zipparameters使用_JAVA利用Zip4j解压缩【转】

一、压缩

1、标准压缩

ZipFile zipFile &＃61; new ZipFile("c:\\date.zip");

ArrayList filesToAdd&＃61; newArrayList();

filesToAdd.add(newFile(csvFilePath));

ZipParameters parameters&＃61; newZipParameters();

parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);

parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);

//设置密码

parameters.setEncryptFiles(true);

parameters.setEncryptionMethod(Zip4jConstants.ENC_METHOD_STANDARD);

parameters.setPassword("123456");

zipFile.addFiles(filesToAdd, parameters);

2、AES加密

ZipFile zipFile &＃61; new ZipFile("c:\\ZipTest\\test3.zip");

ArrayList filesToAdd&＃61; newArrayList();

filesToAdd.add(new File("c:\\ZipTest\\sample.txt"));

ZipParameters parameters&＃61; newZipParameters();

parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);

parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);//设置密码

parameters.setEncryptFiles(true);

parameters.setEncryptionMethod(Zip4jConstants.ENC_METHOD_AES);

parameters.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256);

parameters.setPassword("123456!");

zipFile.addFiles(filesToAdd, parameters);

3、文件夹压缩

ZipFile zipFile &＃61; new ZipFile("c:\\ZipTest\\test4.zip");

String folderToAdd&＃61; "c:\\ZipTest";

ZipParameters parameters&＃61; newZipParameters();

parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);

parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);

zipFile.addFolder(folderToAdd, parameters);

4、将文件压缩到指定文件夹中

ZipFile zipFile &＃61; new ZipFile("c:\\ZipTest\\test5.zip");

ArrayList filesToAdd&＃61; newArrayList();

filesToAdd.add(new File("c:\\ZipTest\\sample.txt"));

ZipParameters parameters&＃61; newZipParameters();

parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);

parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);

parameters.setRootFolderInZip("test2/");

zipFile.addFiles(filesToAdd, parameters);

5、向ZIP中添加文件

ZipFile zipFile &＃61; new ZipFile("c:\\ZipTest\\test1.zip");

ZipParameters parameters&＃61; newZipParameters();

parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);

parameters.setFileNameInZip("文件2.doc");

parameters.setSourceExternalStream(true);

InputStream is&＃61; new FileInputStream("c:\\ZipTest\\文件2.doc");

zipFile.addStream(is, parameters);

is.close();

6、分隔压缩文件

ZipFile zipFile &＃61; new ZipFile("c:\\ZipTest\\test7.zip");

ArrayList filesToAdd&＃61; newArrayList();

filesToAdd.add(new File("c:\\ZipTest\\sample.txt"));

ZipParameters parameters&＃61; newZipParameters();

parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);

parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);

zipFile.createZipFile(filesToAdd, parameters,true, 65536);

7、创建ZIP流

ArrayList filesToAdd &＃61; newArrayList();

filesToAdd.add(new File("c:\\ZipTest\\sample.txt"));

ZipOutputStream outputStream&＃61; new ZipOutputStream(new FileOutputStream(new File("c:\\ZipTest\\test8.zip")));

ZipParameters parameters&＃61; newZipParameters();

parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);

parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);//Set password

parameters.setEncryptFiles(true);

parameters.setEncryptionMethod(Zip4jConstants.ENC_METHOD_AES);

parameters.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256);

parameters.setPassword("test123!");for (int i &＃61; 0; i

File file&＃61;(File)filesToAdd.get(i);

outputStream.putNextEntry(file,parameters);if(file.isDirectory()) {

outputStream.closeEntry();continue;

}

InputStream inputStream&＃61; newFileInputStream(file);byte[] readBuff &＃61; new byte[4096];int readLen &＃61; -1;while ((readLen &＃61; inputStream.read(readBuff)) !&＃61; -1) {

outputStream.write(readBuff,0, readLen);

}

outputStream.closeEntry();

inputStream.close();

}

outputStream.finish();

outputStream.close();

8、从ZIP中删除文件

ZipFile zipFile &＃61; new ZipFile("c:\\ZipTest\\test1.zip");//删除指定文件

zipFile.removeFile("sample.txt");//删除第一个文件

if (zipFile.getFileHeaders() !&＃61; null && zipFile.getFileHeaders().size() > 0) {

zipFile.removeFile((FileHeader)zipFile.getFileHeaders().get(0));

}else{

System.out.println("This cannot be demonstrated as zip file does not have any files left");

}

9、获取ZIP中文件一览

ZipFile zipFile &＃61; new ZipFile("c:\\ZipTest\\test5.zip");

List fileHeaderList&＃61;zipFile.getFileHeaders();for (int i &＃61; 0; i

FileHeader fileHeader&＃61;(FileHeader)fileHeaderList.get(i);

System.out.println("****File Details for: " &＃43; fileHeader.getFileName() &＃43; "*****");

System.out.println("Name: " &＃43;fileHeader.getFileName());

System.out.println("Compressed Size: " &＃43;fileHeader.getCompressedSize());

System.out.println("Uncompressed Size: " &＃43;fileHeader.getUncompressedSize());

System.out.println("CRC: " &＃43;fileHeader.getCrc32());

System.out.println("************************************************************");

}

二、解压

1、解压所有文件

//方法一

ZipFile zipFile &＃61; new ZipFile("c:\\ZipTest\\test1.zip");

zipFile.extractAll("c:\\ZipTest1");//方法二

ZipFile zipFile2 &＃61; new ZipFile("c:\\ZipTest\\test2.zip");if(zipFile2.isEncrypted()) {

zipFile2.setPassword("test123!");

}

List fileHeaderList&＃61;zipFile2.getFileHeaders();for (int i &＃61; 0; i

FileHeader fileHeader&＃61;(FileHeader)fileHeaderList.get(i);

zipFile2.extractFile(fileHeader,"c:\\ZipTest2\\");

}

2、解压所有文件到流

ZipFile zipFile &＃61; new ZipFile("c:\\ZipTest\\test2.zip");if(zipFile.isEncrypted()) {

zipFile.setPassword("test123!");

}

List fileHeaderList&＃61;zipFile.getFileHeaders();for (int i &＃61; 0; i

FileHeader fileHeader&＃61;(FileHeader)fileHeaderList.get(i);if (fileHeader !&＃61; null) {

String outFilePath&＃61; "c:\\ZipTest3\\" &＃43; System.getProperty("file.separator") &＃43;fileHeader.getFileName();

File outFile&＃61; newFile(outFilePath);if(fileHeader.isDirectory()) {

outFile.mkdirs();continue;

}

File parentDir&＃61;outFile.getParentFile();if (!parentDir.exists()) {

parentDir.mkdirs();

}

ZipInputStream is&＃61;zipFile.getInputStream(fileHeader);

OutputStream os&＃61; newFileOutputStream(outFile);int readLen &＃61; -1;byte[] buff &＃61; new byte[4096];while ((readLen &＃61; is.read(buff)) !&＃61; -1) {

os.write(buff,0, readLen);

}

os.close();

os&＃61; null;

is.close();

is&＃61; null;

UnzipUtil.applyFileAttributes(fileHeader, outFile);

System.out.println("Done extracting: " &＃43;fileHeader.getFileName());

}else{

System.err.println("fileheader is null. Shouldn&＃39;t be here");

}

}

3、解压单个文件

ZipFile zipFile &＃61; new ZipFile("c:\\ZipTest\\test2.zip");if(zipFile.isEncrypted()) {

zipFile.setPassword("test123!");

}

zipFile.extractFile("文件.doc", "c:\\ZipTest4\\");