飞奔的炮台 发表于 2021-10-17 13:41:19

SpringMVC记录我遇到的坑_AOP注解无效,切面不执行的解决

这篇文章主要介绍了SpringMVC记录我遇到的坑_AOP注解无效,切面不执行的解决方案,具有很好的参考价值,希望对大家有所帮助。如有错误或未考虑完全的地方,望不吝赐教
AOP注解无效,切面不执行的解决
想做一个api请求日志,想到使用aop,配置过程中遇到了一个坑,aop不起作用,
我的aop是这样的:


package com.ljwm.ibei.aspact;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import javax.servlet.http.HttpServletRequest;

/**
* Created by user on 2017/9/8.
*/
@Aspect
@Configuration
public class ApiRequestLog {
    private Logger _log = LoggerFactory.getLogger(ApiRequestLog.class);
    @Around("execution(* com.ljwm.ibei.controller.*.*(..))")
    public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
      RequestAttributes ra = RequestContextHolder.getRequestAttributes();
      ServletRequestAttributes sra = (ServletRequestAttributes) ra;
      HttpServletRequest request = sra.getRequest();

      String url = request.getRequestURL().toString();
      String method = request.getMethod();
      String uri = request.getRequestURI();
      String queryString = request.getQueryString();
      _log.debug("请求开始, 各个参数, url: {}, method: {}, uri: {}, params: {}", url, method, uri, queryString);
      Object result = pjp.proceed();
      return result;
    }
}
配置文件分成applicationContext.xml、applicationContext-mvc.xml还有mybatis和shiro的
web.xml配置:


<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
          http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">
<display-name>Archetype Created Web Application</display-name>

<filter>
    <filter-name>shiroFilter</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    <init-param>
      <param-name>targetFilterLifecycle</param-name>
      <param-value>true</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>shiroFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
    <servlet-name>spring-dispatcher</servlet-name>
    <servlet-class>
      org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring/applicationContext-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>spring-dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/applicationContext*.xml</param-value>
</context-param>
<filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<listener>
    <listener-class>com.ljwm.ibei.listener.ContextFinalizer</listener-class>
</listener>
</web-app>
我把<aop:aspectj-autoproxy proxy-target-class="true"/>写在applicationContext中,把<context:component-scan> 和 <mvc:annotation-driven>写在applicationContext-mvc中,发现aop没有执行,后来经过尝试发现,因为在初始化DispatchServlet的时候加载了mvc的配置,但是aop的代理却没有加载,导致其不能执行,我猜测是因为spring默认bean是单例的,
对已经初始化的bean容器不在做后续处理,由于是先加载的mvc所以是aop失效,我把aop代理的那个放到mvc中,aop就能执行了,不知道我的猜测对不对,还望大神赐教
另一个问题:
springmvc在controller层使用aop切面不成功解决
需要在配置文件中加入


<aop:aspectj-autoproxy proxy-target-class="true" />
以上为个人经验,希望能给大家一个参考,也希望大家多多支持CodeAE代码之家。
原文链接:https://blog.csdn.net/z781582206/article/details/77894774

http://www.zzvips.com/article/197821.html
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