spring boot with restcontroller using jsonobject not working - spring-boot

Question

I am using spring boot, and while making a restcontroller or controller if I use the jsonobject type request then it doesnt work, whereas same works when I change type to string.
#Controller
#RequestMapping("rest/dummy")
public class CustomerController {
#GetMapping("test")
public ResponseEntity test(#RequestParam("req") JSONObject inputData) {
org.json.JSONObject response = new org.json.JSONObject();
response.put("abc", "123");
return new ResponseEntity(inputData.toString(), HttpStatus.OK);
}
pom.xml:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.5.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20171018</version>
</dependency>
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0.2</version>
</dependency>
I do want to use it both GET and POST type and also I want to use jsonobject for both request and response as the data can change on fly and its type.

Answer 1

In RequestParam , we send key values which added in URL,
To send Json object send it in RequestBody .
Use #RequestBody and send your Json in body part of your request.

Answer 2

Using real POJOs as params and return values is the better approach imo. Use Jackson annotations to configure those POJOs.
Anyways. This should work:
#GetMapping("test")
public ResponseEntity<String> test(#RequestParam("req") JSONObject inputData) {
org.json.JSONObject response = new org.json.JSONObject();
response.put("abc", "123");
return ResponseEntity.ok(inputData.toString());
}
alternatively
#GetMapping("test")
public ResponseEntity<SomeOutputDto> test(#RequestParam("req") String inputData) {
SomeOutputDto out = new SomeOutputDto();
out.setAbc(123);
return ResponseEntity.ok(dto);
}
this requires a additional class: SomeOutputDto, but on the other hand, you have more control over your code.
public class SomeOutputDto {
private int abc = 0;
public void setAbc(int v) {
this.abc = v;
}
public int getAbc() { return this.abc; }
}

Answer 3

Got it working by using apache-tomcat 8.0.15, the same doesnt work with apache-tomcat 8.0.49