Express中的GraphQl中的错误，Node js

Question

我正在尝试在Express中运行GraphQl Server。但是它会在错误之后引发。

var graphqlHTTP = require('express-graphql'); // express graphql
var { buildSchema } = require('graphql');  // graphql
var schema=buildSchema(
    type Query {
        name:String});
var classifyRoot={
     name:()=>{
        classified.find({name:"shoes"},function(err,classified){
            //res.render("card",{classifieds:classifieds});
            return classified.name;
        });
    },};
app.use('/graphql', graphqlHTTP({
  schema: schema,
  rootValue: classifyRoot,
  graphiql: true,
}));

Answer 1

buildSchema的参数应为字符串。（注意背键）

var schema=buildSchema(`
    type Query {
        name:String
    }
`);

Answer 2

缺少 =！

要使用您需要执行此操作的类型：

type Query = {
  //Variables and types goes here:
  //ex:  username: string
}

希望我有帮助