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Configure and deploy the JAX-RS Basics sample by following the instructions for building and running the sample on the JAX-RS Basics page.

Start WSO2 EI and change the configuration as follows:

Code Block

language	html/xml

<definitions xmlns="http://ws.apache.org/ns/synapse">
   <sequence name="fault">
      <log level="full">
         <property name="MESSAGE" value="Executing default sequence"/>
         <property name="ERROR_CODE" expression="get-property('ERROR_CODE')"/>
         <property name="ERROR_MESSAGE" expression="get-property('ERROR_MESSAGE')"/>
      </log>
      <drop/>
   </sequence>
   <sequence name="main">
      <log/>
      <drop/>
   </sequence>
   <api name="testAPI" context="/customerservice">
      <resource methods="POST" url-mapping="/customers">
         <inSequence>
            <send>
               <endpoint>
                  <address uri="http://localhost:82808282/jaxrs_basic/services/customers/customerservice"/>
               </endpoint>
            </send>
         </inSequence>
         <outSequence>
            <send/>
         </outSequence>
      </resource>
   </api>
</definitions>

In this proxy configuration, testAPI intercepts messages that are sent to the relative URL /customerservice/customers and sends them to the relevant endpoint by appending the url-mapping of the resource tag to the end of the endpoint URL.

Start tcpmon and make it listen to port 8280 8282 of your local machine. It is also important to set the target host name and the port as required. In this case, the target port needs to be set to 8280 (i.e. the port where the backend service is running).
We will now test the connection by sending a POST message that includes a payload inside an HTML body.
Go to the terminal and issue the following command:
curl -v -H "Content-Type: application/xml" -d "<Customer><id>123</id><name>John</name></Customer>" http://localhost:8280/customerservice/customers
The following reply message appears in the console:
Code Block
language html/xml
<Customer> <id>132</id> <name>John</name> </Customer>
Now send the same POST message but without the enclosed data as follows:
curl -v -H "Content-Type: application/xml" -d "" http://localhost:8280/customerservice/customer
Note
You would need to configure the backend service to handle such requests, if not the WSO2 EI will throw exceptions.

The tcpmon output shows the same REST request that was sent by the client, demonstrating that WSO2 EI handled the POST message regardless of whether it included a payload. However, you would need to configure the back-end service to handle such requests, or the application server will throw exceptions.

Using POST with Query Parameters

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Using POST with Query Parameters