SpringMVC4整合Log4j
本节，将分享如何在一个SpringMVC web应用中整合log4j记录系统日志。
更多精彩请阅读 东陆之滇的csdn博客：http://blog.csdn.net/zixiao217
准备工作（根据自己的要求调整）
- Log4j 1.2.17
- Spring 4.2.5.RELEASE
- Maven 3
- Tomcat 9
- Eclipse neon版本
注意
默认情况下，Spring(Spring-core)使用JCL（commons-logging）记录日志，JCL在运行时可以发现其他classpath下的日志框架
集成log4j，你需要：
- 将log4j.jar添加到classpath中
- 在classpath下创建一个
log4j.properties或log4j.xml文件，如果使用maven风格的结构，放置在src/main/resources目录下
1. 工程目录
2. 项目依赖
完整的pom.xml
<projectxmlns="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>org.byron4j</groupId><artifactId>spring-mvc-log4j</artifactId><version>1.0.0-SNAPSHOT</version><packaging>war</packaging><name>spring-mvc-log4j</name><url>http://blog.csdn.net/zixiao217</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><spring.version>4.2.5.RELEASE</spring.version><log4j.version>1.2.17</log4j.version></properties><dependencies><!-- Spring --><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version></dependency><!-- Log4j --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>${log4j.version}</version></dependency><!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api --><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.5.1</version><configuration><source>1.8</source><target>1.8</target></configuration></plugin></plugins></build></project>3. log4j.properties
log4j.rootLogger=info, stdout, file
log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n log4j.appender.file=org.apache.log4j.RollingFileAppender log4j.appender.file.File=E:\\eclipse-log\spring-mvc-log4j.log log4j.appender.file.MaxFileSize=5MB log4j.appender.file.MaxBackupIndex=10 log4j.appender.file.layout=org.apache.log4j.PatternLayout log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss.S} %-5p %c{1}:%L - %m%n4. web.xml
<web-appxmlns="http://java.sun.com/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"version="2.5"><display-name>Gradle + Spring MVC Hello World + XML</display-name><description>Spring MVC web application</description><welcome-file-list><welcome-file> /index.jsp</welcome-file></welcome-file-list><!-- For web context --><servlet><servlet-name>hello-dispatcher</servlet-name><servlet-class> org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/spring-mvc-config.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>hello-dispatcher</servlet-name><url-pattern>/</url-pattern></servlet-mapping><!-- For root context --><listener><listener-class> org.springframework.web.context.ContextLoaderListener</listener-class></listener><context-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/spring-mvc-config.xml</param-value></context-param></web-app>5. SpringMVC配置文件
spring-mvc-config.xml:
<beansxmlns="http://www.springframework.org/schema/beans"xmlns:context="http://www.springframework.org/schema/context"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:mvc="http://www.springframework.org/schema/mvc"xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd "><context:component-scanbase-package="org.byron4j" /><beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"><propertyname="viewClass"value="org.springframework.web.servlet.view.JstlView"/><propertyname="prefix"value="/WEB-INF/views/jsp/" /><propertyname="suffix"value=".jsp" /></bean><mvc:resourcesmapping="/resources/**"location="/resources/" /><mvc:annotation-driven /></beans>6. 编写SpringMVC Controller + logging
WelcomeController.java类:
package org.byron4j.spring_mvc_log4j;import org.apache.log4j.Logger;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.bind.annotation.RestController;/** * Hello world! * */@RestControllerpublicclassWelcomeController {privatestatic Logger logger = Logger.getLogger(WelcomeController.class);@RequestMapping("/welcome")@ResponseBodypublic StringgetAppName(){ logger.info("访问首页");return"<h1>SpringMVC integrate log4j - a demo</h1>"; } }7. 运行SpringMVC web应用
在浏览器访问http://localhost:8080/spring-mvc-log4j/welcome，界面：
控制台输出:2016-10-27 00:33:07 INFO WelcomeController:20 - 访问首页
在指定的目录E:\eclipse-log下生成了日志文件spring-mvc-log4j.log，打开看到内容：
2016-10-2700:44:50.489 INFO ContextLoader:305 - Root WebApplicationContext: initialization started2016-10-2700:44:50.676 INFO XmlWebApplicationContext:578 - Refreshing Root WebApplicationContext: startupdate [Thu Oct2700:44:50 CST2016]; rootof context hierarchy2016-10-2700:44:50.771 INFO XmlBeanDefinitionReader:317 - Loading XML bean definitionsfrom ServletContext resource [/WEB-INF/spring-mvc-config.xml]2016-10-2700:44:51.660 INFO SimpleUrlHandlerMapping:341 - Mapped URL path [/resources/**] onto handler'org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0'2016-10-2700:44:51.758 INFO RequestMappingHandlerMapping:534 - Mapped"{[/welcome]}" ontopublic java.lang.String org.byron4j.spring_mvc_log4j.WelcomeController.getAppName()2016-10-2700:44:51.856 INFO RequestMappingHandlerAdapter:532 - Lookingfor @ControllerAdvice: Root WebApplicationContext: startupdate [Thu Oct2700:44:50 CST2016]; rootof context hierarchy2016-10-2700:44:51.932 INFO RequestMappingHandlerAdapter:532 - Lookingfor @ControllerAdvice: Root WebApplicationContext: startupdate [Thu Oct2700:44:50 CST2016]; rootof context hierarchy2016-10-2700:44:52.29 INFO ContextLoader:345 - Root WebApplicationContext: initialization completedin1536 ms2016-10-2700:44:52.53 INFO DispatcherServlet:488 - FrameworkServlet'hello-dispatcher': initialization started2016-10-2700:44:52.57 INFO XmlWebApplicationContext:578 - Refreshing WebApplicationContextfornamespace'hello-dispatcher-servlet': startup date [Thu Oct 27 00:44:52 CST 2016]; parent: Root WebApplicationContext2016-10-2700:44:52.58 INFO XmlBeanDefinitionReader:317 - Loading XML bean definitionsfrom ServletContext resource [/WEB-INF/spring-mvc-config.xml]2016-10-2700:44:52.128 INFO SimpleUrlHandlerMapping:341 - Mapped URL path [/resources/**] onto handler'org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0'2016-10-2700:44:52.139 INFO RequestMappingHandlerMapping:534 - Mapped"{[/welcome]}" ontopublic java.lang.String org.byron4j.spring_mvc_log4j.WelcomeController.getAppName()2016-10-2700:44:52.156 INFO RequestMappingHandlerAdapter:532 - Lookingfor @ControllerAdvice: WebApplicationContextfornamespace'hello-dispatcher-servlet': startup date [Thu Oct 27 00:44:52 CST 2016]; parent: Root WebApplicationContext2016-10-2700:44:52.166 INFO RequestMappingHandlerAdapter:532 - Lookingfor @ControllerAdvice: WebApplicationContextfornamespace'hello-dispatcher-servlet': startup date [Thu Oct 27 00:44:52 CST 2016]; parent: Root WebApplicationContext2016-10-2700:44:52.239 INFO DispatcherServlet:507 - FrameworkServlet'hello-dispatcher': initialization completed in 185 ms2016-10-2700:44:58.298 INFO WelcomeController:20 - 访问首页结束了。这里又搭了一遍SpringMVC配置哦。。。
转载于:https://www.cnblogs.com/xiaolei2017/p/9297184.html
本节，将分享如何在一个SpringMVC web应用中整合log4j记录系统日志。
更多精彩请阅读 东陆之滇的csdn博客：http://blog.csdn.net/zixiao217
准备工作（根据自己的要求调整）
- Log4j 1.2.17
- Spring 4.2.5.RELEASE
- Maven 3
- Tomcat 9
- Eclipse neon版本
注意
默认情况下，Spring(Spring-core)使用JCL（commons-logging）记录日志，JCL在运行时可以发现其他classpath下的日志框架
集成log4j，你需要：
- 将log4j.jar添加到classpath中
- 在classpath下创建一个
log4j.properties或log4j.xml文件，如果使用maven风格的结构，放置在src/main/resources目录下
1. 工程目录
2. 项目依赖
完整的pom.xml
<projectxmlns="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>org.byron4j</groupId><artifactId>spring-mvc-log4j</artifactId><version>1.0.0-SNAPSHOT</version><packaging>war</packaging><name>spring-mvc-log4j</name><url>http://blog.csdn.net/zixiao217</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><spring.version>4.2.5.RELEASE</spring.version><log4j.version>1.2.17</log4j.version></properties><dependencies><!-- Spring --><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${spring.version}</version></dependency><!-- Log4j --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>${log4j.version}</version></dependency><!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api --><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.5.1</version><configuration><source>1.8</source><target>1.8</target></configuration></plugin></plugins></build></project>3. log4j.properties
log4j.rootLogger=info, stdout, file
log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n log4j.appender.file=org.apache.log4j.RollingFileAppender log4j.appender.file.File=E:\\eclipse-log\spring-mvc-log4j.log log4j.appender.file.MaxFileSize=5MB log4j.appender.file.MaxBackupIndex=10 log4j.appender.file.layout=org.apache.log4j.PatternLayout log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss.S} %-5p %c{1}:%L - %m%n4. web.xml
<web-appxmlns="http://java.sun.com/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"version="2.5"><display-name>Gradle + Spring MVC Hello World + XML</display-name><description>Spring MVC web application</description><welcome-file-list><welcome-file> /index.jsp</welcome-file></welcome-file-list><!-- For web context --><servlet><servlet-name>hello-dispatcher</servlet-name><servlet-class> org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/spring-mvc-config.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>hello-dispatcher</servlet-name><url-pattern>/</url-pattern></servlet-mapping><!-- For root context --><listener><listener-class> org.springframework.web.context.ContextLoaderListener</listener-class></listener><context-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/spring-mvc-config.xml</param-value></context-param></web-app>5. SpringMVC配置文件
spring-mvc-config.xml:
<beansxmlns="http://www.springframework.org/schema/beans"xmlns:context="http://www.springframework.org/schema/context"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:mvc="http://www.springframework.org/schema/mvc"xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd "><context:component-scanbase-package="org.byron4j" /><beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"><propertyname="viewClass"value="org.springframework.web.servlet.view.JstlView"/><propertyname="prefix"value="/WEB-INF/views/jsp/" /><propertyname="suffix"value=".jsp" /></bean><mvc:resourcesmapping="/resources/**"location="/resources/" /><mvc:annotation-driven /></beans>6. 编写SpringMVC Controller + logging
WelcomeController.java类:
package org.byron4j.spring_mvc_log4j;import org.apache.log4j.Logger;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.bind.annotation.RestController;/** * Hello world! * */@RestControllerpublicclassWelcomeController {privatestatic Logger logger = Logger.getLogger(WelcomeController.class);@RequestMapping("/welcome")@ResponseBodypublic StringgetAppName(){ logger.info("访问首页");return"<h1>SpringMVC integrate log4j - a demo</h1>"; } }7. 运行SpringMVC web应用
在浏览器访问http://localhost:8080/spring-mvc-log4j/welcome，界面：
控制台输出:2016-10-27 00:33:07 INFO WelcomeController:20 - 访问首页
在指定的目录E:\eclipse-log下生成了日志文件spring-mvc-log4j.log，打开看到内容：
2016-10-2700:44:50.489 INFO ContextLoader:305 - Root WebApplicationContext: initialization started2016-10-2700:44:50.676 INFO XmlWebApplicationContext:578 - Refreshing Root WebApplicationContext: startupdate [Thu Oct2700:44:50 CST2016]; rootof context hierarchy2016-10-2700:44:50.771 INFO XmlBeanDefinitionReader:317 - Loading XML bean definitionsfrom ServletContext resource [/WEB-INF/spring-mvc-config.xml]2016-10-2700:44:51.660 INFO SimpleUrlHandlerMapping:341 - Mapped URL path [/resources/**] onto handler'org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0'2016-10-2700:44:51.758 INFO RequestMappingHandlerMapping:534 - Mapped"{[/welcome]}" ontopublic java.lang.String org.byron4j.spring_mvc_log4j.WelcomeController.getAppName()2016-10-2700:44:51.856 INFO RequestMappingHandlerAdapter:532 - Lookingfor @ControllerAdvice: Root WebApplicationContext: startupdate [Thu Oct2700:44:50 CST2016]; rootof context hierarchy2016-10-2700:44:51.932 INFO RequestMappingHandlerAdapter:532 - Lookingfor @ControllerAdvice: Root WebApplicationContext: startupdate [Thu Oct2700:44:50 CST2016]; rootof context hierarchy2016-10-2700:44:52.29 INFO ContextLoader:345 - Root WebApplicationContext: initialization completedin1536 ms2016-10-2700:44:52.53 INFO DispatcherServlet:488 - FrameworkServlet'hello-dispatcher': initialization started2016-10-2700:44:52.57 INFO XmlWebApplicationContext:578 - Refreshing WebApplicationContextfornamespace'hello-dispatcher-servlet': startup date [Thu Oct 27 00:44:52 CST 2016]; parent: Root WebApplicationContext2016-10-2700:44:52.58 INFO XmlBeanDefinitionReader:317 - Loading XML bean definitionsfrom ServletContext resource [/WEB-INF/spring-mvc-config.xml]2016-10-2700:44:52.128 INFO SimpleUrlHandlerMapping:341 - Mapped URL path [/resources/**] onto handler'org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0'2016-10-2700:44:52.139 INFO RequestMappingHandlerMapping:534 - Mapped"{[/welcome]}" ontopublic java.lang.String org.byron4j.spring_mvc_log4j.WelcomeController.getAppName()2016-10-2700:44:52.156 INFO RequestMappingHandlerAdapter:532 - Lookingfor @ControllerAdvice: WebApplicationContextfornamespace'hello-dispatcher-servlet': startup date [Thu Oct 27 00:44:52 CST 2016]; parent: Root WebApplicationContext2016-10-2700:44:52.166 INFO RequestMappingHandlerAdapter:532 - Lookingfor @ControllerAdvice: WebApplicationContextfornamespace'hello-dispatcher-servlet': startup date [Thu Oct 27 00:44:52 CST 2016]; parent: Root WebApplicationContext2016-10-2700:44:52.239 INFO DispatcherServlet:507 - FrameworkServlet'hello-dispatcher': initialization completed in 185 ms2016-10-2700:44:58.298 INFO WelcomeController:20 - 访问首页结束了。这里又搭了一遍SpringMVC配置哦。。。