{"id":555282,"date":"2022-02-21T03:06:16","date_gmt":"2022-02-20T19:06:16","guid":{"rendered":"http:\/\/4563.org\/?p=555282"},"modified":"2022-02-21T03:06:16","modified_gmt":"2022-02-20T19:06:16","slug":"%e8%af%b7%e6%95%99%e5%90%8e%e7%ab%af%e4%b8%9a%e5%8a%a1%e9%80%bb%e8%be%91%e4%bb%a3%e7%a0%81%e5%a6%82%e4%bd%95%e5%88%86%e7%a6%bb-2","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=555282","title":{"rendered":"\u8bf7\u6559\u540e\u7aef\u4e1a\u52a1\u903b\u8f91\u4ee3\u7801\u5982\u4f55\u5206\u79bb"},"content":{"rendered":"
\n
\n
\n

\u8bf7\u6559\u540e\u7aef\u4e1a\u52a1\u903b\u8f91\u4ee3\u7801\u5982\u4f55\u5206\u79bb <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : px920906 <\/span> <\/i> 25<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

node+koa \uff0c\u6709\u8fd9\u6837\u4e00\u4e2a\u63a5\u53e3:<\/p>\n

router.post(   '\/order',   {...},    async ctx => {     const { body } = ctx.request     \/\/ \u4e00\u4e9b\u9700\u8981\u67e5\u8be2\u6570\u636e\u5e93\u7684\u53c2\u6570\u9a8c\u8bc1\u903b\u8f91\uff0c\u6bd4\u5982\uff1a     const item = await Item.findOne({ where: { id: body.id } })     if (!item) {       throw Error('item not existing')     }     \/\/ \u540e\u7eed\u903b\u8f91     const result = await createOrder(body)     ctx.body = result.id   } ) <\/code><\/pre>\n
createOrder<\/code>\u8fd9\u4e2a\u51fd\u6570\u56e0\u4e3a\u5176\u4ed6\u63a5\u53e3 \/\u903b\u8f91\u4e5f\u4f1a\u7528\u5230\u6240\u4ee5\u5355\u72ec\u62bd\u51fa\u6765\u4e86\uff0c\u4e8e\u662f\u4ea7\u751f\u4e2a\u95ee\u9898\uff1a \u51fd\u6570\u5185\u90e8\u4e5f\u6709\u7528\u5230\u67e5\u8be2Item<\/code>\u7684\u5730\u65b9\uff0c\u90a3\u8fd9\u6837\u7684\u8bdd\uff0c\/order<\/code>\u8fd9\u4e00\u4e2a\u63a5\u53e3\u5f97\u67e5\u8be2Item<\/code>\u4e24\u6b21\u3002\u4f8b\u5b50\u662f\u67e5\u4e00\u4e2a\uff0c\u67e5\u5217\u8868\u7684\u60c5\u51b5\u5c82\u4e0d\u662f\u66f4\u6d6a\u8d39\u3002<\/p>\n
\u62bd\u8c61\u51fa\u6765\u5927\u6982\u662f\uff1a\u5982\u4f55\u907f\u514d \u901a\u7528\u4e1a\u52a1\u903b\u8f91 \u4e0e \u8c03\u7528\u5b83\u7684 route \u4e4b\u95f4\u91cd\u590d\u76f8\u540c\u6570\u636e\u5e93\u67e5\u8be2\u64cd\u4f5c\uff1f<\/p>\n
\u6c42\u8d50\u6559\uff01\u8c22\u8c22\uff01<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (9<\/span>) <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : lscho <\/span>  <\/div>\n
     <\/i>    <\/span> <\/div>\n<\/p><\/div>\n
     createOrder \u589e\u52a0\u4e00\u4e2a\u53ef\u7a7a\u53c2\u6570 item \u5457\uff0c\u5b58\u5728\u5c31\u4e0d\u67e5\u6570\u636e\u5e93\uff0c\u4e0d\u5b58\u5728\u518d\u67e5\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : eason1874 <\/span>  <\/div>\n
     <\/i>    <\/span> <\/div>\n<\/p><\/div>\n
     createOrder \u4f20\u53c2 Item
    \u5982\u679c Item \u662f\u5fc5\u987b\u67e5\u8be2\u7684\uff0c\u7c7b\u4f3c List \u4e8e\u5217\u8868\u9875\uff0cPost \u4e8e\u6587\u7ae0\u9875\uff0c\u90a3\u4e5f\u53ef\u4ee5\u67e5\u8be2\u51fa\u6765\u653e\u5230\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf queried object \uff0c\u540e\u7eed\u903b\u8f91\u8981\u83b7\u53d6\u5f53\u524d\u67e5\u8be2\u5bf9\u8c61\u65f6\u8bfb\u53d6\u8fd9\u4e2a\u53d8\u91cf\u5c31\u884c <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u8cc7\u6df1\u5927\u4f6c : towave <\/span>  <\/div>\n
     <\/i>    <\/span> <\/div>\n<\/p><\/div>\n
     \u67e5\u8fd8\u662f\u8981\u67e5\u7684\uff0c\u4f60\u53ef\u4ee5\u5199\u6210\u4e2d\u95f4\u4ef6\u7684\u5f62\u5f0f\uff0c\u628a\u67e5\u6570\u636e\u5e93\u7684\u9a8c\u8bc1\u903b\u8f91\u5199\u5728\u4e2d\u95f4\u4ef6\u5c31\u4e0d\u7528\u91cd\u590d\u8fd9\u4e48\u591a\u6b21\u4e86\uff0c\u5e94\u8be5\u662f\u53ef\u884c\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : ElmerZhang <\/span>  <\/div>\n
     <\/i>    <\/span> <\/div>\n<\/p><\/div>\n
     \u4e00\u79cd\u601d\u8def\u662f\u5982\u4e0a\u6240\u8bf4\uff0citem \u4f20\u53c2\u7ed9 createOrder \u3002
    \u53e6\u5916\u4e00\u79cd\u601d\u8def\uff1aitem \u5fc5\u987b\u5b58\u5728\u662f\u5426\u4e5f\u662f createOrder \u6210\u529f\u7684\u5fc5\u8981\u6761\u4ef6\uff1f\u5982\u679c\u662f\u7684\u8bdd\uff0c\u8fd9\u4e2a\u5224\u65ad\u53ef\u4ee5\u653e\u5230 createOrder \u5185\u90e8\u53bb\u505a\uff0c\u8fd9\u6837\u4e5f\u80fd\u907f\u514d\u5176\u4ed6\u8c03\u7528 createOrder \u7684\u5730\u65b9\u4e5f\u63d0\u524d\u53bb\u67e5\u8be2 item \u662f\u5426\u5b58\u5728\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : zjsxwc <\/span>  <\/div>\n
     <\/i>    <\/span> <\/div>\n<\/p><\/div>\n
     orm \u6258\u7ba1\u7684\u8bdd\uff0c\u5982\u679c findone \u7684 id \u76f8\u540c\u53ef\u4ee5\u9009\u62e9\u76f4\u63a5\u5f15\u7528\u5185\u5b58\u4e2d\u7684 item \u5bf9\u8c61\uff0c\u800c\u4e0d\u53bb\u6570\u636e\u5e93\u4e2d\u67e5\u8be2 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u8cc7\u6df1\u5927\u4f6c : OutOfMemery <\/span>  <\/div>\n
     <\/i>    <\/span> <\/div>\n<\/p><\/div>\n
     Item \u91cc\u9762\u5c01\u88c5\u6821\u9a8c\u903b\u8f91,\u80fd\u88ab\u521b\u5efa\u51fa\u6765\u5c31\u662f\u5408\u6cd5\u7684,\u8c03\u7528\u65f6\u53ea\u7ba1\u7528,\u8fd9\u6837\u5c31\u80fd\u5c06\u901a\u7528\u4e1a\u52a1\u903b\u8f91\u548c\u5176\u4ed6\u4e1a\u52a1\u903b\u8f91\u5206\u5f00 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : libook <\/span>  <\/div>\n
     <\/i>    <\/span> <\/div>\n<\/p><\/div>\n
     \u5176\u5b9e\u91cd\u590d\u67e5\u4e24\u6b21\u7684\u7684\u95ee\u9898\u8fd8\u597d\uff0c\u9876\u591a\u662f\u6d6a\u8d39\u4e00\u90e8\u5206\u6570\u636e\u5e93\u6027\u80fd\u800c\u5df2\uff0c\u4e0d\u4f1a\u5bfc\u81f4 bug \uff1b\u76ee\u524d\u7684\u5b9e\u73b0\u662f\u6709\u53ef\u80fd\u4ea7\u751f bug \u7684\uff0c\u5373\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b createOrder \u6267\u884c\u7684\u65f6\u5019\u4e0d\u4e00\u5b9a\u786e\u4fdd item \u4e00\u5b9a\u5b58\u5728\uff0c\u5047\u8bbe item \u6709\u53ef\u80fd\u5728\u201cconst item = await Item.findOne({ where: { id: body.id } })\u201d\u6267\u884c\u540e\u3001\u201ccreateOrder\u201d\u6267\u884c\u524d\u88ab\u5176\u4ed6\u8fdb\u7a0b\u7684\u4e1a\u52a1\u903b\u8f91\u5220\u9664\uff0c\u90a3\u4e48\u6b64\u65f6 createOrder \u5c31\u4f1a\u5728 item \u4e0d\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\u6267\u884c\uff1b\u82e5 createOrder \u5185\u90e8\u505a\u4e86 item \u7684\u5b58\u5728\u6027\u9a8c\u8bc1\uff0c\u6b64\u65f6\u4f1a\u629b\u51fa\u5f02\u5e38\uff1b\u82e5\u672a\u505a item \u7684\u5b58\u5728\u6027\u9a8c\u8bc1\uff0c\u5219\u4f1a\u4ea7\u751f\u810f\u6570\u636e\u3002\u540c\u7406 createOrder \u5185\u90e8\u7684\u591a\u9879\u6570\u636e\u5e93\u64cd\u4f5c\u5982\u679c\u4e0d\u80fd\u786e\u4fdd\u4e8b\u52a1\u6027\uff08\u539f\u5b50\u6027\uff09\u7684\u8bdd\uff0c\u4e5f\u4f1a\u6709\u540c\u6837\u7684\u95ee\u9898\u3002
    \u9488\u5bf9\u9898\u4e3b\u7684\u4f8b\u5b50\u6765\u8bf4\uff0citem \u7684\u5b58\u5728\u6027\u9a8c\u8bc1\u4ec5\u4e3a createOrder \u7684\u987a\u5229\u6267\u884c\u800c\u670d\u52a1\uff0c\u90a3\u4e48\u53ef\u4ee5\u628a\u8fd9\u4e2a\u8fc7\u7a0b\u5e76\u5165 createOrder \u5185\u90e8\uff0c\u5728 createOrder \u5185\u90e8\u67e5\u8be2 item \u4e0d\u5b58\u5728\u5219\u629b\u51fa\u5f02\u5e38\uff0c\u540c\u65f6\u4f7f\u7528\u4e8b\u52a1\u786e\u4fdd\u591a\u8868\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : px920906 <\/span>  <\/div>\n
     <\/i>    <\/span> <\/div>\n<\/p><\/div>\n
     @libook \u7684\u786e\uff0c\u540e\u6765\u6211\u4e5f\u60f3\u5230\u4e86\uff0c\u4f46\u8fd9\u6837\u7684\u8bdd createOrder \u629b\u51fa\u7684\u5f02\u5e38\u600e\u6837\u6bd4\u8f83\u597d\u5730\u8f6c\u5316\u5230\u5ba2\u6237\u7aef\u5f02\u5e38\u5462\uff1f\u89c1 append \u7b2c\u4e09\u6761 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : libook <\/span>  <\/div>\n
     <\/i>    <\/span> <\/div>\n<\/p><\/div>\n
     \u4f60 throw error \u7684\u65f6\u5019\u662f\u53ef\u4ee5\u5148 new \u4e00\u4e2a Error \u5bf9\u8c61\uff0c\u7136\u540e\u7ed9\u8fd9\u4e2a\u5bf9\u8c61\u585e\u81ea\u5df1\u7684\u81ea\u5b9a\u4e49\u5b57\u6bb5\uff0c\u7136\u540e router \u91cc catch \u5230\u8fd9\u4e2a error \u4e4b\u540e\u62ff\u4f60\u81ea\u5b9a\u4e49\u5b57\u6bb5\u770b\u4e00\u773c\uff0c\u7136\u540e\u518d\u6839\u636e\u5f53\u524d router \u7684\u60c5\u51b5\u51b3\u5b9a\u5982\u4f55\u8fd4\u56de response \u4fe1\u606f\u3002\u8fd9\u79cd\u505a\u6cd5\u4f1a\u628a HTTP \u534f\u8bae\u5c42\u548c\u4e1a\u52a1\u903b\u8f91\u5c42\u533a\u5206\u5f00\uff0c\u4f7f\u5f97 createOrder \u53ef\u4ee5\u88ab\u591a\u4e2a router \u590d\u7528\uff0c\u6bcf\u4e2a router \u53c8\u80fd\u6839\u636e\u81ea\u5df1\u7684\u60c5\u51b5\u6765\u81ea\u5b9a\u4e49\u8fd4\u56de\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    \u8bf7\u6559\u540e\u7aef\u4e1a\u52a1\u903b\u8f91\u4ee3\u7801\u5982\u4f55\u5206\u79bb \u8cc7\u6df1…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/555282"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=555282"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/555282\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=555282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=555282"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=555282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}