How do I pack an ISO 8583 message?

The code snippet below show you how to pack an ISO 8583 message.

package org.kodejava.example.jpos;

import org.jpos.iso.ISOException;
import org.jpos.iso.ISOMsg;
import org.jpos.iso.packager.GenericPackager;

import java.io.InputStream;

public class PackISOMessage {
    public static void main(String[] args) {
        PackISOMessage iso = new PackISOMessage();
        try {
            String message = iso.buildISOMessage();
            System.out.printf("Message = %s", message);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private String buildISOMessage() throws Exception {
        try {
            // Load package from resources directory.
            InputStream is = getClass().getResourceAsStream("/fields.xml");
            GenericPackager packager = new GenericPackager(is);

            ISOMsg isoMsg = new ISOMsg();
            isoMsg.setPackager(packager);
            isoMsg.setMTI("0200");

            isoMsg.set(3, "000010");
            isoMsg.set(4, "1500");
            isoMsg.set(7, "1206041200");
            isoMsg.set(11, "000001");
            isoMsg.set(41, "12340001");
            isoMsg.set(49, "840");
            printISOMessage(isoMsg);

            byte[] result = isoMsg.pack();
            return new String(result);
        } catch (ISOException e) {
            throw new Exception(e);
        }
    }

    private void printISOMessage(ISOMsg isoMsg) {
        try {
            System.out.printf("MTI = %s%n", isoMsg.getMTI());
            for (int i = 1; i <= isoMsg.getMaxField(); i++) {
                if (isoMsg.hasField(i)) {
                    System.out.printf("Field (%s) = %s%n", i, isoMsg.getString(i));
                }
            }
        } catch (ISOException e) {
            e.printStackTrace();
        }
    }
}

When you run the program you’ll get the following output:

MTI = 0200
Field (3) = 000010
Field (4) = 1500
Field (7) = 1206041200
Field (11) = 000001
Field (41) = 12340001
Field (49) = 840
Message = 02003220000000808000000010000000001500120604120000000112340001840

The xml packager (fields.xml) can be downloaded from the following link: fields.xml.

Maven Dependency

<!-- http://repo1.maven.org/maven2/org/jpos/jpos/2.0.10/jpos-2.0.10.jar -->
<dependency>
    <groupId>org.jpos</groupId>
    <artifactId>jpos</artifactId>
    <version>2.0.10</version>
</dependency>

Wayan Saryada

Programmer, runner, recreational diver, currently living in the island of Bali, Indonesia. Mostly programming in Java, creating web based application with Spring Framework, Hibernate / JPA.

5 Comments

  1. I get error:

    at com.mycompany.mavenproject2.PackISOMessage.buildISOMessage(PackISOMessage.java:46)
        at com.mycompany.mavenproject2.PackISOMessage.main(PackISOMessage.java:19)
    
    Reply
    • java.lang.Exception: org.jpos.iso.ISOException: java.net.MalformedURLException (java.net.MalformedURLException)
          at com.mycompany.mavenproject2.PackISOMessage.buildISOMessage(PackISOMessage.java:46)
          at com.mycompany.mavenproject2.PackISOMessage.main(PackISOMessage.java:19)
      Caused by: org.jpos.iso.ISOException: java.net.MalformedURLException (java.net.MalformedURLException)
      
      Reply
    • Hi Tony,

      I think the error because it cannot find the fields.xml file. I am using Maven, in this case I place the fields.xml file inside the resources directory (src/main/resources/fields.xml).

      Instead of loading the packager file as a resource you can also do something like this:

      String filename = "D:/jpos/fields.xml";
      GenericPackager packager = new GenericPackager(filename);
      
      Reply
  2. I created a project named mavenproject2 and placed the fields.xml in cfg/packager but the error still there.

    InputStream is = getClass().getResourceAsStream(“mavenproject2/cfg/packager/fields.xml”);
    GenericPackager packager = new GenericPackager(is);

    Reply

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