Update README.md

README.md

 # 《SpringBoot 中间件设计和开发》 专栏介绍文档
 
-![](https://codechina.csdn.net/MiddlewareDesign/doc/-/raw/master/assert/head.png)
+![](https://gitcode.net/MiddlewareDesign/doc/-/raw/master/assert/head.png)
 ---
 
 ⛳**目录**
 
-- [重点说明 🍁`(源码授权以及失败解决方案)`](https://codechina.csdn.net/MiddlewareDesign/doc/-/blob/master/README.md#%E9%87%8D%E7%82%B9%E8%AF%B4%E6%98%8E)
-- [作者介绍](https://codechina.csdn.net/MiddlewareDesign/doc#%E4%BD%9C%E8%80%85%E4%BB%8B%E7%BB%8D)
-- [小册内容](https://codechina.csdn.net/MiddlewareDesign/doc#%E5%B0%8F%E5%86%8C%E5%86%85%E5%AE%B9)
-- [中间件设计和实现列表](https://codechina.csdn.net/MiddlewareDesign/doc#%E4%B8%AD%E9%97%B4%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%92%8C%E5%AE%9E%E7%8E%B0%E5%88%97%E8%A1%A8)
-- [你会学到什么？](https://codechina.csdn.net/MiddlewareDesign/doc#%E4%BD%A0%E4%BC%9A%E5%AD%A6%E5%88%B0%E4%BB%80%E4%B9%88)
-- [适宜人群](https://codechina.csdn.net/MiddlewareDesign/doc#%E9%80%82%E5%AE%9C%E4%BA%BA%E7%BE%A4)
-- [小册购买优惠](https://codechina.csdn.net/MiddlewareDesign/doc#%E5%B0%8F%E5%86%8C%E8%B4%AD%E4%B9%B0%E4%BC%98%E6%83%A0)
-- [收尾感谢](https://codechina.csdn.net/MiddlewareDesign/doc#%E6%94%B6%E5%B0%BE%E6%84%9F%E8%B0%A2)
+- [重点说明 🍁`(源码授权以及失败解决方案)`](https://gitcode.net/MiddlewareDesign/doc/-/blob/master/README.md#%E9%87%8D%E7%82%B9%E8%AF%B4%E6%98%8E)
+- [作者介绍](https://gitcode.net/MiddlewareDesign/doc#%E4%BD%9C%E8%80%85%E4%BB%8B%E7%BB%8D)
+- [小册内容](https://gitcode.net/MiddlewareDesign/doc#%E5%B0%8F%E5%86%8C%E5%86%85%E5%AE%B9)
+- [中间件设计和实现列表](https://gitcode.net/MiddlewareDesign/doc#%E4%B8%AD%E9%97%B4%E4%BB%B6%E8%AE%BE%E8%AE%A1%E5%92%8C%E5%AE%9E%E7%8E%B0%E5%88%97%E8%A1%A8)
+- [你会学到什么？](https://gitcode.net/MiddlewareDesign/doc#%E4%BD%A0%E4%BC%9A%E5%AD%A6%E5%88%B0%E4%BB%80%E4%B9%88)
+- [适宜人群](https://gitcode.net/MiddlewareDesign/doc#%E9%80%82%E5%AE%9C%E4%BA%BA%E7%BE%A4)
+- [小册购买优惠](https://gitcode.net/MiddlewareDesign/doc#%E5%B0%8F%E5%86%8C%E8%B4%AD%E4%B9%B0%E4%BC%98%E6%83%A0)
+- [收尾感谢](https://gitcode.net/MiddlewareDesign/doc#%E6%94%B6%E5%B0%BE%E6%84%9F%E8%B0%A2)
 
 ## 📝重点说明
 
@@ -21,10 +21,10 @@
     
     | 授权样式 |
     | ------ |
-    | ![](https://codechina.csdn.net/MiddlewareDesign/doc/-/raw/master/assert/check.png) |
+    | ![](https://gitcode.net/MiddlewareDesign/doc/-/raw/master/assert/check.png) |
      
 
-    授权后打开链接，就可以看到专栏源码了：[https://codechina.csdn.net/MiddlewareDesign](https://codechina.csdn.net/MiddlewareDesign) 
+    授权后打开链接，就可以看到专栏源码了：[https://gitcode.net/MiddlewareDesign](https://gitcode.net/MiddlewareDesign) 
 
 3. **授权说明**：仅对购买 [`专栏付费`](https://juejin.cn/book/6940996508632219689) 并已经在公众号：[bugstack虫洞栈](https://bugstack.cn/assets/images/qrcode.png) 回复过 `中间件源码授权` 的用户进行审核授权。
 
@@ -36,7 +36,7 @@
    
     | 提交案例 |
     | ------ |
-    | ![](https://codechina.csdn.net/MiddlewareDesign/doc/-/raw/master/assert/%E5%88%86%E6%94%AF%E5%90%88%E5%B9%B6.png) |
+    | ![](https://gitcode.net/MiddlewareDesign/doc/-/raw/master/assert/%E5%88%86%E6%94%AF%E5%90%88%E5%B9%B6.png) |