[refractor] update threadlocal

README.md

@@ -34,17 +34,23 @@
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+          <img src="https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-7/WechatIMG1.png" style="margin: 0 auto;width:450px" /></a>
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+        <a href="https://faxian.lagou.com/discover/05a25f7c41404735b01b7f2a61bcf833.html?ver=2">
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 ## 目录
 
 - [Java](#java)

docs/java/Multithread/JavaConcurrencyAdvancedCommonInterviewQuestions.md

@@ -338,11 +338,11 @@ ThreadLocalMap(ThreadLocal<?> firstKey, Object firstValue) {
 
 比如我们在同一个线程中声明了两个 `ThreadLocal` 对象的话，会使用 `Thread`内部都是使用仅有那个`ThreadLocalMap` 存放数据的，`ThreadLocalMap`的 key 就是 `ThreadLocal`对象，value 就是 `ThreadLocal` 对象调用`set`方法设置的值。
 
-![ThreadLocal数据结构](https://upload-images.jianshu.io/upload_images/7432604-ad2ff581127ba8cc.jpg?imageMogr2/auto-orient/strip|imageView2/2/w/806)
+![ThreadLocal数据结构](images/threadlocal数据结构.png)
 
 `ThreadLocalMap`是`ThreadLocal`的静态内部类。
 
-![ThreadLocal内部类](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-6/ThreadLocal内部类.png)
+![ThreadLocal内部类](images/ThreadLocal内部类.png)
 
 ### 3.4. ThreadLocal 内存泄露问题