{"id":47519,"date":"2024-01-13T11:48:11","date_gmt":"2022-12-01T19:16:34","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%ad%a6%e4%b9%a0graphql%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%ab%af%ef%bc%88%e7%ac%ac%e4%ba%94%e9%83%a8%e5%88%86%ef%bc%89-%e5%bc%95%e5%85%a5%e8%87%aa%e5%ae%9a%e4%b9%89%e6%a0%87%e9%87%8f%e7%b1%bb%e5%9e%8b\/"},"modified":"2024-05-04T18:12:59","modified_gmt":"2024-05-04T10:12:59","slug":"%e5%ad%a6%e4%b9%a0graphql%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%ab%af%ef%bc%88%e7%ac%ac%e4%ba%94%e9%83%a8%e5%88%86%ef%bc%89-%e5%bc%95%e5%85%a5%e8%87%aa%e5%ae%9a%e4%b9%89%e6%a0%87%e9%87%8f%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%ad%a6%e4%b9%a0graphql%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%ab%af%ef%bc%88%e7%ac%ac%e4%ba%94%e9%83%a8%e5%88%86%ef%bc%89-%e5%bc%95%e5%85%a5%e8%87%aa%e5%ae%9a%e4%b9%89%e6%a0%87%e9%87%8f%e7%b1%bb%e5%9e%8b\/","title":{"rendered":"\u5b66\u4e60GraphQL\u670d\u52a1\u5668\u7aef\uff08\u7b2c\u4e94\u90e8\u5206\uff09-\u5f15\u5165\u81ea\u5b9a\u4e49\u6807\u91cf\u7c7b\u578b"},"content":{"rendered":"<p>\u4f60\u597d\u3002<\/p>\n<p>\u7b2c\u4e94\u90e8\u5206\u8bb2\u8ff0\u7684\u662f\u5173\u4e8e\u201c\u5f15\u5165\u81ea\u5b9a\u4e49Scala\u7c7b\u578b\u201d\u7684\u5185\u5bb9\u3002<\/p>\n<h1>\u5173\u4e8e\u8fd9\u4e00\u7ae0<\/h1>\n<p>\u5728GraphQL\u67e5\u8be2\u4e2d\uff0c\u8fd4\u56de\u7684\u5b57\u6bb5\u5fc5\u987b\u5168\u90e8\u4e3a\u6807\u91cf\u7c7b\u578b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">query<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">user<\/span><span class=\"p\">(<\/span><span class=\"n\">name<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"hsaki\"<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">id<\/span> <span class=\"err\">#<\/span> <span class=\"n\">ID\u578b<\/span><span class=\"p\">(<\/span><span class=\"n\">\u30b9\u30ab\u30e9\u578b<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">name<\/span> <span class=\"err\">#<\/span> <span class=\"n\">\u6587\u5b57\u5217\u578b<\/span><span class=\"p\">(<\/span><span class=\"n\">\u30b9\u30ab\u30e9<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">projectV2<\/span><span class=\"p\">(<\/span><span class=\"n\">number<\/span><span class=\"o\">:<\/span> <span class=\"m\">1<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"n\">title<\/span> <span class=\"err\">#<\/span> <span class=\"n\">\u6587\u5b57\u5217\u578b<\/span><span class=\"p\">(<\/span><span class=\"n\">\u30b9\u30ab\u30e9<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5728Go\u8bed\u8a00\u4e2d\uff0c\u5185\u7f6e\u4e86\u4e94\u4e2a\u53d8\u91cf\uff0c\u6bcf\u4e2a\u53d8\u91cf\u90fd\u5bf9\u5e94\u7740\u76f8\u5e94\u7684\u5408\u9002\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Int: \u7b26\u53f7\u3042\u308a32bit\u6574\u6570<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Float: \u7b26\u53f7\u3042\u308a\u500d\u7cbe\u5ea6\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Boolean: true\u307e\u305f\u306ffalse<\/ul>\n<\/li>\n<\/ul>\n<p>String: UTF\u20108\u306e\u6587\u5b57\u5217<br \/>\nID: \u5b9f\u614b\u3068\u3057\u3066\u306fString\u3067\u3059\u304c\u3001unique identifier\u3068\u3057\u3066\u306e\u6a5f\u80fd\u3092\u6301\u3063\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u3042\u308c\u3070\u3053\u306eID\u578b\u306b\u3059\u308b\u306e\u304c\u671b\u307e\u3057\u3044\u3067\u3059\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u9664\u4e86\u8fd9\u4e2a\u4e4b\u5916\uff0c\u8fd8\u4f1a\u6709\u5176\u4ed6\u9700\u8981\u81ea\u5df1\u5b9a\u4e49\u548c\u51c6\u5907\u6807\u91cf\u7c7b\u578b\u7684\u573a\u666f\u5b58\u5728\u3002<br \/>\n\u5728\u672c\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u89e3\u91ca\u5982\u4f55\u5f15\u5165\u8fd9\u4e9b\u81ea\u5b9a\u4e49\u6807\u91cf\u7c7b\u578b\u3002<\/p>\n<h1>\u81ea\u5b9a\u4e49\u6807\u91cf\u7684\u5177\u4f53\u4f8b\u3002<\/h1>\n<p>\u6211\u5c06\u4ece\u5f53\u524d\u4f7f\u7528\u7684GraphQL\u67b6\u6784\u4e2d\u4ecb\u7ecd\u4f7f\u7528\u81ea\u5b9a\u4e49\u6807\u91cf\u7684\u5730\u65b9\u3002<\/p>\n<h2>\u5177\u4f53\u4f8b\u4e00\uff1a\u65e5\u671f\u65f6\u95f4<\/h2>\n<p>\u5728\u5b9a\u4e49\u4e86DateTime\u7c7b\u578b\u7684\u60c5\u51b5\u4e0b\uff0c\u5b83\u88ab\u7528\u4e8eRepository\u5bf9\u8c61\u7684createdAt\u5b57\u6bb5\u7b49\uff0c\u8868\u793a\u65e5\u671f\u548c\u65f6\u95f4\u4fe1\u606f\u3002<\/p>\n<p>schema.graphqls\u7684\u7ffb\u8bd1: \u6a21\u5f0f.graphqls<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">scalar<\/span> <span class=\"n\">DateTime<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Repository<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Node<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"n\">createdAt<\/span><span class=\"p\">:<\/span> <span class=\"n\">DateTime<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u5728 gqlgen\u4e0a\u81ea\u52d5\u751f\u6210\u4ee3\u78bc\u6642\u4e26\u4e0d\u9032\u884c\u4efb\u4f55\u8a2d\u7f6e\uff0c\u5c0d\u65bc DateTime \u578b\u5225\u7684 Go \u7d50\u69cb\u9ad4\u5b57\u6bb5\u5c07\u8b8a\u70ba string \u578b\u5225\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Repository<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"n\">CreatedAt<\/span>    <span class=\"kt\">string<\/span>    <span class=\"s\">`json:\"createdAt\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u80fd\u5728Go\u8bed\u8a00\u4e2d\u5c06\u8fd9\u4e2a\u8f6c\u6362\u4e3atime.Time\u7c7b\u578b\u5c06\u975e\u5e38\u4fbf\u5229\u3002\u8fd9\u5c31\u662f\u5f15\u5165\u81ea\u5b9a\u4e49\u6807\u91cf\u7c7b\u578b\u7684\u52a8\u673a\u3002<\/p>\n<h2>\u5177\u4f53\u4f8b2\uff1a\u7edf\u4e00\u8d44\u6e90\u6807\u8bc6\u7b26\uff08URI\uff09<\/h2>\n<p>\u9664\u4e86DateTime\u7c7b\u578b\u4e4b\u5916\uff0c\u8fd8\u5b9a\u4e49\u4e86\u4e00\u79cd\u79f0\u4e3aURI\u7c7b\u578b\u7684\u81ea\u5b9a\u4e49\u6807\u91cf\u7c7b\u578b\uff0c\u7528\u4e8e\u8868\u793aIssue\u548cPR\u7684URL\u3002<\/p>\n<p>schema.graphqls \u7684\u53e6\u4e00\u79cd\u8bf4\u6cd5\u662f\u4ec0\u4e48\uff1f<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">scalar<\/span> <span class=\"n\">URI<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Issue<\/span> <span class=\"k\">implements<\/span> <span class=\"n\">Node<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">url<\/span><span class=\"p\">:<\/span> <span class=\"n\">URI<\/span><span class=\"p\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u6ca1\u6709\u7279\u522b\u7684\u8bbe\u7f6e\uff0c\u8fd9\u4e5f\u4f1a\u5728Go\u7aef\u88ab\u5904\u7406\u4e3a\u5b57\u7b26\u4e32\u7c7b\u578b\u3002\u6211\u5e0c\u671b\u5c06\u5176\u8f6c\u6362\u4e3aurl.URL\u7c7b\u578b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Issue<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"n\">URL<\/span>    <span class=\"kt\">string<\/span>    <span class=\"s\">`json:\"url\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u81ea\u5b9a\u4e49Scala\u7684\u5b9e\u73b0<\/h1>\n<p>\u8981\u4fee\u6539Go\u7c7b\u578b\u4ee5\u4e0e\u5728GraphQL\u6a21\u5f0f\u4e2d\u5b9a\u4e49\u7684\u81ea\u5b9a\u4e49\u6807\u91cf\u7c7b\u578b\u76f8\u5bf9\u5e94\uff0c\u6709\u4ee5\u4e0b\u4e09\u79cd\u65b9\u6cd5\uff1a<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u7528\u610f\u3055\u308c\u305f\u30ab\u30b9\u30bf\u30e0\u30b9\u30ab\u30e9\u5bfe\u5fdc\u30ed\u30b8\u30c3\u30af\u3092\u4f7f\u3046<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u72ec\u81ea\u578b\u306bMarshalGQL\/UnmarshalGQL\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>MarshalXxx\/UnmarshalXxx\u95a2\u6570\u3092\u5b9a\u7fa9\u3059\u308b<\/p>\n<h2>\u9009\u98791 &#8211; \u4f7f\u7528\u7b2c\u4e09\u65b9\u5e93\u4e2d\u63d0\u4f9b\u7684\u81ea\u5b9a\u4e49\u6807\u91cf\u517c\u5bb9\u7c7b\u578b\u7684\u65b9\u6cd5<\/h2>\n<h3>\u5b9e\u65bd\u65b9\u5f0f (sh\u00ed sh\u012b sh\u00ec)<\/h3>\n<p>\u5728 github.com\/99designs\/gqlgen \u4e0a\uff0c\u5df2\u7ecf\u63d0\u4f9b\u4e86\u5e38\u7528\u7684\u81ea\u5b9a\u4e49\u6807\u91cf\u7684\u903b\u8f91\u5904\u7406\u3002<br \/>\n\u5305\u62ec\u5c06\u81ea\u5b9a\u4e49\u5b9a\u4e49\u7684\u6807\u91cf\u4e0e Go \u7684 time.Time \u7c7b\u578b\u76f8\u5339\u914d\u7684\u903b\u8f91\u4e5f\u4e0d\u4f8b\u5916\u3002<\/p>\n<p>\u4e3a\u4e86\u5c06\u5f53\u524d\u6a21\u5f0f\u4e2d\u7684DateTime\u7c7b\u578b\u8f6c\u6362\u4e3aGo\u7684time.Time\u7c7b\u578b\uff0c\u60a8\u53ef\u4ee5\u5728gqlgen\u7684\u914d\u7f6e\u6587\u4ef6gqlgen.yml\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u8bbe\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">models<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">ID<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">model<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"s\">github.com\/99designs\/gqlgen\/graphql.ID<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"s\">github.com\/99designs\/gqlgen\/graphql.Int<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"s\">github.com\/99designs\/gqlgen\/graphql.Int64<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"s\">github.com\/99designs\/gqlgen\/graphql.Int32<\/span>\r\n  <span class=\"na\">Int<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">model<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"s\">github.com\/99designs\/gqlgen\/graphql.Int<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"s\">github.com\/99designs\/gqlgen\/graphql.Int64<\/span>\r\n      <span class=\"pi\">-<\/span> <span class=\"s\">github.com\/99designs\/gqlgen\/graphql.Int32s<\/span>\r\n<span class=\"na\">+  DateTime<\/span><span class=\"pi\">:<\/span>\r\n<span class=\"na\">+    model<\/span><span class=\"pi\">:<\/span>\r\n<span class=\"s\">+      - github.com\/99designs\/gqlgen\/graphql.Time<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u4fee\u6539\u4e86gqlgen.yml\u4e4b\u540e\uff0c\u6267\u884cgqlgen generate\u547d\u4ee4\uff0c\u5e94\u8be5\u53ef\u4ee5\u786e\u8ba4\u751f\u6210\u7684\u6a21\u578b\u7c7b\u578b\u5728models_gen.go\u4e2d\u5df2\u7ecf\u53d1\u751f\u4e86\u4ee5\u4e0b\u7684\u53d8\u5316\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Repository<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n<span class=\"o\">-<\/span>\t<span class=\"n\">CreatedAt<\/span>    <span class=\"kt\">string<\/span>                 <span class=\"s\">`json:\"createdAt\"`<\/span>\r\n<span class=\"o\">+<\/span>\t<span class=\"n\">CreatedAt<\/span>    <span class=\"n\">time<\/span><span class=\"o\">.<\/span><span class=\"n\">Time<\/span>              <span class=\"s\">`json:\"createdAt\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h3>\u5728github.com\/99designs\/gqlgen\u4e0a\u63d0\u4f9b\u7684\u81ea\u5b9a\u4e49\u6807\u91cf\u652f\u6301\u7c7b\u578b\u3002<\/h3>\n<p>\u7c7b\u4f3c\u4e8e `github.com\/99designs\/gqlgen\/graphql.Time` \u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728 gqlgen.yml \u4e2d\u6307\u5b9a\u6765\u6539\u53d8\u81ea\u5b9a\u4e49\u6807\u91cf\u7684 Go \u7c7b\u578b\uff0c\u8fd8\u6709\u5176\u4ed6\u7684\u673a\u5236\u5b58\u5728\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d7f1b913a08637a6a5830\/35-0.png\" alt=\"Screenshot 2023-11-06 at 8.18.36 PM.png\" \/><\/div>\n<h2>\u9009\u98791: \u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684MarshalGQL\/UnmarshalGQL\u65b9\u6cd5<\/h2>\n<p>\u5982\u679c\u4f60\u60f3\u8ba9\u81ea\u5b9a\u4e49\u7684\u6807\u91cf\u7c7b\u578b\u9002\u5e94github.com\/99designs\/gqlgen\u6ca1\u6709\u51c6\u5907\u597d\u7684\u7c7b\u578b\uff0c\u6bd4\u5982URI\u7c7b\u578b\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u4e5f\u662f\u5b58\u5728\u7684\u3002<\/p>\n<p>\u6a21\u5f0f.graphqls<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">scalar<\/span> <span class=\"n\">URI<\/span>\r\n<\/code><\/pre>\n<p>\u5e0c\u671b\u4f7fGo\u8bed\u8a00\u7684\u7ed3\u6784\u4f53\u4e0eGraphQL\u7684\u81ea\u5b9a\u4e49\u6807\u91cf\u7c7b\u578b\u76f8\u5bf9\u5e94\uff0c\u5fc5\u987b\u6ee1\u8db3graphql.Marshaler\u63a5\u53e3\u548cgraphql.Unmarshaler\u63a5\u53e3\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Marshaler<\/span> <span class=\"k\">interface<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"n\">MarshalGQL<\/span><span class=\"p\">(<\/span><span class=\"n\">w<\/span> <span class=\"n\">io<\/span><span class=\"o\">.<\/span><span class=\"n\">Writer<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">type<\/span> <span class=\"n\">Unmarshaler<\/span> <span class=\"k\">interface<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"n\">UnmarshalGQL<\/span><span class=\"p\">(<\/span><span class=\"n\">v<\/span> <span class=\"k\">interface<\/span><span class=\"p\">{})<\/span> <span class=\"kt\">error<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8981\u5c06\u81ea\u5b9a\u4e49\u6807\u91cf\u7c7b\u578bURI\u4e0e\u672c\u6b21\u5b9a\u4e49\u7684MyURL\u7c7b\u578b\u5bf9\u5e94\u8d77\u6765\uff0c\u9996\u5148\u9700\u8981\u5728MyURL\u7c7b\u578b\u4e2d\u5b9e\u73b0MarshalGQL\/UnmarshalGQL\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">MyURL<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">URL<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/ MarshalGQL implements the graphql.Marshaler interface<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">u<\/span> <span class=\"n\">MyURL<\/span><span class=\"p\">)<\/span> <span class=\"n\">MarshalGQL<\/span><span class=\"p\">(<\/span><span class=\"n\">w<\/span> <span class=\"n\">io<\/span><span class=\"o\">.<\/span><span class=\"n\">Writer<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"n\">io<\/span><span class=\"o\">.<\/span><span class=\"n\">WriteString<\/span><span class=\"p\">(<\/span><span class=\"n\">w<\/span><span class=\"p\">,<\/span> <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Sprintf<\/span><span class=\"p\">(<\/span><span class=\"s\">`\"%s\"`<\/span><span class=\"p\">,<\/span> <span class=\"n\">u<\/span><span class=\"o\">.<\/span><span class=\"n\">URL<\/span><span class=\"o\">.<\/span><span class=\"n\">String<\/span><span class=\"p\">()))<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c\">\/\/ UnmarshalGQL implements the graphql.Unmarshaler interface<\/span>\r\n<span class=\"k\">func<\/span> <span class=\"p\">(<\/span><span class=\"n\">u<\/span> <span class=\"o\">*<\/span><span class=\"n\">MyURL<\/span><span class=\"p\">)<\/span> <span class=\"n\">UnmarshalGQL<\/span><span class=\"p\">(<\/span><span class=\"n\">v<\/span> <span class=\"k\">interface<\/span><span class=\"p\">{})<\/span> <span class=\"kt\">error<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"k\">switch<\/span> <span class=\"n\">v<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">v<\/span><span class=\"o\">.<\/span><span class=\"p\">(<\/span><span class=\"k\">type<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"k\">case<\/span> <span class=\"kt\">string<\/span><span class=\"o\">:<\/span>\r\n\t\t<span class=\"k\">if<\/span> <span class=\"n\">result<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">Parse<\/span><span class=\"p\">(<\/span><span class=\"n\">v<\/span><span class=\"p\">);<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n\t\t\t<span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n\t\t<span class=\"p\">}<\/span> <span class=\"k\">else<\/span> <span class=\"p\">{<\/span>\r\n\t\t\t<span class=\"n\">u<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">MyURL<\/span><span class=\"p\">{<\/span><span class=\"o\">*<\/span><span class=\"n\">result<\/span><span class=\"p\">}<\/span>\r\n\t\t<span class=\"p\">}<\/span>\r\n\t\t<span class=\"k\">return<\/span> <span class=\"no\">nil<\/span>\r\n\t<span class=\"k\">case<\/span> <span class=\"p\">[]<\/span><span class=\"kt\">byte<\/span><span class=\"o\">:<\/span>\r\n\t\t<span class=\"n\">result<\/span> <span class=\"o\">:=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">URL<\/span><span class=\"p\">{}<\/span>\r\n\t\t<span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">result<\/span><span class=\"o\">.<\/span><span class=\"n\">UnmarshalBinary<\/span><span class=\"p\">(<\/span><span class=\"n\">v<\/span><span class=\"p\">);<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n\t\t\t<span class=\"k\">return<\/span> <span class=\"n\">err<\/span>\r\n\t\t<span class=\"p\">}<\/span>\r\n\t\t<span class=\"n\">u<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">MyURL<\/span><span class=\"p\">{<\/span><span class=\"o\">*<\/span><span class=\"n\">result<\/span><span class=\"p\">}<\/span>\r\n\t\t<span class=\"k\">return<\/span> <span class=\"no\">nil<\/span>\r\n\t<span class=\"k\">default<\/span><span class=\"o\">:<\/span>\r\n\t\t<span class=\"k\">return<\/span> <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"%T is not a url.URL\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">v<\/span><span class=\"p\">)<\/span>\r\n\t<span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5728gqlgen.yml\u6587\u4ef6\u4e2d\u914d\u7f6e\u4f7f\u7528\u521a\u521a\u521b\u5efa\u7684MyURL\u7c7b\u578b\uff0c\u5e76\u8fd0\u884cgqlgen generate\u547d\u4ee4\u91cd\u65b0\u751f\u6210\u4ee3\u7801\uff0c\u53ef\u4ee5\u786e\u8ba4\u5229\u7528\u4e86URI\u7c7b\u578b\u7684Issue.URL\u5b57\u6bb5\u7684\u5b9a\u4e49\u5df2\u7ecf\u53d1\u751f\u4e86\u53d8\u5316\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">models<\/span><span class=\"pi\">:<\/span>\r\n<span class=\"na\">+  URI<\/span><span class=\"pi\">:<\/span>\r\n<span class=\"na\">+    model<\/span><span class=\"pi\">:<\/span>\r\n<span class=\"s\">+      - github.com\/saki-engineering\/graphql-sample\/graph\/model.MyURL<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Issue<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n<span class=\"o\">-<\/span>\t<span class=\"n\">URL<\/span>          <span class=\"kt\">string<\/span>                   <span class=\"s\">`json:\"url\"`<\/span>\r\n<span class=\"o\">+<\/span>\t<span class=\"n\">URL<\/span>          <span class=\"n\">MyURL<\/span>                    <span class=\"s\">`json:\"url\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u9009\u98791\uff1a\u7b2c\u4e09\u79cd\u65b9\u6cd5-\u81ea\u5b9a\u4e49MarshalXxx\/UnmarshalXxx\u51fd\u6570\u3002<\/h2>\n<p>\u5bf9\u4e8e\u65b9\u6cd52\uff0c\u7531\u4e8e\u81ea\u5b9a\u4e49\u4e86\u540d\u4e3aMyURL\u7684\u7c7b\u578b\u6765\u6620\u5c04\u81ea\u5b9a\u4e49\u6807\u91cfURI\u7c7b\u578b\uff0c\u56e0\u6b64\u53ef\u4ee5\u81ea\u7531\u5730\u6dfb\u52a0MarshalGQL\/UnmarshalGQL\u65b9\u6cd5\u3002<br \/>\n\u7136\u800c\uff0c\u5982\u679c\u60f3\u5c06\u81ea\u5b9a\u4e49\u6807\u91cfURI\u7c7b\u578b\u6620\u5c04\u5230\u6807\u51c6\u5305\u5185\u7684url.URL\u7c7b\u578b\uff0c\u65b9\u6cd52\u662f\u65e0\u6cd5\u4f7f\u7528\u7684\u3002<br \/>\n\u8fd9\u662f\u56e0\u4e3a\u65e0\u6cd5\u4e3a\u5df2\u7ecf\u5728\u6807\u51c6\u5305net\/url\u4e2d\u5b9a\u4e49\u7684\u73b0\u6709\u7c7b\u578burl.URL\u6dfb\u52a0\u65b9\u6cd5\u5b9e\u73b0\u3002<\/p>\n<p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5b58\u5728\u7740\u65e0\u6cd5\u6839\u636e\u81ea\u5df1\u7684\u5224\u65ad\u6dfb\u52a0MarshalGQL\/UnmarshalGQL\u65b9\u6cd5\u7684\u73b0\u6709\u7b2c\u4e09\u65b9\u5305\u578b\u548c\u6807\u51c6\u5305\u578b\u7684\u6a21\u5f0f\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u9700\u8981\u51c6\u5907MarshalXxx\/UnmarshalXxx\u51fd\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">func<\/span> <span class=\"n\">MarshalURI<\/span><span class=\"p\">(<\/span><span class=\"n\">u<\/span> <span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">URL<\/span><span class=\"p\">)<\/span> <span class=\"n\">graphql<\/span><span class=\"o\">.<\/span><span class=\"n\">Marshaler<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"k\">return<\/span> <span class=\"n\">graphql<\/span><span class=\"o\">.<\/span><span class=\"n\">WriterFunc<\/span><span class=\"p\">(<\/span><span class=\"k\">func<\/span><span class=\"p\">(<\/span><span class=\"n\">w<\/span> <span class=\"n\">io<\/span><span class=\"o\">.<\/span><span class=\"n\">Writer<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n\t\t<span class=\"n\">io<\/span><span class=\"o\">.<\/span><span class=\"n\">WriteString<\/span><span class=\"p\">(<\/span><span class=\"n\">w<\/span><span class=\"p\">,<\/span> <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Sprintf<\/span><span class=\"p\">(<\/span><span class=\"s\">`\"%s\"`<\/span><span class=\"p\">,<\/span> <span class=\"n\">u<\/span><span class=\"o\">.<\/span><span class=\"n\">String<\/span><span class=\"p\">()))<\/span>\r\n\t<span class=\"p\">})<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">UnmarshalURI<\/span><span class=\"p\">(<\/span><span class=\"n\">v<\/span> <span class=\"k\">interface<\/span><span class=\"p\">{})<\/span> <span class=\"p\">(<\/span><span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">URL<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"k\">switch<\/span> <span class=\"n\">v<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">v<\/span><span class=\"o\">.<\/span><span class=\"p\">(<\/span><span class=\"k\">type<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"k\">case<\/span> <span class=\"kt\">string<\/span><span class=\"o\">:<\/span>\r\n\t\t<span class=\"n\">u<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">Parse<\/span><span class=\"p\">(<\/span><span class=\"n\">v<\/span><span class=\"p\">)<\/span>\r\n\t\t<span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n\t\t\t<span class=\"k\">return<\/span> <span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">URL<\/span><span class=\"p\">{},<\/span> <span class=\"n\">err<\/span>\r\n\t\t<span class=\"p\">}<\/span>\r\n\t\t<span class=\"k\">return<\/span> <span class=\"o\">*<\/span><span class=\"n\">u<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span>\r\n\t<span class=\"k\">case<\/span> <span class=\"p\">[]<\/span><span class=\"kt\">byte<\/span><span class=\"o\">:<\/span>\r\n\t\t<span class=\"n\">u<\/span> <span class=\"o\">:=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">URL<\/span><span class=\"p\">{}<\/span>\r\n\t\t<span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">u<\/span><span class=\"o\">.<\/span><span class=\"n\">UnmarshalBinary<\/span><span class=\"p\">(<\/span><span class=\"n\">v<\/span><span class=\"p\">);<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n\t\t\t<span class=\"k\">return<\/span> <span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">URL<\/span><span class=\"p\">{},<\/span> <span class=\"n\">err<\/span>\r\n\t\t<span class=\"p\">}<\/span>\r\n\t\t<span class=\"k\">return<\/span> <span class=\"o\">*<\/span><span class=\"n\">u<\/span><span class=\"p\">,<\/span> <span class=\"no\">nil<\/span>\r\n\t<span class=\"k\">default<\/span><span class=\"o\">:<\/span>\r\n\t\t<span class=\"k\">return<\/span> <span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">URL<\/span><span class=\"p\">{},<\/span> <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Errorf<\/span><span class=\"p\">(<\/span><span class=\"s\">\"%T is not a url.URL\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">v<\/span><span class=\"p\">)<\/span>\r\n\t<span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u5b9a\u4e49\u4e86MarshalURI\/UnmarshalURI\u51fd\u6570\u540e\uff0c\u53ea\u9700\u5728gqlgen.yml\u4e2d\u6309\u7167\u4ee5\u4e0b\u8bbe\u7f6e\u5e76\u91cd\u65b0\u751f\u6210\u4ee3\u7801\uff0c\u5c31\u53ef\u4ee5\u5c06\u81ea\u5b9a\u4e49\u7c7b\u578bURI\u4e0e\u6807\u51c6\u5305\u4e2d\u7684url.URL\u7c7b\u578b\u6210\u529f\u5173\u8054\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"na\">models<\/span><span class=\"pi\">:<\/span>\r\n<span class=\"na\">+  URI<\/span><span class=\"pi\">:<\/span>\r\n<span class=\"na\">+    model<\/span><span class=\"pi\">:<\/span>\r\n<span class=\"pi\">-<\/span>      <span class=\"pi\">-<\/span> <span class=\"s\">github.com\/saki-engineering\/graphql-sample\/graph\/model.MyURL<\/span>\r\n<span class=\"s\">+      - github.com\/saki-engineering\/graphql-sample\/graph\/model.URI<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">type<\/span> <span class=\"n\">Issue<\/span> <span class=\"k\">struct<\/span> <span class=\"p\">{<\/span>\r\n<span class=\"o\">-<\/span>\t<span class=\"n\">URL<\/span>          <span class=\"kt\">string<\/span>                   <span class=\"s\">`json:\"url\"`<\/span>\r\n<span class=\"o\">+<\/span>\t<span class=\"n\">URL<\/span>          <span class=\"n\">url<\/span><span class=\"o\">.<\/span><span class=\"n\">URL<\/span>                  <span class=\"s\">`json:\"url\"`<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u4e0b\u4e00\u4e2a\u90e8\u5206<\/h1>\n<p>\u4e0b\u9762\u662f\u6709\u5173\u201c\u89e3\u51b3\u65b9\u6848\u7684\u5b9e\u65bd-\u5e94\u7528\u7bc7\u201d\u7684\u5185\u5bb9\u3002<\/p>\n<p>\u4eca\u5929\u5c31\u5230\u8fd9\u91cc\u5427\u3002<\/p>\n<p>\u8bf7\u591a\u5173\u7167\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f60\u597d\u3002 \u7b2c\u4e94\u90e8\u5206\u8bb2\u8ff0\u7684\u662f\u5173\u4e8e\u201c\u5f15\u5165\u81ea\u5b9a\u4e49Scala\u7c7b\u578b\u201d\u7684\u5185\u5bb9\u3002 \u5173\u4e8e\u8fd9\u4e00\u7ae0 \u5728GraphQL\u67e5\u8be2\u4e2d\uff0c\u8fd4\u56de\u7684\u5b57 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-47519","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5b66\u4e60GraphQL\u670d\u52a1\u5668\u7aef\uff08\u7b2c\u4e94\u90e8\u5206\uff09-\u5f15\u5165\u81ea\u5b9a\u4e49\u6807\u91cf\u7c7b\u578b - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5b66\u4e60graphql\u670d\u52a1\u5668\u7aef\uff08\u7b2c\u4e94\u90e8\u5206\uff09-\u5f15\u5165\u81ea\u5b9a\u4e49\u6807\u91cf\u7c7b\u578b\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5b66\u4e60GraphQL\u670d\u52a1\u5668\u7aef\uff08\u7b2c\u4e94\u90e8\u5206\uff09-\u5f15\u5165\u81ea\u5b9a\u4e49\u6807\u91cf\u7c7b\u578b\" \/>\n<meta property=\"og:description\" content=\"\u4f60\u597d\u3002 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