我正在尝试在上传后重命名文件，但我得到的错误是：
File Upload Failed due to java.io.FileNotFoundException: C:\Users\Akhil\Documents\CryptographicSteganography\Image\toshaMon Dec 29 22:21:41 IST 2014.jpg (The filename, directory name, or volume label syntax is incorrect).
我在stackoverflow以及其他网站中经历了几乎所有可能的相关主题，但无法解决此错误。
我的servlet类：
package FileUploadHandler;
import com.pointerunits.web.*;
import java.io.File;
import java.io.IOException;
import java.util.Date;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.FilenameUtils;
/**
* Servlet implementation class FileUploadServlet
*/
public class FileUploadServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
Date date = new Date();
String name = null;
public String UPLOAD_DIRECTORY = "";
/**
* @see HttpServlet#HttpServlet()
*/
public FileUploadServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
//process only if its multipart content
String FileType = (String)request.getSession().getAttribute("FileType");
//System.out.println(FileType);
String usrnam = (String) request.getSession().getAttribute("name");
//System.out.println(usrnam);
switch (FileType) {
case "image":
//UPLOAD_DIRECTORY = "C:/Users/Akhil/Downloads/SpringMain/SpringMain/WebContent/WEB-INF/Uploads/Image";
UPLOAD_DIRECTORY = "C:/Users/Akhil/Documents/CryptographicSteganography/Image";
break;
case "audio":
UPLOAD_DIRECTORY = "C:/Users/Akhil/Documents/CryptographicSteganography/Image";
break;
case "video":
UPLOAD_DIRECTORY = "C:/Users/Akhil/Documents/CryptographicSteganography/Image";
break;
default:
System.out.println("invalid path");
break;
}
//UPLOAD_DIRECTORY = getServletContext().getRealPath(UPLOAD_DIRECTORY);
//System.out.println(UPLOAD_DIRECTORY);
if(ServletFileUpload.isMultipartContent(request)){
try {
List<FileItem> multiparts = new ServletFileUpload(
new DiskFileItemFactory()).parseRequest(request);
// System.out.println(getName());
String nam = usrnam+date.toString();
for(FileItem item : multiparts){
if(!item.isFormField()){
String name = item.getName();
//System.out.println(name);
File uploadedFile = new File(UPLOAD_DIRECTORY+File.separator+nam+name.substring(name.indexOf('.')));
item.write(uploadedFile);
//File uploadedFile = new File(UPLOAD_DIRECTORY, name);
// item.write( new File(UPLOAD_DIRECTORY + File.separator + nam + name));
// System.out.println("uploaded file : "+uploadedFile.toString());
// System.out.println(nam);
// String f1 = uploadedFile.getAbsolutePath();
// System.out.println(f1);
//
// File oldName = new File(f1);
// //File newName = new File(UPLOAD_DIRECTORY+File.separator+nam+"."+FilenameUtils.getExtension(oldName.toString()));
// File newName = new File(UPLOAD_DIRECTORY,nam+name.substring(name.indexOf('.')));
// File uploadedFile = new File ("C:\\Users\\Akhil\\Documents\\CryptographicSteganography\\Image\\IMAG0187.jpg");
// File newName = new File("C:\\Users\\Akhil\\Documents\\CryptographicSteganography\\Image\\toshaMon Dec 29 22:01:40 IST 2014.jpg");
// boolean flag = uploadedFile.renameTo(newName);
//
// System.out.println(newName.toString());
//
//// File uploadedFile = new File(UPLOAD_DIRECTORY , nam);
//// item.write(uploadedFile);
//
}
}
System.out.println();
//File uploaded successfully
request.setAttribute("message", "File Uploaded Successfully");
} catch (Exception ex) {
request.setAttribute("message", "File Upload Failed due to " + ex);
}
}else{
request.setAttribute("message",
"Sorry this Servlet only handles file upload request");
}
request.getRequestDispatcher("/result.jsp").forward(request, response);
}
}
下面是.jsp网页：
<%@ 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>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Upload File</title>
</head>
<h1><%
String FileType = request.getParameter("select");
out.println("File Type is: "+FileType);
session.setAttribute("FileType", FileType);
%>
</h1>
<body>
<body>
File:
<%if (FileType.equalsIgnoreCase("image")){%>
<form method="POST" action="FileUploadServlet" enctype="multipart/form-data" >
<input type="file" name="<%=session.getAttribute("FileType")%>" accept="image/*"> <br/>
<input type="submit" value="Upload" name="upload" >
</form>
<% }
else if (FileType.equalsIgnoreCase("audio")){%>
<form method="POST" action="FileUploadServlet" enctype="multipart/form-data" >
<input type="file" name="<%=session.getAttribute("FileType") %>" accept="audio/*" > <br/>
<input type="submit" value="Upload" name="upload" >
</form>
<% }
else if (FileType.equalsIgnoreCase("video")){%>
<form method="POST" action="FileUploadServlet" enctype="multipart/form-data" >
<input type="file" name="<%=session.getAttribute("FileType") %>" accept="video/*" > <br/>
<input type="submit" value="Upload" name="upload" >
</form>
<% }
%>
</body>
</body>
</html>
对于这么多评论感到抱歉： 我的程序正在进行测试阶段
答案 0 :(得分：0)
可能是正确的问题，它无法访问该文件夹，因为它没有权利。 如果情况不是这样的话。
您应该尝试将文件名format数据值中的空格删除为不包含任何空格Sample Format Date的格式。因为空间可能会产生问题。
在item.write(uploadedFile);检查之前
if(!uploadedFile.exists()){
uploadedFile.createNewFile();
}