1.訪問共享檔案，一定要寫在”子執行緒”，不要寫在主執行緒裡面，不然一直閃退。為了這個不知道掉了幾根頭髮

new Thread(new Runnable() {
                        @Override

                        public void run() {
                            SmbToUpdate();
                        }
                    }).start();

public  void  SmbToUpdate()
    {

        InputStream 
 
in = null ;
        ByteArrayOutputStream out = null ;
        try {
            NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("smb://192.168.XX.XX","使用者名稱", "密碼");
            SmbFile remoteFile = new SmbFile("smb://192.168.XX.XX/Share/AutoUpdater.xml", auth);
            remoteFile.connect(); 
 
//嘗試連線
            in = new BufferedInputStream(new SmbFileInputStream(remoteFile));
            out = new ByteArrayOutputStream((int)remoteFile.length());
            //讀取檔案內容
            byte[] buffer = new byte[4096];
            int len = 0; //Read length
            while ((len = in.read(buffer, 0, buffer.length)) != - 1
 
) {
                out.write(buffer, 0, len);
            }
            out.flush(); //方法重新整理此輸出流並強制將所有緩衝的輸出位元組被寫出
            byte[] data= out.toByteArray();

            String Xml = new String(data);
        }
        catch (Exception e) {
            String msg = "Download a remote file error: " + e.getLocalizedMessage();
            System.out.println(msg);
        }
        finally {
            try {
                if(out != null) {
                    out.close();
                }
                if(in != null) {
                    in.close();
                }
            }
            catch (Exception e) {
                int a=1;
            }
        }
    }