Entity Creation: Malformed JSON leads to HTTP 500

[mariodavid]

Given the following malformed JSON structure:

POST {{baseUrl}}
         /entities
         /rstex11_Customer
Authorization: Bearer {{auth_token}}

{
  id: "13f01f59-8e5f-4fd9-802b-66501d49ac99"
  name: "Randall Bishop"
}

(missing the comma between id and name attributes) the result is HTTP 500:

HTTP/1.1 500 

{
  "error": "Server error",
  "details": ""
}

Internal error message:

2021-03-03 10:12:11.489 ERROR 71694 --- [io-8080-exec-10] i.j.r.a.c.RestControllerExceptionHandler : Exception in REST controller

com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Unterminated object at line 3 column 4 path $.id
	at com.google.gson.internal.Streams.parse(Streams.java:60) ~[gson-2.8.6.jar:na]
	at com.google.gson.JsonParser.parseReader(JsonParser.java:85) ~[gson-2.8.6.jar:na]
	at com.google.gson.JsonParser.parseReader(JsonParser.java:60) ~[gson-2.8.6.jar:na]
	at com.google.gson.JsonParser.parseString(JsonParser.java:47) ~[gson-2.8.6.jar:na]
	at com.google.gson.JsonParser.parse(JsonParser.java:98) ~[gson-2.8.6.jar:na]
	at io.jmix.rest.api.service.EntitiesControllerManager.createEntity(EntitiesControllerManager.java:397) ~[jmix-rest-0.3.0.jar:na]
	at io.jmix.rest.api.controller.EntitiesController.createEntity(EntitiesController.java:132) ~[jmix-rest-0.3.0.jar:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_172]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_172]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_172]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_172]
// ...
	... 105 common frames omitted

Expected behavior:

HTTP 400 with an error message explaining that this is not a valid JSON structure.

[mariodavid]

see also #35

[mariodavid]

Other example:

POST {{baseUrl}}
         /entities
         /rstex11_Order?responseFetchPlan=order-with-details
Authorization: Bearer {{auth_token}}

{
  "customer": {
    "id": "f88597ff-009d-1cf2-4a90-a4fb5b08d835"
  },
  "date": "2021-03-01",
  "amount": 130.08,
  "lines": [
    {
      "product": null
      "quantity": 2
    },
    {
      "product": null
      "quantity": 1
    }
  ]
}

(missing , in each OrderLine instance).