Spring MVC试用
简述：
试用Spring MVC, 登录控制 Login Controller
步骤：
1. 需导入要三个包
2. 新建一个LoginController类
该类的作用： 管理Login.jsp的请求，这里是给Login.jsp做定向的操作 ， 最后return操作可以看到，他返回了LoginInfo.jsp
package smw.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;
public class LoginController extends AbstractController{
@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request,
HttpServletResponse response) throws Exception {
return new ModelAndView("LoginInfo.jsp");
}
}
3. 既然是用到了spring mvc 那么需要配置一下，spring的xml
applicationContext.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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd"> <!-- Configure the controller --> <bean name="/LoginController.do" class="smw.controller.LoginController"/> </beans>
4.之后是web.xml也需要配置
web.xml
<?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_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>StudentManagementWeb</display-name>
<welcome-file-list>
<welcome-file>Login.jsp</welcome-file>
</welcome-file-list>
<servlet>
<!-- define the name of Servlet -->
<servlet-name>dispatcherServlet</servlet-name>
<!-- Servlet implementation class -->
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- initialize the context -->
<init-param>
<param-name>contextConfigLocation</param-name>
<!-- load configuration -->
<param-value>/WEB-INF/applicationContext.xml</param-value>
</init-param>
<!-- set loading priority -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
其中比较重要是是spring的xml文件的加载，这样才能让服务器启动的时候找到spring，从而完成spring mvc的行为
5. Login.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=gb2312">
<title>Login Page</title>
</head>
<body>
<h1 align="center">System Login Page</h1>
<form method="post" action="LoginController.do" class="form">
<table width="280" border="0" align="center">
<tr>
<td width="87" align="center" valign="middle" >
<div align="right">user name:</div>
</td>
<td width="183"><label>
<input name="name" type="text" id="name" maxlength="10" /> </label>
<td>
</tr>
<tr>
<td height="37" align="center" valign="middle">
<div align="right">password: </div>
</td>
<td>
<label>
<input name="pwd" type="password" id="pwd" maxlength="20" />
</label>
</td>
</tr>
<tr>
<td align="center" valign="middle">
<input type="submit" name="Submit" value="submit" />
</td>
<td>
<input name="reset" type="reset" id="reset" value="reset" />
</td>
</tr>
</table>
</form>
</body>
</html>
5. LoginInfo.jsp
<%@ page language="java" contentType="text/html; charset=GBK"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Student Registration</title>
<style type="text/css">
.STYLE2 {font-size: 20pt}
</style>
</head>
<body>
<center>
<span class="STYLE2">Login info</span>
</center>
<br>
<table align="center" border="1">
<tr>
<td height="100"><span class="STYLE2">student name:</span></td>
<td height="100"><span class="STYLE2">${param.name }</span></td>
</tr>
<tr>
<td height="100"><span class="STYLE2">password:</span></td>
<td height="100"><span class="STYLE2">${param.pwd }</span></td>
</tr>
<tr>
<td height="100" colspan="2" align="center"><a href="Login.jsp" class="STYLE2">return to login</a></td>
</tr>
</table>
</body>
</html>
6. 整个项目包目录，
效果：
启动项目， 访问地址进入Login.jsp的页面
输入name 和 password提交之后，页面地址虽然是LoginController.do 但是 实际跑的页面时LoginInfo.jsp 原因在于LoginController类修改实际的跳转
