springboot-aop面向切面编程

需求：

    项目中需要记录用户操作信息，例如用户登陆系统后做了那些操作，需要有具体的日志记录。

解决办法：

1、编写操作记录日志业务类，在使用的方法中调用（一般记录方式）。

2、使用面向切面方式记录日志，例如针对某些业务处理方法进行日志记录。

3、通过注解方式，在调用的业务方法上增加日志类注解。

推荐使用第二、第三中方式，使用灵活，如果不需要日志记录，将切面取消即可，第一种不够灵活。一些介绍使用注解方式编写日志记录。

项目结构如下：

在pom.xml导入依赖包

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>com.example.springboot</groupId>
<artifactId>springboot-aop</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>springboot-aop</name>
<description>Demo project for Spring Boot</description>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.12.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.7</java.version>
</properties>

<dependencies>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- log4j 日志记录 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j</artifactId>
<version>1.3.5.RELEASE</version>
</dependency>
<!--aop依赖包-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<!-- 引入mybatis 数据库操作包 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>

<!-- 引入mybatis 分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>4.1.0</version>
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

</project>
在application.properties配置文件中增加数据库连接
#server.port=8090

#标示使用的是mysql/oracle/sqlserver
datasource.type=mysql
#mysql数据连接
spring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=root
#spring.datasource.max-active=20
#spring.datasource.max-idle=8
#spring.datasource.min-idle=8
#spring.datasource.initial-size=20

#mybatis 配置
# 配置映射文件加载
mybatis.mapper-locations=classpath*:mapper/**/*.xml
# 实体类通过别名使用
#mybatis.type-aliases-package=

自定义注解类

package com.example.springboot.aop.annotation;

import java.lang.annotation.*;

/**
*自定义注解 拦截Controller
*/

@Target({ElementType.PARAMETER, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface SystemControllerLog {
String LogAction() default "";
String LogContent() default "";
int ModuleID() default 0;
}
实体类

package com.example.springboot.aop.entity;

public class SystemLogModel {
private String LogAction;
private String LogContent;
private String FlagID;
private String FlagName;
private String LogIP;
private String TimeFlag;
private int ModuleID;

自定义切面类

package com.example.springboot.aop.aspect;

import com.example.springboot.aop.annotation.SystemControllerLog;
import com.example.springboot.aop.dao.SystemLogMapper;
import com.example.springboot.aop.entity.SystemLogModel;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
* 切点类
*/
@Aspect
@Component
public class SystemLogAspect {

// 本地异常日志记录对象
private static final Logger logger = LoggerFactory.getLogger(SystemLogAspect.class);

@Autowired
private SystemLogMapper systemLogMapper;

// Controller层切点,针对在业务模块标注SystemControllerLog注解记录日志
@Pointcut("@annotation( com.example.springboot.aop.annotation.SystemControllerLog )")
public void controllerAspect() {
}

/**
* 前置通知 用于拦截Controller层记录用户的操作
*
* @param joinPoint 切点
*/
@Before("controllerAspect()")
public void doBefore(JoinPoint joinPoint) {

HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder
.getRequestAttributes()).getRequest();
try {
// 请求的IP
String logIP = request.getHeader("X-Real-IP");
// if (StringUtils.isEmpty(logIP)) {
// logIP = request.getRemoteAddr();
// }
String userID = request.getParameter("UserID");
String userName = request.getParameter("UserName");
// if (StringUtils.isEmpty(userID) || StringUtils.isEmpty(userName)) {
// logger.debug("操作日志-->日志添加:用户名或用户ID为空，返回不添加日志!");
// return;
// }

SystemLogModel slm = getControllerMethodDescription(joinPoint);
slm.setLogIP(logIP);
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd hh:MM:ss");
String date = dateFormat.format(new Date());
slm.setTimeFlag(date);
slm.setFlagID(userID);
slm.setFlagName(userName);

// *========控制台输出=========*//
logger.debug("=====注解参数获取开始=====");
logger.debug("请求方法:"
+ (joinPoint.getTarget().getClass().getName() + "."
+ joinPoint.getSignature().getName() + "()"));
logger.debug("操作模块:" + slm.getModuleID());
logger.debug("操作方法:" + slm.getLogAction());
logger.debug("操作内容:" + slm.getLogContent());
logger.debug("请求IP:" + slm.getLogIP());
logger.debug("FlagID:" + slm.getFlagID());
logger.debug("FlagName:" + slm.getFlagName());
// *========数据库日志=========*//
int res = systemLogMapper.saveOrUpdate(slm);
if (res > 0) {
logger.info(">>>>>>>>保存日志成功");
}
} catch (Exception e) {
// 记录本地异常日志
logger.error("前置通知异常,保存日志异常信息:{}", e.getMessage());
}
}

/**
* 获取注解中对方法的描述信息 用于Controller层注解
*
* @param joinPoint 切点
* @return 方法描述
* @throws Exception
*/
public static SystemLogModel getControllerMethodDescription(
JoinPoint joinPoint) throws Exception {
String targetName = joinPoint.getTarget().getClass().getName();
String methodName = joinPoint.getSignature().getName();
Object[] arguments = joinPoint.getArgs();
Class targetClass = Class.forName(targetName);
Method[] methods = targetClass.getMethods();
String description = "";
SystemControllerLog log;
SystemLogModel logM = new SystemLogModel();
for (Method method : methods) {
if (method.getName().equals(methodName)) {
Class[] clazzs = method.getParameterTypes();
if (clazzs.length == arguments.length) {
log = method.getAnnotation(SystemControllerLog.class);
logM.setModuleID(log.ModuleID());
logM.setLogAction(log.LogAction());
logM.setLogContent(log.LogContent());
break;
}
}
}
return logM;
}
}

mapper接口

package com.example.springboot.aop.dao;

import com.example.springboot.aop.entity.SystemLogModel;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface SystemLogMapper {

//保存日志
public int saveOrUpdate(SystemLogModel systemLogModel);
}
mapper配置文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.example.springboot.aop.dao.SystemLogMapper">

<insert id="saveOrUpdate" parameterType="com.example.springboot.aop.entity.SystemLogModel">
insert into test_system_Operation_log(FlagID,FlagName,LogAction,LogContent,LogIP,ModuleID,TimeFlag)
values(#{FlagID},#{FlagName},#{LogAction},#{LogContent},#{LogIP},#{ModuleID},#{TimeFlag})
</insert>

</mapper>
创建controller类

package com.example.springboot.aop.controller;

import com.example.springboot.aop.annotation.SystemControllerLog;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

/**
* @desc aop测试日志记录
* @Author wangsh
* @date 2018/5/7 20:57
*/
@RestController
@RequestMapping("/aop")
public class AopController {

@SystemControllerLog(LogAction = "查询", ModuleID = 12, LogContent = "测试aop示例")
@ResponseBody
@RequestMapping("/hello")
public String hello() {

return "hello";
}
}

创建启动服务类

package com.example.springboot.aop;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

//配置扫描指定的包及包下的所以子集
@ComponentScan("com.example.springboot.aop")
@SpringBootApplication
public class SpringbootAopApplication {

public static void main(String[] args) {
SpringApplication.run(SpringbootAopApplication.class, args);
}
}
启动服务测试
浏览器访问： http://localhost:8080//aop/hello 

查看数据库记录：

以上就是aop切面及注解的使用。
---------------------
作者：1057718341_h
来源：CSDN
原文：https://blog.csdn.net/seashouwang/article/details/80232811
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