Spring Boot 统一异常处理的案例

ゝ一纸荒年。 2024-02-18 16:49 12阅读 0赞

统一异常处理:统一处理程序中抛出的所有或特定异常.

1.返回页面的数据类型为:Json格式

package com.example.demo.error;
    
    /**
     * Create by szw on 2017/11/29 16:31
     */
    public class ErrorInfo<T> {
        public static final Integer OK = 0;
        public static final Integer ERROR = 100;
    
        private Integer code;
        private String message;
        private T data;
    
        public static Integer getOK() {
            return OK;
        }
    
        public static Integer getERROR() {
            return ERROR;
        }
    
        public Integer getCode() {
            return code;
        }
    
        public void setCode(Integer code) {
            this.code = code;
        }
    
        public String getMessage() {
            return message;
        }
    
        public void setMessage(String message) {
            this.message = message;
        }
    
        public T getData() {
            return data;
        }
    
        public void setData(T data) {
            this.data = data;
        }
    }

2.自定义异常类

package com.example.demo.exception;
    
    import sun.plugin2.message.Message;
    
    /**
     * Create by szw on 2017/11/29 16:32
     */
    public class MyException extends Exception {
        public MyException(String message) {
            super(message);
        }
    }

3.统一异常处理

package com.example.demo.exception;
    
    /**
     * Create by szw on 2017/11/29 15:59
     */
    
    import com.example.demo.error.ErrorInfo;
    import org.springframework.web.bind.annotation.ControllerAdvice;
    import org.springframework.web.bind.annotation.ExceptionHandler;
    import org.springframework.web.bind.annotation.ResponseBody;
    import org.springframework.web.servlet.ModelAndView;
    import javax.servlet.http.HttpServletRequest;
    
    /**
     * 统一异常处理
     */
    @ControllerAdvice
    class GlobalExceptionHandler {
        public static final String DEFAULT_ERROR_VIEW = "error";
        @ExceptionHandler(value = MyException.class)
        @ResponseBody
        public ErrorInfo defaultErrorHandler(HttpServletRequest req, MyException e) throws Exception {
            ErrorInfo<String> stringErrorInfo = new ErrorInfo<>();
            stringErrorInfo.setMessage(e.getMessage());
            stringErrorInfo.setCode(ErrorInfo.ERROR);
            stringErrorInfo.setData("some date");
            return stringErrorInfo;
        }
    }