SpringMVC
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文章目录
Spring MVC下拉选项(Select)
- 创建一个名称为 Dropdown 的动态WEB项目。
- 在 com.yiibai.springmvc 包下创建两个Java类User，UserController
- 在jsp子文件夹下创建两个视图文件：user.jsp，userlist.jsp
**User.java **
package com.yiibai.springmvc;
public class User {
private String username;
private String password;
private String address;
private boolean receivePaper;
private String [] favoriteFrameworks;
private String gender;
private String favoriteNumber;
private String country;
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;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
}
UserController.java
package com.yiibai.springmvc;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
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());
model.addAttribute("favoriteNumber", user.getFavoriteNumber());
model.addAttribute("country", user.getCountry());
return "userlist";
}
@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;
}
@ModelAttribute("countryList")
public Map<String, String> getCountryList()
{
Map<String, String> countryList = new HashMap<String, String>();
countryList.put("US", "United States");
countryList.put("CH", "China");
countryList.put("SG", "Singapore");
countryList.put("MY", "Malaysia");
return countryList;
}
}
- 第一个服务方法user()在ModelAndView对象中传递了一个名称为“command”的空User对象，因为如果在JSP文件中使用form:form标签，spring框架需要一个名称为“command”的对象。 所以当调用user()方法时，它返回user.jsp视图。
- 第二个服务方法addUser()将根据URL => Dropdown/addUser 上的POST方法请求时调用。根据提交的信息准备模型对象。 最后从服务方法返回“userlist”视图，这将呈现userlist.jsp视图
user.jsp
<%@ page contentType="text/html; charset=UTF-8"%>
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
<title>Spring MVC表单处理(下拉选择)</title>
</head>
<body>
<h2>用户信息</h2>
<form:form method="POST" action="/Dropdown/addUser">
<table>
<tr>
<td><form:label path="username">用户名：</form:label></td>
<td><form:input path="username" /></td>
</tr>
<tr>
<td><form:label path="password">密码：</form:label></td>
<td><form:password path="password" /></td>
</tr>
<tr>
<td><form:label path="address">地址：</form:label></td>
<td><form:textarea path="address" rows="5" cols="30" /></td>
</tr>
<tr>
<td><form:label path="receivePaper">是否订阅：</form:label></td>
<td><form:checkbox path="receivePaper" /></td>
</tr>
<tr>
<td><form:label path="favoriteFrameworks">喜欢的框架/技术：</form:label></td>
<td><form:checkboxes items="${webFrameworkList}"
path="favoriteFrameworks" /></td>
</tr>
<tr>
<td><form:label path="gender">性别：</form:label></td>
<td><form:radiobutton path="gender" value="M" label="男" /> <form:radiobutton
path="gender" value="F" label="女" /></td>
</tr>
<tr>
<td><form:label path="favoriteNumber">喜欢的数字：</form:label></td>
<td><form:radiobuttons path="favoriteNumber"
items="${numbersList}" /></td>
</tr>
<tr>
<td><form:label path="country">所在国家：</form:label></td>
<td><form:select path="country">
<form:option value="NONE" label="请选择..." />
<form:options items="${countryList}" />
</form:select></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="提交" /></td>
</tr>
</table>
</form:form>
</body>
</html>
userlist.jsp
<%@ page contentType="text/html; charset=UTF-8"%>
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
<title>Spring MVC表单处理(下拉选择)</title>
</head>
<body>
<h2>提交用户信息 -</h2>
<table>
<tr>
<td>用户名：</td>
<td>${username}</td>
</tr>
<tr>
<td>密码：</td>
<td>${password}</td>
</tr>
<tr>
<td>地址：</td>
<td>${address}</td>
</tr>
<tr>
<td>是否订阅：</td>
<td>${receivePaper}</td>
</tr>
<tr>
<td>喜欢的技术/框架：</td>
<td>
<%
String[] favoriteFrameworks = (String[]) request.getAttribute("favoriteFrameworks");
for (String framework : favoriteFrameworks) {
out.println(framework);
}
%>
</td>
</tr>
<tr>
<td>性别：</td>
<td>${(gender=="M"? "男" : "女")}</td>
</tr>
<tr>
<td>喜欢的数字：</td>
<td>${favoriteNumber}</td>
</tr>
<tr>
<td>国家：</td>
<td>${country}</td>
</tr>
</table>
</body>
</html>
Spring MVC列表多选框
- 创建一个名称为 Listbox 的动态WEB项目。
- 在 com.yiibai.springmvc 包下创建两个Java类User，UserController
- 在jsp子文件夹下创建两个视图文件：user.jsp，userlist.jsp
User.java
package com.yiibai.springmvc;
public class User {
private String username;
private String password;
private String address;
private boolean receivePaper;
private String [] favoriteFrameworks;
private String gender;
private String favoriteNumber;
private String country;
private String [] skills;
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;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public String[] getSkills() {
return skills;
}
public void setSkills(String[] skills) {
this.skills = skills;
}
}
**UserController.java **
package com.yiibai.springmvc;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
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;
}
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