依赖
<dependency>
<groupId>commons-net</groupId>
<artifactId>commons-net</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.ant</groupId>
<artifactId>ant</artifactId>
<version>1.10.5</version>
</dependency>
可选择多个路径进行压缩
依赖
<dependency>
<groupId>org.apache.ant</groupId>
<artifactId>ant</artifactId>
<version>1.10.5</version>
</dependency>
可选择多个路径进行压缩
依赖
<dependency>
<groupId>org.apache.ant</groupId>
<artifactId>ant</artifactId>
<version>1.10.5</version>
</dependency>
可选择多个路径进行压缩
package per.qiao.utils.ftp;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPClientConfig;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
/**
* Create by IntelliJ Idea 2018.2
*
* @author: qyp
* Date: 2019-07-19 17:10
*/
public class FtpFileZipUtls {
private final static Logger logger = LoggerFactory.getLogger(FtpFileZipUtls.class);
/**
* 加载一个非空文件夹
*/
private static void loadFile(FTPClient ftp, String dirPath, ZipOutputStream zos) throws IOException {
FTPFile[] ftpFiles = ftp.listFiles();
// length小于0用于区分非空文件夹与空文件夹和文件的区别
// 退到上层再进入
if (ftpFiles.length <= 0 && ftp.changeToParentDirectory()) {
logger.info("退回到: " + ftp.printWorkingDirectory());
dirPath = dirPath.replaceAll("\\", "/");
boolean b = ftp.changeWorkingDirectory(getFileName(dirPath.substring(dirPath.lastIndexOf("/") + 1)));
logger.info("进入: " + ftp.printWorkingDirectory());
// 是一个空文件夹
if (b && (ftpFiles == null || ftpFiles.length <= 0)) {
zos.putNextEntry(new ZipEntry(getFileName(dirPath) + File.separator));
return;
}
}
for (FTPFile f : ftpFiles) {
if (f.isFile()) {
InputStream in = ftp.retrieveFileStream(f.getName());
zos.putNextEntry(new ZipEntry(getFileName(dirPath) + File.separator + f.getName()));
addToZOS(in, zos);
ftp.completePendingCommand();
} else {
if (ftp.changeWorkingDirectory(f.getName())) {
loadFile(ftp, dirPath + File.separator + f.getName(), zos);
// ftp指针移动到上一层
ftp.changeToParentDirectory();
}
}
}
}
/**
* 将文件夹中的 .替换为^^
* @param sb
* @return
*/
private static void replaceFileName(StringBuilder sb, String onepath) {
sb.replace(sb.indexOf(onepath), sb.indexOf(onepath) + onepath.length(), onepath.replaceAll("\.", "^^"));
}
/**
* 将文件夹路径中的 ^^ 替换成 .
* @param sb
* @return
*/
private static String getFileName(String sb) {
StringBuilder result = new StringBuilder(sb);
while (result.indexOf("^^") > -1) {
result.replace(result.indexOf("^^"), result.indexOf("^^") + 2, ".");
}
return result.toString();
}
/**
* 切换目录 返回切换的层级数
* @param sb
* @param ftp
* @return 切换的层级数
* @throws IOException
*/
private static int exchageDir(StringBuilder sb, FTPClient ftp) throws IOException {
// 计入进入的文件夹的次数，方便回退
int level = 0;
String[] pathes = sb.toString().split("/");
for (int i = 0, len = pathes.length; i < len; i++) {
String onepath = pathes[i];
if (onepath == null || "".equals(onepath.trim())) {
continue;
}
//文件排除
boolean flagDir = ftp.changeWorkingDirectory(onepath);
if (flagDir) {
level++;
if (onepath.contains(".")) {
//把文件夹中的.用^^代替
replaceFileName(sb, onepath);
}
logger.info("成功连接ftp目录：" + ftp.printWorkingDirectory());
} else {
logger.warn("连接ftp目录失败：" + ftp.printWorkingDirectory());
}
}
return level;
}
/**
* 处理单个文件和空文件夹的情况 处理了返回true 未处理返回false
* 注意：这里是指数组中给的路径直接是文件或者空文件夹的情况
* @param ftp
* @param path 需要压缩的文件（文件夹）路径（相对根）
* @param zos
* @return
* @throws IOException
*/
public static boolean delFile(FTPClient ftp, StringBuilder path, ZipOutputStream zos) throws IOException {
int times = exchageDir(path, ftp);
String fileRelativePaht = path.toString();
String[] split = fileRelativePaht.split("/");
// 是否处理过
boolean isDel = false;
//有父级目录
if (split != null && split.length > 0) {
String lastSegmeng = split[split.length - 1];
//path直接是文件
if (split[split.length - 1].contains(".")) {
zos.putNextEntry(new ZipEntry(fileRelativePaht));
addToZOS(ftp.retrieveFileStream(lastSegmeng), zos);
ftp.completePendingCommand();
isDel = true;
} else if (ftp.listFiles().length <= 0) {
// 空文件夹
zos.putNextEntry(new ZipEntry(fileRelativePaht + File.separator));
isDel = true;
}
// 如果被处理过（空文件夹或者直接给的文件的路径），退回到根路径（以免污染下次循环的ftp指针）
if (isDel) {
for (int i = 0; i < times; i++) {
ftp.changeToParentDirectory();
}
}
}
return isDel;
}
/**
* 添加文件到压缩流
* @param in 输入流（一般就直接是从FTP中获取的）
* @param zos 压缩输出流
* @throws IOException
*/
public static void addToZOS(InputStream in, ZipOutputStream zos) throws IOException {
byte[] buf = new byte[1024];
//BufferedOutputStream bzos = new BufferedOutputStream(zos);
try {
for (int len; (len = (in.read(buf))) != -1; ) {
zos.write(buf, 0 , len);
}
} catch (IOException e) {
System.out.println("流转换异常");
throw e;
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
System.out.println("关流异常");
e.printStackTrace();
}
}
}
}
public static FTPClient getFtpClient(String path) throws Exception {
String server = "127.0.0.1";
int port = 21;
String username = "test";
String password = "test";
// path = "/FTPStation/";
FTPClient ftpClient = connectServer(server, port, username, password, path);
return ftpClient;
}
/**
*
* @param server
* @param port
* @param username
* @param password
* @param path 连接的节点（相对根路径的文件夹）
* @return
*/
public static FTPClient connectServer(String server, int port, String username, String password, String path) throws IOException {
path = path == null ? "" : path;
FTPClient ftp = new FTPClient();
//下面四行代码必须要，而且不能改变编码格式，否则不能正确下载中文文件
// 如果使用serv-u发布ftp站点，则需要勾掉“高级选项”中的“对所有已收发的路径和文件名使用UTF-8编码”
ftp.setControlEncoding("GBK");
FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_NT);
conf.setServerLanguageCode("zh");
ftp.configure(conf);
// 判断ftp是否存在
ftp.connect(server, port);
ftp.setDataTimeout(2 * 60 * 1000);
if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) {
ftp.disconnect();
System.out.println(server + "拒绝连接");
}
//登陆ftp
boolean login = ftp.login(username, password);
if (logger.isDebugEnabled()) {
if (login) {
logger.debug("登陆FTP成功! ip: " + server);
} else {
logger.debug("登陆FTP失败! ip: " + server);
}
}
//根据输入的路径，切换工作目录。这样ftp端的路径就可以使用相对路径了
exchageDir(new StringBuilder(path), ftp);
return ftp;
}
public static void main(String[] args) throws Exception {
String[] paths = {"/CAD/你好.txt", "/CAD/1.第一层"};
String savePath = "e:/temp/zz.zip";
//连接到的节点
String rootDir = "/CAD";
FTPClient ftp = getFtpClient(rootDir);
zipFileByPaths(ftp, savePath, paths);
}
/**
* 多FTP路径压缩
* @param ftp
* @param savePath
* @param filePaths
* @throws Exception
*/
public static void zipFileByPaths(FTPClient ftp, String savePath, String[] filePaths) throws Exception {
try (ZipOutputStream zos = ZipUtils.getOutPutStream(savePath)) {
for (String path : filePaths) {
StringBuilder sb = new StringBuilder(path);
//delFile时进入的文件夹的路径（当前需要遍历的文件的路径）
String before = ftp.printWorkingDirectory();
if (delFile(ftp, sb, zos)) {
continue;
}
loadFile(ftp, sb.toString(), zos);
// 文件加载完毕后，需要将ftp的指针退到开始状态
String after = ftp.printWorkingDirectory();
backPath(before, after, ftp);
}
zos.flush();
} catch (Exception e) {
logger.error("多路径文件压缩失败");
e.printStackTrace();
throw e;
}
}
/**
* ftp 指针回退
* @param end
* @param start
* @param ftp
* @throws IOException
*/
private static void backPath(String end, String start, FTPClient ftp) throws IOException {
long startTime = System.currentTimeMillis();
do {
if (!end.equals(start) && ftp.changeToParentDirectory()) {
start = ftp.printWorkingDirectory();
}
// 防止意外出现空循环 30s等待时间
if (System.currentTimeMillis() - startTime > 30 * 1000) {
break;
}
} while (!end.equals(start));
}
}