我刚刚实现了一个 jsp 程序来将文件上传到我的 PC 文件夹中。此文件夹的路径是E:\UploadedFile. 我要下载的文件名是assad.xml（我刚刚上传的那个）。这就是我尝试下载它的方式。如果我错了，请检查我的代码并纠正我。
<%@page import="java.io.*,java.net.*"%>
<%
System.setProperty("http.proxyHost", "192.168.1.10");
System.setProperty("http.proxyPort", "8080");
try {
/*
* Get a connection to the URL and start up
* a buffered reader.
*/
long startTime = System.currentTimeMillis();
System.out.println("Connecting to URL...\n");
URL url = new URL("E://UploadedFiles/");
url.openConnection();
InputStream reader = url.openStream();
/*
* Setup a buffered file writer to write
* out what we read from the website.
*/
FileOutputStream writer = new FileOutputStream("E:/assad.xml");
byte[] buffer = new byte[153600]; // Buffer for 150K blocks at a time
int totalBytesRead = 0;
int bytesRead = 0;
System.out.println("Reading ZIP file 150KB blocks at a time.\n");
while ((bytesRead = reader.read(buffer)) > 0){
writer.write(buffer, 0, bytesRead);
buffer = new byte[153600];
totalBytesRead += bytesRead;
}
long endTime = System.currentTimeMillis();
System.out.println("Done. " + (new Integer(totalBytesRead).toString()) + " bytes
read (" +
(new Long(endTime - startTime).toString())+ " millseconds).\n");
writer.close();
reader.close();
}catch (MalformedURLException e){
e.printStackTrace();
}
catch (IOException e){
e.printStackTrace();
}
%>
我刚刚上传文件的文件夹的名称是UploadedFiles，它位于E: drive中。我要下载的文件的名称是assad.xml。它在此文件夹中可用。