全局拦截sa-token 异常，并提醒用户异常原因

src/main/java/com/yupi/springbootinit/common/ErrorCode.java

@@ -13,6 +13,7 @@ public enum ErrorCode {
     NOT_LOGIN_ERROR(40100, "未登录"),
     USERNAME_OR_PASSWORD_ERROR(40200, "账号或密码错误"),
     USER_DISABLE(40300, "用户被禁用"),
+    TOKEN_INVALID(40400, "Token无效，请重新登录"),
     NO_AUTH_ERROR(40101, "无权限"),
     NOT_FOUND_ERROR(40400, "请求数据不存在"),
     FORBIDDEN_ERROR(40300, "禁止访问"),

src/main/java/com/yupi/springbootinit/config/SaTokenConfigure.java

@@ -2,6 +2,8 @@ package com.yupi.springbootinit.config;
 
 import cn.dev33.satoken.interceptor.SaInterceptor;
 import cn.dev33.satoken.stp.StpUtil;
+import com.yupi.springbootinit.common.ErrorCode;
+import com.yupi.springbootinit.exception.BusinessException;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@@ -11,9 +13,9 @@ public class SaTokenConfigure implements WebMvcConfigurer {
     @Override
     public void addInterceptors(InterceptorRegistry registry) {
         // 注册Sa-Token的拦截器
-        registry.addInterceptor(new SaInterceptor(handle -> StpUtil.checkLogin()))
-                .addPathPatterns("/**")
-                .excludePathPatterns(getExcludePaths());
+            registry.addInterceptor(new SaInterceptor(handle -> StpUtil.checkLogin()))
+                    .addPathPatterns("/**")
+                    .excludePathPatterns(getExcludePaths());
     }
     
     /**
@@ -33,7 +35,6 @@ public class SaTokenConfigure implements WebMvcConfigurer {
             "/favicon.ico",
             // 你的其他放行路径，例如登录接口
             "/user/doLogin"
-//            "/save_data/add_host"
         };
     }
 }

src/main/java/com/yupi/springbootinit/exception/GlobalExceptionHandler.java

@@ -1,5 +1,7 @@
 package com.yupi.springbootinit.exception;
 
+import cn.dev33.satoken.exception.NotLoginException;
+import cn.dev33.satoken.util.SaResult;
 import com.yupi.springbootinit.common.BaseResponse;
 import com.yupi.springbootinit.common.ErrorCode;
 import com.yupi.springbootinit.common.ResultUtils;
@@ -28,4 +30,44 @@ public class GlobalExceptionHandler {
         log.error("RuntimeException", e);
         return ResultUtils.error(ErrorCode.SYSTEM_ERROR, "系统错误");
     }
+
+    // 全局异常拦截（拦截项目中的NotLoginException异常）
+    @ExceptionHandler(NotLoginException.class)
+    public BaseResponse<?> handlerNotLoginException(NotLoginException nle)
+            throws Exception {
+
+        // 打印堆栈，以供调试
+        nle.printStackTrace();
+
+        // 判断场景值，定制化异常信息
+        String message = "";
+        if(nle.getType().equals(NotLoginException.NOT_TOKEN)) {
+            message = "未能读取到有效用户令牌";
+        }
+        else if(nle.getType().equals(NotLoginException.INVALID_TOKEN)) {
+            message = "令牌无效";
+        }
+        else if(nle.getType().equals(NotLoginException.TOKEN_TIMEOUT)) {
+            message = "令牌已过期";
+        }
+        else if(nle.getType().equals(NotLoginException.BE_REPLACED)) {
+            message = "令牌已被顶下线";
+        }
+        else if(nle.getType().equals(NotLoginException.KICK_OUT)) {
+            message = "令牌已被踢下线";
+        }
+        else if(nle.getType().equals(NotLoginException.TOKEN_FREEZE)) {
+            message = "令牌已被冻结";
+        }
+        else if(nle.getType().equals(NotLoginException.NO_PREFIX)) {
+            message = "未按照指定前缀提交令牌";
+        }
+        else {
+            message = "当前会话未登录";
+        }
+
+        // 返回给前端
+        return ResultUtils.error(ErrorCode.SYSTEM_ERROR.getCode(),message);
+    }
+
 }