cmd 7z 文件压缩
7z压缩测试
添加依赖
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-compress</artifactId>
<version>1.12</version>
</dependency>
<dependency>
<groupId>org.tukaani</groupId>
<artifactId>xz</artifactId>
<version>1.5</version>
</dependency>
ZipFileUtil
package com.vipsoft.web.utils;
import org.apache.commons.compress.archivers.sevenz.SevenZArchiveEntry;
import org.apache.commons.compress.archivers.sevenz.SevenZFile;
import org.apache.commons.compress.archivers.sevenz.SevenZOutputFile;
import java.io.*;
import java.util.HashMap;
import java.util.Map;
public class ZipFileUtil {
/**
* 7z文件压缩
*
* @param inputFile 待压缩文件夹/文件名
* @param outputFile 生成的压缩包名字
*/
public static void zip7z(String inputFile, String outputFile) throws Exception {
File input = new File(inputFile);
if (!input.exists()) {
throw new Exception(input.getPath() + "待压缩文件不存在");
}
SevenZOutputFile out = new SevenZOutputFile(new File(outputFile));
compress(out, input, null);
out.close();
}
/**
* @param name 压缩文件名，可以写为null保持默认
*/
//递归压缩
public static void compress(SevenZOutputFile out, File input, String name) throws IOException {
if (name == null) {
name = input.getName();
}
SevenZArchiveEntry entry = null;
//如果路径为目录（文件夹）
if (input.isDirectory()) {
//取出文件夹中的文件（或子文件夹）
File[] flist = input.listFiles();
if (flist.length == 0)//如果文件夹为空，则只需在目的地.7z文件中写入一个目录进入
{
entry = out.createArchiveEntry(input,name + "/");
out.putArchiveEntry(entry);
} else//如果文件夹不为空，则递归调用compress，文件夹中的每一个文件（或文件夹）进行压缩
{
for (int i = 0; i < flist.length; i++) {
compress(out, flist[i], name + "/" + flist[i].getName());
}
}
} else//如果不是目录（文件夹），即为文件，则先写入目录进入点，之后将文件写入7z文件中
{
FileInputStream fos = new FileInputStream(input);
BufferedInputStream bis = new BufferedInputStream(fos);
entry = out.createArchiveEntry(input, name);
out.putArchiveEntry(entry);
int len = -1;
//将源文件写入到7z文件中
byte[] buf = new byte[1024];
while ((len = bis.read(buf)) != -1) {
out.write(buf, 0, len);
}
bis.close();
fos.close();
out.closeArchiveEntry();
}
}
/**
* 7z解压缩
* @param z7zFilePath 7z文件的全路径
* @return 压缩包中所有的文件
*/
public static Map<String, String> unZip7z(String z7zFilePath){
String un7zFilePath = ""; //压缩之后的绝对路径
SevenZFile zIn = null;
try {
File file = new File(z7zFilePath);
un7zFilePath = file.getAbsolutePath().substring(0, file.getAbsolutePath().lastIndexOf(".7z"));
zIn = new SevenZFile(file);
SevenZArchiveEntry entry = null;
File newFile = null;
while ((entry = zIn.getNextEntry()) != null){
//不是文件夹就进行解压
if(!entry.isDirectory()){
newFile = new File(un7zFilePath, entry.getName());
if(!newFile.exists()){
new File(newFile.getParent()).mkdirs(); //创建此文件的上层目录
}
OutputStream out = new FileOutputStream(newFile);
BufferedOutputStream bos = new BufferedOutputStream(out);
int len = -1;
byte[] buf = new byte[(int)entry.getSize()];
while ((len = zIn.read(buf)) != -1){
bos.write(buf, 0, len);
}
bos.flush();
bos.close();
out.close();
}
}
} catch (Exception e) {
e.printStackTrace();
}finally {
try {
if (zIn != null)
zIn.close();
} catch (IOException e) {
e.printStackTrace();
}
}
Map<String, String> resultMap = getFileNameList(un7zFilePath, "");
return resultMap;
}
/**
* 获取压缩包中的全部文件
* @param path 文件夹路径
* @childName 每一个文件的每一层的路径==D==区分层数
* @return 压缩包中所有的文件
*/
private static Map<String, String> getFileNameList(String path, String childName) {
System.out.println("path:" + path + "---childName:"+childName);
Map<String, String> files = new HashMap<>();
File file = new File(path); // 需要获取的文件的路径
String[] fileNameLists = file.list(); // 存储文件名的String数组
File[] filePathLists = file.listFiles(); // 存储文件路径的String数组
for (int i = 0; i < filePathLists.length; i++) {
if (filePathLists[i].isFile()) {
files.put(fileNameLists[i] + "==D==" + childName, path + File.separator + filePathLists[i].getName());
} else {
files.putAll(getFileNameList(path + File.separator + filePathLists[i].getName(), childName + "&" + filePathLists[i].getName()));
}
}
return files;
}
}
Test
package com.vipsoft.web;
import com.vipsoft.web.utils.ZipFileUtil;
import org.junit.jupiter.api.Test;
public class ZipTest {
@Test
void zip7zTest() throws Exception {
String inputPath = "D:\\temp\\logs\\logs";
String outputPath = "D:\\temp\\logs\\1.7z";
ZipFileUtil.zip7z(inputPath, outputPath);
}
@Test
void unZip7zTest() throws Exception {
String outputPath = "D:\\temp\\logs\\1.7z";
ZipFileUtil.unZip7z(outputPath);
}
}
