getProxyUrl(url)
    }

    /// 关闭服务
    fun shutdown() {
        cacheServer.shutdown()
    }
}

yaml复制代码dependencies:
  video_cache: latest_version

dart复制代码// 导入
import 'package:video_cache/video_cache.dart';

// 将原视频链接转为缓存代理链接
String url = 'https://flutter.github.io/assets-for-api-docs/assets/videos/bee.mp4';
url = await VideoCache().convertToCacheProxyUrl(url);

// url转换结果
// http://localhost:50050/https%3A%2F%2Fflutter%2Egithub%2Eio%2Fassets%2Dfor%2Dapi%2Ddocs%2Fassets%2Fvideos%2Fbee%2Emp4/KTVHTTPCachePlaceHolder/KTVHTTPCacheLastPathComponent.mp4

bash复制代码type 'FlutterError' does not conform to protocol 'Error'

swift复制代码// https://github.com/flutter/flutter/issues/136081
extension FlutterError: Error {}

tsx复制代码import React from "react";
import ReactDOM from "react-dom";
import dayjs from "dayjs";
import LoadRemoteComponent from "./components/LoadRemoteComponent";

<LoadRemoteComponent
  urls={["https://cdnjs.cloudflare.com/ajax/libs/antd/5.16.2/antd.min.js"]}
  name="antd.Button"
  options={{
    props: {
      type: "primary",
      loading: true,
    },
    externals: {
      react: {
        import: React,
        export: "React",
      },
      "react-dom": {
        import: ReactDOM,
        export: "ReactDOM",
      },
      dayjs: {
        import: dayjs,
        export: "dayjs",
      },
    },
  }}
>
  按钮文字
</LoadRemoteComponent>;

vue复制代码<template>
  <LoadRemoteComponent
    :urls="urls"
    name="ElementPlus.ElButton"
    :options="options"
  >
    按钮文字
  </LoadRemoteComponent>
</template>

<script setup lang="ts">
import { ref, onMounted } from "vue";
import LoadRemoteComponent from "./components/LoadRemoteComponent/Index.vue";

const urls = ref([
  "https://cdnjs.cloudflare.com/ajax/libs/element-plus/2.7.0/index.full.min.js",
  "https://cdnjs.cloudflare.com/ajax/libs/element-plus/2.7.0/index.min.css",
]);

const options = ref({
  props: {
    type: "primary",
    loading: true,
  },
  externals: {
    vue: {
      import: "",
      export: "Vue",
    },
  },
});

onMounted(() => {
  import("vue").then((vue) => {
    options.value.externals["vue"].import = vue;
  });
});
</script>

php复制代码compileOnly 'androidx.recyclerview:recyclerview:1.0.0'
compileOnly 'androidx.legacy:legacy-support-v4:1.0.0'
compileOnly 'androidx.appcompat:appcompat:1.0.0'
compileOnly 'com.alibaba:fastjson:1.2.83'
compileOnly fileTree(include: ['uniapp-v8-release.aar'], dir: '../app/libs')

scala复制代码package com.test.testplugin;
import com.alibaba.fastjson.JSONObject;
import io.dcloud.feature.uniapp.annotation.UniJSMethod;
import io.dcloud.feature.uniapp.bridge.UniJSCallback;
import io.dcloud.feature.uniapp.common.UniModule;
public class TestModule extends UniModule {
    @UniJSMethod(uiThread = false)
    public void open(UniJSCallback callback) {
        JSONObject data = new JSONObject();
        data.put("hello world:","插件调用成功");
        callback.invoke(data);
    }
}

json复制代码{
  "nativePlugins":[
    {
      "hooksClass":"",
      "plugins":[
        {
          "type":"module",
          "name":"Test-Plugin",
          "class":"com.test.testplugin.TestModule"
        }
      ]
    }
  ]
}

swift复制代码import SwiftUI

struct ContentView: View {
    @State private var birthDay = Date()
    
    var body: some View {
        DatePicker(selection: $birthDay, displayedComponents: [.hourAndMinute，.date]) {
            Text("出生日期")
        }
        .environment(\.locale, Locale(identifier: "zh_Hans_CN"))
        .padding()
    }
}

swift复制代码import SwiftUI

struct ContentView: View {
    @State private var selectedDate = Date()
    var formatter: DateFormatter {
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss"
        return dateFormatter
    }

    var body: some View {
        VStack {
            DatePicker(
                selection: $selectedDate,
                displayedComponents: [.hourAndMinute, .date],
                label: { Text("选择日期") }
            )
            .padding()

            Text(formatter.string(from: selectedDate))
        }
    }
}

vbnet复制代码import SwiftUI

struct ContentView: View {
    let date = Date()

    var formatter: DateFormatter {
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss"
        return dateFormatter
    }

    var body: some View {
        VStack {
            Text("\(date)")

            Text(formatter.string(from: date))
        }
    }
}

swift复制代码import SwiftUI

struct ContentView: View {
    var date = Date()

    var body: some View {
        VStack {
            Text(date, style: .date)

            Text(date, style: .time)

            Text(date, style: .relative)

            Text(date, style: .offset)

            Text(date.addingTimeInterval(600), style: .timer)

            Text(date.getCurrentTime(), style: .timer)
        }
    }
}

extension Date {
    func getCurrentTime() -> Date {
        let calendar: Calendar = Calendar.current
        let year = calendar.component(.year, from: self)
        let month = calendar.component(.month, from: self)
        let day = calendar.component(.day, from: self)
        let components = DateComponents(year: year, month: month, day: day, hour: 0, minute: 0, second: 0)
        return Calendar.current.date(from: components)!
    }
}

swift复制代码import SwiftUI

struct ContentView: View {
    var date = Date.now

    var body: some View {
        VStack {
            Text(date.formatted(.dateTime.locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.day().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.week().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.weekday().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.weekday(.wide).locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.month().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.month(.wide).locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.year().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.day().weekday().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.day().weekday().month().locale(Locale(identifier: "zh_Hans_CN"))))

            Text(date.formatted(.dateTime.day().month().year().locale(Locale(identifier: "zh_Hans_CN"))))
        }
    }
}

javascript复制代码function a() {
    function b() {
        var b = 55
        console.log(a);
    }
    var a = 200
    b()
}
var glob = 50
a()

javascript复制代码function a() {}
var glob = 50
a()

javascript复制代码Activation Object={
	a:undefined, (形参)
    a:undefined (实参)
}//是错误的

因为对象里不能存在相同的键，所以如果会进行重叠覆盖

Activation Object={
	a:undefined 
}

javascript复制代码Activation Object={
	a:undefined
}

javascript复制代码Activation Object={
	a:undefined, 
    b:function
}

javascript复制代码function a() {
    function b() {
        var b = 55
        console.log(a);
    }
    var a = 200
    b()
}

css复制代码Activation Object={
	a:200, 
    b:function
}

javascript复制代码Activation Object={
	b:undefined
}

javascript复制代码Activation Object={
	b:55
}

javascript复制代码function a() {
    function b() {
        var b = 55
        console.log(a);
    }
    var a = 200
    b()
}
var glob = 50
a()

javascript复制代码function test(a, b) {
    console.log(a);       
    c = 0
    var c;
    a = 3
    b = 2
    console.log(b);       
    function b() { }
    console.log(b);       
}
test(1)

php复制代码/* 三角形ABC */
const A=new Vector3(0, 0, 0,)
const B=new Vector3(0, 0, -1)
const C=new Vector3(1, 0, -1)
// 背面是否可选
let backfaceCulling=false

/* 射线 */
// 射线原点
const O=new Vector3(0,1,0)
//射线方向
const d=new Vector3(0.2,-1,-0.8)

/* 射线与三角形的求交 */
// 射线的反方向
const _d=new Vector3(-d.x,-d.y,-d.z)
// 向量AB
const AB=new Vector3().subVectors( B, A )
// 向量AC
const AC=new Vector3().subVectors( C, A )
// AB和AC垂线，其长度是以AB,AC为临边的平行四边形的面积
const n=new Vector3().crossVectors( AB, AC )
// 矩阵[-d,AB,AC]的行列式，即以-d,AB,AC为临边的平行六面体的有向体积
let det = _d.dot( n )
if ( det < 0 ) {
  if ( backfaceCulling ){
    return null
  }
} else if ( det === 0 ) {
  return null;
}
// 点A到射线源点的向量
const AO=new Vector3().subVectors( O, A )
// 从射线的原点O 向着射线的方向d 推进的距离
const t=AO.dot( n )/det
// 当t<0的时候，向射线反方向推进，与实际不符
if ( t < 0 ) {
  return null
}
// AO在AB上的投影坐标
const u =  _d.dot(new Vector3().crossVectors( AO, AC ))/det;
if ( u < 0 ) {
  return null
}
// AO在AC上的投影坐标
const v =  _d.dot(new Vector3().crossVectors( AB, AO ) )/det;
if ( v < 0 ) {
  return null
}
// 当u + v >1时会超出三角形的范围
if ( u + v >1  ) {
  return null
}
// r ( t ) = O + t d
const p=O.clone().add(d.clone().multiplyScalar(t))

kotlin复制代码intersectTriangle( a, b, c, backfaceCulling, target ) {
        // Compute the offset origin, edges, and normal.
        // from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h
        _edge1.subVectors( b, a );
        _edge2.subVectors( c, a );
        _normal.crossVectors( _edge1, _edge2 );

        // Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
        // E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
        //   |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
        //   |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
        //   |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)
        let DdN = this.direction.dot( _normal );
        let sign;
        if ( DdN > 0 ) {
            if ( backfaceCulling ) return null;
            sign = 1;
        } else if ( DdN < 0 ) {
            sign = - 1;
            DdN = - DdN;
        } else {
            return null;
        }
        _diff.subVectors( this.origin, a );
        const DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );

        // b1 < 0, no intersection
        if ( DdQxE2 < 0 ) {
            return null;
        }

        const DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );
        // b2 < 0, no intersection
        if ( DdE1xQ < 0 ) {
            return null;
        }

        // b1+b2 > 1, no intersection
        if ( DdQxE2 + DdE1xQ > DdN ) {
            return null;
        }

        // Line intersects triangle, check if ray does.
        const QdN = - sign * _diff.dot( _normal );

        // t < 0, no intersection
        if ( QdN < 0 ) {
            return null;
        }

        // Ray intersects triangle.
        return this.at( QdN / DdN, target );
    }

java复制代码@Data
@TableName("t_menu")
public class MenuEntity {
    @TableId(type = IdType.AUTO)
    private Integer id;
    private String name;
    private Integer parentId;
}

java复制代码@Mapper
public interface MenuMapper extends BaseMapper<MenuEntity> {
}

java复制代码public interface MenuService extends IService<MenuEntity> {
    List<MenuVo> listTree();
}

java复制代码@Service
public class MenuServiceImpl extends ServiceImpl<MenuMapper, MenuEntity> implements MenuService {
}

java复制代码@Data
public class MenuVo {
    /**
     * ID
     */
    private Integer id;
    /**
     * 菜单名称
     */
    private String name;
    /**
     * 子菜单集合
     */
    private List<MenuVo> subMenus;
}

java复制代码public interface MenuService extends IService<MenuEntity> {
    List<MenuVo> listTree();
}

java复制代码@Service
public class MenuServiceImpl extends ServiceImpl<MenuMapper, MenuEntity> implements MenuService {
    /**
     * 返回树形菜单数据
     *
     * @return
     */
    @Override
    public List<MenuVo> listTree() {
        List<MenuEntity> list = list();
        return getSubMenus(list, 0);
    }

    /**
     * 根据传入的菜单id 封装子菜单树形数据
     *
     * @param list
     * @param parentId
     * @return
     */
    private List<MenuVo> getSubMenus(List<MenuEntity> list, Integer parentId) {
        return list.stream()
                //筛选出当前菜单id的直接子菜单
                .filter(menu -> parentId.equals(menu.getParentId()))
                .map(menu -> {
                    MenuVo vo = new MenuVo();
                    //封装vo
                    BeanUtils.copyProperties(menu, vo);
                    //通过递归的方式，封装当前菜单的子菜单
                    vo.setSubMenus(getSubMenus(list, menu.getId()));
                    return vo;
                }).collect(Collectors.toList());
    }
}

java复制代码@Data
public class MenuVo {
    /**
     * ID
     */
    private Integer id;
    /**
     * 菜单名称
     */
    private String name;
    /**
     * 子菜单集合
     */
    private List<MenuVo> subMenus;
    /**
     * 当前菜单层级信息：即面包屑数据
     */
    private List<String> titles;
}

java复制代码@Service
public class MenuServiceImpl extends ServiceImpl<MenuMapper, MenuEntity> implements MenuService {
    /**
     * 返回树形菜单数据
     *
     * @return
     */
    @Override
    public List<MenuVo> listTree() {
        List<MenuEntity> list = list();
        return getSubMenus(list, 0, new ArrayList<>());
    }

    /**
     * 根据传入的菜单id 封装子菜单树形数据
     *
     * @param list
     * @param parentId
     * @return
     */
    private List<MenuVo> getSubMenus(List<MenuEntity> list, Integer parentId, List<String> titles) {
        return list.stream()
                //筛选出当前菜单id的直接子菜单
                .filter(menu -> parentId.equals(menu.getParentId()))
                .map(menu -> {
                    MenuVo vo = new MenuVo();
                    //封装vo
                    BeanUtils.copyProperties(menu, vo);
                    //封装面包屑信息
                    int size = titles.size();
                    titles.add(menu.getName());
                    vo.setTitles(new ArrayList<>(titles));
                    //通过递归的方式，封装当前菜单的子菜单
                    vo.setSubMenus(getSubMenus(list, menu.getId(), titles));
                    //进行回溯操作，将截至到本层菜单的标题信息都删除
                    //这里直接使用 titles.indexOf(title)，也是因为菜单名称一般都不会重复。如果会重复，可以采取其他处理方式
                    titles.removeIf((title) -> titles.indexOf(title) >= size);
                    return vo;
                }).collect(Collectors.toList());
    }
}

javascript复制代码// 发送一个 GET 请求
axios({ 
  method: 'get',
  url: 'https://jsonplaceholder.typicode.com/comments'
  params: { postId: 1 }
}) 

// 发送一个 POST 请求
axios({
  method: 'post'
  url: 'https://jsonplaceholder.typicode.com/posts',
  data: {
    title: 'foo',
    body: 'bar',
    userId: 1,
  }
})

javascript复制代码// /v1.6.8/lib/core/Axios.js#L38
async request(configOrUrl, config) {
    try {
      return await this._request(configOrUrl, config);
    } catch (err) {}
}

javascript复制代码// /v1.6.8/lib/core/Axios.js#L62
_request(configOrUrl, config) {
    if (typeof configOrUrl === 'string') {
      config = config || {};
      config.url = configOrUrl;
    } else {
      config = configOrUrl || {};
    }

    // ...
}

javascript复制代码// 调用方式一
axios('https://jsonplaceholder.typicode.com/posts/1')
// 调用方式二
axios({
  method: 'get',
  url: 'https://jsonplaceholder.typicode.com/posts/1'
})

javascript复制代码// /v1.6.8/lib/core/Axios.js#L169-L173
try {
  promise = dispatchRequest.call(this, newConfig);
} catch (error) {
  return Promise.reject(error);
}

javascript复制代码// /v1.6.8/lib/core/dispatchRequest.js#L34
export default function dispatchRequest(config) { /* ... */ }

javascript复制代码// /v1.6.8/lib/core/dispatchRequest.js#L49
const adapter = adapters.getAdapter(config.adapter || defaults.adapter);

javascript复制代码// /v1.6.8/lib/defaults/index.js#L40
adapter: ['xhr', 'http'],

javascript复制代码// /v1.6.8/lib/adapters/adapters.js#L2-L9
import httpAdapter from './http.js';
import xhrAdapter from './xhr.js';

const knownAdapters = {
  http: httpAdapter,
  xhr: xhrAdapter
}

javascript复制代码// /v1.6.8/lib/adapters/adapters.js#L27-L75
export default {
  getAdapter: (adapters) => {
    // 1)
    adapters = Array.isArray(adapters) ? adapters : [adapters];

    let nameOrAdapter;
    let adapter;
    
    // 2)
    for (let i = 0; i < adapters.length; i++) {
      nameOrAdapter = adapters[i];
      adapter = nameOrAdapter;
      
      // 3)
      if (!isResolvedHandle(nameOrAdapter)) {
        adapter = knownAdapters[String(nameOrAdapter).toLowerCase()];
      }

      if (adapter) {
        break;
      }
    }

    // 4)
    if (!adapter) {
      throw new AxiosError(
        `There is no suitable adapter to dispatch the request `,
        'ERR_NOT_SUPPORT'
      );
    }

    return adapter;
  }
}

javascript复制代码// `adapter` allows custom handling of requests which makes testing easier.
// Return a promise and supply a valid response (see lib/adapters/README.md).
adapter: function (config) {
  /* ... */
},

javascript复制代码// /v1.6.8/lib/adapters/adapters.js#L28
adapters = Array.isArray(adapters) ? adapters : [adapters];

javascript复制代码// /v1.6.8/lib/adapters/adapters.js#L37
let nameOrAdapter = adapters[i];
adapter = nameOrAdapter;

javascript复制代码// /v1.6.8/lib/adapters/adapters.js#L42-L48
if (!isResolvedHandle(nameOrAdapter)) {
  adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()];
}

javascript复制代码// /v1.6.8/lib/adapters/adapters.js#L24
const isResolvedHandle = (adapter) => typeof adapter === 'function' || adapter === null || adapter === false;

javascript复制代码// /v1.6.8/lib/adapters/xhr.js#L48
const isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined';
export default isXHRAdapterSupported && function (config) {/* ...*/}

// /v1.6.8/lib/adapters/http.js#L160
const isHttpAdapterSupported = typeof process !== 'undefined' && utils.kindOf(process) === 'process';
export default isHttpAdapterSupported && function httpAdapter(config) {/* ... */}

javascript复制代码if (!isResolvedHandle(nameOrAdapter)) {/* ... */}

javascript复制代码if (adapter) {
  break;
}

javascript复制代码// 4)
if (!adapter) {
  throw new AxiosError(
    `There is no suitable adapter to dispatch the request `,
    'ERR_NOT_SUPPORT'
  );
}

return adapter;