Java多线程--ThreadLocal - JAVA

static ThreadLocal threadLocal = new ThreadLocal<>(); // 实现线程范围内共享的核心代码 public static ThreadLocalData getThreadInstance() { ThreadLocalData instance = threadLocal.get(); if (instance == null) { instance = new ThreadLocalData(); threadLocal.set(instance); } return instance; } public ThreadLocalData(String name, int id) { this.name = name; this.id = id; } public String getName() {return name;} public void setName(String name) {this.name = name;} public int getId() {return id;} public void setId(int id) {this.id = id;} @Override public String toString() { return "ThreadLocalData [name=" + name + ", id=" + id + "]"; } } 【貌似袁老师将数据进一步封装了，嗯，有点面向对象的意思，还用到了单例设计模式，乍看起来是有那么一点点功底】【当然封装后调用起来更方便了，接下来袁老师在黑板找了个角落画出改变的调用代码】

Main方法有点小改变：

local.set(data);
// 改为
ThreadLocalData.getThreadInstance().setId(data);
ThreadLocalData.getThreadInstance()
	.setName("ysjian" + data);

A、B、C类中的getData()方法有点小改变：

System.out.println("A-->" + Thread.currentThread().getName()
	+ "-->get data-->" + local.get());
// 改为
System.out.println("A-->" + Thread.currentThread().getName()
	+ "get data-->" + ThreadLocalData.getThreadInstance());

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Java多线程--ThreadLocal(二)