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SpringCloud(第 048 篇)使用AOP统一处理Web请求日志

Vixb / 1705人阅读

SpringCloud(第 048 篇)使用AOP统一处理Web请求日志

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一、大致介绍
1、AOP是Spring框架中的一个重要内容,它通过对既有程序定义一个切入点,然后在其前后切入不同的执行内容,比如常见的有:打开数据库连接/关闭数据库连接、打开事务/关闭事务、记录日志等;
2、基于AOP不会破坏原来程序逻辑,因此它可以很好的对业务逻辑的各个部分进行隔离,从而使得业务逻辑各部分之间的耦合度降低,提高程序的可重用性,同时提高了开发的效率。
二、实现步骤 2.1 添加 maven 引用包


    4.0.0

    springms-aop-weblog
    1.0-SNAPSHOT
    jar
    
    
        com.springms.cloud
        springms-spring-cloud
        1.0-SNAPSHOT
    
    
    
        
        
            org.springframework.boot
            spring-boot-starter-data-jpa
        

        
        
            org.springframework.boot
            spring-boot-starter-web
        

        
        
            com.h2database
            h2
            runtime
        

        
        
            org.springframework.boot
            spring-boot-starter-data-solr
        
    

2.2 添加应用配置文件(springms-aop-weblogsrcmainresourcesapplication.yml)
server:
  port: 8350
spring:
  application:
    name: springms-aop-weblog  #全部小写
  jpa:
    generate-ddl: false
    show-sql: true
    hibernate:
      ddl-auto: none
  datasource:
    platform: h2
    schema: classpath:schema.sql
    data: classpath:data.sql
2.3 添加 H2 数据库脚本(springms-aop-weblogsrcmainresourcesschema.sql)
drop table user if exists;

CREATE TABLE USER(
    id BIGINT GENERATED by default as identity,
    username VARCHAR(40),
    name VARCHAR(20),
    age int(3),
    balance DECIMAL(10, 2),
    PRIMARY KEY(id)
);
2.4 插入 H2 数据库一些初始化数据(springms-aop-weblogsrcmainresourcesdata.sql)
INSERT into user (id, username, name, age, balance) values (1, "user1", "张三", 20, 100.00);
INSERT into user (id, username, name, age, balance) values (2, "user2", "李四", 22, 100.00);
INSERT into user (id, username, name, age, balance) values (3, "user3", "王五", 24, 100.00);
INSERT into user (id, username, name, age, balance) values (4, "user4", "赵六", 26, 100.00);
INSERT into user (id, username, name, age, balance) values (5, "user5", "李逵", 27, 100.00);
INSERT into user (id, username, name, age, balance) values (6, "user6", "张远", 10, 100.00);
INSERT into user (id, username, name, age, balance) values (7, "user7", "迪拜", 60, 100.00);
INSERT into user (id, username, name, age, balance) values (8, "user8", "哈士奇", 40, 100.00);
INSERT into user (id, username, name, age, balance) values (9, "user9", "关羽", 30, 100.00);
2.5 添加访问底层数据模型的DAO接口(springms-aop-weblogsrcmainjavacomspringmscloudrepositoryUserRepository.java)
package com.springms.cloud.repository;

import com.springms.cloud.entity.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface UserRepository extends JpaRepository {

}
2.6 添加实体用户类User(springms-aop-weblogsrcmainjavacomspringmscloudentityUser.java)
package com.springms.cloud.entity;

import java.math.BigDecimal;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class User {
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  private Long id;

  @Column
  private String username;

  @Column
  private String name;

  @Column
  private Short age;

  @Column
  private BigDecimal balance;

  public Long getId() {
    return this.id;
  }

  public void setId(Long id) {
    this.id = id;
  }

  public String getUsername() {
    return this.username;
  }

  public void setUsername(String username) {
    this.username = username;
  }

  public String getName() {
    return this.name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public Short getAge() {
    return this.age;
  }

  public void setAge(Short age) {
    this.age = age;
  }

  public BigDecimal getBalance() {
    return this.balance;
  }

  public void setBalance(BigDecimal balance) {
    this.balance = balance;
  }
}
2.7 添加Web层日志切面@Order(1)(springms-aop-weblogsrcmainjavacomspringmscloudcontrollerUserController.java)
package com.springms.cloud.aop;

import org.apache.log4j.Logger;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;

/****************************************************************************************
 实现AOP的切面主要有以下几个要素:

 使用@Aspect注解将一个java类定义为切面类
 使用@Pointcut定义一个切入点,可以是一个规则表达式,比如下例中某个package下的所有函数,也可以是一个注解等。
 根据需要在切入点不同位置的切入内容
 使用@Before在切入点开始处切入内容
 使用@After在切入点结尾处切入内容
 使用@AfterReturning在切入点return内容之后切入内容(可以用来对处理返回值做一些加工处理)
 使用@Around在切入点前后切入内容,并自己控制何时执行切入点自身的内容
 使用@AfterThrowing用来处理当切入内容部分抛出异常之后的处理逻辑
 使用@Order(i)注解来标识切面的优先级。i的值越小,优先级越高
 ****************************************************************************************/


/****************************************************************************************
 执行日志顺序:

 2017-10-19 20:22:35.810  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) URL : http://localhost:8350/simple/1
 2017-10-19 20:22:35.810  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) HTTP_METHOD : GET
 2017-10-19 20:22:35.810  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) IP : 127.0.0.1
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) CLASS_METHOD : com.springms.cloud.controller.SimpleProviderUserAopWebLogController.findById
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) ARGS : [1]
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) URL : http://localhost:8350/simple/1
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) HTTP_METHOD : GET
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) IP : 127.0.0.1
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) CLASS_METHOD : com.springms.cloud.controller.SimpleProviderUserAopWebLogController.findById
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) ARGS : [1]
 Hibernate: select user0_.id as id1_0_0_, user0_.age as age2_0_0_, user0_.balance as balance3_0_0_, user0_.name as name4_0_0_, user0_.username as username5_0_0_ from user user0_ where user0_.id=?
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doAfterReturning) RESPONSE : User@1249202
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doAfterReturning) SPEND TIME : 42
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doAfterReturning) RESPONSE : User@1249202
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doAfterReturning) SPEND TIME : 43

 总结:doBefore 方法先从优先级到低优先级依次执行完,然后 doAfterReturning 方法从低优先级到高优先级依次执行完;也就是进入从高到低,出来从低到高;
 ****************************************************************************************/


/**
 * Web层日志切面。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017/10/19
 *
 */
@Aspect
@Order(1)
@Component
public class WebLogHeadAspect {


    // private static final org.slf4j.Logger logger = LoggerFactory.getLogger(PreZuulFilter.class);

    private Logger logger = Logger.getLogger(getClass());

    ThreadLocal startTime = new ThreadLocal<>();

    private static final String PRE_TAG = "(Order(1))************** ";

    @Pointcut("execution(public * com.springms.cloud.controller..*.*(..))")
    public void webLog(){}

    @Before("webLog()")
    public void doBefore(JoinPoint joinPoint) throws Throwable {
        startTime.set(System.currentTimeMillis());

        // 接收到请求,记录请求内容
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();

        // 记录下请求内容
        logger.info(PRE_TAG + "(doBefore) URL : " + request.getRequestURL().toString());
        logger.info(PRE_TAG + "(doBefore) HTTP_METHOD : " + request.getMethod());
        logger.info(PRE_TAG + "(doBefore) IP : " + request.getRemoteAddr());
        logger.info(PRE_TAG + "(doBefore) CLASS_METHOD : " + joinPoint.getSignature().getDeclaringTypeName() + "." + joinPoint.getSignature().getName());
        logger.info(PRE_TAG + "(doBefore) ARGS : " + Arrays.toString(joinPoint.getArgs()));

    }

    @AfterReturning(returning = "ret", pointcut = "webLog()")
    public void doAfterReturning(Object ret) throws Throwable {
        // 处理完请求,返回内容
        logger.info(PRE_TAG + "(doAfterReturning) RESPONSE : " + ret);
        logger.info(PRE_TAG + "(doAfterReturning) SPEND TIME : " + (System.currentTimeMillis() - startTime.get()));
    }
}
2.8 添加Web层日志切面@Order(5)(springms-aop-weblogsrcmainjavacomspringmscloudcontrollerUserController.java)
package com.springms.cloud.aop;

import org.apache.log4j.Logger;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;

/****************************************************************************************
 实现AOP的切面主要有以下几个要素:

 使用@Aspect注解将一个java类定义为切面类
 使用@Pointcut定义一个切入点,可以是一个规则表达式,比如下例中某个package下的所有函数,也可以是一个注解等。
 根据需要在切入点不同位置的切入内容
 使用@Before在切入点开始处切入内容
 使用@After在切入点结尾处切入内容
 使用@AfterReturning在切入点return内容之后切入内容(可以用来对处理返回值做一些加工处理)
 使用@Around在切入点前后切入内容,并自己控制何时执行切入点自身的内容
 使用@AfterThrowing用来处理当切入内容部分抛出异常之后的处理逻辑
 使用@Order(i)注解来标识切面的优先级。i的值越小,优先级越高
 ****************************************************************************************/

/****************************************************************************************
 执行日志顺序:

 2017-10-19 20:22:35.810  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) URL : http://localhost:8350/simple/1
 2017-10-19 20:22:35.810  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) HTTP_METHOD : GET
 2017-10-19 20:22:35.810  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) IP : 127.0.0.1
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) CLASS_METHOD : com.springms.cloud.controller.SimpleProviderUserAopWebLogController.findById
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) ARGS : [1]
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) URL : http://localhost:8350/simple/1
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) HTTP_METHOD : GET
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) IP : 127.0.0.1
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) CLASS_METHOD : com.springms.cloud.controller.SimpleProviderUserAopWebLogController.findById
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) ARGS : [1]
 Hibernate: select user0_.id as id1_0_0_, user0_.age as age2_0_0_, user0_.balance as balance3_0_0_, user0_.name as name4_0_0_, user0_.username as username5_0_0_ from user user0_ where user0_.id=?
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doAfterReturning) RESPONSE : User@1249202
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doAfterReturning) SPEND TIME : 42
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doAfterReturning) RESPONSE : User@1249202
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doAfterReturning) SPEND TIME : 43

 总结:doBefore 方法先从优先级到低优先级依次执行完,然后 doAfterReturning 方法从低优先级到高优先级依次执行完;也就是进入从高到低,出来从低到高;
 ****************************************************************************************/


/**
 * Web层日志切面。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017/10/19
 *
 */
@Aspect
@Order(5)
@Component
public class WebLogFiveAspect {


    // private static final org.slf4j.Logger logger = LoggerFactory.getLogger(PreZuulFilter.class);

    private Logger logger = Logger.getLogger(getClass());

    ThreadLocal startTime = new ThreadLocal<>();

    private static final String PRE_TAG = "(Order(5))============== ";

    @Pointcut("execution(public * com.springms.cloud.controller..*.*(..))")
    public void webLog(){}

    @Before("webLog()")
    public void doBefore(JoinPoint joinPoint) throws Throwable {
        startTime.set(System.currentTimeMillis());

        // 接收到请求,记录请求内容
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();

        // 记录下请求内容
        logger.info(PRE_TAG + "(doBefore) URL : " + request.getRequestURL().toString());
        logger.info(PRE_TAG + "(doBefore) HTTP_METHOD : " + request.getMethod());
        logger.info(PRE_TAG + "(doBefore) IP : " + request.getRemoteAddr());
        logger.info(PRE_TAG + "(doBefore) CLASS_METHOD : " + joinPoint.getSignature().getDeclaringTypeName() + "." + joinPoint.getSignature().getName());
        logger.info(PRE_TAG + "(doBefore) ARGS : " + Arrays.toString(joinPoint.getArgs()));

    }

    @AfterReturning(returning = "ret", pointcut = "webLog()")
    public void doAfterReturning(Object ret) throws Throwable {
        // 处理完请求,返回内容
        logger.info(PRE_TAG + "(doAfterReturning) RESPONSE : " + ret);
        logger.info(PRE_TAG + "(doAfterReturning) SPEND TIME : " + (System.currentTimeMillis() - startTime.get()));
    }
}
2.9 添加用户Web访问层Controller(springms-aop-weblogsrcmainjavacomspringmscloudcontrollerUserController.java)
package com.springms.cloud.controller;

import com.springms.cloud.entity.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

import com.springms.cloud.repository.UserRepository;

/**
 * 用户微服务Controller。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017/10/19
 *
 */
@RestController
public class AopWebLogController {

    @Autowired
    private UserRepository userRepository;

    @GetMapping("/simple/{id}")
    public User findById(@PathVariable Long id) {
        return this.userRepository.findOne(id);
    }
}
2.10 添加微服务启动类(springms-aop-weblogsrcmainjavacomspringmscloudMsAopWebLogApplication.java)
package com.springms.cloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * 使用AOP统一处理Web请求日志。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017/10/19
 *
 */
@SpringBootApplication
public class MsAopWebLogApplication {

    public static void main(String[] args) {
        SpringApplication.run(MsAopWebLogApplication.class, args);
        System.out.println("【【【【【【 AopWebLog微服务 】】】】】】已启动.");
    }
}
三、测试
/****************************************************************************************
 一、简单用户微服务类(实现AOP的切面打印日志):

 1、启动 springms-aop-weblog 模块服务,启动1个端口;
 2、在浏览器输入地址 http://localhost:8350/simple/1 可以看到日志信息成功的被打印出来到控制台上。;

 执行日志顺序:

 2017-10-19 20:22:35.810  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) URL : http://localhost:8350/simple/1
 2017-10-19 20:22:35.810  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) HTTP_METHOD : GET
 2017-10-19 20:22:35.810  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) IP : 127.0.0.1
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) CLASS_METHOD : com.springms.cloud.controller.SimpleProviderUserAopWebLogController.findById
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doBefore) ARGS : [1]
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) URL : http://localhost:8350/simple/1
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) HTTP_METHOD : GET
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) IP : 127.0.0.1
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) CLASS_METHOD : com.springms.cloud.controller.SimpleProviderUserAopWebLogController.findById
 2017-10-19 20:22:35.811  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doBefore) ARGS : [1]
 Hibernate: select user0_.id as id1_0_0_, user0_.age as age2_0_0_, user0_.balance as balance3_0_0_, user0_.name as name4_0_0_, user0_.username as username5_0_0_ from user user0_ where user0_.id=?
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doAfterReturning) RESPONSE : User@1249202
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] com.springms.cloud.aop.WebLogFiveAspect        : (Order(5))============== (doAfterReturning) SPEND TIME : 42
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doAfterReturning) RESPONSE : User@1249202
 2017-10-19 20:22:35.853  INFO 9014 --- [nio-8350-exec-1] WebLogHeadAspect    : (Order(1))************** (doAfterReturning) SPEND TIME : 43

 总结:doBefore 方法先从优先级到低优先级依次执行完,然后 doAfterReturning 方法从低优先级到高优先级依次执行完;也就是进入从高到低,出来从低到高;
 ****************************************************************************************/
四、下载地址

https://gitee.com/ylimhhmily/SpringCloudTutorial.git

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