如何在服务器上传文件?
问题描述:
我想从客户端上传pdf到服务器。 我甲肝使用下面的代码..如何在服务器上传文件?
<%@ page import="java.io.*" %>
<%
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);
String 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="http://hpws1/shared_mxd/pdf/" + saveFile;
FileOutputStream fileOut = new FileOutputStream(saveFile);
fileOut.write(dataBytes, startPos, (endPos - startPos));
fileOut.flush();
fileOut.close();
%><Br><table border="2"><tr><td><b>You have successfully
由名上传的文件: <%通过out.println(saveFile的); %> <% } %>
其中 “saveFile的=” HTTP:// hpws1/shared_mxd/PDF/“+ saveFile的;” 是服务器的路径。 但浏览器无法识别此路径,并给出错误“文件名,目录名或卷标语法不正确”。 我该如何解决?
答
为什么不使用表单发送文件?像这样:
<FORM ENCTYPE='multipart/form-data'
method='POST' action='/myservlet'>
<INPUT TYPE='file' NAME='mptest'>
<INPUT TYPE='submit' VALUE='upload'>
</FORM>
你想保存文件的位置? – 2011-03-10 11:38:09