windows从linux拷贝下载文件的两种方式
2021-04-10 21:56
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1，通过ssh协议用scp命令拷贝
1.1 windows安装freeSSHD（使用密码登录）见博文https://blog.csdn.net/u014296316/article/details/88616023
1.2 安装git
配置windows免密登录到linux，这样从linux上scp文件时就不用输入密码了：
git 生成密钥对，gitbash命令行输入命令ssh-keygen
将生成的公钥id_rsa.pub拷贝到linux服务器上
将windows拷贝来的文件追加至authorized_keys文件中，cat /windows公钥拷贝文件所在目录/id_rsa.pub >> authorized_keys
SSHUtil工具类，用于建立远程ssh连接并执行命令
public class SSHUtil {
private static Logger logger = LoggerFactory.getLogger(SSHUtil.class);
private static int timeout = 20 * 1000; // 超时时间改成20s , 有的服务器10s 连接不上 ...
public static Session getJSchSession(String username, String host, String password, Integer port) throws JSchException {
JSch jsch = new JSch();
Session session = jsch.getSession(username, host, port);
session.setPassword(password);
session.setConfig("StrictHostKeyChecking", "no");//第一次访问服务器不用输入yes
session.setTimeout(timeout);
session.connect();
return session;
}
public static String execCommandByJSch(Session session, String command, String resultEncoding) throws IOException,JSchException {
logger.info("执行命令：" + command);
ChannelExec channelExec = (ChannelExec) session.openChannel("exec");
channelExec.setCommand(command);
channelExec.connect();
InputStream in = channelExec.getInputStream();
InputStream err = channelExec.getErrStream();
String result = IOUtils.toString(in, resultEncoding);
String error = IOUtils.toString(err, resultEncoding);
logger.info("返回结果：" + result);
logger.info("错误结果：" + error);
channelExec.disconnect();
return result + error;
}
//上传文件
public static void uploadFile(Session session, String directory, String uploadFile) throws Exception{
Channel channel = session.openChannel("sftp");
channel.connect();
ChannelSftp sftp = (ChannelSftp) channel;
upload(directory,uploadFile,sftp);
channel.disconnect();
}
//上传文件
public static void deleteFile(Session session, String directory) throws Exception{
Channel channel = session.openChannel("sftp");
channel.connect();
ChannelSftp sftp = (ChannelSftp) channel;
delete(directory,sftp);
channel.disconnect();
}
public static void delete(String directory,ChannelSftp sftp) throws SftpException {
directory=directory.replace('\\','/');
if (!directory.endsWith("/")){
directory+="/";
}
Vector<?> content= sftp.ls(directory);
for (Iterator<?> it = content.iterator(); it.hasNext();) {
ChannelSftp.LsEntry entry = (ChannelSftp.LsEntry) it.next();
if (entry.getFilename().equals(".")){
continue;
}
if (entry.getFilename().equals("..")){
continue;
}
SftpATTRS sftpATTRS= sftp.lstat(directory+entry.getFilename());
if (sftpATTRS.isDir()){
delete(directory+entry.getFilename(),sftp);
}else{
sftp.rm(directory+entry.getFilename());
}
}
sftp.rmdir(directory);
}
//上传文件
public static void upload(String directory, String uploadFile, ChannelSftp sftp) throws Exception{
File file = new File(uploadFile);
if(file.exists()){
try {
Vector content = sftp.ls(directory);
if(content == null){
sftp.mkdir(directory);
}
} catch (SftpException e) {
logger.info("出现异常！！");
logger.error(e.getMessage(),e);
sftp.mkdir(directory);
}
//进入目标路径
sftp.cd(directory);
if(file.isFile()){
InputStream ins = null;
try {
ins = new FileInputStream(file);
//中文名称的
sftp.put(ins, new String(file.getName().getBytes(),"UTF-8"));
} catch (Exception e) {
logger.error(e.getMessage() , e);
} finally {
if (ins != null) {
ins.close();
}
}
//sftp.setFilenameEncoding("UTF-8");
}else{
File[] files = file.listFiles();
for (File file2 : files) {
String uploadFilePath2 = file2.getAbsolutePath();
String directory2 = directory + "";
if(file2.isDirectory()){
String str = uploadFilePath2.substring(uploadFilePath2.lastIndexOf(file2.separator));
if(file2.separator.equals("\\")){
str = str.replaceAll("\\\\","/");
}
directory2 += str;
}
upload(directory2,uploadFilePath2,sftp);
}
}
}
}
} private void uploadWindowsAgent () throws Exception{
//workspace 为windows上的路径
String workspace = server.getWorkspace();
String directory = workspace + "/atp-agent";
directory=directory.replace('/','\\');
logger.info("删除旧版本的agent开始...");
String deleteFileCommand = "cmd /c call rd \\s \\q "+ directory;
SSHUtil.execCommandByJSch(session,deleteFileCommand,"gbk");
logger.info("删除旧版本的agent完成...");
String mkdirCommand = "cmd /c call mkdir "+ directory;
logger.info("-> " + mkdirCommand);
SSHUtil.execCommandByJSch(session,mkdirCommand,"gbk");
// SSHUtil.deleteFile(session,directory);
logger.info("上传最新的agent到服务器...");
String uploadFileCommand = "cmd /c call scp -r root@"+ip+":"+targetPath+" "+ workspace;
SSHUtil.execCommandByJSch(session,uploadFileCommand,"gbk");
// SSHUtil.uploadFile(session, directory, targetPath);
logger.info("上传agent完成");
FileUtil.deleteDir(targetPath);
}Windows批处理call和start的区别 参考博文 https://blog.csdn.net/sinat_34439107/article/details/79023866
2，通过http协议下载
客户端发送请求
//客户端代码
downloadUtil.download(appConfig.getTestPlatformUrl()+"/api/download",workspace,"atp-agent.zip");
public void download(final String requestUrl, final String destFileDir, final String destFileName) throws Exception{
FileOutputStream out = null;
InputStream in = null;
try{
URL url = new URL(requestUrl);
URLConnection urlConnection = url.openConnection();
HttpURLConnection httpURLConnection = (HttpURLConnection) urlConnection;
// true -- will setting parameters
httpURLConnection.setDoOutput(true);
// true--will allow read in from
httpURLConnection.setDoInput(true);
// will not use caches
httpURLConnection.setUseCaches(false);
// setting serialized
httpURLConnection.setRequestProperty("Content-type", "application/x-java-serialized-object");
// default is GET
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setRequestProperty("connection", "Keep-Alive");
httpURLConnection.setRequestProperty("Charsert", "UTF-8");
// 1 min
httpURLConnection.setConnectTimeout(60000);
// 1 min
httpURLConnection.setReadTimeout(60000);
// connect to server (tcp)
httpURLConnection.connect();
in = httpURLConnection.getInputStream();// send request to
// server
File dir = new File(destFileDir);
if(!dir.exists()){
dir.mkdirs();
}
File file = new File(destFileDir, destFileName);
out = new FileOutputStream(file);
byte[] buffer = new byte[4096];
int readLength;
while ((readLength=in.read(buffer)) > 0) {
// byte[] bytes = new byte[readLength];
// System.arraycopy(buffer, 0, bytes, 0, readLength);
out.write(buffer,0,readLength);
}
out.flush();
}finally{
try {
if(in != null){
in.close();
}
} catch (IOException e) {
e.printStackTrace();
}
try {
if(out != null){
out.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
//服务端代码
@RequestMapping(value = "/api/download",method = RequestMethod.POST)
public void processDownload(HttpServletRequest request, HttpServletResponse response){
int bufferSize = 4096;
InputStream in = null;
OutputStream out = null;
try{
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("application/octet-stream");
String agentPath= appConfig.getAgentPath();
File file = new File(agentPath+".zip");
response.setContentLength((int) file.length());
response.setHeader("Accept-Ranges", "bytes");
int readLength;
in = new BufferedInputStream(new FileInputStream(file), bufferSize);
out = new BufferedOutputStream(response.getOutputStream());
byte[] buffer = new byte[bufferSize];
while ((readLength=in.read(buffer)) > 0) {
// byte[] bytes = new byte[readLength];
// System.arraycopy(buffer, 0, bytes, 0, readLength);
out.write(buffer,0,readLength);
}
out.flush();
}catch(Exception e){
logger.error(e.getMessage(),e);
}finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
logger.error(e.getMessage(),e);
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
logger.error(e.getMessage(),e);
}
}
}
}
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