使用Java压缩和解压缩文件夹和文件
问题描述:
如果我的应用程序想要以动态方式使用java压缩结果文件(文件组),Java中有哪些可用选项? 当我浏览我有java.util.zip包使用,但有没有其他方式,我可以用它来实现?使用Java压缩和解压缩文件夹和文件
答
public class FolderZiper {
public static void main(String[] a) throws Exception {
zipFolder("c:\\a", "c:\\a.zip");
}
static 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();
}
static 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);
}
}
}
static 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);
}
}
}
}
答
原始的Java实现已知有一些与文件编码相关的错误。例如,它不能用变音符号正确处理文件名。
TrueZIP是我们在项目中使用的替代方案:https://truezip.dev.java.net/ 查看网站上的文档。
答
的Java有一个java.util.zip.ZipInputStream中与此相伴,你可以使用ZipEntry的...像
public static void unZipIt(String zipFile, String outputFolder){
File folder = new File(zipFile);
List<String> files = listFilesForFolder(folder);
System.out.println("Size " + files.size());
byte[] buffer = new byte[1024];
try{
Iterator<String> iter = files.iterator();
while(iter.hasNext()){
String file = iter.next();
System.out.println("file name " + file);
ZipInputStream zis = new ZipInputStream(new FileInputStream(file));
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());
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();
ze = zis.getNextEntry();
}
zis.closeEntry();
zis.close();
System.out.println("Done");
}
}catch(IOException ex){
ex.printStackTrace();
}
}
http://devharbor.blogspot.com/2009/01/create-zip -archive-in-java.html 和google – ant
感谢您的代码 – gmhk