android系统上传文件可以成功接收但是会出现文件名乱码的情况 代码贴出 求指点

Question

android客户端核心代码
private void uploadFile()
  {    String uploadUrl = "http://10.100.0.11:8080/upload_file_service/UploadServlet";
    String end = "\r\n";
    String twoHyphens = "--";
    String boundary = "******";
    try
    {
      URL url = new URL(uploadUrl);
      HttpURLConnection httpURLConnection = (HttpURLConnection) url
          .openConnection();
      httpURLConnection.setDoInput(true);
      httpURLConnection.setDoOutput(true);
      httpURLConnection.setUseCaches(false);
      httpURLConnection.setRequestMethod("POST");
      httpURLConnection.setRequestProperty("Connection", "Keep-Alive");
      httpURLConnection.setRequestProperty("Charset", "UTF-8");
      httpURLConnection.setRequestProperty("Content-Type",
          "multipart/form-data;boundary=" + boundary);      DataOutputStream dos = new DataOutputStream(httpURLConnection
          .getOutputStream());
      dos.writeBytes(twoHyphens + boundary + end);
      dos
          .writeBytes("Content-Disposition: form-data; name=\"file\"; filename=\""
              + srcPath.substring(srcPath.lastIndexOf("/") + 1)
              + "\"" + end);
      dos.writeBytes(end);      FileInputStream fis = new FileInputStream(srcPath);
      byte[] buffer = new byte[8192]; // 8k
      int count = 0;
      while ((count = fis.read(buffer)) != -1)
      {
        dos.write(buffer, 0, count);      }
      fis.close();      dos.writeBytes(end);
      dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
      dos.flush();      InputStream is = httpURLConnection.getInputStream();
      InputStreamReader isr = new InputStreamReader(is, "utf-8");
      BufferedReader br = new BufferedReader(isr);
      String result = br.readLine();      Toast.makeText(this, result, Toast.LENGTH_LONG).show();
      dos.close();
      is.close();    } catch (Exception e)
    {
      e.printStackTrace();
      setTitle(e.getMessage());
    }  }
服务器端核心代码如下
try
{
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8"); 
PrintWriter out = response.getWriter();
FileItemFactory factory = new DiskFileItemFactory(); 
ServletFileUpload upload = new ServletFileUpload(factory);

List<FileItem> items = upload.parseRequest(request);

String uploadPath = "d:\\upload\\";
File file = new File(uploadPath);
if (!file.exists())
{
file.mkdir();
}
String filename = "miui_pic"; 
InputStream is = null; 
for (FileItem item : items)
{

if (item.isFormField())
{
if (item.getFieldName().equals("filename"))
{
// 如果新文件不为空，将其保存在filename中
if (!item.getString().equals(""))
filename = item.getString("UTF-8");
}
}

else if (item.getName() != null && !item.getName().equals(""))
{
filename = item.getName().substring(
item.getName().lastIndexOf("\\") + 1);
is = item.getInputStream();
}
}

filename = uploadPath + filename;

if (new File(filename).exists())
{
new File(filename).delete();
}

if (!filename.equals(""))
{
FileOutputStream fos = new FileOutputStream(filename);
byte[] buffer = new byte[8192]; 
int count = 0;

while ((count = is.read(buffer)) > 0)
{
fos.write(buffer, 0, count); 

}
fos.close(); 
is.close(); 
out.println("文件上传成功!");

}
}
catch (Exception e)
{ }