spring mvc sample

最新推荐文章于 2022-02-21 11:26:32 发布

ouyangxiaokang6

最新推荐文章于 2022-02-21 11:26:32 发布

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文章标签： spring mvc string class bean servlet

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本文介绍了一个使用 Spring MVC 实现的简单用户登录示例，包括开发环境配置、项目结构说明及关键代码片段。

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使用spring的mvc，实现用户的登陆和显示。只是个简单得例子，仅供想学习springmvc得程序员入门之用。

1.开发环境：eclipse 3.2 + jdk1.5+tomcat5.5+spring2.0

2.使用的jar包：

jar包

3. 开发过程

（1）新建一个web工程，目录结构如下：

目录结构

（2）用户信息保持的javabean(User.java)的代码：

package user; import java.io.Serializable; public class User implements Serializable{ /** * */ private static final long serialVersionUID = 7993415270415996191L; 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; } }

（3）index.jsp的代码：

<%@ page language="java" contentType="text/html; charset=windows-31j" pageEncoding="windows-31j"%> <%@ page session="false"%> <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core"%> <%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt"%> <!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=windows-31j"> <title>Insert title here</title> </head> <body> <c:redirect url="/hello.do" /> </body> </html>

（4）web.xml的代码：

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"> <web-app>  <servlet> <servlet-name>springapp</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet>  <servlet-mapping> <servlet-name>springapp</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping>  <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <taglib> <taglib-uri>/spring</taglib-uri> <taglib-location>/WEB-INF/tlds/spring.tld</taglib-location> </taglib> </web-app>

（5）springapp-servlet.xml的代码：

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd"> <beans>  <bean id="springappController" class="web.SpringappController"> </bean>  <bean id="springappDisController" class="web.SpringappDisController"> <property name="sessionForm"><value>true</value></property> <property name="commandName"><value>userInf</value></property> <property name="commandClass"><value>user.User</value></property> <property name="formView"><value>hello</value></property> <property name="successView"><value>display.do</value></property> </bean> <bean id="user" class="user.User"> </bean> <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <props> <prop key="/hello.do">springappController</prop> <prop key="/display.do">springappDisController</prop> </props> </property> </bean> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass"> <value>org.springframework.web.servlet.view.JstlView</value> </property> <property name="prefix"><value>/WEB-INF/pages/</value></property> <property name="suffix"><value>.jsp</value></property> </bean> </beans>

（6）hello.jsp的代码：

（7）display.jsp代码：

<%@ page language="java" contentType="text/html; charset=windows-31j" pageEncoding="windows-31j"%> <%@ page session="false"%> <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core"%> <%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt"%> <%@ taglib prefix="spring" uri="/spring"%> <!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=windows-31j"> <title>Insert title here</title> </head> <body> <table> <tr> <td> <c:out value="${model.userName}" /> </td> </tr> </table> </body> </html>

(8)跳转的两个controller的代码：

SpringappController.java

package web; import org.springframework.web.servlet.mvc.Controller; import org.springframework.web.servlet.ModelAndView; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.util.Map; import java.util.HashMap; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class SpringappController implements Controller { /** Logger for this class and subclasses */ protected final Log logger = LogFactory.getLog(getClass()); public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String now = (new java.util.Date()).toString(); logger.info("returning hello view with " + now); Map <String, String>myModel = new HashMap<String, String>(); myModel.put("now", now); return new ModelAndView("hello", "model", myModel); } }

SpringappDisController.java的代码：

/** * */ package web; import java.util.HashMap; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.SimpleFormController; import org.springframework.web.servlet.view.RedirectView; import user.User; /** * @author liusk * */ public class SpringappDisController extends SimpleFormController { public ModelAndView onSubmit(Object command) throws ServletException { String userName = ((User)command).getUserName(); System.out.println(userName); Map <String, String>myModel = new HashMap<String, String>(); myModel.put("userName", userName); return new ModelAndView("display", "model", myModel); } }