spring mvc实现自定义注解

时间：2021-10-03 18:04:10

实现方式：使用@Aspect实现：

1.

新建注解接口：CheckSign

package com.soeasy.web.utils;

import org.springframework.core.Ordered;

import org.springframework.core.annotation.Order;

import java.lang.annotation.*;

/**

 * Created by Administrator on 2017/10/25 0025.

 */

@Documented

@Target({ElementType.METHOD}) //方法上

@Inherited

@Retention(RetentionPolicy.RUNTIME) //运行时

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

public @interface CheckSign {

}

2.

新建注解实现 CheckSignAspect 类：

package com.soeasy.web.utils;

import com.alibaba.fastjson.JSON;

import com.alibaba.fastjson.JSONObject;

import com.soeasy.commons.FailException;

import com.soeasy.utils.sign.Des3;

import com.soeasy.utils.sign.SignConf;

import org.apache.log4j.Logger;

import org.aspectj.lang.ProceedingJoinPoint;

import org.aspectj.lang.annotation.Around;

import org.aspectj.lang.annotation.Aspect;

import org.springframework.stereotype.Component;

import java.util.HashMap;

import java.util.LinkedHashMap;

import java.util.Map;

/**

 * 自定义注解@CheckSign的实现方法

 * Created by Administrator on 2017/10/25 0025.

 */

@Aspect

@Component

public class CheckSignAspect {

    private Logger log = Logger.getLogger(this.getClass());

    /**

     * 目标方法执行

     * @param pjp

     */

    @Around("@annotation(com.soeasy.web.utils.CheckSign)") //执行@接口

    public Object beforeExec(ProceedingJoinPoint pjp) throws Throwable {

        //获取request信息

        /*RequestAttributes ra = RequestContextHolder.getRequestAttributes();

        ServletRequestAttributes sra = (ServletRequestAttributes)ra;

        HttpServletRequest request = sra.getRequest();*/

        //获取post参数

        for (int i = 0; i < pjp.getArgs().length; i++) {

            if(pjp.getArgs()[i] instanceof LinkedHashMap || pjp.getArgs()[i] instanceof JSONObject){

                Map<String, Object> map = (Map<String,Object>) pjp.getArgs()[i];

            }

        }

        return pjp.proceed();

    }

}

相关文章