web.xml配置如下：
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<span style="font-family:SimSun;font-size:14px;"><?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" version="2.5">
<display-name>FileUploadAndDownload</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>
<!-- 上传配置 -->
<servlet>
<servlet-name>uploadHandleServlet</servlet-name>
<servlet-class>com.zeng.controller.UploadHandleServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>uploadHandleServlet</servlet-name>
<url-pattern>/upload/uploadHandleServlet</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>listFileServlet</servlet-name>
<servlet-class>com.zeng.controller.ListFileServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>listFileServlet</servlet-name>
<url-pattern>/listFileServlet</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>downLoadServlet</servlet-name>
<servlet-class>com.zeng.controller.DownLoadServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>downLoadServlet</servlet-name>
<url-pattern>/download/downLoadServlet</url-pattern>
</servlet-mapping>
</web-app></span> |
2.upload.jsp文件
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<span style="font-family:SimSun;font-size:14px;"><%@page language="java" pageEncoding="UTF-8"%>
<!DOCTYPE HTML>
<html>
<head>
<title>文件上传</title>
</head>
<body>
<!--
${pageContext.request.contextPath} : 作用是取出部署的应用程序名
缺点:操作不便，其他工具无法正确解释${pageContext.request.contextPath}
如果Servlet的配置路径为 /upload/uploadHandleServlet
action跳转路径为: ${pageContext.request.contextPath}/upload/uploadHandleServlet
上传文件时,必须
1.enctype="multipart/form-data"
2.method=post
-->
<form action="${pageContext.request.contextPath}/upload/uploadHandleServlet" enctype="multipart/form-data" method="post">
上传用户：<input type="text" name="username"><br/>
上传文件1：<input type="file" name="file1"><br/>
上传文件2：<input type="file" name="file2"><br/>
<input type="submit" value="提交">
</form>
</body>
</html></span> |
3.message.jsp
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<span style="font-family:SimSun;font-size:14px;"><%@page language="java" pageEncoding="UTF-8"%>
<!DOCTYPE HTML>
<html>
<head>
<title>消息提示</title>
</head>
<body>
${message}
</body>
</html></span> |
4.UploadHandleServlet.java
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