de/backend/src/main/java/io/dataease/commons/utils/ZipUtils.java
2021-05-11 16:30:21 +08:00

142 lines
4.7 KiB
Java

package io.dataease.commons.utils;
import java.io.*;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
public class ZipUtils {
/**
* 解压文件
*
* @param zipFilePath 解压文件路径
* @param outputFolder 输出解压文件路径
*/
public static void unZipIt(String zipFilePath, String outputFolder) {
byte[] buffer = new byte[1024];
File folder = new File(outputFolder);
if (!folder.exists()) {
folder.mkdir();
}
try {
//get the zip file content
ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFilePath));
ZipEntry ze = zis.getNextEntry();
while (ze != null) {
String fileName = ze.getName();
File newFile = new File(outputFolder + File.separator + fileName);
System.out.println("file unzip : " + newFile.getAbsoluteFile());
//大部分网络上的源码,这里没有判断子目录
if (ze.isDirectory()) {
if (!newFile.mkdirs()) {
System.out.println("was not successful.");
}
} else {
if (!new File(newFile.getParent()).mkdirs()) {
System.out.println("was not successful.");
}
FileOutputStream fos = new FileOutputStream(newFile);
int len;
while ((len = zis.read(buffer)) != -1) {
fos.write(buffer, 0, len);
}
fos.close();
}
ze = zis.getNextEntry();
}
zis.closeEntry();
zis.close();
System.out.println("Done");
} catch (IOException e) {
e.printStackTrace();
}
}
public static void unzip(File source, String out) throws IOException {
try (ZipInputStream zis = new ZipInputStream(new FileInputStream(source))) {
ZipEntry entry = zis.getNextEntry();
while (entry != null) {
File file = new File(out, entry.getName());
if (entry.isDirectory()) {
if (!file.mkdirs()) {
System.out.println("was not successful.");
}
} else {
File parent = file.getParentFile();
if (!parent.exists()) {
if (!parent.mkdirs()) {
System.out.println("was not successful.");
}
}
try (BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file))) {
byte[] buffer = new byte[Math.toIntExact(entry.getSize())];
int location;
while ((location = zis.read(buffer)) != -1) {
bos.write(buffer, 0, location);
}
}
}
entry = zis.getNextEntry();
}
}
}
/**
* 把所有文件都直接解压到指定目录(忽略子文件夹)
*
* @param zipFile
* @param folderPath
* @throws ZipException
* @throws IOException
*/
public static void upZipFile(File zipFile, String folderPath) throws ZipException, IOException {
File desDir = new File(folderPath);
if (!desDir.exists()) {
if (!desDir.mkdirs()) {
System.out.println("was not successful.");
}
}
ZipFile zf = new ZipFile(zipFile);
for (Enumeration<?> entries = zf.entries(); entries.hasMoreElements(); ) {
ZipEntry entry = ((ZipEntry) entries.nextElement());
InputStream in = zf.getInputStream(entry);
File desFile = new File(folderPath, java.net.URLEncoder.encode(entry.getName(), "UTF-8"));
if (!desFile.exists()) {
File fileParentDir = desFile.getParentFile();
if (!fileParentDir.exists()) {
if (!fileParentDir.mkdirs()) {
System.out.println("was not successful.");
}
}
}
OutputStream out = new FileOutputStream(desFile);
byte[] buffer = new byte[1024 * 1024];
int realLength = in.read(buffer);
while (realLength != -1) {
out.write(buffer, 0, realLength);
realLength = in.read(buffer);
}
out.close();
in.close();
}
}
}