public static int ZipCopyFile2Zip(
ZipFile fromZipFile, String fromFile, ZipFile toZipFile, String toFile) {
int retint = 0;
ZipInputStream is = null;
try {
// Get the FileHeader of the File you want to extract from the
// zip file. Input for the below method is the name of the file
// For example: 123.txt or abc/123.txt if the file 123.txt
// is inside the directory abc
FileHeader fileHeader = fromZipFile.getFileHeader(fromFile);
if (fileHeader != null) {
// Get the InputStream from the ZipFile
is = fromZipFile.getInputStream(fileHeader);
AddStreamToZip(toZipFile, is, toFile);
retint++;
} else {
System.err.println(" !!未找到：" + fromFile + "@" + fromZipFile.getFile().getName());
retint = -1;
}
} catch (Exception e) {
e.printStackTrace();
retint = -1;
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return retint;
}
public void ExtractSelectFilesWithInputStream(
String zipFileName, String fileName, String destinationPath) {
ZipInputStream is = null;
OutputStream os = null;
try {
// Initiate the ZipFile
ZipFile zipFile = new ZipFile(zipFileName);
// String destinationPath = "c:\\ZipTest";
// If zip file is password protected then set the password
if (zipFile.isEncrypted()) {
zipFile.setPassword("password");
}
// Get the FileHeader of the File you want to extract from the
// zip file. Input for the below method is the name of the file
// For example: 123.txt or abc/123.txt if the file 123.txt
// is inside the directory abc
FileHeader fileHeader = zipFile.getFileHeader(fileName);
if (fileHeader != null) {
// Build the output file
String outFilePath =
destinationPath + System.getProperty("file.separator") + fileHeader.getFileName();
File outFile = new File(outFilePath);
// Checks if the file is a directory
if (fileHeader.isDirectory()) {
// This functionality is up to your requirements
// For now I create the directory
outFile.mkdirs();
return;
}
// Check if the directories(including parent directories)
// in the output file path exists
File parentDir = outFile.getParentFile();
if (!parentDir.exists()) {
parentDir.mkdirs(); // If not create those directories
}
// Get the InputStream from the ZipFile
is = zipFile.getInputStream(fileHeader);
// Initialize the output stream
os = new FileOutputStream(outFile);
int readLen = -1;
byte[] buff = new byte[BUFF_SIZE];
// Loop until End of File and write the contents to the output
// stream
while ((readLen = is.read(buff)) != -1) {
os.write(buff, 0, readLen);
}
// Closing inputstream also checks for CRC of the the just
// extracted file.
// If CRC check has to be skipped (for ex: to cancel the unzip
// operation, etc)
// use method is.close(boolean skipCRCCheck) and set the flag,
// skipCRCCheck to false
// NOTE: It is recommended to close outputStream first because
// Zip4j throws
// an exception if CRC check fails
is.close();
// Close output stream
os.close();
// To restore File attributes (ex: last modified file time,
// read only flag, etc) of the extracted file, a utility class
// can be used as shown below
UnzipUtil.applyFileAttributes(fileHeader, outFile);
System.out.println("Done extracting: " + fileHeader.getFileName());
} else {
System.err.println("FileHeader does not exist-->" + fileName);
}
} catch (Exception e) {
e.printStackTrace();
}
}