基于scp协议向linux发送文件

xiaoxiao2021-02-28  12

基于scp协议向linux发送文件的优点: 1.不需要linux服务器安装其他组件 2.可以再linux任意路劲下操作文件 3.但是需要开通scp权限

准备条件: jar包: ganymed-ssh2-build210.jar maven依赖:

<!-- https://mvnrepository.com/artifact/ch.ethz.ganymed/ganymed-ssh2 --> <dependency> <groupId>ch.ethz.ganymed</groupId> <artifactId>ganymed-ssh2</artifactId> <version>build210</version> </dependency>

首先写一个基本操作的demo 注:只提供通过ip、用户名、密码 连接linux服务的方式 基本测试用的demo(亲测):

package com.spongeli; import java.io.IOException; import ch.ethz.ssh2.Connection; import ch.ethz.ssh2.SCPClient; import ch.ethz.ssh2.SFTPv3Client; public class DEMO { public static void main(String[] args) { int port = 22; String hostname = "192.168.245.131"; String username = "root"; String password = "spongeli"; //1.0 创建连接 Connection connection = new Connection(hostname, port); //2.0 获取连接 try { connection.connect(); //3.0 验证用户名密码 boolean flag = connection.authenticateWithPassword(username, password); if(!flag){ throw new Exception("用户名、密码错误!"); } // 4.0 获取SCP客户端连接(用于操作上传下载文件) //SCPClient client = new SCPClient(connection); // 4.1 上传文件 //String localFile = "e:\\test5.xlsx"; //本地文件目录 //String targetDest = "/"; //上传目录 "/" 用户的家目录 //client.put(localFile, targetDest); //System.out.println("123"); //下载 //client.get("/test5.xlsx", "d://"); //5.0 操作服务器文件 /*5.1 建立一个SFTP客户端 */ SFTPv3Client sftpClient = new SFTPv3Client(connection); //创建一个文件 /*String fileName = "/abc"; sftpClient.createFile(fileName );*/ //创建一个目录 //sftpClient.mkdir("/dir", 0600); //删除一个空目录 //sftpClient.rmdir("/dir"); //删除文件 sftpClient.rm("/abc"); } catch (IOException e) { System.out.println("获取连接异常"); e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } }

封装工具类: 特点:封装了一个可以创建多层目录的方法,createFile,正常的提供的方法,只容许在父目录存在的情况下,创建子目录

package com.spongeli.utils; import java.io.IOException; import ch.ethz.ssh2.Connection; import ch.ethz.ssh2.SCPClient; import ch.ethz.ssh2.SFTPv3Client; public class ScpClientManager { private String ip ; private int port ; private String username ; private String password ; private static ScpClientManager instance; public static synchronized ScpClientManager getInstance(String ip, int port, String username, String password) { if (instance == null) { instance = new ScpClientManager(ip, port, username, password); } return instance; } private ScpClientManager(String ip, int port, String username, String password){ this.ip = ip ; this.username = username; this.port = port ; this.password = password ; } /*** * * @param remoteFile 需要下载的文件 * @param localTargetDirectory 下载到本地的目录 * @throws Exception */ public void getFile(String remoteFile, String localTargetDirectory) throws Exception { Connection conn = new Connection(ip,port); try { conn.connect(); boolean isAuthenticated = conn.authenticateWithPassword(username, password); if (isAuthenticated == false) { System.err.println("authentication failed"); } SCPClient client = new SCPClient(conn); client.get(remoteFile, localTargetDirectory); } catch (IOException ex) { ex.printStackTrace(); throw new Exception(); }finally { if(conn != null){ conn.close(); } } } /** * 上传文件至指定目录 * @param localFile 需要上传的本地文件 * @param remoteTargetDirectory 目标服务器的地址 * @throws Exception */ public void putFile(String localFile, String remoteTargetDirectory) throws Exception { Connection conn = new Connection(ip,port); try { conn.connect(); boolean isAuthenticated = conn.authenticateWithPassword(username, password); if (isAuthenticated == false) { System.err.println("authentication failed"); } SCPClient client = new SCPClient(conn); client.put(localFile, remoteTargetDirectory); } catch (IOException ex) { ex.printStackTrace(); throw new Exception(); }finally { if(conn != null){ conn.close(); } } } /** * 删除一个空的目录。。注意 空的 如果非空 删除失败 * @param destDir * @throws Exception */ public void deleteDir(String destDir) throws Exception{ Connection conn = new Connection(ip,port); try { conn.connect(); boolean isAuthenticated = conn.authenticateWithPassword(username, password); if (isAuthenticated == false) { System.err.println("authentication failed"); } /* 建立一个SFTP客户端 */ SFTPv3Client sftpClient = new SFTPv3Client(conn); if(destDir!=null&&destDir.length()>0){ destDir = destDir.replaceAll("\\\\", "/"); } sftpClient.rmdir(destDir); } catch (IOException ex) { ex.printStackTrace(); throw new Exception(); }finally { if(conn != null){ conn.close(); } } } /** * 在远程linux 服务器 删除文件 * @param destFile 目标文件 * @throws Exception */ public void deleteFile(String destFile) throws Exception{ Connection conn = new Connection(ip,port); try { conn.connect(); boolean isAuthenticated = conn.authenticateWithPassword(username, password); if (isAuthenticated == false) { System.err.println("authentication failed"); } /* 建立一个SFTP客户端 */ SFTPv3Client sftpClient = new SFTPv3Client(conn); sftpClient.rm(destFile); } catch (IOException ex) { ex.printStackTrace(); throw new Exception(); }finally { if(conn != null){ conn.close(); } } } /*** * 在远程linux服务器 创建目录 * 默认权限是0600 表示可读写 * @param directory 必须以/开头和/结尾 * @throws Exception */ public void createFile(String directory) throws Exception{ System.out.println("---需要创建目标目录---:"+directory); if(directory != null && directory.length()>0){ directory = directory.replaceAll("\\\\","/"); if(directory.startsWith("/") && directory.endsWith("/")){ Connection conn = new Connection(ip,port); try { conn.connect(); boolean isAuthenticated = conn.authenticateWithPassword(username, password); if (isAuthenticated == false) { System.err.println("authentication failed"); } /* 建立一个SFTP客户端 */ SFTPv3Client sftpClient = new SFTPv3Client(conn); StringBuffer sb = new StringBuffer(); /* 开始切割目录 */ directory = directory.substring(1, directory.length()-1); String[] split = directory.split("/"); /* 循环创建目录 */ for (int i = 0; i < split.length; i++) { sb.append("/"+split[i]); try { sftpClient.ls(sb.toString()); } catch (Exception e) { sftpClient.mkdir(sb.toString(), 0600); } } conn.close(); } catch (IOException ex) { ex.printStackTrace(); } }else{ throw new Exception("所传路径个是不合法!"); } }else{ throw new Exception("所传路径为空!"); } } public String getIp() { return ip; } public void setIp(String ip) { this.ip = ip; } public int getPort() { return port; } public void setPort(int port) { this.port = port; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } }

工具调用测试:

package com.spongeli.test; import com.spongeli.utils.ScpClientManager; public class Test { public static void main(String[] args) { String ip = "192.168.245.131"; String username = "root"; String password = "spongeli"; int port = 22; ScpClientManager manager = ScpClientManager.getInstance(ip, port, username, password); try { /*创建目录*/ //manager.createFile("\\usr/tmp/a/b/c/d\\"); /*删除空目录*/ //manager.deleteDir("/usr/tmp/a/b\\c"); /*删除文件 */ //manager.deleteFile("/var/tmp/a/b/a.txt"); /* 下载 文件 */ //manager.getFile("/var/tmp/a/b/全.txt", "E:\\sql"); /* 上传 文件 */ manager.putFile("E:\\junqi.jgs", "/"); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
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