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作者：朋也
日期：2019-09-03
类别：java学习笔记
版权声明：自由转载-非商用-非衍生-保持署名（创意共享3.0许可证）
整理一个zip的压缩/解压工具类
压缩
自定义添加文件打包
import java.io.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
public class ZipUtil {
/**
* 自定义添加文件生成zip包，zip包中没有目录结构
* <p>
* 用法：ZipUtil.zipFiles("/Users/hh/git/job/circle/tmp.zip",
* "/Users/hh/git/job/circle/tmp/aa.txt",
* "/Users/hh/Downloads/test_2.jpg",
* "/Users/hh/git/job/circle/tmp/bb.txt");
*
* @param zipFileName 全路径的zip文件包的名字
* @param files 要添加到zip包中的文件的全路径
*/
public static void zipFiles(String zipFileName, String... files) {
try {
byte[] buffer = new byte[1024];
File zipFile = new File(zipFileName);
FileOutputStream fos = new FileOutputStream(zipFile);
ZipOutputStream zos = new ZipOutputStream(new BufferedOutputStream(fos));
for (String file : files) {
File file1 = new File(file);
String fileName = file1.getName();
ZipEntry zipEntry = new ZipEntry(fileName);
zos.putNextEntry(zipEntry);
FileInputStream fis = new FileInputStream(file1);
int len;
while ((len = fis.read(buffer)) > 0) {
zos.write(buffer, 0, len);
}
fis.close();
}
zos.closeEntry();
zos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
对文件夹打zip包, 被压缩的文件夹里可以有多层文件夹
链接文原: https://atjiu.github.io/2019/09/03/java-zip/
/**
* 压缩文件夹
*
* @param zipFileName 全路径的zip文件包的名字
* @param dir 要压缩的文件夹的路径
*/
public static void zipDir(String zipFileName, String dir) {
try {
File zipFile = new File(zipFileName);
FileOutputStream fos = new FileOutputStream(zipFile);
ZipOutputStream zos = new ZipOutputStream(new BufferedOutputStream(fos));
File dirFile = new File(dir);
addEntry(dirFile, zos, "");
zos.closeEntry();
zos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
private static void addEntry(File file, ZipOutputStream zos, String root) throws IOException {
byte[] buffer = new byte[1024];
for (File file1 : file.listFiles()) {
System.out.println(file1.getName());
if (file1.isDirectory()) {
addEntry(file1, zos, file1.getName());
} else {
String fileName = file1.getName();
ZipEntry zipEntry = new ZipEntry(root + "/" + fileName);
zos.putNextEntry(zipEntry);
FileInputStream fis = new FileInputStream(file1);
int len;
while ((len = fis.read(buffer)) > 0) {
zos.write(buffer, 0, len);
}
fis.close();
}
}
}
解压
public static void unzip(String zipFilePath, String destDir) {
File dir = new File(destDir);
// create output directory if it doesn't exist
if (!dir.exists()) dir.mkdirs();
FileInputStream fis;
//buffer for read and write data to file
byte[] buffer = new byte[1024];
try {
fis = new FileInputStream(zipFilePath);
ZipInputStream zis = new ZipInputStream(fis);
ZipEntry ze = zis.getNextEntry();
while (ze != null) {
String fileName = ze.getName();
File newFile = new File(destDir + File.separator + fileName);
System.out.println("Unzipping to " + newFile.getAbsolutePath());
//create directories for sub directories in zip
new File(newFile.getParent()).mkdirs();
FileOutputStream fos = new FileOutputStream(newFile);
int len;
while ((len = zis.read(buffer)) > 0) {
fos.write(buffer, 0, len);
}
fos.close();
//close this ZipEntry
zis.closeEntry();
ze = zis.getNextEntry();
}
//close last ZipEntry
zis.closeEntry();
zis.close();
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}