如何在 Java 中压缩目录的内容 [英] How to zip the content of a directory in Java
问题描述
我在 java 下面使用,但是当它压缩时,它会创建一个目录并将该目录中的所有内容压缩.例如.如果我有一个名为Directory"的文件夹并且我想将内容压缩到一个压缩文件中,则在压缩文件中它会创建一个文件夹 testZip 并在其中包含文件.我需要压缩文件中的所有文件,而不是父目录中的所有文件.请帮忙.或建议是否有任何其他方式.
I am using below java, but when it zips, it creates a directory and zips all contents inside that directory. For ex. if I have a folder named 'Directory' and I want to zip the content to a Zipped file, inside the zipped file it creates a folder testZip and have files inside that. I need all files inside the zipped file, not inside a parent directory. Please help. or suggest if there is any other way.
package folderZip;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class ZipFolder {
public ZipFolder() {
}
public static void main(String[] args) throws Exception {
ZipFolder obj = new ZipFolder();
obj.zipFolder("C:\\Drive\\temp\\testZip","C:\\Drive\\temp\\FolderZiper.zip");
}
public void zipFolder(String srcFolder,
String destZipFile) throws Exception {
ZipOutputStream zip = null;
FileOutputStream fileWriter = null;
fileWriter = new FileOutputStream(destZipFile);
zip = new ZipOutputStream(fileWriter);
addFolderToZip("", srcFolder, zip);
zip.flush();
zip.close();
}
private void addFileToZip(String path, String srcFile,
ZipOutputStream zip) throws Exception {
File folder = new File(srcFile);
if (folder.isDirectory()) {
addFolderToZip(path, srcFile, zip);
} else {
byte[] buf = new byte[1024];
int len;
FileInputStream in = new FileInputStream(srcFile);
zip.putNextEntry(new ZipEntry(path + "/" + folder.getName()));
while ((len = in.read(buf)) > 0) {
zip.write(buf, 0, len);
}
}
}
private void addFolderToZip(String path, String srcFolder,
ZipOutputStream zip) throws Exception {
File folder = new File(srcFolder);
for (String fileName : folder.list()) {
if (path.equals("")) {
addFileToZip(folder.getName(), srcFolder + "/" + fileName,
zip);
} else {
addFileToZip(path + "/" + folder.getName(),
srcFolder + "/" + fileName, zip);
}
}
}
}
推荐答案
所以,如果我理解正确的话,您想要的是,而不是出现在 Zip 文件中的目标文件夹,其中的所有文件都应以/" 在 Zip 文件中.
So, if I understand correctly, what you want is, instead of the target folder appearing in the Zip file, all the files within it should start at "/" in the Zip file.
例如,如果你有
FolderToZip/
TestFile1.txt
TestFile2.txt
TestFile3.txt
SomeSubFolder/
TestFile4.txt
TestFile5.txt
TestFile6.txt
Zip 文件的内容应包含
The contents of the Zip file should contain
TestFile1.txt
TestFile2.txt
TestFile3.txt
SomeSubFolder/
TestFile4.txt
TestFile5.txt
TestFile6.txt
为此,您需要保留对start"文件夹的引用,并将其路径从您添加的文件中删除,以创建 ZipEntry
.
To do this, you need to keep a reference to the "start" folder and strip it's path off the files you are adding, to create the ZipEntry
.
为简单起见,我更改了您的代码以支持 File
而不是 String
,它只是让整个事情变得不那么混乱.
For simplicity, I changed your code to support File
instead of String
, it just makes the whole thing a lot less messy.
但魔法出现在这里...
But the magic appears here...
FileInputStream in = new FileInputStream(srcFile);
String name = srcFile.getPath();
name = name.replace(rootPath.getPath(), "");
System.out.println("Zip " + srcFile + "\n to " + name);
zip.putNextEntry(new ZipEntry(name));
rootPath
是初始文件夹(在您的示例中为 C:\\Drive\\temp\\testZip"
),srcFile
是要添加的文件.
rootPath
is the initial folder (C:\\Drive\\temp\\testZip"
in your example), srcFile
is the file to be added.
可运行示例...
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
public class ZipFolder {
public ZipFolder() {
}
public static void main(String[] args) throws Exception {
ZipFolder obj = new ZipFolder();
obj.zipFolder(new File("/Users/shanewhitehead/exports"),
new File("FolderZiper.zip"));
}
public void zipFolder(File srcFolder, File destZipFile) throws Exception {
try (FileOutputStream fileWriter = new FileOutputStream(destZipFile);
ZipOutputStream zip = new ZipOutputStream(fileWriter)) {
addFolderToZip(srcFolder, srcFolder, zip);
}
}
private void addFileToZip(File rootPath, File srcFile, ZipOutputStream zip) throws Exception {
if (srcFile.isDirectory()) {
addFolderToZip(rootPath, srcFile, zip);
} else {
byte[] buf = new byte[1024];
int len;
try (FileInputStream in = new FileInputStream(srcFile)) {
String name = srcFile.getPath();
name = name.replace(rootPath.getPath(), "");
System.out.println("Zip " + srcFile + "\n to " + name);
zip.putNextEntry(new ZipEntry(name));
while ((len = in.read(buf)) > 0) {
zip.write(buf, 0, len);
}
}
}
}
private void addFolderToZip(File rootPath, File srcFolder, ZipOutputStream zip) throws Exception {
for (File fileName : srcFolder.listFiles()) {
addFileToZip(rootPath, fileName, zip);
}
}
}
我还使用 try-with-resources 清理了您的资源管理
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