Spring @RestController double @RequestBody json input-CodePudding

I have implemented the following classes:

public class classA {
    String fieldA;
}

public class classB {
    String fieldB;
}

Then i am using a rest controller having objects of these classes as input:

@RestController
public class MyController {
    @PostMapping(value="/resource")
    public void foo(@RequestBody objA, @RequestBody objB){
        //do stuff
    } 
}

When i invoke the API using the following input:

{
    "objA" : {
        "fieldA" : "valueA"
    },
    "objB" : {
        "fieldB" : "valueB"
    }
}

I get the following error:

org.springframework.http.converter.HttpMessageNotReadableException: Required request body is missing: public void com.classA

Am i missing something on the JSON input?

CodePudding user response：

It's not possible to have multiple @RequestBody. For that usecase you need to write a Wrapperclass:

public class ClassAB {
    ClassB classB;
    ClassA classA;
}

and then use it in the RestController:

@RestController
public class MyController {
    @PostMapping(value="/resource")
    public void foo(@RequestBody ClassAB ab){
        // ab.classB
        // ab.classA
        // do stuff
    } 
}

CodePudding user response：

You cannot pass more than one request body, you need to pass an Array of objects or have an outer object containing the two objects, or you could use a map, a JSONObject ecc.

There are many ways to do this depending on your use case.