Hello everyone, In this post, you will learn How to Convert JSON to XML using Apache Camel. The example has been tested and shared in the post.

Maven Dependencies

<dependency>
<groupid>org.apache.camel</groupid>
<artifactid>camel-core</artifactid>
<version>${camel-version}</version>
</dependency>
<dependency>
<groupid>org.json</groupid>
<artifactid>json</artifactid>
<version>${json.version}</version>
</dependency>

Example Program

package com.dineshkrish;
import org.apache.camel.CamelContext;
import org.apache.camel.ConsumerTemplate;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.impl.DefaultCamelContext;
import org.json.JSONObject;
import org.json.XML;
/**
* 
* @author Dinesh Krishnan
*
*/
public class JsonToXml {
public static void main(String[] args) throws Exception {
// creating the camel context
CamelContext context = new DefaultCamelContext();
try {
context.addRoutes(new RouteBuilder() {
@Override
public void configure() throws Exception {
from("direct:start").process(new Processor() {
public void process(Exchange exchange) throws Exception {
// get the json
String json = exchange.getIn().getBody(String.class);
// transform json to xml
JSONObject jsonObject = new JSONObject(json);
String xml = XML.toString(jsonObject);
// set the xml
exchange.getOut().setBody(xml);
}
}).to("seda:end");
}
});
// start the context
context.start();
String json = "{\"employee\": {\r\n" + "    \"name\": \"Dinesh Krishnan\",\r\n" + "    \"id\": 101,\r\n"
+ "    \"age\": 20\r\n" + "}}";
System.out.println(json);
// creating the producer template
ProducerTemplate producerTemplate = context.createProducerTemplate();
producerTemplate.sendBody("direct:start", json);
// creating the consumer template
ConsumerTemplate consumerTemplate = context.createConsumerTemplate();
String xml = consumerTemplate.receiveBody("seda:end", String.class);
System.out.println("-----------------JSON to XML---------------------");
System.out.println(xml);
// stop the context
context.stop();
} catch (Exception e) {
context.stop();
e.printStackTrace();
}
}
}

Output

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
{"employee": {
"name": "Dinesh Krishnan",
"id": 101,
"age": 20
}}
-----------------JSON to XML---------------------
<employee><name>Dinesh Krishnan</name><id>101</id><age>20</age></employee>

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