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概述

使用

創建ThreadLocalUtil工具類

utils/ThreadLocalUtil.java

package org.example.utils;/*** ThreadLocal 工具類*/
@SuppressWarnings("all")
public class ThreadLocalUtil {//提供ThreadLocal對象,private static final ThreadLocal THREAD_LOCAL = new ThreadLocal();//根據鍵獲取值public static <T> T get(){return (T) THREAD_LOCAL.get();}//存儲鍵值對public static void set(Object value){THREAD_LOCAL.set(value);}//清除ThreadLocal 防止內存泄漏public static void remove(){THREAD_LOCAL.remove();}
}

在登錄攔截器中使用ThreadLocal存儲登錄用戶名

interceptors/LoginInteceptor.java

//將解析用戶名保存到ThreadLocal中
ThreadLocalUtil.set(claims);

請求處理完成后，清空ThreadLocal中的數據,防止內存泄漏

@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {// 請求處理完成后，清空ThreadLocal中的數據ThreadLocalUtil.remove();
}

在/userInfo接口中獲取登錄用戶名

controller/UserController.java

//從threadLocal中獲取用戶信息
Map<String, Object> claims = ThreadLocalUtil.get();
String username = (String) claims.get("username");

注意事項

參考視頻

https://www.bilibili.com/video/BV14z4y1N7pg?spm_id_from=333.788.player.switch&vd_source=0467ab39cc5ec5940fee22a0e7797575&p=23