简介 由于进一步的学习以及便于自己更好的调试程序中遇到的错误,开始了将log4j整合到web项目中,项目是基于springmvc的,所以就做了一个springmvc和web项目的整合demo,本篇博客适用于对Maven有一定了解的朋友查看交流,对于初学者,首先我们先将springmvc框架搭建起来,然后再加入Log4j的整合 使用maven创建一个web工程 创建过程就不详细说了,创建完成后我的项目结构如下 这里写图片描述 resources下面的log4j.properties暂时可以不创建,是整合log4j需要考虑的 二、首先添加创建springmvc框架时项目依赖的jar包 在pom.xml下面添加 <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <spring.version>3.1.2.RELEASE</spring.version> </properties> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> </dependencies> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 三、创建springmvc-servlet.xml 在WEB-INF下面创建springmvc-servlet.xml添加配置如下 <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" 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" default-lazy-init="true"> <!--springmvc的注解驱动--> <mvc:annotation-driven /> <!--指定扫描 base-package下面的包--> <context:component-scan base-package="com.*"/> <!--配置springmvc的viewResolver解析器--> <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> </beans> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 四、在web.xml配置中添加如下配置 <?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <!-- class DispatcherServlet会自动扫描classpath下面的名字为<servlet-name>-servlet.xml的配置文件,在这里,因为我servlet-name配置 的是springmvc,所以扫描到的就是springmvc-servlet --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <!--配置springmvc拦截.do的请求,类似也可以是 / 表示拦截所有的--> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <!--中文处理过滤,如果不设计中文的处理下面这部分可以移除--> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 OK,到这里我们最基本的关于springMVC的配置部分就完成了,接下来创建类 五、创建model类 User.java package com.model; /** * Created by Nagrand-FatCat on 2015/12/23. */ public class User { private String username; private String password; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 六、创建controller类 Helloworld.java package com.controller; import com.model.User; import org.apache.log4j.Logger; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; /** * Created by Nagrand-FatCat on 2015/12/23. */ @Controller public class Helloworld { //private Logger logger=Logger.getLogger(this.getClass()); @RequestMapping("index.do") public String toIndex(){ return "index"; } /* @RequestMapping("welcome.do") public String welcome(Model model){ model.addAttribute("res","hello world"); return "welcome"; } */ @RequestMapping("login.do") public String login(User user, Model model){ System.out.println(user.getUsername()); //logger.info("用户:" + user.getUsername()); model.addAttribute("user",user); return "welcome"; } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 七、接下来创建页面 先创建index.jsp <%-- Created by IntelliJ IDEA. User: Administrator Date: 2015/12/23 Time: 14:34 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <% String path = request.getContextPath(); // 获得本项目的地址(例如: http://localhost:8080/MyApp/)赋值给basePath变量 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; // 将 "项目路径basePath" 放入pageContext中,待以后用EL表达式读出。 pageContext.setAttribute("basePath",basePath); %> <html> <head> <title>Title</title> </head> <body> <form action="login.do" method="post"> 用户名 :<input type="text" name="username" > 密码 :<input type="password" name="password"> <input type="submit" value="登陆"> </form> </body> </html> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 然后是welcome.jsp <%-- Created by IntelliJ IDEA. User: Administrator Date: 2015/12/23 Time: 14:34 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <% String path = request.getContextPath(); // 获得本项目的地址(例如: http://localhost:8080/MyApp/)赋值给basePath变量 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; // 将 "项目路径basePath" 放入pageContext中,待以后用EL表达式读出。 pageContext.setAttribute("basePath",basePath); %> <html> <head> <title>Title</title> </head> <body> <p>Welcome ,</p> <p> ${user.getUsername()} 用户</p> </body> </html> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 将项目部署到服务器上,完成创建,跑一下试试,springmvc框架就搭建完成了 八、接下来我们将log4j加入到项目里 在resources/prop 下创建log4j.properties文件 内容如下: ### set log levels ### log4j.rootLogger = debug,stdout,D,E 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 = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n log4j.appender.D = org.apache.log4j.DailyRollingFileAppender log4j.appender.D.File = E://logs/log.log log4j.appender.D.Append = true log4j.appender.D.Threshold = DEBUG log4j.appender.D.layout = org.apache.log4j.PatternLayout log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n log4j.appender.E = org.apache.log4j.DailyRollingFileAppender log4j.appender.E.File =E://logs/error.log log4j.appender.E.Append = true log4j.appender.E.Threshold = ERROR log4j.appender.E.layout = org.apache.log4j.PatternLayout log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 然后再web.xml中添加以下配置 <!--设置log4j的配置文件位置--> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>/WEB-INF/classes/prop/log4j.properties</param-value> </context-param> <!--使用监听加载log4j的配置文件--> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 最后将上面我在controller层下的Helloworld.java类中的 单行注释 都去掉,因为这部分是关于log4j的。然后就可以使用了,很简单吧 跑一下,控制台会输出日志文件的信息,E://logs/log下面也生成了日志文件,用日志记录程序运行的过程对我们调BUG有很多帮助呢
简介
由于进一步的学习以及便于自己更好的调试程序中遇到的错误,开始了将log4j整合到web项目中,项目是基于springmvc的,所以就做了一个springmvc和web项目的整合demo,本篇博客适用于对Maven有一定了解的朋友查看交流,对于初学者,首先我们先将springmvc框架搭建起来,然后再加入Log4j的整合
使用maven创建一个web工程
创建过程就不详细说了,创建完成后我的项目结构如下
resources下面的log4j.properties暂时可以不创建,是整合log4j需要考虑的
二、首先添加创建springmvc框架时项目依赖的jar包
在pom.xml下面添加
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>3.1.2.RELEASE</spring.version>
</properties>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
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三、创建springmvc-servlet.xml
在WEB-INF下面创建springmvc-servlet.xml添加配置如下
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
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"
default-lazy-init="true">
<!--springmvc的注解驱动-->
<mvc:annotation-driven />
<!--指定扫描 base-package下面的包-->
<context:component-scan base-package="com.*"/>
<!--配置springmvc的viewResolver解析器-->
<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
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四、在web.xml配置中添加如下配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<!-- class DispatcherServlet会自动扫描classpath下面的名字为<servlet-name>-servlet.xml的配置文件,在这里,因为我servlet-name配置
的是springmvc,所以扫描到的就是springmvc-servlet -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!--配置springmvc拦截.do的请求,类似也可以是 / 表示拦截所有的-->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!--中文处理过滤,如果不设计中文的处理下面这部分可以移除-->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
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OK,到这里我们最基本的关于springMVC的配置部分就完成了,接下来创建类
五、创建model类
User.java
package com.model;
/**
* Created by Nagrand-FatCat on 2015/12/23.
*/
public class User {
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
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六、创建controller类
Helloworld.java
package com.controller;
import com.model.User;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* Created by Nagrand-FatCat on 2015/12/23.
*/
@Controller
public class Helloworld {
//private Logger logger=Logger.getLogger(this.getClass());
@RequestMapping("index.do")
public String toIndex(){
return "index";
}
/*
@RequestMapping("welcome.do")
public String welcome(Model model){
model.addAttribute("res","hello world");
return "welcome";
}
*/
@RequestMapping("login.do")
public String login(User user, Model model){
System.out.println(user.getUsername());
//logger.info("用户:" + user.getUsername());
model.addAttribute("user",user);
return "welcome";
}
}
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七、接下来创建页面
先创建index.jsp
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2015/12/23
Time: 14:34
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
String path = request.getContextPath();
// 获得本项目的地址(例如: http://localhost:8080/MyApp/)赋值给basePath变量
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
// 将 "项目路径basePath" 放入pageContext中,待以后用EL表达式读出。
pageContext.setAttribute("basePath",basePath);
%>
<html>
<head>
<title>Title</title>
</head>
<body>
<form action="login.do" method="post">
用户名 :<input type="text" name="username" >
密码 :<input type="password" name="password">
<input type="submit" value="登陆">
</form>
</body>
</html>
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然后是welcome.jsp
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2015/12/23
Time: 14:34
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
String path = request.getContextPath();
// 获得本项目的地址(例如: http://localhost:8080/MyApp/)赋值给basePath变量
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
// 将 "项目路径basePath" 放入pageContext中,待以后用EL表达式读出。
pageContext.setAttribute("basePath",basePath);
%>
<html>
<head>
<title>Title</title>
</head>
<body>
<p>Welcome ,</p>
<p> ${user.getUsername()} 用户</p>
</body>
</html>
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将项目部署到服务器上,完成创建,跑一下试试,springmvc框架就搭建完成了
八、接下来我们将log4j加入到项目里
在resources/prop 下创建log4j.properties文件
内容如下:
### set log levels ###
log4j.rootLogger = debug,stdout,D,E
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 = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = E://logs/log.log
log4j.appender.D.Append = true
log4j.appender.D.Threshold = DEBUG
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
log4j.appender.E = org.apache.log4j.DailyRollingFileAppender
log4j.appender.E.File =E://logs/error.log
log4j.appender.E.Append = true
log4j.appender.E.Threshold = ERROR
log4j.appender.E.layout = org.apache.log4j.PatternLayout
log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
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然后再web.xml中添加以下配置
<!--设置log4j的配置文件位置-->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/classes/prop/log4j.properties</param-value>
</context-param>
<!--使用监听加载log4j的配置文件-->
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
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最后将上面我在controller层下的Helloworld.java类中的 单行注释 都去掉,因为这部分是关于log4j的。然后就可以使用了,很简单吧
跑一下,控制台会输出日志文件的信息,E://logs/log下面也生成了日志文件,用日志记录程序运行的过程对我们调BUG有很多帮助呢