• 记录整合sprinmvc+log4j的的过程


    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>
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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

    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>
    
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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

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  • 原文地址:https://www.cnblogs.com/ruiati/p/5997306.html
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