以下内容翻译自：/springmvc/springmvc_radiobuttons.htm
说明：示例基于Spring MVC 4.1.6。
以下示例显示如何使用Spring Web MVC框架在窗体中使用RadioButtons。首先，让我们使用Eclipse IDE，并按照以下步骤使用Spring Web Framework开发基于动态窗体的Web应用程序：
User.java
package com.tutorialspoint;public class User {private String username;private String password;private String address;private boolean receivePaper;private String [] favoriteFrameworks; private String gender;private String favoriteNumber;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;}public String getFavoriteNumber() {return favoriteNumber;}public void setFavoriteNumber(String favoriteNumber) {this.favoriteNumber = favoriteNumber;}}
UserController.java
package com.tutorialspoint;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;@Controllerpublic 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());model.addAttribute("favoriteNumber", user.getFavoriteNumber());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;}@ModelAttribute("numbersList")public List<String> getNumbersList(){List<String> numbersList = new ArrayList<String>();numbersList.add("1");numbersList.add("2");numbersList.add("3");numbersList.add("4");return numbersList;}}
这里第一个服务方法user()，我们已经通过名为“command”的ModelAndView对象中传递了一个空的User对象，因为如果您在JSP中使用<form:form>标签，Spring框架将期望一个名为“command”的对象文件。所以当user()方法被调用时，它返回user.jsp视图。
将在HelloWeb/addUserURL上针对POST方法调用第二个服务方法addUser()。您将根据提交的信息准备您的模型对象。最后，将从服务方法返回“user”视图，这将导致渲染users.jsp
user.jsp
<%@taglib uri="/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="${webFrameworkList}" path="favoriteFrameworks" /></td> </tr><tr><td><form:label path="gender">Gender</form:label></td><td><form:radiobutton path="gender" value="M" label="Male" /><form:radiobutton path="gender" value="F" label="Female" /></td></tr><tr><td><form:label path="favoriteNumber">Favorite Number</form:label></td><td><form:radiobuttons path="favoriteNumber" items="${numbersList}" /> </td></tr> <tr><td colspan="2"><input type="submit" value="Submit"/></td></tr></table> </form:form></body></html>
这里我们使用<form:radiobuttons />标签来渲染HTML单选按钮。例如
<form:radiobuttons path="favoriteNumber" items="${numbersList}" />
它将呈现以下HTML内容。
<span><input id="favoriteNumber1" name="favoriteNumber" type="radio" value="1"/><label for="favoriteNumber1">1</label></span><span><input id="favoriteNumber2" name="favoriteNumber" type="radio" value="2"/><label for="favoriteNumber2">2</label></span><span><input id="favoriteNumber3" name="favoriteNumber" type="radio" value="3"/><label for="favoriteNumber3">3</label></span><span><input id="favoriteNumber4" name="favoriteNumber" type="radio" value="4"/><label for="favoriteNumber4">4</label></span>
users.jsp
<%@taglib uri="/tags/form" prefix="form"%><html><head><title>Spring MVC Form Handling</title></head><body><h2>Submitted User Information</h2><table><tr><td>Username</td><td>${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><tr><td>Favourite Number</td><td>${favoriteNumber}</td></tr> </table> </body></html>
完成创建源和配置文件后，导出应用程序。右键单击应用程序并使用Export->WAR File选项，并将您的HelloWeb.war文件保存在Tomcat的webapps文件夹中。
现在启动您的Tomcat服务器，并确保您可以使用标准浏览器从webapps文件夹访问其他网页。现在尝试URLhttp://localhost:8080/HelloWeb/user，如果您的Spring Web应用程序的一切都很好，您应该会看到以下结果：
提交所需信息后，点击提交按钮提交表单。如果您的Spring Web应用程序的一切都很好，您应该会看到以下结果：
Maven示例：
/easonjim/5_java_example/tree/master/springmvc/tutorialspoint/test10
==>如有问题，请联系我：easonjim#，或者下方发表评论。<==
