import java.io.BufferedInputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.net.MalformedURLException; import java.net.UnknownHostException;  import jcifs.smb.SmbException; import jcifs.smb.SmbFile; import jcifs.smb.SmbFileOutputStream;  public class SmbUtil {   // 1. 聲明屬性   private String url = "smb://userName:password@192.168.2.153/mars/";   private SmbFile smbFile = null;   private SmbFileOutputStream smbOut = null;   private static SmbUtil smbUtil = null; // 共享文件協議      private SmbUtil(String url) {     this.url = url;     this.init();   }      // 2. 得到SmbUtil和連接的方法   public static synchronized SmbUtil getInstance(String url) {     if (smbUtil == null)       return new SmbUtil(url);     return smbUtil;   }       // 3.smbFile連接   public void init() {     try {       System.out.println("開始連接...url：" + this.url);       smbFile = new SmbFile(this.url);       smbFile.connect();       System.out.println("連接成功...url：" + this.url);     } catch (MalformedURLException e) {       e.printStackTrace();       System.out.print(e);     } catch (IOException e) {       e.printStackTrace();       System.out.print(e);     }   }      // 4.上傳文件到服務器   public int uploadFile(File file) {     int flag = -1;     BufferedInputStream bf = null;     try {       this.smbOut = new SmbFileOutputStream(this.url + "/"           + file.getName(), false);       bf = new BufferedInputStream(new FileInputStream(file));       byte[] bt = new byte[8192];       int n = bf.read(bt);       while (n != -1) {         this.smbOut.write(bt, 0, n);         this.smbOut.flush();         n = bf.read(bt);       }       flag = 0;       System.out.println("文件傳輸結束...");     } catch (SmbException e) {       e.printStackTrace();       System.out.println(e);     } catch (MalformedURLException e) {       e.printStackTrace();       System.out.println(e);     } catch (UnknownHostException e) {       e.printStackTrace();       System.out.println("找不到主機...url：" + this.url);     } catch (IOException e) {       e.printStackTrace();       System.out.println(e);     } finally {       try {         if (null != this.smbOut)           this.smbOut.close();         if (null != bf)           bf.close();       } catch (Exception e2) {         e2.printStackTrace();       }     }      return flag;   }    // 5. 在main方法里面測試   public static void main(String[] args) {     // 服務器地址 格式為 smb://電腦用戶名:電腦密碼@電腦IP地址/IP共享的文件夾     String remoteUrl = "smb://wangqinghua:wqh123@192.168.2.153/mars/";     String localFile = "F:/開關生產銷售企業名錄.xls"; // 本地要上傳的文件     File file = new File(localFile);     SmbUtil smb = SmbUtil.getInstance(remoteUrl);     smb.uploadFile(file);// 上傳文件   } }