Oracle UCM: Download Documents from UCM to your PC using RIDC

In this post I provide another functionality to download files from Content Server to your PC using RIDC.

Please note that Perform Documents Check-In using Remote IntraDoC (RIDC)  contains the prerequisite code since in this post I don't provide the full java code but just additions.

This is a simple code snippet that downloads a single file from Oracle UCM to your PC.

Add a new method to our already discussed UCMAdapter.java

public InputStream getFile(String username, String documentId) {
        ServiceResponse severiceResponse = null;
       
        try {
            IdcClient client = getIdcClient();
            DataBinder dataBinderReq = client.createBinder();
            dataBinderReq.putLocal("IdcService", "GET_FILE");
            dataBinderReq.putLocal("dID", documentId);

            severiceResponse = client.sendRequest(new IdcContext(username), dataBinderReq);
            InputStream is = severiceResponse.getResponseStream();
            System.out.println("GET_FILE size: " + is.available()); 
            return is;           
                               
        } catch(Exception ex) {
            System.out.println("Error GetFile(): " + ex.getMessage());               
        }
        return null;
}//-

Then recreate an empty file Main.java and paste this code:

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

public class Main {
   
    public static void main(String[] args) {
       
    //EDIT THESE VARIABLES
        //ID of the file to retrieve
        String docID="6231";
        //Where to download file
        String fileSaveLocation = "C:\\file.pdf";
        //User who performs file download
        String username = "weblogic";
    //   

        //Instanciate objects
         UCMAdapter ucm = new UCMAdapter();
         new Document();
        
         //Download file
         try
           {
           File f=new File(fileSaveLocation);
           InputStream inputStream= ucm.getFile(username, docID);
           OutputStream out=new FileOutputStream(f);
           byte buf[]=new byte[1024];
           int len;
           while((len=inputStream.read(buf))>0)
           out.write(buf,0,len);
           out.close();
           inputStream.close();
           System.out.println("\n File correctly created.");
           }
           catch (IOException e){
          System.out.println("\n Error creating file.");
          }
         
    }//
}//end class

Note that in the code above you need to set some variables.

docID = "6231"

Is the Document ID of the document we want to download to our PC. You can modify this code in a more elegant way which performs a document search and automatically retrieves Document ID of the file you need to download.

fileSaveLocation = "C:\\file.pdf"

Is the path where you download the file and which kind of file extension you are retrieving...this is a really basic code, you may need to introduce a more sophisticated feature like perform a check of file extension directly from Content Server and automatically set this variable using the appropriate file name and extension based on file extension readed from UCM.

Finally

username = "weblogic"

Is the username who performs file dowload.

That's all!!