Using Xpath with camel

Lets see how to extract data from XML files using Xpath in camel.

Create a java project in eclipse.
Create a folder by name testFileFolder and place the below given file.
The xml file that we will be using it, lets call it demo.xml


<emp>
 <name>admin</name>
 <phone>1234567890</phone>
 <address>address 1</address>
 <address>address 2</address>
</emp>

We will be extracting the address data alone from the xml.

Next create a java file by name MyService.java as given below,


package com.techexample.processor;


import org.apache.camel.Exchange;
import org.apache.camel.Processor;

public class MyService implements Processor {
 @Override
 public void process(Exchange exchange) throws Exception {
  String data=(String)exchange.getIn().getBody();
  System.out.println(data);
 }
}


Now the main part, we are going to create the camel context file.
Create a file with name camelContext.xml and place it inside a folder say Resource

The file context is,

<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:camel="http://camel.apache.org/schema/spring"
 xsi:schemaLocation="
         http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans.xsd
         http://camel.apache.org/schema/spring
         http://camel.apache.org/schema/spring/camel-spring.xsd">
 <bean id="splitdata" class="com.techexample.processor.MyService" />
 <camel:camelContext id="readfile" trace="true">
  <camel:route id="CsvSplit" trace="true">
   <camel:from uri="file:testFileFolder" />
   <camel:split parallelProcessing="false">
    <camel:xpath>/emp/address/text()</camel:xpath>
    <camel:convertBodyTo type="java.lang.String"/>
    <camel:to uri="bean:splitdata" />
   </camel:split>
  </camel:route>
 </camel:camelContext>
</beans>

Now, we have to write a java file to bring up the camel context file.

Click this link for the java file, MyClient.java


Steps to run the camel project

Go to project properties, under java buildpath -> source , add the resource and testfileFolder.
Now right click in our MyClient.java file and click runAs -> java application


OUTPUT:


address 1
address 2