对新接触springmvc的朋友来讲,看过这票文章,我想会有一个不错的提高,另外,我在这里用了log4j2来打印日志,想了解的log4j2的可参考:http://blog.csdn.net/zouxucong/article/details/56013053html
项目jar下载位置:http://download.csdn.net/detail/zouxucong/9784188前端
这里我用了log4j2,若是想用log4j2的朋友,在引用jar包、配置无误后,却仍是没法使用,能够换一下tomcat的版本,用7.0.68,下载地址:http://download.csdn.net/detail/zouxucong/9769178java
工程的大体结构如图:web
第一步:建立Dynamic Web Project项目,在lib文件下导入jar包,并Build Path正则表达式
第二步:配置web.xml文件,里面的配置主要有三部分spring
1)配置log4j2的引用数据库
2)配置前端控制器以及中文乱码解决apache
代码以下:web.xml浏览器
<?xml version="1.0" encoding="UTF-8"?> <web-app 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" id="WebApp_ID" version="3.0"> <display-name>RequestMappingTest</display-name> <context-param> <param-name>log4jConfiguration</param-name> <param-value>classpath:log4j2.xml</param-value> </context-param> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/springmvc-config.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <!-- servlet映射声明 --> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <filter> <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> </web-app>第三步:log4j2.xml以及springmvc的配置文件springmvc-config.xml
这里为了练习,个人log4j2.xml直接放在src下:spring-mvc
<?xml version="1.0" encoding="UTF-8"?> <configuration status="debug"> <Properties> <Property name="LOG_HOME">${sys:catalina.base}/var/logs</Property> <Property name="APP_LOG_HOME">${LOG_HOME}/requestMappingTest</Property> </Properties> <Appenders> <Console name="Console" target="SYSTEM_OUT"> <!-- 控制台只输出level及以上级别的信息(onMatch),其余的直接拒绝(onMismatch) --> <!-- <ThresholdFilter level="debug" onMatch="ACCEPT" onMismatch="DENY" /> --> <!-- 输出日志的格式 --> <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n" /> </Console> <RollingFile name="requestMappingTest_appender" immediateFlush="true" fileName="${APP_LOG_HOME}/requestMappingTest.log" filePattern="${APP_LOG_HOME}/requestMappingTest.log.%d{yyyy-MM-dd}.gz"> <!-- %d{yyyy-MM-dd HH:mm:ss, SSS} : 日志生产时间 %p : 日志输出格式 %c : logger的名称 %m : 日志内容,即 logger.info("message") %n : 换行符 %C : Java类名 %L : 日志输出所在行数 %M : 日志输出所在方法名 hostName : 本地机器名 hostAddress : 本地ip地址 --> <PatternLayout> <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level %class{36} %L %M -- %msg%xEx%n</pattern> </PatternLayout> <Policies> <TimeBasedTriggeringPolicy interval="1" modulate="true" /> </Policies> <!-- 最多备份30天之内的日志,此处为策略限制,Delete中能够按本身须要用正则表达式编写 --> <!-- DefaultRolloverStrategy字段中加入max=“30”经测试是配合SizeBasedTriggeringPolicy限制%i的存在数量,并无发现是网上流传的是最多保存多少个文件的限制,也或许是我写的有问题 --> <DefaultRolloverStrategy> <Delete basePath="${APP_LOG_HOME}" maxDepth="1"> <IfFileName glob="requestMappingTest.log.*.gz" /> <IfLastModified age="1d" /> </Delete> </DefaultRolloverStrategy> </RollingFile> </Appenders> <Loggers> <logger name="org.spring" level="debug" additivity="false"> <AppenderRef ref="Console" /> <AppenderRef ref="requestMappingTest_appender" /> </logger> <logger name="org.springframework" level="debug" additivity="false"> <AppenderRef ref="Console" /> <AppenderRef ref="requestMappingTest_appender" /> </logger> <!-- <logger name="org.apache.zookeeper" level="info" additivity="false"> <AppenderRef ref="Console" /> <AppenderRef ref="requestMappingTest_appender" /> </logger> <logger name="com.alibaba.dubbo" level="info" additivity="false"> <AppenderRef ref="Console" /> <AppenderRef ref="requestMappingTest_appender" /> </logger> --> <logger name="org.fkit" level="info" additivity="false"> <AppenderRef ref="Console" /> <appender-ref ref="requestMappingTest_appender" /> </logger> <root level="debug" includeLocation="true"> <appender-ref ref="Console" /> <appender-ref ref="requestMappingTest_appender" /> </root> </Loggers> </configuration>springmvc-config.xml:
<?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:p="http://www.springframework.org/schema/p" xmlns:mvc="www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd"> <context:component-scan base-package="org.fkit.controller"/> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix"> <value>/WEB-INF/context/</value> </property> <property name="suffix"> <value>.jsp</value> </property> </bean> </beans>第四步:jsp页面,路径:/WEB-INF/context/
loginForm.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>登陆页面</title> </head> <body> <h3>登陆页面</h3> <br> <form action="login" method="post"> <table> <tr> <td><label>登陆名:</label></td> <td><input type="text" id="loginname" name="loginname"></td> </tr> <tr> <td><label>密码:</label></td> <td><input type="password" id="password" name="password"></td> </tr> <tr> <td><input id="submit" type="submit" value="登陆"></td> </tr> </table> </form> </body> </html>registerForm.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>注册页面</title> </head> <body> <h3>注册页面</h3> <br> <form action="register" method="post"> <table> <tr> <td><label>登陆名:</label></td> <td><input type="text" id="loginname" name="loginname"></td> </tr> <tr> <td><label>密码:</label></td> <td><input type="password" id="password" name="password"></td> </tr> <tr> <td><label>真实姓名:</label></td> <td><input type="text" id="username" name="username"></td> </tr> <tr> <td><input id="submit" type="submit" value="注册"></td> </tr> </table> </form> </body> </html>welcome.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>登录成功页面</title> </head> <body> <h3>欢迎${requestScope.user.username }登陆</h3> <br> </body> </html>第四步:实体类以及controller类
User.java:
package org.fkit.domain; public class User { private String loginname; private String password; private String username; public String getLoginname() { return loginname; } public void setLoginname(String loginname) { this.loginname = loginname; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } }UserController.java:
package org.fkit.controller; import java.util.ArrayList; import java.util.List; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; import org.fkit.domain.User; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; @Controller @RequestMapping(value="user") public class UserController { //静态List<User>集合,此处代替数据库用来保存注册的用户信息 private static List<User> userList; //UserController类的构造器,初始化List<User>集合 public UserController(){ super(); userList = new ArrayList<User>(); } //静态日之类loggerMaggent private static final Logger logger = LogManager.getLogger(UserController.class.getName()); @RequestMapping(value="/register",method=RequestMethod.GET) public String registerForm(){ logger.info("register GET 方法被调用……"); return "registerForm"; } @RequestMapping(value="/register",method=RequestMethod.POST) public String register(@RequestParam("loginname")String loginname, @RequestParam("password")String password, @RequestParam("username")String username){ logger.info("register POST 方法被调用……"); //建立user对象 User user = new User(); user.setLoginname(loginname); user.setPassword(password); user.setUsername(username); //模拟数据库存储User信息 userList.add(user); return "loginForm"; } //登陆 @RequestMapping("/login") public String login(@RequestParam("loginname")String loginname, @RequestParam("password")String password,Model model){ logger.info("登陆名:"+loginname+" 密码:"+password); //到集合中查找用户是否存在,此处用来模拟数据库验证 for(User user:userList){ if(user.getLoginname().equals(loginname) && user.getPassword().equals(password)){ model.addAttribute("user", user); return "welcome"; } } return "loginForm"; } }部署RequestMappingTest这个Web应用,在浏览器输入以下URL来测试应用:
http://localhost:8080/RequestMappingTest/user/register
可看到如图所示界面,这里我用的虚拟路径request:
到这里,用springmvc实现简单登录的过程就算实现了,但愿能够帮到您,感受有帮助的,麻烦点个赞,谢谢!