GraphQL 架构错误

Posted 2023-03-08

【中文标题】GraphQL 架构错误

【英文标题】：GraphQL schema error

【发布时间】：2017-06-12 02:23:26

【问题描述】：

所以当我启动我的服务器时，我会得到这个错误列表

/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:966 throw (0, _error.syntaxError)(lexer.source, token.start, 'Expected ' + kind + ', found ' + (0, _lexer.getTokenDesc)(token)); ^ GraphQLError at syntaxError (/Users/charlie/workspace/HackQLServer/node_modules/graphql/error/syntaxError.js:28:15) at expect (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:966:32) at parseName (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:88:15) at parseInputValueDef (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:743:14) at many (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:1015:16) at parseArgumentDefs (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:735:10) at parseFieldDefinition (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:714:14) at any (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:1002:16) at parseObjectTypeDefinition (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:683:16) at parseTypeSystemDefinition (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:607:16) at parseDefinition (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:148:16) at parseDocument (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:106:22) at Object.parse (/Users/charlie/workspace/HackQLServer/node_modules/graphql/language/parser.js:43:10) at buildSchemaFromTypeDefinitions (/Users/charlie/workspace/HackQLServer/node_modules/graphql-tools/src/schemaGenerator.ts:145:37) at _generateSchema (/Users/charlie/workspace/HackQLServer/node_modules/graphql-tools/src/schemaGenerator.ts:72:18) at makeExecutableSchema (/Users/charlie/workspace/HackQLServer/node_modules/graphql-tools/src/schemaGenerator.ts:97:20)

所有这些都出现了。我真的不明白我的错误在哪里。这是我的架构文件，我认为错误是

const typeDefinitions = `
    type Author 
      id: Int
      firstName: String
      lastName: String
      posts: [Post]
    

    type Post 
      id: Int
      title: String
      text: String
      author: Author
    

type Query 
  author(firstName: String, lastName: String): Author
  allPosts(): [Post!]!


schema 
  query: Query
`

export default [typeDefinitions]

如果您认为错误可能源于它，这也是我的解析器文件

import  Author, Post  from './connectors'

const resolvers = 
  Query: 
    author: (root, args) => 
      return Author.find( where: args )
    ,
    allPosts: (root, args) => 
      return Post.findAll()
    ,
    allAuthors: (root, args) => 
      return Author.findAll()
    
  ,
  Author: 
    posts: (author) => 
      return author.getPosts()
    
  ,
  Post: 
    author: (post) => 
      return post.getAuthor()
    
  


export default resolvers

如果您看到任何内容，请告诉我，因为我无法弄清楚这一点。我还在使用 Sequelize 与 sqlite 进行数据库连接，以防您想知道我的模型查询的语法是什么。

【参考方案1】：

我认为错误在这一行

type Query author(firstName: String, lastName: String): Author allPosts(): [Post!]!

因为allPost 没有参数，所以不需要双亲。应该是

type Query author(firstName: String, lastName: String): Author allPosts: [Post!]!

遇到这样的神秘错误， throw (0, _error.syntaxError)(lexer.source, token.start, 'Expected ' + kind + ', found ' + (0, _lexer.getTokenDesc)(token)) 很可能是架构文件中的无效语法引起的