Org.springframework.http.converter.httpmessagenotreadableexception: required request body is missing

org.springframework.http.converter.HttpMessageNotReadableException: Required request body is missing

This exception occurs when the server expects a request body in the HTTP request, but the body is missing or empty. This typically happens when the client does not include the required data in the request body.

Example Scenario:

Let’s consider a scenario where we have an API endpoint that expects a JSON payload in the request body to create a new user. The API endpoint is defined as follows:

POST /api/users

The request body should contain a JSON object with properties like “name”, “email”, and “password”. The server-side code responsible for handling this request will try to deserialize the request body into a User object.

public ResponseEntity<String> createUser(@RequestBody User user) {
  // Handle user creation logic
}

If a request is made to create a new user without providing a request body, or with an empty request body, the server will throw the HttpMessageNotReadableException with the message “Required request body is missing”.

Solution:

To resolve this issue, make sure to include the required data in the request body when making the request to the API endpoint. In the example scenario, you should provide a valid JSON payload in the request body with all the necessary properties:

POST /api/users
Content-Type: application/json

{
  "name": "John Doe",
  "email": "john.doe@example.com",
  "password": "secretpassword"
}

By including the required data in the request body, the server will be able to deserialize the JSON payload into a User object and successfully process the request.