利用JSP&Servlet重构项目 利用 cos 组件实现jsp中上传附件
fileUpload.jsp --> FileUploadController.java --> fileUploadResult.jsp
fileUpload.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>文件上传demo</title>
<link href="/web01//css/main.css" rel="stylesheet" type="text/css" />
</head>
<%@ include file="top.jsp" %>
<body>
<form action="/web01/fileUploadController" name="frm1" method="post" enctype="multipart/form-data">
文件名：<input type="file" name="file1" size="50"><br>
<input type="submit" value="上传">
</form>
</body>
<%@ include file="bottom.jsp" %>
</html>
FileUploadController.java
package com.test.IF.controller;
import java.io.IOException;
import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.oreilly.servlet.MultipartRequest;
import com.oreilly.servlet.multipart.DefaultFileRenamePolicy;
/**
* Servlet implementation class FileUploadController
*/
@WebServlet("/fileUploadController")
public class FileUploadController extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public FileUploadController() {
super();
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// 文件要保存的路径
String savePath = "d:/test/uploadfile/";
int sizeLimit = 30 * 1024 * 1024;
String fileName = "";
String fileSystemName = "";
long fileSize = 0;
MultipartRequest multi = new MultipartRequest(request, savePath, sizeLimit, "UTF-8", new DefaultFileRenamePolicy());
Enumeration fileNames = multi.getFileNames();
while (fileNames.hasMoreElements()) {
fileName = (String) fileNames.nextElement();
fileSystemName = multi.getFilesystemName(fileName);
if (fileSystemName != null) {
fileSize = multi.getFile(fileName).length() / 1024;
}
}
request.setAttribute("fileSystemName", fileSystemName);
request.setAttribute("fileSize", fileSize);
request.getRequestDispatcher("/view/fileUploadResult.jsp").forward(request, response);
}
}
fileUploadResult.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>文件上传demo</title>
<link href="/web01//css/main.css" rel="stylesheet" type="text/css" />
</head>
<%@ include file="top.jsp" %>
<body>
文件上传成功！<br>
文件名：<c:out value="${requestScope.fileSystemName }"></c:out><br>
文件大小：<c:out value="${requestScope.fileSize }"></c:out>
</body>
<%@ include file="bottom.jsp" %>
</html>
时间： 2024-08-23 11:07:55