Android Question Consuming a Web Service

RVP · May 30, 2014

I have searched for, and read as many threads as I can, but I am obviously missing something:

Given the following WSDL, how do I use the HttpUtils2 to as an example, request a list of customer via GetCustomerList?

B4X:

<?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 2.2.4-b01. -->
<definitions targetNamespace="ccos" name="CCOSService" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:wsp="http://www.w3.org/ns/ws-policy" xmlns:tns="ccos" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:wsp1_2="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsam="http://www.w3.org/2007/05/addressing/metadata" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
  <import namespace="http://bbjgenerated/" location="CCOS.wsdl"/>
  <binding name="CCOSServicePortBinding" type="ns1:CCOS" xmlns:ns1="http://bbjgenerated/">
  <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/>
  <operation name="getOrderDetail">
  <soap:operation soapAction="getOrderDetail"/>
  <input>
  <soap:body use="literal"/>
  </input>
  <output>
  <soap:body use="literal"/>
  </output>
  </operation>
  <operation name="getInStockItems">
  <soap:operation soapAction="getInStockItems"/>
  <input>
  <soap:body use="literal"/>
  </input>
  <output>
  <soap:body use="literal"/>
  </output>
  </operation>
  <operation name="getCustomerList">
  <soap:operation soapAction="getCustomerList"/>
  <input>
  <soap:body use="literal"/>
  </input>
  <output>
  <soap:body use="literal"/>
  </output>
  </operation>
  <operation name="getOrderHeader">
  <soap:operation soapAction="getOrderHeader"/>
  <input>
  <soap:body use="literal"/>
  </input>
  <output>
  <soap:body use="literal"/>
  </output>
  </operation>
  <operation name="login">
  <soap:operation soapAction="login"/>
  <input>
  <soap:body use="literal"/>
  </input>
  <output>
  <soap:body use="literal"/>
  </output>
  </operation>
  <operation name="placeOrder">
  <soap:operation soapAction="placeOrder"/>
  <input>
  <soap:body use="literal"/>
  </input>
  <output>
  <soap:body use="literal"/>
  </output>
  </operation>
  <operation name="getOrders">
  <soap:operation soapAction="getOrders"/>
  <input>
  <soap:body use="literal"/>
  </input>
  <output>
  <soap:body use="literal"/>
  </output>
  </operation>
  </binding>
  <service name="CCOSService">
  <port name="CCOSServicePort" binding="tns:CCOSServicePortBinding">
  <soap:address location="REPLACE_WITH_ACTUAL_URL"/>
  </port>
  </service>
</definitions>

RVP · May 30, 2014

OK, maybe the issue isn't my syntax. Although I am still wondering if that is correct.. However I just noticed that if I look at the Job on JobDone, I can see the following errormessage

org.apache.http.conn.HttpHostConnectException: Connection to http://localhost:8888 refused

What could be the cause of this? I can browse to that address fine (And it is on my computer)

Erel · Jun 1, 2014

I guess that you are using the emulator. localhost points to the emulator internal loopback address. Use 10.0.0.2 instead. This tells the emulator to connect to the host localhost.

RVP · Jun 1, 2014

Nope, physical device, Asus Transformer. Although that does probably mean I should be using the actual IP address of my computer where the web server is running?

Erel · Jun 1, 2014

You will need to use your PC IP address and also make sure that the PC firewall accepts incoming connections on this port.

RVP · Jun 1, 2014

Ok, I bet that is it, hard to think that a device connected physically to my computer, needs permissions.

On the other part of my question, how would I format the request ?

Erel · Jun 1, 2014

You will need to build this string. See this example: [Example] Add OCR features to your Android application

RVP · Jun 2, 2014

Erel I have discovered that I can create a jar file from the development environment that is being used to create the Web Service, so I was hoping to be able to use this, and the new AdditionalJar and JavaObject functionality, to access the service. But although I went over your tutorial on Picasso, I cant figure out what syntax I need to use. Ihave attached the jar file

RVP · Jun 2, 2014

This is how I am trying to access the classes.

Per the documentation for the development language

Generating client stubs is really easy using the tools available
in Java 6. Locate Java’s wsimport tool in the bin directory
of your JDK 6 install. To generate client stubs for the "Chile
Company Web Service" demo, we switched to a directory in
which we wanted to generate a couple of Java packages with
Java classes, and then entered the following at the command/
shell prompt:

wsimport http://192.168.2.210:8888/webservice/CCOS?WSDL

The "ccos" package contains two classes known as the
service and port classes. In the case of CCOS, the service
class is called CCOSServiceService and the port class is
called CCOS. The bbjgenerated directory contains the classes
that correspond to the methods that BASIS configured in the
EM. These are message classes the port class uses, but not
directly by the client.

1. Reference the generated classes. The USE statements
allow the program to access generated classes in the jar
located in the classpath.

B4A: #AdditionalJar: EmeraldWeb

2. Instantiate the service class. The service class is one
of two classes in the package and has the name
<Service Name>+"Service".

B4X:

 Dim service,port As JavaObject
  service.InitializeNewInstance("EmeraldWeb.ccos.CCOSServiceService",Null)

3. Obtain the port from the service. The port is the other
class that is included in the ccos package and has the
same name as the service. Rather than instantiating this
class directly, call the get<service name>ServicePort()
method on your service object.

B4X:

port = service.RunMethodJO("getCCOSServicePort",Null)

Then I try to use one of the Methods

B4X:

Log(port.RunMethod("getCustomerList",Null))

However I am getting an error on the first statement

B4X:

 Dim service,port As JavaObject
  service.InitializeNewInstance("EmeraldWeb.ccos.CCOSServiceService",Null)

java.lang.ClassNotFoundException: EmeraldWeb$CCOSServiceService

I have confirmed that the namespace is lower case ccos, so I assume I have some issue with my naming?

Erel · Jun 3, 2014

There are many possible issues. Are you sure that the jar file created is compatible with Android?

I recommend you to generate the XML file and then parse it. In most cases it quite easy to do and will give you full control.

Android Question Consuming a Web Service

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