SpringCloud(第 048 篇)使用AOP統(tǒng)一處理Web請求日志
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一、大致介紹1、AOP是Spring框架中的一個重要內容,它通過對既有程序定義一個切入點,然后在其前后切入不同的執(zhí)行內容,比如常見的有:打開數(shù)據(jù)庫連接/關閉數(shù)據(jù)庫連接、打開事務/關閉事務、記錄日志等; 2、基于AOP不會破壞原來程序邏輯,因此它可以很好的對業(yè)務邏輯的各個部分進行隔離,從而使得業(yè)務邏輯各部分之間的耦合度降低,提高程序的可重用性,同時提高了開發(fā)的效率。二、實現(xiàn)步驟 2.1 添加 maven 引用包
2.2 添加應用配置文件(springms-aop-weblogsrcmainresourcesapplication.yml)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
server: port: 8350 spring: application: name: springms-aop-weblog #全部小寫 jpa: generate-ddl: false show-sql: true hibernate: ddl-auto: none datasource: platform: h2 schema: classpath:schema.sql data: classpath:data.sql2.3 添加 H2 數(shù)據(jù)庫腳本(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 數(shù)據(jù)庫一些初始化數(shù)據(jù)(springms-aop-weblogsrcmainresourcesdata.sql)
INSERT into user (id, username, name, age, balance) values (1, "user1", "張三", 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", "趙六", 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", "張遠", 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", "關羽", 30, 100.00);2.5 添加訪問底層數(shù)據(jù)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 JpaRepository2.6 添加實體用戶類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層日志切面@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; /**************************************************************************************** 實現(xiàn)AOP的切面主要有以下幾個要素: 使用@Aspect注解將一個java類定義為切面類 使用@Pointcut定義一個切入點,可以是一個規(guī)則表達式,比如下例中某個package下的所有函數(shù),也可以是一個注解等。 根據(jù)需要在切入點不同位置的切入內容 使用@Before在切入點開始處切入內容 使用@After在切入點結尾處切入內容 使用@AfterReturning在切入點return內容之后切入內容(可以用來對處理返回值做一些加工處理) 使用@Around在切入點前后切入內容,并自己控制何時執(zhí)行切入點自身的內容 使用@AfterThrowing用來處理當切入內容部分拋出異常之后的處理邏輯 使用@Order(i)注解來標識切面的優(yōu)先級。i的值越小,優(yōu)先級越高 ****************************************************************************************/ /**************************************************************************************** 執(zhí)行日志順序: 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 總結:doBefore 方法先從優(yōu)先級到低優(yōu)先級依次執(zhí)行完,然后 doAfterReturning 方法從低優(yōu)先級到高優(yōu)先級依次執(zhí)行完;也就是進入從高到低,出來從低到高; ****************************************************************************************/ /** * Web層日志切面。 * * @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()); ThreadLocal2.8 添加Web層日志切面@Order(5)(springms-aop-weblogsrcmainjavacomspringmscloudcontrollerUserController.java)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()); // 接收到請求,記錄請求內容 ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes(); HttpServletRequest request = attributes.getRequest(); // 記錄下請求內容 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 { // 處理完請求,返回內容 logger.info(PRE_TAG + "(doAfterReturning) RESPONSE : " + ret); logger.info(PRE_TAG + "(doAfterReturning) SPEND TIME : " + (System.currentTimeMillis() - startTime.get())); } }
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; /**************************************************************************************** 實現(xiàn)AOP的切面主要有以下幾個要素: 使用@Aspect注解將一個java類定義為切面類 使用@Pointcut定義一個切入點,可以是一個規(guī)則表達式,比如下例中某個package下的所有函數(shù),也可以是一個注解等。 根據(jù)需要在切入點不同位置的切入內容 使用@Before在切入點開始處切入內容 使用@After在切入點結尾處切入內容 使用@AfterReturning在切入點return內容之后切入內容(可以用來對處理返回值做一些加工處理) 使用@Around在切入點前后切入內容,并自己控制何時執(zhí)行切入點自身的內容 使用@AfterThrowing用來處理當切入內容部分拋出異常之后的處理邏輯 使用@Order(i)注解來標識切面的優(yōu)先級。i的值越小,優(yōu)先級越高 ****************************************************************************************/ /**************************************************************************************** 執(zhí)行日志順序: 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 總結:doBefore 方法先從優(yōu)先級到低優(yōu)先級依次執(zhí)行完,然后 doAfterReturning 方法從低優(yōu)先級到高優(yōu)先級依次執(zhí)行完;也就是進入從高到低,出來從低到高; ****************************************************************************************/ /** * Web層日志切面。 * * @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()); ThreadLocal2.9 添加用戶Web訪問層Controller(springms-aop-weblogsrcmainjavacomspringmscloudcontrollerUserController.java)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()); // 接收到請求,記錄請求內容 ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes(); HttpServletRequest request = attributes.getRequest(); // 記錄下請求內容 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 { // 處理完請求,返回內容 logger.info(PRE_TAG + "(doAfterReturning) RESPONSE : " + ret); logger.info(PRE_TAG + "(doAfterReturning) SPEND TIME : " + (System.currentTimeMillis() - startTime.get())); } }
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; /** * 用戶微服務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 添加微服務啟動類(springms-aop-weblogsrcmainjavacomspringmscloudMsAopWebLogApplication.java)
package com.springms.cloud; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * 使用AOP統(tǒng)一處理Web請求日志。 * * @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微服務 】】】】】】已啟動."); } }三、測試
/**************************************************************************************** 一、簡單用戶微服務類(實現(xiàn)AOP的切面打印日志): 1、啟動 springms-aop-weblog 模塊服務,啟動1個端口; 2、在瀏覽器輸入地址 http://localhost:8350/simple/1 可以看到日志信息成功的被打印出來到控制臺上。; 執(zhí)行日志順序: 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 總結:doBefore 方法先從優(yōu)先級到低優(yōu)先級依次執(zhí)行完,然后 doAfterReturning 方法從低優(yōu)先級到高優(yōu)先級依次執(zhí)行完;也就是進入從高到低,出來從低到高; ****************************************************************************************/四、下載地址
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