404问题。打不开页面！（内附所有代码&web.xml文件内容）
陷入编程无法自拔的江北
2016-11-02 19:29
问题见题。
web.xml如下
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name></display-name>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>RegistServlet</servlet-name>
<servlet-class>servlet.RegistServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>RegistServlet</servlet-name>
<url-pattern>/servlet/RegistServlet</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>regist.jsp</welcome-file>
</welcome-file-list>
</web-app>
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regist.jsp如下
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.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">
-->
<style type="text/css">
.label{
width: 20%
}
.controler{
width: 80%
}
</style>
<script type="text/javascript" src="js/Calendar.js"></script>
</head>
<body>
<h1>用户d注册</h1>
<hr>
<form name="registForm" action="servlet/RegistServlet">
<table border="0" width="800" cellspacing="0" cellpadding="0">
<tr>
<td class="label">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="userpass" /></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">电子邮件：</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" value="Male" checked="checked" />男 <%-- checked="checked"表明默认选中 --%>
<input type="radio" name="gender" value="Female" />女
</td>
</tr>
<tr>
<td class="label">出生日期：</td>
<td class="controler">
<input type="text" name="birthday"
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>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>
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username.jsp如下
<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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<style type="text/css">
.title{
width: 30%;
background-color: #CCC;
font-weight: bold;
}
.content{
width:70%;
background-color: #CBCFE5;
}
</style>
</head>
<body>
<body>
<h1>用户信息</h1>
<hr>
<center>
<jsp:useBean id="regUser" class="com.entity.User" scope="session" />;
<table width="600" cellpadding="0" cellspacing="0" border="1">
<tr>
<td class="title">用户名：</td> <%-- name为实例化对象的名字,property为要取得的属性 --%>
<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="password"></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[] favorite = regUser.getFavorites();
for (String f:favorite){
%>
<%=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">是否遵守协议：</td>
<td class="content"> <jsp:getProperty name="regUser" property="flag"/></td>
</tr>
</table>
</center>
</body>
</html>
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RegistServlet如下
public class RegistServlet extends HttpServlet {
public RegistServlet() {
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 {
User user = new User();
String username,password,gender,email,introduce,isAccept;
Date birthday;
String[] favorite;
SimpleDateFormat sdf = new SimpleDateFormat("YYYY年MM月DD日hh:mm:ss");
try{
username = request.getParameter("username");
password = request.getParameter("password");
gender = request.getParameter("gender");
email = request.getParameter("email");
introduce = request.getParameter("introduce");
birthday = sdf.parse(request.getParameter("birthday"));
favorite = request.getParameterValues("favorite");
isAccept = request.getParameter("isAccept");
user.setAccept(isAccept.equals("true")?true:false);
user.setBirthday(birthday);
user.setEmail(email);
user.setFavorites(favorite);
user.setGender(gender);
user.setIntroduce(introduce);
user.setPassword(password);
user.setUsername(username);
//将成功注册用户保存到session
request.getSession().setAttribute("regUser", user);
//跳转(转发)到成功页面
request.getRequestDispatcher("../userinfo.jsp").forward(request, response);
}catch(Exception e){
e.printStackTrace();
}
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
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输入路径绝对没错（不要告诉我这个了···）求解！
2回答
-
- WTANG
- 2016-11-09 23:21:06
你应该直接把老师的jsp文件拷进来了，表单<form name="regForm" action="RegServlet" method="post" >
action要与你的配置文件中<url-pattern>/RegServlet</url-pattern>要相同，老师给的action是action="servlet/RegServlet",你需要改成自己的。
-
- 慕粉4005235
- 2016-12-06 22:05:49
求问怎么解决的啊，我也遇到404问题，谢谢
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