javascript - 尝试使用 graphql.js 访问 Github 的 v4 API 时出现错误请求

Question

我正在尝试使用 graphql.js 库从 Github 的 GraphQL API 检索一些数据。

var graph = graphql("https://api.github.com/graphql", {
  method: "POST",
  headers: {
    "Authorization": "Bearer <my-token-here>",
    "Content-Type": "application/json"
  },
  fragments: {
    rateLimitInfo: "on RateLimit {cost,remaining,resetAt}"
  }
});
graph(`
    query repo($name: String!, $owner: String!){
        repository(name:$name, owner:$owner){
            id      
        }
    }
`,{
    name: "freeCodeCamp",
    owner: "freeCodeCamp"
}).then(function(response){
    console.log(response);
}).catch(function(error){
    console.log(error);
});

我的 promise 没有兑现，而且总是失败。我收到代码为 400(错误请求) 的 HTTP 响应，catch 函数的 error 参数为:

{
    message: "Problems parsing JSON", 
    documentation_url: "https://developer.github.com/v3"
}

我已经尝试过将变量作为 JSON 传递，如下所示:

{
    "name": "freeCodeCamp",
    "owner": "freeCodeCamp"
}

但这并没有帮助。我收到了同样的错误请求。

查看 Chrome 检查器的“网络”选项卡，我看到了请求负载是什么。将其添加到此处以防它提供任何线索或帮助。

query=query%20repo(%24name%3A%20String!%2C%20%24owner%3A%20String!)%7Brepository(name%3A%24name%2C%20owner%3A%24owner)%7Bid%7D%7D&variables=%7B%22name%22%3A%22freeCodeCamp%22%2C%22owner%22%3A%22freeCodeCamp%22%7D

我做错了什么？

Answer 1

graphql.js 的默认行为是以 form-url-encoded 格式发送正文，而 Github GraphQL api 只接受 JSON 格式。来自 graphql.js readme :

As default, GraphQL.js makes a POST request. But you can change the behavior by setting asJSON.

var graph = graphql("http://localhost:3000/graphql", {   
    asJSON: true
});

你可以看出区别here

以下将按预期工作:

var graph = graphql("https://api.github.com/graphql", {
  headers: {
    "Authorization": "Bearer YOUR_ACCESS_TOKEN"
  },
  asJSON: true
});
graph(`
    query repo($name: String!, $owner: String!){
        repository(name:$name, owner:$owner){
            id      
        }
    }
`, {
  name: "freeCodeCamp",
  owner: "freeCodeCamp"
}).then(function(response) {
  console.log(response);
}).catch(function(error) {
  console.log(error);
});