Error decompressing a gzip file in linux

Question

I am creating a standalone java application that will decompress a tar.gz into .tar file.

GZIPInputStream gZIPInputStream = new GZIPInputStream(is);

FileOutputStream fos = new FileOutputStream(tarFile);
byte[] buffer = new byte[2048];
int len;
while((len = gZIPInputStream.read(buffer)) > 0){
    fos.write(buffer, 0, len);
}

fos.close();
gZIPInputStream.close();

The below code works fine when running in eclipse but when I create a runnable jar and made it to run in Linux server its throwing the below error.

java.util.zip.ZipException: invalid code lengths set
        at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:164)
        at java.util.zip.GZIPInputStream.read(GZIPInputStream.java:117)
        at java.io.FilterInputStream.read(FilterInputStream.java:107)
        at com.bcs.wiposcrape.service.WipoDataServiceImpl.deCompressGZipFile(WipoDataServiceImpl.java:218)
        at com.bcs.wiposcrape.service.WipoDataServiceImpl.unZipFTPFiles(WipoDataServiceImpl.java:126)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:206)
        at com.sun.proxy.$Proxy33.unZipFTPFiles(Unknown Source)
        at com.bcs.wiposcrape.launch.WipoScrape.scrapeLaunch(WipoScrape.java:56)
        at com.bcs.wiposcrape.launch.WipoScrape.main(WipoScrape.java:22)

The error is actually throwing from the 5th line of code snippet. Can someone please help me identify the real problem? Any help would be really appreciated.

That's very strange. That message comes from native code, in zlib. Make sure you're reading the same data. I suspect you are not. — David Conrad, Jun 20 '18 at 13:51
@DavidConrad Yes I understood the actual issue. The tar.gz file is actually downloaded from an FTP server. The file is corrupted while downloading from FTP to linux. — MPK, Jun 20 '18 at 14:04
I see. Note that you may need to set the FTP connection to binary; if it is set to text it will certainly corrupt the file. — David Conrad, Jun 20 '18 at 14:06
@DavidConrad Yes I did and now its working fine. Many thanks for the response. — MPK, Jun 20 '18 at 14:10

Error decompressing a gzip file in linux

0 Answers0