java多线程使用mdc追踪日志方式

// 新建线程时：
Map<String, String> mdcContextMap = MDC.getCopyOfContextMap()
// 子线程运行时：
if(null != mdcContextMap){
    MDC.setContextMap(mdcContextMap);
}
// 销毁线程时
MDC.clear();

import org.slf4j.MDC;
import java.util.Map;
import java.util.concurrent.*;

public class MdcThreadPoolExecutor extends ThreadPoolExecutor {
    final private boolean useFixedContext;
    final private Map<String, Object> fixedContext;
    
    public static MdcThreadPoolExecutor newWithInheritedMdc(int corePoolSize, int maximumPoolSize, long keepAliveTime,
                                                            TimeUnit unit, BlockingQueue<Runnable> workQueue) {
        return new MdcThreadPoolExecutor(null, corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);
    }
    
    @SuppressWarnings("unchecked")
    public static MdcThreadPoolExecutor newWithCurrentMdc(int corePoolSize, int maximumPoolSize, long keepAliveTime,
                                                          TimeUnit unit, BlockingQueue<Runnable> workQueue) {
        return new MdcThreadPoolExecutor(MDC.getCopyOfContextMap(), corePoolSize, maximumPoolSize, keepAliveTime, unit,
                workQueue);
    }
    
    public static MdcThreadPoolExecutor newWithFixedMdc(Map<String, Object> fixedContext, int corePoolSize,
                                                        int maximumPoolSize, long keepAliveTime, TimeUnit unit,
                                                        BlockingQueue<Runnable> workQueue) {
        return new MdcThreadPoolExecutor(fixedContext, corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);
    }
    private MdcThreadPoolExecutor(Map<String, Object> fixedContext, int corePoolSize, int maximumPoolSize,
                                  long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue) {
        super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);
        this.fixedContext = fixedContext;
        useFixedContext = (fixedContext != null);
    }
    @SuppressWarnings("unchecked")
    private Map<String, Object> getContextForTask() {
        return useFixedContext ? fixedContext : MDC.getCopyOfContextMap();
    }
    
    @Override
    public void execute(Runnable command) {
        super.execute(wrap(command, getContextForTask()));
    }
    public static Runnable wrap(final Runnable runnable, final Map<String, Object> context) {
        return new Runnable() {
            @Override
            public void run() {
                Map previous = MDC.getCopyOfContextMap();
                if (context == null) {
                    MDC.clear();
                } else {
                    MDC.setContextMap(context);
                }
                try {
                    runnable.run();
                } finally {
                    if (previous == null) {
                        MDC.clear();
                    } else {
                        MDC.setContextMap(previous);
                    }
                }
            }
        };
    }
}

public class mainApp {
    public static void main(String[] args) {
        Thread t = new Thread(new Runnable() {
            @Override
            public void run() {
                //接收到一个request
                System.out.println("[Thread-"+ Thread.currentThread().getId() +"]开始发起请求");
                String[] data = {"异常数据","基本数据"};
                //创建子线程1，处理异常数据
                MThread mThread1 = new MThread(new Runnable() {
                    @Override
                    public void run() {
                        System.out.println("[Thread-"+ Thread.currentThread().getId() +"]处理了" + data[0]);
                    }
                });
                创建子线程2，处理普通数据
                MThread mThread2 = new MThread(new Runnable() {
                    @Override
                    public void run() {
                        System.out.println("[Thread-"+ Thread.currentThread().getId() +"]处理了"  + data[1]);
                    }
                });
                new Thread(mThread1).start();
                new Thread(mThread2).start(); 
            }
        });
        t.start();
    }
}
 
class MThread implements Runnable { 
    private Runnable r; 
    public MThread(Runnable r) {
        this.r = r;
    }
 
    @Override
    public void run() {
        r.run();
    }
}

public class mainApp {
    public static void main(String[] args) {
        Runnable runnable = new Runnable() {
            @Override
            public void run() {
                //AOP 生成一个traceId
                MDC.put("traceId", UUID.randomUUID().toString().replace("-", ""));
                //接收到一个request
                System.out.println("[Thread-"+ Thread.currentThread().getId() +"]traceId["+ MDC.get("traceId") +"]开始发起请求");
                String[] data = {"异常数据","基本数据"};
 
                MThread mThread1 = new MThread(new Runnable() {
                    @Override
                    public void run() {
                        System.out.println("[Thread-"+ Thread.currentThread().getId() +"]traceId["+ MDC.get("traceId") +"]处理了" + data[0]);
                    }
                }, MDC.getCopyOfContextMap());
                MThread mThread2 = new MThread(new Runnable() {
                    @Override
                    public void run() {
                        System.out.println("[Thread-"+ Thread.currentThread().getId() +"]traceId["+ MDC.get("traceId") +"]处理了"  + data[1]);
                    }
                }, MDC.getCopyOfContextMap());
                new Thread(mThread1).start();
                new Thread(mThread2).start(); 
            }
        };
        new Thread(runnable).start();
        new Thread(runnable).start();
    }
}
 
class MThread implements Runnable { 
    private Runnable r; 
    public MThread(Runnable r, Map<String, String> parentThreadMap) {
        LogProxy logProxy = new LogProxy(r, parentThreadMap);
        Runnable rProxy = (Runnable) Proxy.newProxyInstance(r.getClass().getClassLoader(), r.getClass().getInterfaces(), logProxy);
        this.r = rProxy;
    }
 
    @Override
    public void run() {
        r.run();
    }
}
 
//日志代理
class LogProxy implements InvocationHandler {
    private Runnable r;
    private  Map<String, String> parentThreadMap;
    public LogProxy(Runnable r, Map<String, String> parentThreadMap) {
        this.r = r;
        this.parentThreadMap = parentThreadMap;
    }
 
    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        if (method.getName().equals("run")) {
            MDC.setContextMap(parentThreadMap);
        }
        return method.invoke(r, args);
    }
}