Spring REST service: retrieving JSON from Request

Question

I am building a REST service on Spring 3.1. I am using @EnableWebMVC annotation for that. Since my service will only be accepting JSON requests, I would also like to dump th

Answer 1

One simple way to do this would be to get the request body as String and then parse as a Java object. You can use this String then as you want.

So in your example:

@RequestMapping(method = RequestMethod.POST, consumes="application/json", produces="application/json", value = "employee")
@ResponseBody
public String updateEntity(@RequestBody String empAsString) {

    // Do whatever with the json as String 
    System.out.println(empAsString);

    // Transform it into the Java Object you want
    ObjectMapper mapper = new ObjectMapper();
    Employee emp = mapper.readValue(empAsString, Employee.class);

    // Do some DB Stuff. Anyway, the control flow does not reach this place.
    return "Employee " + emp.getName() + " updated successfully!";
}

As a note, if you need it as a list you can use:

List eventsList =
                mapper.readValue(jsonInString, mapper.getTypeFactory().constructCollectionType(List.class, Employee.class));