错误处理，工具拓展

src/main/java/com/jsl/oa/controllers/CustomController.java

@@ -0,0 +1,22 @@
+package com.jsl.oa.controllers;
+
+import com.jsl.oa.utils.BaseResponse;
+import com.jsl.oa.utils.ResultUtil;
+import org.springframework.boot.web.servlet.error.ErrorController;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class CustomController implements ErrorController {
+
+    @RequestMapping("/")
+    public BaseResponse index() {
+        return ResultUtil.success("欢迎使用JSL-OA系统，服务器处于正常状态");
+    }
+
+    @RequestMapping("/error")
+    public ResponseEntity<BaseResponse> handleError() {
+        return ResultUtil.error("PageNotFound", 404, "请求资源不存在");
+    }
+}

src/main/java/com/jsl/oa/exception/ProcessException.java

@@ -0,0 +1,17 @@
+package com.jsl.oa.exception;
+
+import com.jsl.oa.utils.BaseResponse;
+import com.jsl.oa.utils.ResultUtil;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.HttpRequestMethodNotSupportedException;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+
+@ControllerAdvice
+public class ProcessException {
+
+    @ExceptionHandler(value = HttpRequestMethodNotSupportedException.class)
+    public ResponseEntity<BaseResponse> methodNotAllowedException() {
+        return ResultUtil.error("MethodNotAllowed", 405, "请求方法错误");
+    }
+}

src/main/java/com/jsl/oa/utils/ResultUtil.java

@@ -1,5 +1,7 @@
 package com.jsl.oa.utils;
 
+import org.springframework.http.ResponseEntity;
+
 public class ResultUtil {
 
     public static BaseResponse success() {
@@ -25,4 +27,13 @@ public class ResultUtil {
     public static BaseResponse error(ErrorCode errorCode, Object data) {
         return new BaseResponse(errorCode.getOutput(), errorCode.getCode(), errorCode.getMessage(), data);
     }
+
+    public static BaseResponse error(String output, Integer code, String message, Object data) {
+        return new BaseResponse(output, code, message, data);
+    }
+
+    public static ResponseEntity<BaseResponse> error(String output, Integer code, String message) {
+        return ResponseEntity.status(code)
+                .body(new BaseResponse(output, code, message));
+    }
 }