SpringMVC HashMap Form Integration example

File:/WebContent/WEB-INF/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>Spring3MVC-Hashmap</display-name>

    <servlet>

        <servlet-name>spring</servlet-name>

        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <load-on-startup>1</load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>spring</servlet-name>

        <url-pattern>*.html</url-pattern>

    </servlet-mapping>

</web-app>

File: /WebContent/WEB-INF/spring-servlet.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: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.xsd

        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd

        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

         

    <context:annotation-config />

    <context:component-scan base-package="net.viralpatel.spring3.controller" />  

 

    <bean id="jspViewResolver"

        class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="viewClass"

            value="org.springframework.web.servlet.view.JstlView" />

        <property name="prefix" value="/WEB-INF/jsp/" />

        <property name="suffix" value=".jsp" />

    </bean>

</beans>

File: /src/net/viralpatel/spring3/form/ContactForm.java

package net.viralpatel.spring3.form;

 

import java.util.HashMap;

import java.util.Map;

 

public class ContactForm {

 

    private Map<String, String> contactMap = new HashMap<String, String>();

 

    public Map<String, String> getContactMap() {

        return contactMap;

    }

 

    public void setContactMap(Map<String, String> contactMap) {

        this.contactMap = contactMap;

    }

 

}

File: /src/net/viralpatel/spring3/controller/ContactController.java

package net.viralpatel.spring3.controller;

 

import java.util.HashMap;

import java.util.Map;

 

import net.viralpatel.spring3.form.ContactForm;

 

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.ModelAttribute;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.servlet.ModelAndView;

 

@Controller

public class ContactController {

 

    private static Map<String, String> contactMap = new HashMap<String, String>();

    static {

        contactMap.put("name", "John");

        contactMap.put("lastname", "Lennon");

        contactMap.put("genres", "Rock, Pop");

    }

     

    @RequestMapping(value = "/show", method = RequestMethod.GET)

    public ModelAndView get() {

         

        ContactForm contactForm = new ContactForm();

        contactForm.setContactMap(contactMap);

         

        return new ModelAndView("add_contact" , "contactForm", contactForm);

    }

     

    @RequestMapping(value = "/add", method = RequestMethod.POST)

    public ModelAndView save(@ModelAttribute("contactForm") ContactForm contactForm) {

         

        return new ModelAndView("show_contact", "contactForm", contactForm);

    }

}

File: /WebContent/WEB-INF/jsp/add_contact.jsp

<%@taglib uri="http://www.springframework.org/tags" prefix="spring"%>

<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>

<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<html>

<head>

    <title>Spring 3 MVC HashMap Form - viralpatel.net</title>

</head>

<body>

 

<h2>Spring 3 MVC HashMap Form</h2>

<form:form method="post" action="add.html" modelAttribute="contactForm">

    <table>

    <tr>

        <th>Key</th>

        <th>Value</th>

    </tr>

    <c:forEach items="${contactForm.contactMap}" var="contactMap" varStatus="status">

        <tr>

            <td>${contactMap.key}</td>

            <td><input name="contactMap['${contactMap.key}']" value="${contactMap.value}"/></td>

        </tr>

    </c:forEach>

</table> 

<br/>

 

<input type="submit" value="Save" />

     

</form:form>

</body>

</html>

File: /WebContent/WEB-INF/jsp/show_contact.jsp

<%@taglib uri="http://www.springframework.org/tags" prefix="spring"%>

<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>

<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<html>

<head>

<title>Spring 3 MVC HashMap Form - viralpatel.net</title>

</head>

<body>

    <h2>Show Contact</h2>

    <table>

        <tr>

            <th>Key</th>

            <th>Value</th>

        </tr>

        <c:forEach items="${contactForm.contactMap}" var="contactMap"

            varStatus="status">

            <tr>

                <td>${contactMap.key}</td>

                <td>${contactMap.value}</td>

            </tr>

        </c:forEach>

    </table>

    <br />

    <input type="button" value="Back" onclick="javascript:history.back()" />

</body>

</html>

File: /WebContent/index.jsp

<jsp:forward page="show.html"></jsp:forward>

程序運行ok！