以下示例显示如何使用Spring Web MVC框架在表单中使用RadioButton.首先，让我们使用一个有效的Eclipse IDE，并坚持以下步骤，使用Spring Web Framework开发基于动态表单的Web应用程序 :
| Step | 描述 |
|---|---|
| 1 | 在com.it1352包下创建一个名为HelloWeb的项目，如下所述Spring MVC - Hello World章. |
| 2 | 在com.it1352包下创建Java类User，UserController. |
| 3 | 在jsp子文件夹下创建视图文件user.jsp，users.jsp. |
| 4 | 最后一步是创建源文件和配置文件的内容并导出应用程序，如下所述. |
package com.it1352;
public class User {
private String username;
private String password;
private String address;
private boolean receivePaper;
private String [] favoriteFrameworks;
private String gender;
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;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public boolean isReceivePaper() {
return receivePaper;
}
public void setReceivePaper(boolean receivePaper) {
this.receivePaper = receivePaper;
}
public String[] getFavoriteFrameworks() {
return favoriteFrameworks;
}
public void setFavoriteFrameworks(String[] favoriteFrameworks) {
this.favoriteFrameworks = favoriteFrameworks;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
}package com.it1352;
import java.util.ArrayList;
import java.util.List;
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;
import org.springframework.ui.ModelMap;
@Controller
public class UserController {
@RequestMapping(value = "/user", method = RequestMethod.GET)
public ModelAndView user() {
User user = new User();
user.setFavoriteFrameworks((new String []{"Spring MVC","Struts 2"}));
user.setGender("M");
ModelAndView modelAndView = new ModelAndView("user", "command", user);
return modelAndView;
}
@RequestMapping(value = "/addUser", method = RequestMethod.POST)
public String addUser(@ModelAttribute("SpringWeb")User user,
ModelMap model) {
model.addAttribute("username", user.getUsername());
model.addAttribute("password", user.getPassword());
model.addAttribute("address", user.getAddress());
model.addAttribute("receivePaper", user.isReceivePaper());
model.addAttribute("favoriteFrameworks", user.getFavoriteFrameworks());
model.addAttribute("gender", user.getGender());
return "users";
}
@ModelAttribute("webFrameworkList")
public List<String> getWebFrameworkList()
{
List<String> webFrameworkList = new ArrayList<String>();
webFrameworkList.add("Spring MVC");
webFrameworkList.add("Struts 1");
webFrameworkList.add("Struts 2");
webFrameworkList.add("Apache Wicket");
return webFrameworkList;
}
}这里，第一个服务方法 user()，我们已经过了一个空白名为"command"的ModelAndView对象中的用户对象，因为弹簧框架需要名为"command"的对象，如果您使用的是< form:form> JSP文件中的标记.因此，当调用 user()方法时，它会返回 user.jsp 视图.
第二种服务方法将对 HelloWeb/addUser URL上的POST方法调用addUser().您将根据提交的信息准备模型对象.最后，将从service方法返回"users"视图，这将导致呈现users.jsp.
<%@taglib uri = "http://www.springframework.org/tags/form" prefix = "form"%>
<html>
<head>
<title>Spring MVC Form Handling</title>
</head>
<body>
<h2>User Information</h2>
<form:form method = "POST" action = "/HelloWeb/addUser">
<table>
<tr>
<td><form:label path = "username">User Name</form:label></td>
<td><form:input path = "username" /></td>
</tr>
<tr>
<td><form:label path = "password">Age</form:label></td>
<td><form:password path = "password" /></td>
</tr>
<tr>
<td><form:label path = "address">Address</form:label></td>
<td><form:textarea path = "address" rows = "5" cols = "30" /></td>
</tr>
<tr>
<td><form:label path = "receivePaper">Subscribe Newsletter</form:label></td>
<td><form:checkbox path = "receivePaper" /></td>
</tr>
<tr>
<td><form:label path = "favoriteFrameworks">Favorite Web Frameworks</form:label></td>
<td><form:checkboxes items = "${webFrameworkList}" path = "favoriteFrameworks" /></td>
</tr>
<tr>
<td><form:label path = "gender">Gender</form:label></td>
<td>
<form:radiobutton path = "gender" value = "M" label = "Male" />
<form:radiobutton path = "gender" value = "F" label = "Female" />
</td>
</tr>
<tr>
<td colspan = "2">
<input type = "submit" value = "Submit"/>
</td>
</tr>
</table>
</form:form>
</body>
</html>在这里，我们使用< form:radiobutton/> 标记来呈现HTML单选按钮.
<form:radiobutton path = "gender" value = "M" label = "Male" /> <form:radiobutton path = "gender" value = "F" label = "Female" />
它将呈现以下HTML内容.
<input id = "gender1" name = "gender" type = "radio" value = "M" checked = "checked"/><label for = "gender1">Male</label> <input id = "gender2" name = "gender" type = "radio" value = "F"/><label for = "gender2">Female</label>
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
<title>Spring MVC Form Handling</title>
</head>
<body>
<h2>Submitted User Information</h2>
<table>
<tr>
<td>Username</td>
<td>${username}</td>
</tr>
<tr>
<td>Password</td>
<td>${password}</td>
</tr>
<tr>
<td>Address</td>
<td>${address}</td>
</tr>
<tr>
<td>Subscribed to Newsletter</td>
<td>${receivePaper}</td>
</tr>
<tr>
<td>Favorite Web Frameworks</td>
<td> <% String[] favoriteFrameworks = (String[])request.getAttribute("favoriteFrameworks");
for(String framework: favoriteFrameworks) {
out.println(framework);
}
%></td>
</tr>
<tr>
<td>Gender</td>
<td>${(gender=="M"? "Male" : "Female")}</td>
</tr>
</table>
</body>
</html>完成创建源文件和配置文件后，导出应用程序.右键单击您的应用程序，使用 Export → WAR文件选项并将 HelloWeb.war 文件保存在Tomcat的webapps文件夹中.
现在，启动Tomcat服务器并确保能够使用标准浏览器从webapps文件夹访问其他网页.尝试使用URL - http://localhost:8080/HelloWeb/user ，如果您的Spring Web应用程序一切正常，我们将看到以下屏幕.
提交所需信息后，单击"提交"按钮提交表单.如果Spring Web Application的一切正常，我们将看到以下屏幕.
