SpringMVC4整合Log4j

 

SpringMVC4整合Log4j

2016年10月27日 00:47:28

阅读数：9867

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

<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>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%n

4. web.xml

<web-app xmlns="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:

<beans xmlns="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-scan base-package="org.byron4j" /> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="prefix" value="/WEB-INF/views/jsp/" /> <property name="suffix" value=".jsp" /> </bean> <mvc:resources mapping="/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! * */ @RestController public class WelcomeController { private static Logger logger = Logger.getLogger(WelcomeController.class); @RequestMapping("/welcome") @ResponseBody public String getAppName(){ 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：

2016-10-27 00:44:50.489 INFO ContextLoader:305 - Root WebApplicationContext: initialization started 2016-10-27 00:44:50.676 INFO XmlWebApplicationContext:578 - Refreshing Root WebApplicationContext: startup date [Thu Oct 27 00:44:50 CST 2016]; root of context hierarchy 2016-10-27 00:44:50.771 INFO XmlBeanDefinitionReader:317 - Loading XML bean definitions from ServletContext resource [/WEB-INF/spring-mvc-config.xml] 2016-10-27 00:44:51.660 INFO SimpleUrlHandlerMapping:341 - Mapped URL path [/resources/**] onto handler 'org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0' 2016-10-27 00:44:51.758 INFO RequestMappingHandlerMapping:534 - Mapped "{[/welcome]}" onto public java.lang.String org.byron4j.spring_mvc_log4j.WelcomeController.getAppName() 2016-10-27 00:44:51.856 INFO RequestMappingHandlerAdapter:532 - Looking for @ControllerAdvice: Root WebApplicationContext: startup date [Thu Oct 27 00:44:50 CST 2016]; root of context hierarchy 2016-10-27 00:44:51.932 INFO RequestMappingHandlerAdapter:532 - Looking for @ControllerAdvice: Root WebApplicationContext: startup date [Thu Oct 27 00:44:50 CST 2016]; root of context hierarchy 2016-10-27 00:44:52.29 INFO ContextLoader:345 - Root WebApplicationContext: initialization completed in 1536 ms 2016-10-27 00:44:52.53 INFO DispatcherServlet:488 - FrameworkServlet 'hello-dispatcher': initialization started 2016-10-27 00:44:52.57 INFO XmlWebApplicationContext:578 - Refreshing WebApplicationContext for namespace 'hello-dispatcher-servlet': startup date [Thu Oct 27 00:44:52 CST 2016]; parent: Root WebApplicationContext 2016-10-27 00:44:52.58 INFO XmlBeanDefinitionReader:317 - Loading XML bean definitions from ServletContext resource [/WEB-INF/spring-mvc-config.xml] 2016-10-27 00:44:52.128 INFO SimpleUrlHandlerMapping:341 - Mapped URL path [/resources/**] onto handler 'org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0' 2016-10-27 00:44:52.139 INFO RequestMappingHandlerMapping:534 - Mapped "{[/welcome]}" onto public java.lang.String org.byron4j.spring_mvc_log4j.WelcomeController.getAppName() 2016-10-27 00:44:52.156 INFO RequestMappingHandlerAdapter:532 - Looking for @ControllerAdvice: WebApplicationContext for namespace 'hello-dispatcher-servlet': startup date [Thu Oct 27 00:44:52 CST 2016]; parent: Root WebApplicationContext 2016-10-27 00:44:52.166 INFO RequestMappingHandlerAdapter:532 - Looking for @ControllerAdvice: WebApplicationContext for namespace 'hello-dispatcher-servlet': startup date [Thu Oct 27 00:44:52 CST 2016]; parent: Root WebApplicationContext 2016-10-27 00:44:52.239 INFO DispatcherServlet:507 - FrameworkServlet 'hello-dispatcher': initialization completed in 185 ms 2016-10-27 00:44:58.298 INFO WelcomeController:20 - 访问首页

结束了。这里又搭了一遍SpringMVC配置哦。。。