exception handling : aop

restful-web-service/src/main/java/com/example/restfulwebservice/exception/CustomizedResponseEntityExceptionHandler.java

@@ -0,0 +1,33 @@
+package com.example.restfulwebservice.exception;
+
+import com.example.restfulwebservice.user.UserNotFoundException;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.context.request.WebRequest;
+import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
+
+import java.util.Date;
+
+@RestController
+@ControllerAdvice
+public class CustomizedResponseEntityExceptionHandler extends ResponseEntityExceptionHandler {
+
+    @ExceptionHandler(Exception.class)
+    public final ResponseEntity<Object> handleAllException(Exception ex, WebRequest request) {
+        ExceptionResponse exceptionResponse =
+                new ExceptionResponse(new Date(), ex.getMessage(), request.getDescription(false));
+
+        return new ResponseEntity(exceptionResponse, HttpStatus.INTERNAL_SERVER_ERROR);
+    }
+
+    @ExceptionHandler(UserNotFoundException.class)
+    public final ResponseEntity<Object> handleUserNotFoundException(Exception ex, WebRequest request) {
+        ExceptionResponse exceptionResponse =
+                new ExceptionResponse(new Date(), ex.getMessage(), request.getDescription(false));
+
+        return new ResponseEntity(exceptionResponse, HttpStatus.NOT_FOUND);
+    }
+}

restful-web-service/src/main/java/com/example/restfulwebservice/exception/ExceptionResponse.java

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+package com.example.restfulwebservice.exception;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.Date;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class ExceptionResponse {
+    private Date timestamp;
+    private String message;
+    private String details;
+}