【远程传输】java上传文件到共享文件夹

╰+攻爆jí腚メ 2022-05-16 03:06 611阅读 0赞

今天做到一个需求 是要用Java把文件上传到共享文件夹  下面是一个例子  以后备用

注：用到一个jar包 jcifs-1.3.14.jar

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;
    import jcifs.util.LogStream;
     
    public class Smb {
           private static LogStream log = LogStream.getInstance();  //打印日志 
    		private String url = "";       
    		private SmbFile smbFile = null; 
    		private SmbFileOutputStream smbOut = null; 
    		private static Smb smb = null; //共享文件协议 
    	
    		public static synchronized Smb getInstance(String url) { 
    		  if (smb == null) 
    		   return new Smb(url); 
    		  return smb; 
    		} 
     
    		/** 
    		  * @param url服务器路径 
    		  */ 
    		private Smb(String url) { 
    			  this.url = url; 
    			  this.init(); 
    		} 
     
    		public void init() { 
    			  try { 
    				   log.println("开始连接...url：" + this.url); 
    				   smbFile = new SmbFile(this.url); 
    				   smbFile.connect(); 
    				   log.println("连接成功...url：" + this.url); 
    			  } catch (MalformedURLException e) { 
    				  e.printStackTrace(); 
    				  log.print(e); 
    			  } catch (IOException e) { 
    				   e.printStackTrace(); 
    				   log.print(e); 
    			  } 
    		} 
     
    		
     
    		/** 
    		  * 上传文件到服务器 
    		  */ 
    		public int uploadFile(File file) { 
    			  int flag = -1; 
    			  BufferedInputStream bf = null; 
    			  try { 
    				   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; 
    				   log.println("文件传输结束..."); 
    			  } catch (SmbException e) { 
    				   e.printStackTrace(); 
    				   log.println(e); 
    			  } catch (MalformedURLException e) { 
    				   e.printStackTrace(); 
    				   log.println(e); 
    			  } catch (UnknownHostException e) { 
    				   e.printStackTrace(); 
    				   log.println("找不到主机...url：" + this.url); 
    			  } catch (IOException e) { 
    				   e.printStackTrace(); 
    				   log.println(e); 
    			  } finally { 
    				   try { 
    				    if (null != this.smbOut) 
    				     this.smbOut.close(); 
    				    if (null != bf) 
    				     bf.close(); 
    				   } catch (Exception e2) { 
    				    e2.printStackTrace(); 
    				   } 
    			  } 
    	
    			  return flag; 
    		} 
    		public static void main(String[] args) { 
    			  //服務器地址 格式為 smb://电脑用户名:电脑密码@电脑IP地址/IP共享的文件夹 
    			  String remoteUrl = "smb://niu:0908@172.16.51.110/imashare/";  
    			  String localFile = "C:/Users/niu/Desktop/all/GFS_170221_093426.txt";  //本地要上传的文件 
    			  File file = new File(localFile); 
    			  Smb smb = Smb.getInstance(remoteUrl); 
    			  smb.uploadFile(file);// 上传文件 
    		}
    		
    	}

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