在login.jsp输出用户填写的信息，注意中文乱码问题，如出现用
user.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>用户信息</title>
</head>
<% String path = request.getContextPath();
%>
<body>
<form action="<%=request.getContextPath() %>/threeServlet" method="post">
<table border="1px solid">
<tr>
<td>用户名：</td><td><input type="text" name="username"></td>
</tr>
<tr><td>性别：</td><td><input type="radio" name="sex" value="男">男<input type="radio"name="sex" value="女">女</td></tr>
<tr><td>学历：</td><td><select name="edu">
<option value="硕士">硕士</option>
<option value="本科">本科</option>
<option value="大专">大专</option>
</select></td></tr>
<tr><td>E-mail:</td><td><input type="email" name="email"></td></tr>
<tr ><td colspan="2" style="text-align:center"><button>重填</button><button type="submit">提交</button></td></tr>
</table>
</form>
<!-- <%String name1=request.getParameter("username"); %>
<%String sex1 = request.getParameter("sex"); %>
<%String edu1 = request.getParameter("edu"); %>
<%String email1 = request.getParameter("email"); %>-->
</body>
<script>
</script>
</html>
servlet内容转接
package net.wanho.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class ThreeServlet
*/
public class ThreeServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// request.setAttribute("username","name1");
request.setAttribute("wechart", "13823223212");
request.getRequestDispatcher("login.jsp").forward(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<% request.setCharacterEncoding("utf-8");%>
<table border="1px solid" >
<tr>
<td>用户名：</td><td><%=request.getParameter("username")%></td>
</tr>
<tr><td>性别：</td><td><%=request.getParameter("sex") %></td></tr>
<tr><td>学历：</td><td><%=request.getParameter("edu") %></td></tr>
<tr><td>E-mail:</td><td><%=request.getParameter("email") %></td></tr>
<tr>
<td>微信：</td>
<td><%=request.getAttribute("wechart")%></td>
</tr>
</table>
</body>
</html>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>HomeWork3_3</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<description></description>
<display-name>ThreeServlet</display-name>
<servlet-name>ThreeServlet</servlet-name>
<servlet-class>net.wanho.servlet.ThreeServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ThreeServlet</servlet-name>
<url-pattern>/threeServlet</url-pattern>
</servlet-mapping>
</web-app>
这一题里面主要要注意的是标签<form action="<%=request.getContextPath()%>/threeServlet " method="post">
这里面的request.getContextPath()%>/threeServlet指的是绝对路径，/threeServlet是servlet的映射url路径，要注意。
原文地址：https://www.cnblogs.com/sunstudy/p/12315382.html
时间： 2024-08-26 18:13:57