片段是 GraphQL 的主要组合数据结构,通过片段可以重用重复的字段选择,减少 query 中的重复内容。接下来我们将介绍使用片段(fragments )的两种方式: fragments 片段扩展运算符(Fragment spread):当你在操作或者其他片段中使用片段时,你可以将片段名置于...之后来表示片段。例如没有片段时需要这样编写 query: 代码语言:j...
constresolvers={Query:{books:()=>books,},};// 一般会在 resolvers 中连接数据库获取数据,但是为了简单,我们直接返回定义好的数据constbooks=[{title:'Harry Potter and the Chamber of Secrets',author:'J.K. Rowling',},{title:'Jurassic Park',author:'Michael Crichton',},]; 创建一个 ApolloServer...
操作类型( Operation type ):共三种类型:查询( query )、更新( mutation )、订阅( subscription )。它描述了你试图进行何种操作。然而这些看起来意思很接近的操作,GraphQL 服务器处理它们时还是会有一些不同。 操作名称( Operation name ):为了方便调试和服务端打日志,最好给你的查询赋予语义化的命名。这样,无论...
今天我们来继续学习 Spring Boot GraphQL 实战,我们使用的框架是https://github.com/graphql-java-kickstart/graphql-spring-boot 项目github 地址:https://github.com/shenjianeng/graphql-spring-boot-example Query(查询) 带参数的查询 首先,在 classpath 下创建 graphqls 文件: type Book{ id:ID! name:St...
@Query public Integer getRandomNumber(long seed){ Random random = new Random(seed); return random.nextInt(); } { person1:person(id:1){ surname scores{ name value } } randomId:randomNumber(seed:11) } Demo 5: Collections { people { surname } } ...
Let’s do an example with products. You might also like:The Shopify App CLI Tool: Build Apps Faster. A query example with products I'm going to structure my query as I go, and compare it to the schema just so that you can see what's going on. I’ll also take a look at a vis...
query { user(id: "1") { name email } } Mutation(变更) 用于修改服务器上的数据。 示例: graphql mutation { createUser(name: "Alice", email: "alice@example.com") { id name } } Subscription(订阅) 用于实时数据更新。 示例: graphql ...
Let’s do an example with products. You might also like:The Shopify App CLI Tool: Build Apps Faster. A query example with products I'm going to structure my query as I go, and compare it to the schema just so that you can see what's going on. I’ll also take a look at a vis...
("com.example.graphql.demo.models").withOperationsFromSingletons(candidateResolver,resumeResolver).generate();}@BeanpublicGraphQLgetGraphQL(GraphQLSchemagraphQLSchema){returnGraphQL.newGraphQL(graphQLSchema).queryExecutionStrategy(newAsyncExecutionStrategy()).instrumentation(newCustomTracingInstrumentation())....
项目github 地址:https:///shenjianeng/graphql-spring-boot-example Query(查询) 带参数的查询 首先,在 classpath 下创建 graphqls 文件: type Book{ id:ID! name:String! } type Query{ # 根据 id 查询 book,参数名为 id,参数类型的 ID 类型,结果返回 book ...