{"id":48026,"date":"2023-10-31T14:22:33","date_gmt":"2023-12-09T21:04:06","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%93%b4%e5%a4%a7%e9%97%9c%e6%96%bc%e8%87%aa%e5%8b%95%e7%94%9f%e6%88%90graphql%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%9e%8b%e5%88%a5%e8%a7%a3%e6%9e%90\/"},"modified":"2024-05-04T06:52:44","modified_gmt":"2024-05-03T22:52:44","slug":"%e6%93%b4%e5%a4%a7%e9%97%9c%e6%96%bc%e8%87%aa%e5%8b%95%e7%94%9f%e6%88%90graphql%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%9e%8b%e5%88%a5%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%93%b4%e5%a4%a7%e9%97%9c%e6%96%bc%e8%87%aa%e5%8b%95%e7%94%9f%e6%88%90graphql%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%9e%8b%e5%88%a5%e8%a7%a3%e6%9e%90\/","title":{"rendered":"[\u64f4\u5927]\u95dc\u65bc\u81ea\u52d5\u751f\u6210GraphQL\u67e5\u8a62\u7684\u578b\u5225\u89e3\u6790"},"content":{"rendered":"

Amplify CodeGen\u53ef\u4ee5\u6839\u636e\u5b9a\u4e49\u7684GraphQL\u6a21\u5f0f\u81ea\u52a8\u751f\u6210\u67e5\u8be2\u3002
\n\u7136\u800c\uff0c\u4f7f\u7528Amplify\u5e93\u7684GraphQLAPI\u6267\u884c\u67e5\u8be2\u65f6\uff0c\u8fd4\u56de\u503c\u7c7b\u578b\u5c06\u53d8\u4e3aany\u3002
\n\u672c\u6587\u5c06\u8bb0\u5f55\u5728\u4f7f\u7528Typescript\u5f00\u53d1\u65f6\uff0c\u5982\u4f55\u4e3a\u81ea\u52a8\u751f\u6210\u7684\u67e5\u8be2\u7ed3\u679c\u52a0\u4e0a\u7c7b\u578b\u3002
\n\u5982\u679c\u53ea\u60f3\u770b\u7ed3\u8bba\uff0c\u8bf7\u76f4\u63a5\u67e5\u770b\u7b2c\u4e09\u6b65\u3002<\/p>\n

\u5982\u679c\u4f7f\u7528Amplify\u6765\u6267\u884cGraphQL\u67e5\u8be2<\/h2>\n

Amplify\u63d0\u4f9b\u4e86\u7528\u4e8e\u6267\u884cGraphQL\u67e5\u8be2\u7684API\u3002<\/p>\n

import<\/span> API<\/span>,<\/span> {<\/span> graphqlOperation<\/span> }<\/span> from<\/span> '<\/span>@aws-amplify\/api<\/span>'<\/span>;<\/span>\r\nAPI<\/span>.<\/span>graphql<\/span>(<\/span>graphqlOperation<\/span>(<\/span>query<\/span>,<\/span>variables<\/span>));<\/span>\r\n<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u6267\u884c\u3002<\/p>\n
import<\/span> API<\/span>,<\/span> {<\/span> graphqlOperation<\/span> }<\/span> from<\/span> '<\/span>@aws-amplify\/api<\/span>'<\/span>;<\/span>\r\nimport<\/span> getPost<\/span> as<\/span> queries<\/span> from<\/span> '<\/span>@\/graphql\/queries<\/span>'<\/span>;<\/span> \/\/ \u81ea\u52d5\u751f\u6210\u30af\u30a8\u30ea <\/span>\r\nconst<\/span> res<\/span> =<\/span> API<\/span>.<\/span>graphql<\/span>(<\/span>graphqlOperation<\/span>(<\/span>getPost<\/span>,{<\/span>id<\/span>:<\/span>\"<\/span>XXX<\/span>\"<\/span>}));<\/span>\r\n\/* res\r\ndata:{\r\n  getPost:{\r\n    id: XXX,\r\n    title: \"XX\u30d6\u30ed\u30b0\"\r\n  }\r\n}\r\n*\/<\/span>\r\n<\/code><\/pre>\n
\u53ef\u4ee5\u6839\u636e\u4e0a\u9762\u7684\u65b9\u6cd5\u6267\u884c\u67e5\u8be2\uff0c\u5e76\u83b7\u5f97\u7ed3\u679c\uff0c\u4f46\u7ed3\u679c\u7684\u7c7b\u578b\u5c06\u4e3aany\u3002
\n\u5f53\u7136\uff0c\u5982\u679c\u81ea\u5b9a\u4e49\u63a5\u53e3\u6216\u7c7b\u578b\uff0c\u53ef\u4ee5\u7ed9\u7ed3\u679c\u52a0\u4e0a\u7c7b\u578b\u3002<\/p>\n
type<\/span> Post<\/span>{<\/span>\r\n  id<\/span>:<\/span> string<\/span>;<\/span>\r\n  title<\/span>:<\/span> string<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7136\u800c\uff0c\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u91cd\u65b0\u5ba1\u89c6GraphQL\u6a21\u5f0f\uff0c\u6bcf\u6b21\u90fd\u8981\u4fee\u6539\u7c7b\u578b\u5b9a\u4e49\u6709\u70b9\u9ebb\u70e6\u3002\u6b64\u5916\uff0c\u9488\u5bf9\u5f15\u7528\u5176\u4ed6\u6a21\u578b\u7684\u81ea\u52a8\u751f\u6210\u67e5\u8be2\uff0c\u7531\u4e8e\u5176\u5c42\u6b21\u7ed3\u6784\u5982\u4e0b\u6240\u793a\uff0c\u6240\u4ee5\u72ec\u7acb\u5b9a\u4e49\u6240\u6709\u5185\u5bb9\u975e\u5e38\u56f0\u96be\u3002<\/p>\n
export<\/span> const<\/span> getPost<\/span> =<\/span> \/* GraphQL *\/<\/span> \r\n  query<\/span> GetPost<\/span>(<\/span>$id<\/span>:<\/span> ID<\/span>!<\/span>)<\/span> {<\/span>\r\n    getPost<\/span>(<\/span>id<\/span>:<\/span> $id<\/span>)<\/span> {<\/span>\r\n      id<\/span>\r\n      title<\/span>\r\n      comments<\/span> {<\/span>\r\n        items<\/span> {<\/span>\r\n          id<\/span>\r\n          content<\/span>\r\n        }<\/span>\r\n      }<\/span>\r\n   }<\/span>\r\n};<\/span>\r\n<\/code><\/pre>\n
\u56e0\u6b64\uff0c\u6211\u4eec\u5c06\u8003\u8651\u4e00\u79cd\u53ef\u4ee5\u5b9a\u4e49\u8fd9\u79cd\u5c42\u6b21\u7ed3\u6784\u7684\u65b9\u6cd5\u3002<\/p>\n
\u7b2c\u4e00\u6b65\uff08\u4f7f\u7528API.ts\uff09<\/h2>\n
\u6267\u884c CodeGen \u4f1a\u751f\u6210\u7c7b\u4f3c\u4e0b\u9762\u7684\u5b9a\u4e49\u6587\u4ef6\uff08API.ts\uff09\u7684\u6587\u4ef6\u3002<\/p>\n
export<\/span> type<\/span> GetPostQueryVariables<\/span> =<\/span> {<\/span>\r\n  id<\/span>:<\/span> string<\/span>,<\/span>\r\n};<\/span>\r\n\r\nexport<\/span> type<\/span> GetPostQuery<\/span> =<\/span> {<\/span>\r\n  getPost<\/span>:<\/span>  {<\/span>\r\n    __typename<\/span>:<\/span> \"<\/span>Post<\/span>\"<\/span>,<\/span>\r\n    id<\/span>:<\/span> string<\/span>,<\/span>\r\n    title<\/span>:<\/span> string<\/span> |<\/span> null<\/span>,<\/span>\r\n    comment<\/span>:<\/span>  {<\/span>\r\n      __typename<\/span>:<\/span> \"<\/span>comment<\/span>\"<\/span>,<\/span>\r\n      id<\/span>:<\/span> string<\/span>,<\/span>\r\n      content<\/span>:<\/span> string<\/span> |<\/span> null<\/span>,<\/span>\r\n    }<\/span> |<\/span> null<\/span>,<\/span>\r\n  }<\/span> |<\/span> null<\/span>,<\/span>\r\n};<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u4f7f\u7528\u8fd9\u4e2a\uff0c\u4f3c\u4e4e\u53ef\u4ee5\u89e3\u51b3\u4ee5\u4e0b\u7684\u7c7b\u578b\u95ee\u9898\u3002<\/p>\n
import<\/span> API<\/span>,<\/span> {<\/span> graphqlOperation<\/span> }<\/span> from<\/span> '<\/span>@aws-amplify\/api<\/span>'<\/span>;<\/span>\r\nimport<\/span> getPost<\/span> as<\/span> queries<\/span> from<\/span> '<\/span>@\/graphql\/queries<\/span>'<\/span>;<\/span> \/\/ \u81ea\u52d5\u751f\u6210\u30af\u30a8\u30ea <\/span>\r\nconst<\/span> res<\/span>:<\/span> GetPostQuery<\/span> =<\/span> API<\/span>.<\/span>graphql<\/span>(<\/span>graphqlOperation<\/span>(<\/span>getPost<\/span>,{<\/span>id<\/span>:<\/span>\"<\/span>XXX<\/span>\"<\/span>})).<\/span>data<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u6211\u8ba4\u4e3a\u8fd9\u6837\u5c31\u597d\u4e86\uff0c\u4f46\u6709\u4e24\u70b9\u6211\u6709\u70b9\u5728\u610f\u3002<\/p>\n
\u95ee\u9898\uff1a\u542b\u6709__typename\u7684\u90e8\u5206\u3002<\/h4>\n
\u6211\u89c9\u5f97\u6709\u8fd9\u4e2a\u53ef\u80fd\u6027\u4f1a\u66f4\u597d\uff0c\u4f46\u5728\u7c7b\u578b\u5b9a\u4e49\u4e0a\u53ea\u662f\u4e0d\u5305\u542b\u67e5\u8be2\u6267\u884c\u7ed3\u679c\u3002<\/p>\n
import<\/span> API<\/span>,<\/span> {<\/span> graphqlOperation<\/span> }<\/span> from<\/span> '<\/span>@aws-amplify\/api<\/span>'<\/span>;<\/span>\r\nimport<\/span> getPost<\/span> as<\/span> queries<\/span> from<\/span> '<\/span>@\/graphql\/queries<\/span>'<\/span>;<\/span> \/\/ \u81ea\u52d5\u751f\u6210\u30af\u30a8\u30ea <\/span>\r\nconst<\/span> res<\/span>:<\/span> GetPostQuery<\/span> =<\/span> API<\/span>.<\/span>graphql<\/span>(<\/span>graphqlOperation<\/span>(<\/span>getPost<\/span>,{<\/span>id<\/span>:<\/span>\"<\/span>XXX<\/span>\"<\/span>})).<\/span>data<\/span>;<\/span>\r\nconsole<\/span>.<\/span>log<\/span>(<\/span>res<\/span>.<\/span>__typename<\/span>)<\/span> \/\/ undefined<\/span>\r\n<\/code><\/pre>\n
\u5ffd\u7565\u5b83\u5e76\u4e0d\u4f1a\u9020\u6210\u5b9e\u9645\u4f24\u5bb3\uff0c\u4f46\u7c7b\u578b\u548c\u503c\u4e4b\u95f4\u7684\u5dee\u5f02\u4f1a\u4f7f\u5f00\u53d1\u6709\u4e9b\u6df7\u4e71\u3002<\/p>\n
\u95ee\u9898\uff1a\u53d8\u6210\u53ef\u9009\u9879\u7684<\/h4>\n
\u5982\u679c\u8fd9\u662f\u672c\u6765\u6b63\u786e\u7684\u4e8b\u60c5\uff0c\u53ef\u80fd\u6700\u597d\u4e0d\u8981\u5728\u610f\u3002\u4f46\u662f\uff0c\u5982\u679c\u53ea\u60f3\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u6570\u636e\u7c7b\u578b\uff0c\u53ef\u80fd\u4e5f\u6709\u4e00\u4e9b\u9700\u8981\u53bb\u9664\u7684\u60c5\u51b5\u3002<\/p>\n
import<\/span> API<\/span>,<\/span> {<\/span> graphqlOperation<\/span> }<\/span> from<\/span> '<\/span>@aws-amplify\/api<\/span>'<\/span>;<\/span>\r\nimport<\/span> getPost<\/span> as<\/span> queries<\/span> from<\/span> '<\/span>@\/graphql\/queries<\/span>'<\/span>;<\/span> \/\/ \u81ea\u52d5\u751f\u6210\u30af\u30a8\u30ea <\/span>\r\nconst<\/span> res<\/span>:<\/span> GetPostQuery<\/span> =<\/span> API<\/span>.<\/span>graphql<\/span>(<\/span>graphqlOperation<\/span>(<\/span>getPost<\/span>,{<\/span>id<\/span>:<\/span>\"<\/span>XXX<\/span>\"<\/span>})).<\/span>data<\/span>;<\/span>\r\nconsole<\/span>.<\/span>log<\/span>(<\/span>res<\/span>.<\/span>id<\/span>)<\/span> \/\/ error: res is possibly null<\/span>\r\n\/\/ Optional\u306a\u306e\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5b9f\u88c5\u304c\u5fc5\u8981<\/span>\r\nif<\/span>(<\/span>res<\/span>)<\/span> console<\/span>.<\/span>log<\/span>(<\/span>res<\/span>.<\/span>id<\/span>)<\/span> \/\/\u5bfe\u7b561<\/span>\r\nconsole<\/span>.<\/span>log<\/span>(<\/span>res<\/span>?.<\/span>id<\/span>)<\/span> \/\/ \u5bfe\u7b562<\/span>\r\n<\/code><\/pre>\n
\u6b65\u9aa42\uff08\u7f16\u8f91\u7c7b\u578b\u5b9a\u4e49\uff09<\/h2>\n
\u5728\u8003\u8651\u5230\u4e0a\u8ff0\u95ee\u9898\u7684\u57fa\u7840\u4e0a\uff0c\u4ee5\u4e0b\u6587\u7ae0\u5220\u9664\u4e86__typename\u548cOptional\u3002
\n\uff08\u5c3d\u7ba1\u5220\u9664\u4e86Optional\uff0c\u4f46\u5728\u4f7f\u7528\u65f6\u4ecd\u8981\u8fdb\u884c\u6b63\u786e\u7684\u7a7a\u503c\u68c0\u67e5\uff09
\n\u94fe\u63a5\uff1ahttps:\/\/medium.com\/@dantasfiles\/using-typescript-with-aws-amplify-api-3788d722869<\/p>\n
import<\/span> API<\/span> from<\/span> '<\/span>@aws-amplify\/api<\/span>'<\/span>;<\/span>\r\ntype<\/span> Post<\/span>=<\/span> Omit<\/span><<\/span>Exclude<\/span><<\/span>API<\/span>.<\/span>GetPostQuery<\/span>[<\/span>'<\/span>getPost<\/span>'<\/span>],<\/span> null<\/span>><\/span>,<\/span>\r\n                 '<\/span>__typename<\/span>'<\/span>><\/span>;<\/span>\r\n<\/code><\/pre>\n
\u6309\u7167\u987a\u5e8f\u89e3\u91ca\u3002
\nExclude<T,U> \u7684\u4f5c\u7528\u662f\u4ece\u7c7b\u578b T \u4e2d\u79fb\u9664\u53ef\u5206\u914d\u7ed9\u7c7b\u578b U \u7684\u5c5e\u6027\u3002
\nGetPostQuery[‘getPost’] \u662f {…} | null\uff0c\u56e0\u6b64\u8fd9\u5c06\u53d8\u6210 {…}\u3002
\nOmit<T,K> \u7684\u4f5c\u7528\u662f\u4ece\u7c7b\u578b T \u4e2d\u79fb\u9664\u5c5e\u6027 K\u3002
\n\u56e0\u6b64\u5c06\u4ece {…} \u4e2d\u79fb\u9664\u5c5e\u6027 __typename\u3002<\/p>\n
\u7ed3\u679c\u4f1a\u4ea7\u751f\u4ee5\u4e0b\u7684\u7c7b\u578b\u3002<\/p>\n
type<\/span> Post<\/span> =<\/span> {<\/span>\r\n   id<\/span>:<\/span> string<\/span>,<\/span>\r\n   titlte<\/span>:<\/span> string<\/span> |<\/span> null<\/span>,<\/span>\r\n   \u30fb\u30fb\u30fb<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u4e2a\u770b\u4e0a\u53bb\u5c31\u50cf\u662f\u7b80\u5355\u7684\u6570\u636e\u7c7b\u578b\u3002\u867d\u7136\u8fd9\u6837\u5df2\u7ecf\u53ef\u4ee5\u4e86\uff0c\u4f46\u8fd8\u6709\u4e00\u4e9b\u4ee4\u6211\u7a0d\u6709\u7591\u8651\u7684\u5730\u65b9\u3002<\/p>\n
\u95ee\u9898\uff1a\u6ca1\u6709\u8003\u8651\u5230\u591a\u4e2a\u6a21\u578b\u5408\u5e76\u7684\u60c5\u51b5\u3002<\/h4>\n
\u5982\u679c\u6709\u4e00\u4e2a\u6570\u636e\u6a21\u578b\uff0cPost\u62e5\u6709Comment\uff0c\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f<\/p>\n
type<\/span> Post<\/span> =<\/span> {<\/span>\r\n   id<\/span>:<\/span> string<\/span>,<\/span>\r\n   titlte<\/span>:<\/span> string<\/span> |<\/span> null<\/span>,<\/span>\r\n   comments<\/span>:<\/span> {<\/span>\r\n     __typename<\/span>:<\/span> \"<\/span>ModelCommentConnection<\/span>\"<\/span>,<\/span>\r\n     items<\/span>:<\/span> Array<\/span><<\/span>{<\/span>\r\n       __typename<\/span>:<\/span> \"<\/span>comment<\/span>\"<\/span>,<\/span>\r\n       id<\/span>:<\/span> string<\/span>,<\/span>\r\n       content<\/span>:<\/span> string<\/span>,<\/span>\r\n     }<\/span> |<\/span> null<\/span>><\/span> |<\/span> null<\/span>\r\n   }<\/span> |<\/span> null<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8bc4\u8bba\u4e2d__typename\u4fdd\u6301\u4e0d\u53d8\uff0c\u53d8\u6210\u53ef\u9009\u72b6\u6001\u3002<\/p>\n
\u6b65\u9aa43\uff08\u9012\u5f52\u7c7b\u578b\u5b9a\u4e49\u7684\u7f16\u8f91\uff09<\/h2>\n
\u6839\u636e\u4ee5\u4e0a\u5185\u5bb9\uff0c\u6211\u4eec\u5c06\u8fdb\u884c\u989d\u5916\u7684\u7c7b\u578b\u7f16\u8f91\u3002
\n\u601d\u8def\u662f\u5c06\u524d\u4e00\u6b65\u9aa4\u9012\u5f52\u5730\u5e94\u7528\u4e8e\u6bcf\u4e00\u5c42\u3002<\/p>\n
type<\/span> Deep<\/span><<\/span>T<\/span>><\/span> =<\/span> \r\n    T<\/span> extends<\/span> any<\/span>[]<\/span> ?<\/span> DeepOmitArray<\/span><<\/span>T<\/span>[<\/span>number<\/span>]<\/span>><\/span>:<\/span>\r\n    T<\/span> extends<\/span> object<\/span> ?<\/span> DeepOmitObject<\/span><<\/span>T<\/span>><\/span>:<\/span>\r\n    T<\/span>;<\/span>\r\ntype<\/span> DeepOmitArray<\/span><<\/span>T<\/span>><\/span> =<\/span> Array<\/span><<\/span>Omit<\/span><<\/span>Exclude<\/span><<\/span>Deep<\/span><<\/span>T<\/span>><\/span>,<\/span>null<\/span>><\/span>,<\/span>'<\/span>__typename<\/span>'<\/span>>><\/span>\r\ntype<\/span> DeepOmitObject<\/span><<\/span>T<\/span>><\/span> =<\/span> {<\/span>\r\n    [<\/span>P<\/span> in<\/span> keyof<\/span> Omit<\/span><<\/span>Exclude<\/span><<\/span>T<\/span>,<\/span>null<\/span>><\/span>,<\/span>'<\/span>__typename<\/span>'<\/span>><\/span>]:<\/span> Deep<\/span><<\/span>Omit<\/span><<\/span>Exclude<\/span><<\/span>T<\/span>,<\/span>null<\/span>><\/span>,<\/span>'<\/span>__typename<\/span>'<\/span>><\/span>[<\/span>P<\/span>]<\/span>><\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
Deep\u4f1a\u6839\u636e\u7c7b\u578bT\u7684\u5185\u5bb9\u6765\u786e\u5b9a\u7c7b\u578b\u3002
\n\u5b83\u5206\u4e3a\u6570\u7ec4\u3001\u5bf9\u8c61\u548c\u5176\u4ed6\u5206\u652f\u3002
\n\u5982\u679c\u662f\u6570\u7ec4\uff0c\u5219\u4e3aDeepOmitArray\u7c7b\u578b\u3002
\n\u5b83\u88ab\u8868\u793a\u4e3aArray<Omit<Exclude<Deep, null>,’__typename’>>\uff0c\u5b83\u4f1a\u5c06\u6570\u7ec4\u7684\u5185\u5bb9\u4f20\u9012\u7ed9Deep\uff0c\u5e76\u5bf9\u7ed3\u679c\u5e94\u7528\u7b2c\u4e8c\u6b65\u7684\u7c7b\u578b\u7f16\u8f91\u3002
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type<\/span> Post<\/span> =<\/span> {<\/span>\r\n   id<\/span>:<\/span> string<\/span>,<\/span>\r\n   titlte<\/span>:<\/span> string<\/span> |<\/span> null<\/span>,<\/span>\r\n   comments<\/span>:<\/span> {<\/span>\r\n     items<\/span>:<\/span> Array<\/span><<\/span>{<\/span>\r\n       id<\/span>:<\/span> string<\/span>,<\/span>\r\n       content<\/span>:<\/span> string<\/span>,<\/span>\r\n     }<\/span>><\/span>\r\n   }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
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\u6700\u540e<\/h2>\n
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\nhttps:\/\/medium.com\/@dantasfiles\/using-typescript-with-aws-amplify-api-3788d722869<\/p>\n","protected":false},"excerpt":{"rendered":"
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