在java中将流式文件写入zip流

Question

I want to write multiple CSVs generated from different tables to a zip file without having a read/write operation required to store the generated CSV files or the generated zip files to a memory .

This zip I need to send as an output stream to a response. Is this possible to do in Java? If yes, then how? I am using OpenCSV library to generate CSVs .

Answer 1

1. create a GZIPOutputStream
2. loop over your csv data units:
   • open an InputStream for the csv data unit
   • read it, write it to GZIPOutputStream
   • close InputStream
3. close GZIPOutputStream

If you are working with a servlet, you can wrap ServletOutputStream with GZIPOutputStream . If you like, I can give you more information on that.