How to describe standard Spring error response in springdoc Schema? - spring

The default server response of a SpringBoot app in case of unhandled errors is
{
"timestamp": 1594232435849,
"path": "/my/path",
"status": 500,
"error": "Internal Server Error",
"message": "this request is failed because of ...",
"requestId": "ba5058f3-4"
}
I want to describe it in a Springdoc annotation for routes of an application.
Assuming that there is a standard class DefaultErrorResponse (just a mock name), it could look like the following:
#Operation(
// ... other details
responses = {
// ... other possible responses
#ApiResponse(
responseCode = "500",
content = #Content(schema = #Schema(implementation = DefaultErrorResponse.class)))
}
)
In a worse case scenario such class does not exists and Spring uses just a Map under the hood for this response creation. Then this annotation will be more verbose, including explicit mention of every field contained in the response.
Obviously for most of the routes this part #ApiResponse(responseCode="500",... is the same, and it would be good to reduce duplication.
What is the proper way to introduce description of the default error response in the documentation?

For error Handling, you use #RestControllerAdvice in combination #ExceptionHandler, in order to refactor the error handling.
These spring annotations are scanned automatically by springdoc-openapi. Without the need to add any additional swagger annotation.

Related

How to set message for error reponse status in Spring MVC?

I have a spring mvc handler like this:
#PostMapping("jwtToken")
fun jwtToken(#RequestBody body: JWTToken)
{
val token = body.token
if(token.isNullOrBlank())
throw ResponseStatusException(HttpStatus.UNAUTHORIZED, "Empty token")
}
If i send it an incorrect input, that triggers the exception, i get a reponse body like this:
{
"timestamp": "2020-10-30T03:41:20.305+00:00",
"status": 401,
"error": "Unauthorized",
"message": "",
"path": "/auth/jwtToken"
}
Why is the 'message' field empty in the response when i did assign a message to the exception? How do i set the message field
It might be related to the updated behaviour of the Spring Boot.
https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.3-Release-Notes#changes-to-the-default-error-pages-content
server.error.include-message=always
in .properties should do the trick but I prefer to use my own extended classes like this:
class CustomException(message: String): Exception(message) { ... }

Micronaut GraphQL: How to respond with a non-200 HTTP status code from within GraphQL handler?

Following the docs and here's my exception handler (Kotlin):
#Produces
#Singleton
#Requirements(Requires(classes = [ForbiddenException::class, ExceptionHandler::class]))
class ForbiddenExceptionHandler : ExceptionHandler<ForbiddenException, HttpResponse<*>> {
override fun handle(request: HttpRequest<*>, exception: ForbiddenException): HttpResponse<*> {
return HttpResponse.status<String>(HttpStatus.FORBIDDEN, exception?.message)
}
}
Throwing a ForbiddenException from within my GraphQL handler bubbles the message into the response body, but the status code is always 200.
Example response:
{
"errors": [
{
"message": "Exception while fetching data (/createUser) : FORBIDDEN",
"locations": [
{
"line": 2,
"column": 3
}
],
"path": [
"createUser"
],
"extensions": {
"classification": "DataFetchingException"
}
}
],
"data": null
}
Micronaut version: 1.3.3
Micronaut GraphQL version: 1.3.0.RC1
Disclaimer:
GraphQL is not REST. You are here asking a question related to the core foundation of graphql specification (and any implementations of graphql in general).
They made the choice to embed most errors encountered in the execution of the queries but yet always return a 200 HTTP status. Therefore, you won't be able to change that in your project. It is not a configuration of graphql-java.
The good news is that the format of errors is known. Therefore, you are able to deserialize the error return payload in your application and handle correctly any error that would be thrown by graphql.
Please have a look at this link for in-depth explanations about the main difference between REST and Graphql.

Send custom error response in Spring Cloud Gateway when no route matches

In Spring Cloud Gateway , I want to send a custom error in case a particular predicate match fails . For eg:-
I have a Path and a header predicate. Something like this -
- id: test
uri: http://localhost:8000/
predicates:
- Path=/consignment
- Header=h,h1
So if the path mathces and header doesn't , the request fails with not found error something like by default-
{
"timestamp": "2020-03-08T20:05:42.440+0000",
"path": "/test",
"status": 404,
"error": "Not Found",
"message": null,
"requestId": "6dd2e799"
}
But I want to send a custom response mentioning that the header is not present.
Is there a way to do that?

Error while creating Sales Order with "API_SALES_ORDER_SRV"

we want to create a Sales Order with Cloud SDK (Version 1.9.2) using Virtual Data Model (A_SalesOrder) in our Java Application.
We are calling S4 OnPremise System (1709).
SalesOrder so = SalesOrder.builder()
.salesOrderType("ZKE")
.salesOrganization("DE01")
.distributionChannel("01")
.organizationDivision("00")
.build();
try {
SalesOrder salesOrder = new
SalesOrderCreateFluentHelper(so).execute(endpoint);
} ....
We are getting the following error (while executing via PostMan):
"errordetails": [
{
"code": "CX_SADL_ENTITY_SRVICE_NOT_SUPP",
"message": "The requested service is not supported by entity ~A_SALESORDER",
"propertyref": "",
"severity": "error",
"target": ""
},
{
"code": "/IWBEP/CX_MGW_MED_EXCEPTION",
"message": "An exception was raised",
"propertyref": "",
"severity": "error",
"target": ""
}
]
Can somebody give us a advise to create a Sales Order via the API?
How we can create Sales Order Items for this Sales Order in one Step?
Thanks!
Additional information OData Request Data
(Response Data not provided in ERROR_LOG):
Request-Header / Request-Body:
Apparently we received this error message because we did not include any items in the request. If you give it in your body it worked. Thank you
Can you pls share the OData request and response body and payload?
Open transaction /IWFND/ERROR_LOG, choose the error message and in the lower part of the screen, choose Request Data resp. Response Data and provide us both body and header. Make sure to omit any confidential data.

Mailchimp API 2.0 lists/subscribe responding with error 250 List_MergeFieldRequired MMERGE4 is required

I'm attempting to use the lists/subscribe Mailchimp API 2.0 endpoint to subscribe an email to a list, but I keep getting a puzzling error. My request looks like:
{
"apikey":"myapikey-us5",
"id":"listid",
"email":{"email":"my#email.com"},
"double_optin":false,
"send_welcome":true
}
I'm sending this to https://us5.api.mailchimp.com/2.0/lists/subscribe.json and getting this response:
{
"status": "error",
"code": 250,
"name": "List_MergeFieldRequired",
"error": "MMERGE4 must be provided - Please enter a value"
}
And if I specify "merge_vars": {} I still get the same error. What am I missing here?
It means you need to provide a value for MMERGE4 merge field. How you do this depends on what type of merge field MMERGE4 is, but It would be like this:
{
"apikey":"myapikey-us5",
"id":"listid",
"email":{"email":"my#email.com"},
"double_optin":false,
"send_welcome":true,
"merge_vars": {
"MMERGE4": "something"
}
}
But you should look and see what type of data that is, otherwise you might cause issues for whomever set that up as a required field.

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