将页面的数据封装到表单中
register.jsp
<%@ page language="java" import="java.util.*" 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">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP ‘register.jsp‘ starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="/app/servlet/requestDemo3" method="post">
姓名：<input type="text" name="username"><br>
密码：<input type="password" name="password"><br>
确认密码：<input type="password" name="password"><br>
性别：<input type="radio" name="gander" value="男" >男
<input type="radio" name="gander" value="女">女<br>
爱好：<input type="checkbox" name="loves" value="打篮球">打篮球
<input type="checkbox" name="loves" value="踢足球">踢足球
<input type="checkbox" name="loves" value="抱孩子">抱孩子<br>
国籍：<select name="country">
<option value="中国">中国</option>
<option value="美国">美国</option>
<option value="加拿大">加拿大</option>
<option value="日本">日本</option>
<option value="韩国">韩国</option>
<option value="俄罗斯">俄罗斯</option><br>
</select>
备注:<textarea rows="5" cols="20" name="description">大家一起去请两天假</textarea><br>
<input type="submit" value="提交"><br>
</form>
</body>
</html>
User.java
package bean;
import java.io.Serializable;
import java.util.Arrays;
/**
* javabean
* @author kj
*
*/
public class User implements Serializable{
private String username;
private String[] password;
private String gander;
private String[] loves;
private String country;
private String description;
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 getGander() {
return gander;
}
public void setGander(String gander) {
this.gander = gander;
}
public String[] getLoves() {
return loves;
}
public void setLoves(String[] loves) {
this.loves = loves;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
@Override
public String toString() {
return "User [username=" + username + ", password="
+ Arrays.toString(password) + ", gander=" + gander + ", loves="
+ Arrays.toString(loves) + ", country=" + country
+ ", description=" + description + "]";
}
}
requestDeom3.java (Servlet类)
public class requestDemo3 extends HttpServlet {
/**
* 演示封装表单中的数据
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
User user = new User();
//将表单数据封装到user对象中
try {
BeanUtils.populate(user, request.getParameterMap());
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("-----封装后-----" + user);
}
时间： 2024-11-07 11:36:22