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Spring動(dòng)態(tài)代理實(shí)現(xiàn)日志功能詳解

更新時(shí)間：2021年08月17日 11:02:52 作者：haijiao12138

這篇文章主要為大家詳細(xì)介紹了Spring動(dòng)態(tài)代理實(shí)現(xiàn)日志功能，文中示例代碼介紹的非常詳細(xì)，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

代理模式（Proxy）是通過(guò)代理對(duì)象訪問(wèn)目標(biāo)對(duì)象，這樣可以在目標(biāo)對(duì)象基礎(chǔ)上增強(qiáng)額外的功能，如添加權(quán)限，訪問(wèn)控制和審計(jì)等功能。

1.自定義業(yè)務(wù)接口

package com.haijiao12138.demo.spring.agentLog0815;
 
/**
 * @author: haijiao12138
 * @ClassName: BusinessClassService
 * @description: TODO
 * @date: 2021/8/15 14:33
 */
public interface BusinessClassService {
 
    public void doSomeThing();//自定義接口
 
}

2.自定義業(yè)務(wù)接口實(shí)現(xiàn)類

package com.haijiao12138.demo.spring.agentLog0815;
 
/**
 * @author: haijiao12138
 * @ClassName: BusinessClassServiceImpl
 * @description: 業(yè)務(wù)類
 * @date: 2021/8/15 14:34
 */
public class BusinessClassServiceImpl implements BusinessClassService {
 
    //執(zhí)行某事
    @Override
    public void doSomeThing() {
        System.out.println("doing  somthing......");
    }
}

3.日志接口和實(shí)現(xiàn)類

package com.haijiao12138.demo.spring.agentLog0815;
 
import java.lang.reflect.Method;
 
/**
 * @author: haijiao12138
 * @ClassName: MyLogger
 * @description:日志類接口
 * @date: 2021/8/15 14:38
 */
public interface MyLogger {
 
    //記錄進(jìn)入方法時(shí)間
    public void saveIntoMethodTime(Method method);
 
    //記錄退出方法的時(shí)間
    public void saveOutMethodTime(Method method);
}

package com.haijiao12138.demo.spring.agentLog0815;
 
import java.lang.reflect.Method;
import java.util.Date;
 
/**
 * @author: haijiao12138
 * @ClassName: MyLoggerImpl
 * @description: TODO  日志實(shí)現(xiàn)類
 * @date: 2021/8/15 14:40
 */
public class MyLoggerImpl  implements MyLogger{
    @Override
    public void saveIntoMethodTime(Method method) {
        System.out.println("進(jìn)入" + method.getName()  +"方法時(shí)間為: " + new Date());
    }
 
    @Override
    public void saveOutMethodTime(Method method) {
        System.out.println("退出" + method.getName() + "方法時(shí)間為：" + new Date());
    }
}

4.下面是日志類的handler實(shí)現(xiàn)：

package com.haijiao12138.demo.spring.agentLog0815;
 
import java.lang.reflect.Method;
import java.util.Date;
 
/**
 * @author: haijiao12138
 * @ClassName: MyLoggerImpl
 * @description: TODO  日志實(shí)現(xiàn)類
 * @date: 2021/8/15 14:40
 */
public class MyLoggerImpl  implements MyLogger{
    @Override
    public void saveIntoMethodTime(Method method) {
        System.out.println("進(jìn)入" + method.getName()  +"方法時(shí)間為: " + new Date());
    }
 
    @Override
    public void saveOutMethodTime(Method method) {
        System.out.println("退出" + method.getName() + "方法時(shí)間為：" + new Date());
    }
}

5.測(cè)試類

package com.haijiao12138.demo.spring.agentLog0815;
 
import java.lang.reflect.Proxy;
 
/**
 * @author: haijiao12138
 * @ClassName: MyLoggerTest
 * @description: TODO 日志測(cè)試類
 * @date: 2021/8/15 14:43
 */
public class MyLoggerTest {
    public static void main(String[] args) {
        /** 實(shí)例化真實(shí)項(xiàng)目中業(yè)務(wù)類 **/
        BusinessClassService businessClassService = new BusinessClassServiceImpl();
        /** 日志類的handler **/
        MyLoggerHandler myLoggerHandler = new MyLoggerHandler(businessClassService);
        /** 獲得代理類對(duì)象 **/
        BusinessClassService businessClass = (BusinessClassService) Proxy.newProxyInstance(businessClassService.getClass().getClassLoader(), businessClassService.getClass().getInterfaces(),myLoggerHandler);
        /** 執(zhí)行代理類方法 **/
        businessClass.doSomeThing();
 
    }
 
}

結(jié)果輸出：