Spring MVC前台属性数据的传递和后台属性数据的接收

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一、配置spring mvc

1、在web.xml文件中添加如下配置：

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<servlet>
<servlet-name>MVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/mvc-config.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>MVC</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

2、mvc-config.xml文件配置

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<?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:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans  
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
http://www.springframework.org/schema/tx  
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd 
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context-3.0.xsd 
http://www.springframework.org/schema/mvc 
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<!-- 自动扫描的包名 -->
<context:component-scan base-package="cn.ecgonline.eis.controller."/> 
<!-- 默认的注解映射的支持 -->
<mvc:annotation-driven />
<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射
<beanclass="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/> -->
<!-- 视图解释类 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix"value="/WEB-INF/<a href="http://www.it165.net/pro/webjsp/" target="_blank" class="keylink">jsp</a>/" />
<property name="suffix"value=".<a href="http://www.it165.net/pro/webjsp/" target="_blank" class="keylink">jsp</a>" /><!--可为空,方便实现自已的依据扩展名来选择视图解释类的逻辑 -->
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView"/> 
</bean>
</beans>

二、新建控制器类，获取前台属性值

我用的是annotation方式

1、后台用普通数据类型获取单个属性

控制器类：

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packagecn.ecgonline.eis.controller.workstation; 
importorg.springframework.stereotype.Controller; 
importorg.springframework.web.bind.annotation.ModelAttribute; 
importorg.springframework.web.bind.annotation.RequestMapping; 
importorg.springframework.web.servlet.ModelAndView; 
/**
* 测试
* @author 陈文龙
* @date 2013-9-13 下午12:49:53
*/
@Controller
publicclass WrokstationController 
{
@RequestMapping("/new_workstation.do")
publicModelAndView newWorkStation(@RequestParamStringusername){ 
System.out.println(user.getUsername);
ModelAndView mv =new ModelAndView("Hello");
mv.addObject("test","hello spring mvc!"); 
returnmv; 
}
}

@RequestParam 注释表示单个属性

jsp页面代码：

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<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<metahttp-equiv="Content-Type"content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<formaction="<%=basePath%>/new_workstation.do" method="post"> 
<inputtype="text"name="username"><!--username对应后台控制器中的username-->
<inputtype="submit"value="测试">
</form>
</body>
</html>

二、后台用model类获取数据

Model类：

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packagetest; 
publicclass User 
{
privateString username; 
privateString pass<a href="http://www.it165.net/edu/ebg/"target="_blank" class="keylink">word</a>;
publicString getUsername() 
{
returnusername; 
}
publicvoid setUsername(String username)
{
this.username = username;
}
publicString getPass<a href="http://www.it165.net/edu/ebg/"target="_blank" class="keylink">word</a>()
{
returnpassword; 
}
publicvoid setPassword(String password)
{
this.password = password;
}
}

控制器类：

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packagecn.ecgonline.eis.controller.workstation; 
importjavax.annotation.Resource; 
importorg.springframework.stereotype.Controller; 
importorg.springframework.web.bind.annotation.ModelAttribute; 
importorg.springframework.web.bind.annotation.RequestMapping; 
importorg.springframework.web.servlet.ModelAndView; 
/**
* 测试
* @author 陈文龙
* @date 2013-9-13 下午12:49:53
*/
@Controller
publicclass WrokstationController 
{
@RequestMapping("/new_workstation.do")
publicModelAndView newWorkStation(@ModelAttributeUser user){ 
System.out.println(user.getUsername);
System.out.println(user.getPassword);
ModelAndView mv =new ModelAndView("Hello");
mv.addObject("test","hello spring mvc!"); 
returnmv; 
}
}

@ModelAttribute 注解代表用模型来接收值，User对象里面的属性要和jsp页面的属性想对应。

jsp页面代码：

01.<%@ page language="java" contentType="text/html; charset=utf-8"

02.pageEncoding="utf-8"%>

03.<%

04.String path = request.getContextPath();

05.String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

06.%>

07.<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

08.<html>

09.<head>

10.<metahttp-equiv="Content-Type"content="text/html; charset=utf-8">

11.<title>Insert title here</title>

12.</head>

13.<body>

14.<formaction="<%=basePath%>/new_workstation.do" method="post">

15.<table>

16.<tr>

17.<th>用户名：</th>

18.<td><inputtype="text"name="username"></td>

19.</tr>

20.<tr>

21.<th>密码</th>

22.<td><inputtype="text"name="password"></td>

23.</tr>

24.</table>

25.<inputtype="submit"value="测试">

26.</form>

27.</body>

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