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我目前正在为一个网站写一个第三方客户端，但是它没有暴露接口，所以我尝试自己爬取数据。该网站使用 GraphQL，所以我在项目中使用了apollo-android，通过阅读apollo-CLI的 README.md ，我仍然无法生成 schema.json 文件。你能告诉我如何生成schema.json的详细步骤吗？

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对于schema.json，您应该有 apollo-codegen，它用于向服务器发送自省查询并获取 schema.json。

要获取 apollo-codegen，请从命令提示符执行以下命令以安装它：

 npm install apollo-codegen -g

要发送自省查询并获取schema.json ，请执行以下操作：

 apollo-codegen download-schema https://api.github.com/graphql --output schema.json

将https://api.github.com/graphql替换为您的链接

然后，您可以找到保存到运行上述命令的文件夹中的schema.json文件。

资源

于 2019-10-18T05:01:07.103 回答
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apollo-codegen同时被替换为apollo：

'apollo-codegen' 命令已被更强大的 'apollo' CLI 取代。切换到“apollo”以确保未来更新，并访问https://npm.im/apollo#code-generation了解更多信息。

所以这将是：

sudo npm install apollo -g

它的选项：

$ apollo client:download-schema --help
Download a schema from Apollo or a GraphQL endpoint in JSON or SDL format

USAGE
  $ apollo client:download-schema OUTPUT

ARGUMENTS
  OUTPUT  [default: schema.json] Path to write the introspection result to. Can be `.graphql`, `.gql`, `.graphqls`, or `.json`

OPTIONS
  -c, --config=config                    Path to your Apollo config file
  -g, --graph=graph                      The ID for the graph in Apollo to operate client commands with. Overrides config file if set.
  -v, --variant=variant                  The variant of the graph in Apollo to associate this client to
  --clientName=clientName                Name of the client that the queries will be attached to
  --clientReferenceId=clientReferenceId  Reference id for the client which will match ids from client traces, will use clientName if not provided
  --clientVersion=clientVersion          The version of the client that the queries will be attached to
  --endpoint=endpoint                    The URL for the CLI use to introspect your service
  --excludes=excludes                    Glob of files to exclude for GraphQL operations. Caveat: this doesn't currently work in watch mode
  --header=header                        Additional header to send during introspection. May be used multiple times to add multiple headers. NOTE: The `--endpoint` flag is REQUIRED if using the `--header` flag.
  --includes=includes                    Glob of files to search for GraphQL operations. This should be used to find queries *and* any client schema extensions
  --key=key                              The API key to use for authentication to Apollo
  --queries=queries                      Deprecated in favor of the includes flag
  --tagName=tagName                      Name of the template literal tag used to identify template literals containing GraphQL 
                                         queries in Javascript/Typescript code

例如：

apollo client:download-schema --endpoint=https://api.github.com/graphql schema.json
于 2020-10-18T08:06:24.937 回答