Solved

"Invalid Block Type" exception message

Posted on 2006-11-16
9
766 Views
Last Modified: 2008-03-17
I got "Invalid Block Type" exception message in my program. I'm not sure what this is. Could somebody please advice?

The code is actually fine when I run it in my local machine (windows).
It retrieves the data just fine.
But when I run it in the server (linux), it gives me this exception.

Thanks.

-----------------------------------------------------------------------------------------------------

GZIPInputStream gzip_in_stream = null;
BufferedOutputStream destination_out_stream = new BufferedOutputStream(
   new FileOutputStream(weatherFile), BUF_SIZE);
   byte[] input_buffer = new byte[BUF_SIZE];
int byteLength = 0;            
 
InputStream tempStream = ftpClient.retrieveFileStream(zippedFile);
                  
gzip_in_stream = new GZIPInputStream(
new BufferedInputStream(tempStream));

while ( (byteLength = gzip_in_stream.read(input_buffer, 0, BUF_SIZE)) > 0 )
{
destination_out_stream.write(input_buffer, 0, byteLength);      
}
 
destination_out_stream.flush(); // Ensure all the data is written to the output.
destination_out_stream.close();
gzip_in_stream.close();      

0
Comment
Question by:rnicholus
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 4
9 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 17961190
Try

while ( (byteLength = gzip_in_stream.read(input_buffer, 0, BUF_SIZE)) > -1 )
0
 

Author Comment

by:rnicholus
ID: 17961306
It gives me:

"incomplete dynamic bit lengths tree"
0
 
LVL 86

Accepted Solution

by:
CEHJ earned 300 total points
ID: 17961329
Make sure the file is not corrupt by running zcat or something against it
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:rnicholus
ID: 17966257
I do "zcat [filename]" and then it prints the contents of the file in the console and it doesn't give me any warning or error.
I've never used zcat before. Is this what supposed to happen?

Thanks
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 17966270
Yep. I think you can safely take it that the file's not corrupt from that. No further ideas at the moment although you might check that this is not a known bug
0
 

Author Comment

by:rnicholus
ID: 17967413
Now it gives me "corrupt gzip trailer" on these lines below.

------------------------------
while ( (byteLength = gzip_in_stream.read(input_buffer, 0, BUF_SIZE)) > 0 )
{System.out.println("** test **");
destination_out_stream.write(input_buffer, 0, byteLength);      
}
------------------------------

It seems that it goes inside the while loop printing the String "** test **" before it gives me the error message "corrupt gzip trailer".
0
 

Author Comment

by:rnicholus
ID: 17967723
I've also tried using ">-1" instead of ">0".

Also I've tried using zcat again.
0
 

Author Comment

by:rnicholus
ID: 18072774
Doing these below seem to solve the problem:

ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);

I will give points for CEHJ for the assistance in finding the answer.
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 18075994
:-)
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
SHA2 certs for IIS AND Java? 2 134
Why is enum singleton a better approach than static factory 3 64
junit example issue 2 52
Html split(text) 2 45
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…
Viewers learn how to read error messages and identify possible mistakes that could cause hours of frustration. Coding is as much about debugging your code as it is about writing it. Define Error Message: Line Numbers: Type of Error: Break Down…
Suggested Courses

738 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question