spring 路由优先级注解 spring优先级order

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mob6454cc6b8546 2024-08-16 18:16:41

文章标签 spring 路由优先级注解 spring 异常处理 java 文章分类 架构后端开发

1.背景：公司框架做了全局异常处理，如当前接口定义请求方式是POST,但在调用的时候却使用 GET

　　后台：

Resolved [org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'GET' not supported]

　　postman:

{
    "timestamp": "2022-04-02T06:35:53.646+00:00",
    "status": 405,
    "error": "Method Not Allowed",
    "message": "",
    "path": "/sendMessage"
}

　　公司框架返回：

{"status":0,"statusText":"Success","data":null}

　　1.2 问题出在明明这个接口报错，返回的却是success 得重新处理一下这种异常

3. debug打断点发现公司引用的包已经定义了全局异常处理，返回的实体类默认就是 0 success

spring 路由优先级注解 spring优先级order_java

4.解决方案代码中写一个异常处理类，并设置其优先级

package ins.business.common.exception;

import ins.framework.web.ApiResponse;
import ins.framework.web.advice.GlobalExceptionHandler;
import org.springframework.core.annotation.Order;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;

/**
 * 自定义异常
 */
@ControllerAdvice
@Order(1)
public class MyControllerAdvice {
    @ResponseBody
    @ExceptionHandler(value = Exception.class)
    public ApiResponse<String> exceptionHandler(Exception ex){
        ApiResponse<String> apiResponse = new ApiResponse<>();
        apiResponse.setStatus(1);
        apiResponse.setStatusText(ex.getMessage());
        return apiResponse;
    }
  
}

5.order注解的理解

　　order注解主要用来控制配置类的加载顺序：数字越小，越先加载

常用注解使用总结系列: @Order 注解

短信平台项目启动加载配置信息到redis 的时候使用 order注解：实现ApplicationRunner接口,执行顺序按照value值决定,值小先执行

6.设置Oder最高优先级代码

//最高优先级
@Order(Ordered.HIGHEST_PRECEDENCE)

spring 路由优先级注解 spring优先级order_java_02

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