javamission.com

JAX-WS Web Service :

Calling a Web Service from another Web Service

In the bellow code sample i used two web services.First web service performs credit card processing.Second web service checks credit history and generates credit socre.The credit card processing web service is using second web service credit score for processing credit line.

Here credit card processing web service is the Caller Web Service and the second web service is the calee web service

Bellow is the code Caller Web Service

Source code: Binding Class for Calle Web Service

package com.javamisson.ws;

import com.javamission.ws.CreditHistoryCheckupWSService;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;
import javax.xml.ws.WebServiceRef;

/**
 *
 * @author Murali
 */
@WebService()
public class CreditCardProcessing {

    @WebServiceRef(wsdlLocation = "http://localhost:8080/WebServiceCodeSample03/CreditHistoryCheckupWSService?wsdl")
    private CreditHistoryCheckupWSService service;

    /**
     * Web service operation
     */
    @WebMethod(operationName = "applyForCreditLine")
    public Integer registration(@WebParam(name = "firstName") String firstName, @WebParam(name = "middleName") String middleName, @WebParam(name = "lastName") String lastName, @WebParam(name = "ssn") String ssn, @WebParam(name = "driversLicense") String driversLicense, @WebParam(name = "appliedCreditLine") Integer appliedCreditLine, @WebParam(name = "citigenship") String citigenship, @WebParam(name = "contactNumber") String contactNumber, @WebParam(name = "billingAddress") String billingAddress) {

        int creditScore = 0;
        int approvedCreditLine=0;

        // Call Other Web Service from a Web Service 
        // Here I am calling CreditHistory Checkup Web Service
        try { 

            com.javamission.ws.CreditHistoryCheckupWS port = service.getCreditHistoryCheckupWSPort();
       
            creditScore =  port.getCreditScore(firstName, middleName, lastName, ssn, driversLicense);
          
        } catch (Exception ex) {
            // TODO handle custom exceptions here
        }

        if( creditScore <=400)
            approvedCreditLine = (int)( appliedCreditLine*0.5); // approve 60% of applied credit line
        else if( creditScore <=500)
            approvedCreditLine = (int)( appliedCreditLine*0.6); // approve 70% of applied credit line
        else if( creditScore <=600)
            approvedCreditLine = (int)( appliedCreditLine*0.8); // approve 80% of applied credit line
        else if( creditScore <=700)
            approvedCreditLine = (int)( appliedCreditLine*0.9); // approve 90% of applied credit line
        else if( creditScore <=600)
            approvedCreditLine =appliedCreditLine ; // approve 100 of applied credit line
     

        // if the creditScore is less than 400 points No credit line is approved so the credit line is 0

        return approvedCreditLine;


    }
}

WSDL for Caller Web Service:

<!--
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!-- Generated by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.1.3.1-hudson-417-SNAPSHOT. -->
<definitions targetNamespace="http://ws.javamisson.com/" name="CreditCardProcessingService" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:tns="http://ws.javamisson.com/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
  <types>
    <xsd:schema>
      <xsd:import namespace="http://ws.javamisson.com/" schemaLocation="CreditCardProcessingService_schema1.xsd"/>
    </xsd:schema>
  </types>
  <message name="applyForCreditLine">
    <part name="parameters" element="tns:applyForCreditLine"/>
  </message>
  <message name="applyForCreditLineResponse">
    <part name="parameters" element="tns:applyForCreditLineResponse"/>
  </message>
  <portType name="CreditCardProcessing">
    <operation name="applyForCreditLine">
      <input message="tns:applyForCreditLine"/>
      <output message="tns:applyForCreditLineResponse"/>
    </operation>
  </portType>
  <binding name="CreditCardProcessingPortBinding" type="tns:CreditCardProcessing">
    <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/>
    <operation name="applyForCreditLine">
      <soap:operation soapAction=""/>
      <input>
        <soap:body use="literal"/>
      
      <output>
        <soap:body use="literal"/>
      </output>
    </operation>
  </binding>
  <service name="CreditCardProcessingService">
    <port name="CreditCardProcessingPort" binding="tns:CreditCardProcessingPortBinding">
      <soap:address location="REPLACE_WITH_ACTUAL_URL"/>
    </port>
  </service>
</definitions>


-->

Bellow is the source code for Calee Web Service

Source Code: Binding Class

package com.javamission.ws;

import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;
import java.util.Random;

/**
 *
 * @author Murali
 */
@WebService()
public class CreditHistoryCheckupWS {

    /**
     * Web service operation
     */
    @WebMethod(operationName = "getCreditScore")
    public Integer operation(@WebParam(name = "firstName")
    String firstName, @WebParam(name = "middleName")
    String middleName, @WebParam(name = "lastName")
    String lastName, @WebParam(name = "ssn")
    String ssn, @WebParam(name = "driverseLicense")
    String driverseLicense) {
        Random dummyScore = new Random();
        /////////////////////////////////////////////////////////////
//    NOTE :  
//        To make the code sample simple I used 
//        random number generator to generate 
//        Some dummy Score                                                        
//        /////////////////////////////////////////////////////////////
        dummyScore.setSeed(100);
        
        if( dummyScore.nextInt()<= 100)
            return 100;
        else if( dummyScore.nextInt()<= 200)
            return 200;
        else if( dummyScore.nextInt()<= 300)
            return 300;
        else if( dummyScore.nextInt()<= 400)
            return 400;        
        else if( dummyScore.nextInt()<= 500)
            return 500;
        else if( dummyScore.nextInt()<= 600)
            return 600;
        else if( dummyScore.nextInt()<= 700)
            return 700;        
        else 
            return 800;        

    }

}

WSDL for calee :CreditHistoryCheckupWSService.wsdl

<!--
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!-- Generated by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.1.3.1-hudson-417-SNAPSHOT. -->
<definitions targetNamespace="http://ws.javamission.com/" name="CreditHistoryCheckupWSService" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:tns="http://ws.javamission.com/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
  <types>
    <xsd:schema>
      <xsd:import namespace="http://ws.javamission.com/" schemaLocation="CreditHistoryCheckupWSService_schema1.xsd"/>
    </xsd:schema>
  </types>
  <message name="getCreditScore">
    <part name="parameters" element="tns:getCreditScore"/>
  </message>
  <message name="getCreditScoreResponse">
    <part name="parameters" element="tns:getCreditScoreResponse"/>
  </message>
  <portType name="CreditHistoryCheckupWS">
    <operation name="getCreditScore">
      <input message="tns:getCreditScore"/>
      <output message="tns:getCreditScoreResponse"/>
    </operation>
  </portType>
  <binding name="CreditHistoryCheckupWSPortBinding" type="tns:CreditHistoryCheckupWS">
    <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/>
    <operation name="getCreditScore">
      <soap:operation soapAction=""/>
      <input>
        <soap:body use="literal"/>
      
      <output>
        <soap:body use="literal"/>
      </output>
    </operation>
  </binding>
  <service name="CreditHistoryCheckupWSService">
    <port name="CreditHistoryCheckupWSPort" binding="tns:CreditHistoryCheckupWSPortBinding">
      <soap:address location="REPLACE_WITH_ACTUAL_URL"/>
    </port>
  </service>
</definitions>


-->

For technical support please contact me at

murali@javamission.com