如何解決SpringBoot 加入AOP后無(wú)法注入的問(wèn)題

更新時(shí)間：2021年06月24日 08:36:03 作者：love13135816

這篇文章主要介紹了如何解決SpringBoot 加入AOP后無(wú)法注入的問(wèn)題，具有很好的參考價(jià)值，希望對(duì)大家有所幫助。如有錯(cuò)誤或未考慮完全的地方，望不吝賜教

SpringBoot 開啟AOP后出現(xiàn)無(wú)法注入的問(wèn)題真是坑的很啊~

提示錯(cuò)誤

org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type

或者

java.lang.ClassCastException: com.sun.proxy.$Proxy12 cannot be cast to cn.edu.nuc.SpringTest.service.impl.DemoServiceImpl

解決方案

在application.properties中添加配置

#true為使用CGLIB代理，false為JDK代理，默認(rèn)為false
spring.aop.proxy-target-class=true

引以為戒啊!!!!!!!

springboot使用aop攔截controller干一些事導(dǎo)致service們@Autowired全部注入失敗

springboot使用aop攔截controller干一些事導(dǎo)致controller里的service們@Autowired全部注入失敗，報(bào)空指針

先集成使用aop吧

<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

properties修改

#aop
spring.aop.proxy-target-class=true
spring.aop.auto=true

proxy-target-class屬性值決定是基于接口的還是基于類的代理被創(chuàng)建。如果proxy-target-class 屬性值被設(shè)置為true，那么基于類的代理將起作用（這時(shí)需要cglib庫(kù)）。

如果proxy-target-class屬值被設(shè)置為false或者這個(gè)屬性被省略，那么標(biāo)準(zhǔn)的JDK 基于接口的代理將起作用。

然后直接貼一個(gè)模型代碼吧

import cc.datebook.utils.IpUtil;
import com.google.gson.Gson;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.servlet.HandlerMapping;
import javax.servlet.http.HttpServletRequest;
import java.util.Map;
/**
 * Created by wangH on 2017/12/12.
 */
@Aspect
@Configuration
public class ControllerMonitorAop {
    private static final Logger logger = LoggerFactory.getLogger(ControllerMonitorAop.class);
    ThreadLocal<Long> startTime = new ThreadLocal<>();
    
    @Pointcut("execution(public * cc.datebook.web.*Controller.*(..))")
    public void excudeService() {}
    @Around("excudeService()")
    public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
        RequestAttributes ra = RequestContextHolder.getRequestAttributes();
        ServletRequestAttributes sra = (ServletRequestAttributes) ra;
        HttpServletRequest request = sra.getRequest();
        String ipAddr = IpUtil.getIpAddr(request);
        String url = request.getRequestURL().toString();
        String method = request.getMethod();
        String uri = request.getRequestURI();
        String queryString = request.getQueryString();
        String params = "";
        if ("POST".equals(method)) {
            Object[] paramsArray = pjp.getArgs();
            params = argsArrayToString(paramsArray);
        } else {
            Map<?, ?> paramsMap = (Map<?, ?>) request.getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
            params = paramsMap.toString();
        }
        logger.info("request begin=>ipAddr: {}, url: {}, method: {}, uri: {}, params: {}", ipAddr, url, method, uri, params);
        // result的值就是被攔截方法的返回值
        Object result = pjp.proceed();
        Gson gson = new Gson();
        String ab = gson.toJson(result).toString();
        if (ab.length() > 200){
            ab = ab.substring(0,200);
        }
        logger.info("request end=>" + ab);
        return result;
    }
    /**
     * 請(qǐng)求參數(shù)拼裝
     * @param paramsArray
     * @return
     */
    private String argsArrayToString(Object[] paramsArray) {
        String params = "";
        if (paramsArray != null && paramsArray.length > 0) {
            for (int i = 0; i < paramsArray.length; i++) {
                Gson gson = new Gson();
                Object jsonObj = gson.toJson(paramsArray[i]);
                params += jsonObj.toString() + " ";
            }
        }
        return params.trim();
    }
}

但是攔截所有controller之后發(fā)現(xiàn) service都注入失敗