This document provides a tutorial on how to convert JSON to objects in Mule ESB in 5 minutes. It describes creating a simple flow with an HTTP listener to get JSON data, defining a Java POJO class to map to the JSON, adding a JSON to Object transformer to perform the conversion, and using a logger to output the converted object. The tutorial is tested by sending a request via Postman and verifying the conversion was successful by checking the log output.

1. Mule ESB
How to convert from Json to Object in 5 minutes
Gennaro Spagnoli - 2016

2. Gennaro Spagnoli - 2016
In this tutorial we will be creating an easy json to object converter using mule esb.
Let’s begin creating a simple flow with an http listener, in order to get some json sdata from
some external source:
Now, let’s create a java pojo class, called User, like this:

3. Gennaro Spagnoli - 2016
package com.mulechampion;
import java.io.Serializable;
public class JsonClass implements Serializable{
/**
*
*/
private static final long serialVersionUID = -5645625751838751914L;
private String name;
private String surname;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSurname() {
return surname;
}
public void setSurnme(String surnme) {
this.surname = surnme;
}
@Override
public String toString() {
return "JsonClass [name=" + name + ", surname=" + surname + "]";
}
}

4. Gennaro Spagnoli - 2016
Now we can put our Json to Object transformer in order to get the transformation:
For now, no further configuration is required for the component.
Let’s add the usual Logger component to show the transformation done on the console:

5. Gennaro Spagnoli - 2016
It’s time to start the server and get ready to test the application by calling the flow.
To do this, we will use postman as the http client, to create the request and get the response.
Configure it like this:

6. Gennaro Spagnoli - 2016
Let’s now press «send» and see the result on the console:
Fantastic!
HTTP_Listener_Configuration.worker.01]
org.mule.api.processor.LoggerMessageProcessor:
JsonClass [name=Gennaro, surname=Spagnoli]