create multiple files from zip file using java and pl sql

Hi all

I wrote the java code in oracle database 11 g 2 below.

DROP JAVA SOURCE SCOTT."CreateZip";

CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED SCOTT."CreateZip" 
as 
  import java.io.BufferedInputStream;
  import java.io.BufferedOutputStream;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.util.zip.Deflater;
  import java.util.zip.ZipEntry;
  import java.util.zip.ZipInputStream;
  import java.util.zip.ZipOutputStream;
  
  public class CreateZip 
  {  
    
    //public static final int BUFFER_SIZE = 4096;
    
    public static void Zip(String zipFileName, String zipEntries) throws IOException
    {
      
      //String strName = zipEntries;
      String[] srcFiles = new String[] {zipEntries};
      //String[] srcFiles = {zipEntries};
       
      try
      {
          byte[] buffer = new byte[4096];
          FileOutputStream fos = new FileOutputStream(zipFileName);
          ZipOutputStream zos = new ZipOutputStream(fos);        
      
          for (int i = 0; i < srcFiles.length; i++) 
          {
              File entryFile = new File(srcFiles[i]);
              FileInputStream fis = new FileInputStream(entryFile);
              zos.putNextEntry(new ZipEntry(entryFile.getName()));


              int length;
              
              while ((length = fis.read(buffer)) > 0)
              {
               zos.write(buffer, 0, length);
              }
              zos.closeEntry();
              // close the InputStream
              fis.close();
          }
          // close the ZipOutputStream
          zos.close();
      }
      catch (IOException e) 
      {
       e.printStackTrace();
      }
       
    }
    
    public static void UnZip(String zipFilePath, String destDirectory) throws IOException 
    {
     
     try
      {
       byte[] buffer = new byte[4096];   
       //create output directory is not exists
        File folder = new File(destDirectory);
        if(!folder.exists())
        {
            folder.mkdir();
        }
        //get the zip file content
        ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFilePath));
        //get the zipped file list entry
        ZipEntry ze = zis.getNextEntry();
        
        while(ze!=null)
        {
          String fileName = ze.getName();
          File newFile = new File(destDirectory + File.separator + fileName);
          //create all non exists folders
          //else you will hit FileNotFoundException for compressed folder
          new File(newFile.getParent()).mkdirs();
          FileOutputStream fos = new FileOutputStream(newFile);
          int len;
          while ((len = zis.read(buffer)) > 0)
             {
              fos.write(buffer, 0, len);
             }
             
          fos.close();   
          ze = zis.getNextEntry();
          
        }
        zis.closeEntry();
        zis.close();
      }
      catch (IOException e) 
      {
       e.printStackTrace();
      }
      
    }
    
    
  }
/

and the pl/sql wrapper is lower.

CREATE OR REPLACE PACKAGE SCOTT.CreateZip AS
PROCEDURE UnZip(Param1 VARCHAR2, Param2 VARCHAR2) 
AS
  LANGUAGE java 
    NAME 'CreateZip.UnZip(java.lang.String, java.lang.String)';


PROCEDURE Zip(Param1 VARCHAR2, Param2 VARCHAR2) 
AS
  LANGUAGE java 
    NAME 'CreateZip.Zip(java.lang.String, java.lang.String)';
end;
/

but my problem is to unzip code works file while the Zip function does not work.

I passing the path with file name as this to create the table in java in the Zip function

Zip('d:\EXCEL_ORACLE_DIR\Test.zip','d:\EXCEL_ORACLE_DIR\abc.txt,D:\EXCEL_ORACLE_DIR\abc.docx').

creates the zip file with the size of zero byte, where is the problem.

The problem is in line 26 because you split an array of String [] zipEntries...

Try this

String [] srcFiles = zipEntries.split(",");

You exception, but you don't know in plsql procedure...

Try to change your java method...

Tags: Database

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create multiple files from zip file using java and pl sql

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