Question

I want to map following JSON struct to a POJO class automatically:

{
    "fieldClass": 
    {
        "a": 1,
        "b": "b",
        "c": "c",
        "d": "d",
        "e": "e"
    }
}

I added the parameter to map JSON to POJO class to web.xml. Also I tried to define two class, one for wrapper class and one for inside class. But following exception is thrown when I tried to use some method:

SEVERE: Servlet.service() for servlet [Jersey REST Service] in context with path [/projectName] threw exception [org.codehaus.jackson.map.exc.UnrecognizedPropertyException: Unrecognized field “fieldClass” (Class className), not marked as ignorable
at [Source: org.apache.catalina.connector.CoyoteInputStream@4d5d6704; line: 1, column: 10] (through reference chain: className[“fieldClass”])] with root cause

Can I map this to Java classes automatically?

Answer 1

Have a look at this section: JSON.org Java section

Also Jackson Quickstart guide