Question

我正在创建一个Java Web应用程序，允许用户上传ARF文件，然后执行转换（将其转换为MP4格式）。目前，正在转换的文件正在我的Windows计算机上保存。但是，我希望能够将文件保存在Web服务器上，以便用户可以从Web访问和检索它。有没有办法可以做到这一点？

什么是允许我检索保存在我的计算机上并将其保存到Web应用程序的文件的Java代码？

下面是我的index.jsp代码：

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 <HTML>
<HEAD>
<TITLE>Display file upload form to the user</TITLE>
</HEAD>
<BODY>
<FORM ENCTYPE="multipart/form-data" ACTION="upload.jsp" METHOD=POST>
<br>
<br>
<br>
<center>
<table border="0" bgcolor=#ccFDDEE>
      <tr>
            <center>
            <td colspan="2" align="center"><B>UPLOAD THE FILE</B>
            <center>
            </td>
      </tr>
      <tr>
            <td colspan="2" align="center"></td>
      </tr>
      <tr>
            <td><b>Choose the file To Upload:</b></td>
            <td><INPUT NAME="file" TYPE="file"></td>
      </tr>
      <tr>
            <td colspan="2" align="center"></td>
      </tr>
      <tr>
            <td colspan="2" align="center"><input type="submit"
                  value="Send File"></td>
      </tr>
      <table>
            </center>
            </FORM>
</BODY>
</HTML>

upload.jsp代码：

 <%@ page import="java.io.*"%>
<%
      String saveFile = "";
      String contentType = request.getContentType();
      if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) {
            DataInputStream in = new DataInputStream(request.getInputStream());
            int formDataLength = request.getContentLength();
            byte dataBytes[] = new byte[formDataLength];
            int byteRead = 0;
            int totalBytesRead = 0;
            while (totalBytesRead < formDataLength) {
                  byteRead = in.read(dataBytes, totalBytesRead, formDataLength);
                  totalBytesRead += byteRead;
            }
            String file = new String(dataBytes);
            saveFile = file.substring(file.indexOf("filename=\"") + 10);
            saveFile = saveFile.substring(0, saveFile.indexOf("\n"));
            saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1, saveFile.indexOf("\""));
            int lastIndex = contentType.lastIndexOf("=");
            String boundary = contentType.substring(lastIndex + 1, contentType.length());
            int pos;
            pos = file.indexOf("filename=\"");
            pos = file.indexOf("\n", pos) + 1;
            pos = file.indexOf("\n", pos) + 1;
            pos = file.indexOf("\n", pos) + 1;
            int boundaryLocation = file.indexOf(boundary, pos) - 4;
            int startPos = ((file.substring(0, pos)).getBytes()).length;
            int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;
            saveFile = "C:/Webex/" + saveFile;
            File ff = new File(saveFile);
            FileOutputStream fileOut = new FileOutputStream(ff);
            fileOut.write(dataBytes, startPos, (endPos - startPos));
            fileOut.flush();
            fileOut.close();
%><Br>
<table border="2">
      <tr>
            <td><b>You have successfully upload the file by the name of:</b>
            <%
                  out.println(saveFile);
                  }

              try {  
                  Process p = Runtime.getRuntime().exec("cmd /C C:/Users/dheerajg/Desktop/webex2.vbs");  

              } catch (IOException e) {  
                  e.printStackTrace();  
              }  

            %>
            </td>
      </tr>
</table>

注意：webex2.vbs是执行转换的VB脚本文件。

web.xml代码：

<?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_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>Upload</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>
</web-app>

Java Web应用程序 - 在Web服务器上保存文件

0 个答案: