java访问Linux服务器读取文件

所需jar包：j2ssh-core-0.2.2.jar

java代码：

SshClient client=new SshClient();

try{

client.connect("此处是Linux服务器IP");

//设置用户名和密码

PasswordAuthenticationClient pwd = new PasswordAuthenticationClient();

pwd.setUsername("root");

pwd.setPassword("123456");

int result=client.authenticate(pwd);

if(result==AuthenticationProtocolState.COMPLETE){//如果连接完成

System.out.println("==============="+result);

List<SftpFile> list = client.openSftpClient().ls("/etc/mail/");

for (SftpFile f : list) {

System.out.println(f.getFilename());

System.out.println(f.getAbsolutePath());

if(f.getFilename().equals("aliases")){

OutputStream os = new FileOutputStream("d:/mail/"+f.getFilename());

client.openSftpClient().get("/etc/mail/aliases", os);

//以行为单位读取文件start

File file = new File("d:/mail/aliases");

BufferedReader reader = null;

try {

System.out.println("以行为单位读取文件内容，一次读一整行：");

reader = new BufferedReader(new FileReader(file));

String tempString = null;

int line = 1;//行号

//一次读入一行，直到读入null为文件结束

while ((tempString = reader.readLine()) != null) {

//显示行号

System.out.println("line " + line + ": " + tempString);

line++;

}

reader.close();

} catch (IOException e) {

e.printStackTrace();

} finally {

if (reader != null) {

try {

reader.close();

} catch (IOException e1) {

}

}

}

//以行为单位读取文件end

}

}

}

}catch(IOException e){

e.printStackTrace();

}