SpringBoot 全局异常统一处理（AOP）：@RestControllerAdvice + @ExceptionHandler + @ResponseStatus

import org.springframework.http.HttpStatus;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.NoHandlerFoundException;
 
@RestControllerAdvice
public class GlobalExceptionHandler {
 
    @ExceptionHandler(NoHandlerFoundException.class)
    @ResponseStatus(HttpStatus.NOT_FOUND)
    public String handleNoHandlerFoundException() {
        return "No handler found for the request.";
    }
 
    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public String handleValidationExceptions(MethodArgumentNotValidException ex) {
        return "Validation failed: " + ex.getBindingResult().toString();
    }
 
    // 其他自定义异常处理...
}

这个代码示例展示了如何在Spring Boot应用中使用@RestControllerAdvice和@ExceptionHandler注解来实现全局异常处理。这里处理了两种常见的异常类型：NoHandlerFoundException和MethodArgumentNotValidException，并且通过@ResponseStatus注解返回了合适的HTTP状态码。开发者可以根据实际需求添加更多的异常处理逻辑。