Servlet获取表单数据

一用户实体类

package entity;

import java.util.Date;

//用户实体类

public class Users {

private String username ; //用户名

private String mypassword ; //密码

private String email ; //电子邮箱

private String gender ; //性别

private Date birthday ; //出生日期

private String[] favorites ; //爱好

private String introduce ; //自我介绍

private boolean flag ; //是否接受协议

public Users()

{

}

public String getUsername() {

return username ;

}

public void setUsername(String username) {

this . username = username;

}

public String getMypassword() {

return mypassword ;

}

public void setMypassword(String mypassword) {

this . mypassword = mypassword;

}

public String getEmail() {

return email ;

}

public void setEmail(String email) {

this . email = email;

}

public String getGender() {

return gender ;

}

public void setGender(String gender) {

this . gender = gender;

}

public Date getBirthday() {

return birthday ;

}

public void setBirthday(Date birthday) {

this . birthday = birthday;

}

public String[] getFavorites() {

return favorites ;

}

public void setFavorites(String[] favorites) {

this . favorites = favorites;

}

public String getIntroduce() {

return introduce ;

}

public void setIntroduce(String introduce) {

this . introduce = introduce;

}

public boolean isFlag() {

return flag ;

}

public void setFlag( boolean flag) {

this . flag = flag;

}

二 Servlet类

package servlet;

import java.io.IOException;

import java.io.PrintWriter;

import java.text.SimpleDateFormat;

import java.util.Date;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import entity.Users;

public class RegServlet extends HttpServlet {

/**

* Constructor of the object.

public RegServlet() {

super();

}

/**

* Destruction of the servlet. <br>

public void destroy() {

super.destroy(); // Just puts "destroy" string in log

// Put your code here

}

/**

* 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 {

doPost(request,response);

}

/**

* The doPost method of the servlet. <br>

* This method is called when a form has its tag value method equals to post.

* @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 doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

request.setCharacterEncoding("utf-8");

Users u = new Users();

String username,mypassword,gender,email,introduce,isAccept;

Date birthday;

String[] favorites;

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

try

{

username = request.getParameter("username");

mypassword = request.getParameter("mypassword");

gender = request.getParameter("gender");

email = request.getParameter("email");

introduce = request.getParameter("introduce");

birthday = sdf.parse(request.getParameter("birthday"));

if(request.getParameterValues("isAccpet")!=null)

{

isAccept = request.getParameter("isAccept");

}

else

{

isAccept = "false";

}

//用来获取多个复选按钮的值

favorites = request.getParameterValues("favorite");

u.setUsername(username);

u.setMypassword(mypassword);

u.setGender(gender);

u.setEmail(email);

u.setFavorites(favorites);

u.setIntroduce(introduce);

if(isAccept.equals("true"))

{

u.setFlag(true);

}

else

{

u.setFlag(false);

}

u.setBirthday(birthday);

//把注册成功的用户对象保存在session中

request.getSession().setAttribute("regUser", u);

//跳转到注册成功页面

request.getRequestDispatcher("../userinfo.jsp").forward(request,response);

}

catch(Exception ex)

{

ex.printStackTrace();

}

/**

* Initialization of the servlet. <br>

* @throws ServletException if an error occurs

public void init() throws ServletException {

// Put your code here

}

三 reg.jsp

<%@ page language = "java" import = "java.util.*" contentType = "text/html; charset=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 'reg.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" >

<!--

-->

< style type = "text/css" >

.label {

width : 20%

}

.controler {

width : 80%

}

</ style >

< script type = "text/javascript" src = "js/Calendar3.js" ></ script >

</ head >

< body >

< h1 > 用户注册 </ h1 >

< hr >

< form name = "regForm" action = "servlet/RegServlet" method = "post" >

< table border = "0" width = "800" cellspacing = "0" cellpadding = "0" >

< tr >

< td class = "lalel" > 用户名： </ td >

< td class = "controler" >< input type = "text" name = "username" /></ td >

</ tr >

< tr >

< td class = "label" > 密码： </ td >

< td class = "controler" >< input type = "password" name = "mypassword" ></ td >

</ tr >

< tr >

< td class = "label" > 确认密码： </ td >

< td class = "controler" >< input type = "password" name = "confirmpass" ></ td >

</ tr >

< tr >

< td class = "label" > 电子邮箱： </ td >

< td class = "controler" >< input type = "text" name = "email" ></ td >

</ tr >

< tr >

< td class = "label" > 性别： </ td >

< td class = "controler" >< input type = "radio" name = "gender" checked = "checked" value = "Male" > 男 < input type = "radio" name = "gender" value = "Female" > 女 </ td >

</ tr >

< tr >

< td class = "label" > 出生日期： </ td >

< td class = "controler" >

< input name = "birthday" type = "text" id = "control_date" size = "10"

maxlength = "10" onclick = "new Calendar().show(this);" readonly = "readonly" />

</ td >

</ tr >

< tr >

< td class = "label" > 爱好： </ td >

< td class = "controler" >

< input type = "checkbox" name = "favorite" value = "nba" > NBA  

< input type = "checkbox" name = "favorite" value = "music" > 音乐  

< input type = "checkbox" name = "favorite" value = "movie" > 电影  

< input type = "checkbox" name = "favorite" value = "internet" > 上网  

</ td >

</ tr >

< tr >

< td class = "label" > 自我介绍： </ td >

< td class = "controler" >

< textarea name = "introduce" rows = "10" cols = "40" ></ textarea >

</ td >

</ tr >

< tr >

< td class = "label" > 接受协议： </ td >

< td class = "controler" >

< input type = "checkbox" name = "isAccept" value = "true" > 是否接受霸王条款

</ td >

</ tr >

< tr >

< td colspan = "2" align = "center" >

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

< input type = "reset" value = "取消" />   

</ td >

</ tr >

</ table >

</ form >

</ body >

</ html >

四 userinfo.jsp

<%@ page language = "java" import = "java.util.*,java.text.*" contentType = "text/html; charset=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 'userinfo.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" >

<!--

-->

< style type = "text/css" >

.title {

width : 30% ;

background-color : #CCC ;

font-weight : bold ;

}

.content {

width : 70% ;

background-color : #CBCFE5 ;

}

</ style >

</ head >

< body >

< h1 > 用户信息 </ h1 >

< hr >

< center >

< jsp:useBean id = "regUser" class = "entity.Users" scope = "session" />

< table width = "600" cellpadding = "0" cellspacing = "0" border = "1" >

< tr >

< td class = "title" > 用户名： </ td >

< td class = "content" >   < jsp:getProperty name = "regUser" property = "username" /></ td >

</ tr >

< tr >

< td class = "title" > 密码： </ td >

< td class = "content" >   < jsp:getProperty name = "regUser" property = "mypassword" /></ td >

</ tr >

< tr >

< td class = "title" > 性别： </ td >

< td class = "content" >   < jsp:getProperty name = "regUser" property = "gender" /></ td >

</ tr >

< tr >

< td class = "title" > E-mail： </ td >

< td class = "content" >   < jsp:getProperty name = "regUser" property = "email" /></ td >

</ tr >

< tr >

< td class = "title" > 出生日期： </ td >

< td class = "content" >  

SimpleDateFormat sdf = new SimpleDateFormat( "yyyy年MM月dd日" );

String date = sdf.format(regUser.getBirthday());

<%= date %>

</ td >

</ tr >

< tr >

< td class = "title" > 爱好： </ td >

< td class = "content" >  

String[] favorites = regUser.getFavorites();

for (String f:favorites)

{

<%= f %>   

}

</ td >

</ tr >

< tr >

< td class = "title" > 自我介绍： </ td >

< td class = "content" >   < jsp:getProperty name = "regUser" property = "introduce" /></ td >

</ tr >

< tr >

< td class = "title" > 是否介绍协议： </ td >

< td class = "content" >   < jsp:getProperty name = "regUser" property = "flag" /></ td >

</ tr >

</ table >

</ center >

</ body >

</ html >

五测试效果

Servlet获取表单数据

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