突变中未使用GraphQL变量

Question

我的变异查询：

mutation ($matchId: String!) {
  assignMatch(matchId: $matchId) {
    id
  }
}

查询变量：

{ "matchId": "123" }

GraphQL模式（突变定义）：

type Mutation {
    assignMatch(matchId: String!): Assignment
}

我尝试同时使用GraphiQL接口和apollo-client来发送带有变量的请求，但出现了相同的错误。有什么想法吗？

Answer 1

耶！！原因是我的GraphQLController类没有解析请求中的变量：

@RequestMapping(value = "/graphql", method = RequestMethod.POST,
        consumes = MediaType.APPLICATION_JSON_UTF8_VALUE,
        produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody
public String execute(@RequestBody Map<String, Object> request) throws IOException {
    ExecutionInput executionInput = ExecutionInput.newExecutionInput()
            .query((String) request.get("query"))
            .operationName((String) request.get("operationName"))
            // THE FOLLOWING LINE WAS ABSENT:
            .variables((Map<String, Object>) request.get("variables"))
            .build();
    ExecutionResult executionResult = graphQL.execute(executionInput);
    return mapper.writeValueAsString(executionResult);
}