【重构】利用cos组件实现jsp中上传附件

2019-11-14 15:25:23

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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>