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package com.servlet;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
/**
*
*/
public class RegistServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
// 1.创建一个磁盘文件工厂对象
DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();
// 2.创建一个核心解析类
ServletFileUpload servletFileUpload = new ServletFileUpload(diskFileItemFactory);
// 3.解析request请求，返回的是List集合，List集合中存放的是FileItem对象
List<FileItem> list = servletFileUpload.parseRequest(request);
// 4.遍历集合，获得每个FileItem,判断是表单项还是文件上传项
for(FileItem fileItem : list) {
//判断是表单项还是文件上传项
if(fileItem.isFormField()) {
//普通表单项
//接收表单项参数的值
String name = fileItem.getFieldName();//获取表单的name属性的值
String value = fileItem.getString("UTF-8");//获取表单项的值
System.out.println(name+" "+value);
}else {
}
}
}catch(FileUploadException e) {
e.printStackTrace();
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>reg_login</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>
<display-name>InitServlet</display-name>
<servlet-name>InitServlet</servlet-name>
<servlet-class>com.servlet.InitServelt</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>InitServlet</servlet-name>
<url-pattern>/InitServlet</url-pattern>
</servlet-mapping>
</web-app>
---------------------------------------------------------------------
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>注册</title>
<link rel="stylesheet" href="./css/reg.css">
</head>
<body>
<div class="reg">
<div class="header">
<h1>
<a href="./login.jsp">登录</a> <a href="./regist.jsp">注册</a>
</h1>
</div>
<form action="/reg_login/RegistServlet" method="post" enctype="multipart/form-data">
<table>
<tr>
<td class="td1">用户名</td>
<td><input type="text" class="input1" name="username"></td>
</tr>
<tr>
<td class="td1">密码</td>
<td><input type="password" class="input1" name="password"></td>
</tr>
<tr>
<td class="td1">昵称</td>
<td><input type="text" class="input1" name="nickname"></td>
</tr>
<tr>
<td class="td1">性别</td>
<td>
<input type="radio" name="sex" value="male">男
<input type="radio" name="sex" value="female">女
</td>
</tr>
<tr>
<td class="td1">上传头像</td>
<td><input type="file" id="photo" name="upload"></td>
</tr>
<tr>
<td class="td1">兴趣爱好</td>
<td><label>
<input type="checkbox" name="hobby" value="篮球">篮球
<input type="checkbox" name="hobby" value="足球">足球
<input type="checkbox" name="hobby" value="排球">排球
<input type="checkbox" name="hobby" value="羽毛球">羽毛球
</label></td>
</tr>
<tr>
<td colspan="2">
<div class="btn-red">
<input type="submit" value="注册" id="reg-btn">
</div>
</td>
</tr>
</table>
</form>
</div>
</body>
</html>20
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2回答
chrismorgen
2018-06-27 19:02:16
你的RegistServlet没有在web.xml中注册，将下图代码添加到web.xml中问题就解决了，如果我的建议解决了你的问题，请采纳，祝学习愉快~
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