{"id":352,"date":"2022-02-24T09:45:27","date_gmt":"2022-02-24T01:45:27","guid":{"rendered":"http:\/\/gjweb.top\/?p=352"},"modified":"2022-02-24T09:45:28","modified_gmt":"2022-02-24T01:45:28","slug":"1-koa%e5%85%a5%e9%97%a8%e7%ac%94%e8%ae%b0%e6%b1%87%e6%80%bb","status":"publish","type":"post","link":"https:\/\/gjweb.top\/?p=352","title":{"rendered":"1. koa\u5165\u95e8\u7b14\u8bb0\u6c47\u603b"},"content":{"rendered":"\n<ul class=\"wp-block-list\"><li>\u9879\u76ee\u521b\u5efa<\/li><li>\u5e38\u7528\u4e2d\u95f4\u4ef6\u5904\u7406\u8bf7\u6c42\u65b9\u5f0f<\/li><li>\u8def\u7531\u8fdb\u9636<\/li><li>\u9879\u76ee\u4e2d\u5404\u4f9d\u8d56\u5305\u7248\u672c\u7ba1\u7406<\/li><li>\u5176\u4ed6\u4e2d\u95f4\u4ef6<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u9879\u76ee\u521b\u5efa\">\u9879\u76ee\u521b\u5efa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5\u4f9d\u8d56\u548c\u521b\u5efajkoa\u9879\u76ee<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>npm init -y <br>npm install -S koa<br>npm install -S koa-router<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f16\u5199\u7b2c\u4e00\u4e2ahello world<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const koa = require(\"koa\")<br>const koaRouter = require(\"koa-router\")<br>const app = new koa()<br>const router = new koaRouter()<br>router.get(\"\/api\", async (ctx)=&gt;{<br> &nbsp; &nbsp;ctx.body = \"hello api\"<br>})<br>router.get(\"\/index\", async (ctx)=&gt;{<br> &nbsp; &nbsp;ctx.body = \"hello index\"<br>}<br>app.use(router.routes())<br>app.use(router.allowedMethods())<br>app.listen(3000)<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u5e38\u7528\u4e2d\u95f4\u4ef6\u5904\u7406\u8bf7\u6c42\u65b9\u5f0f\u548c\u8de8\u57df\u95ee\u9898\">\u5e38\u7528\u4e2d\u95f4\u4ef6\u5904\u7406\u8bf7\u6c42\u65b9\u5f0f\u548c\u8de8\u57df\u95ee\u9898<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b89\u88c5\u4f9d\u8d56<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>npm install -S koa-body @koa\/cors<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>koa-body : \u534f\u8bae\u89e3\u6790\u5668 (\u5177\u4f53\u81ea\u5b9a\u4e49\u914d\u5408\u53c2\u6570,\u67e5\u770bNPM\u5b98\u65b9\u6587\u6863)<\/li><li>@koa\/cors :\u7528\u4e8e\u89e3\u51b3\u8de8\u57df\u95ee\u9898 (\u5177\u4f53\u81ea\u5b9a\u4e49\u914d\u5408\u53c2\u6570,\u67e5\u770bNPM\u5b98\u65b9\u6587\u6863)<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>...<br>const koaBody = require(\"koa-body\")<br>const cors = require(\"@koa\/cors\")<br>...<br>\u200b<br>app.use(koaBody())<br>app.use(cors())<br>...<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u8def\u7531\u8fdb\u9636\">\u8def\u7531\u8fdb\u9636<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u9879\u76ee\u6a21\u5757\u5316\u533a\u5206\">\u9879\u76ee\u6a21\u5757\u5316\u533a\u5206<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\u9879\u76ee\u76ee\u5f55<br>    -src<br>        -api \/\/ \u7528\u4e8e\u5b58\u653e\u4e1a\u52a1\u7684\u56de\u8c03\u51fd\u6570<br>        -router \/\/ \u7528\u6765\u5b58\u653e\u8def\u7531\u7684\u76f8\u5173\u6587\u4ef6<br>        -index.js \/\/ koa\u7684\u6574\u5408\u6587\u4ef6.\u76f8\u5f53\u4e8evue\u4e2dmain.js<br>    -package-lock.json<br>    -package.json<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u8def\u7531\u538b\u7f29\">\u8def\u7531\u538b\u7f29<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b89\u88c5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>npm install koa-combine-routers -S<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 src\/api \u4e0b\u9762\u521b\u5efa\u521b\u5efa demo.js \u7528\u4e8e\u5b58\u653e\u4e1a\u52a1\u7684\u903b\u8f91\u4ee3\u7801<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class demoCombint {<br> &nbsp; &nbsp;constructor(){}<br> &nbsp;  const demo = (ctx)=&gt;{<br> &nbsp; &nbsp; &nbsp; &nbsp;ctx.body = \"this is demo\"<br> &nbsp;  }<br>}<br>module.exports = new demoCombint()<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 src \/ router \u4e0b\u9762\u521b\u5efa demoRouter.js \u7528\u4e8e\u5b58\u50a8\u5173\u4e8edemo\u6a21\u5757\u7684\u8def\u7531\u6a21\u5757<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const koaRouter = require(\"koa-router\")<br>const demo = require(\"..\/api\/demoRouter\")<br>const router = new KoaRouter()<br>router.get(\"\/demo\",demo)<br>module.exports = router<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 src \/ router \u4e0b\u9762\u521b\u5efa routes.js \u7528\u4e8e\u6574\u5408\u8def\u7531\u6a21\u5757\u5316<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const Router = require('koa-router')<br>const combineRouters = require('koa-combine-routers')<br>const demoRouter = require(\".\/demoRouter\")<br>const router = combineRouters(demoRouter)<br>module.exports = router<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u540e\u5728 src \/ index \u9879\u76ee\u4e0b\u6784\u5efa\u6574\u4f53\u7684\u9879\u76ee<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const Koa = require(\"koa\")<br>const app = new Koa()<br>const router = require(\".\/router\/routes\")<br>app.use(router())<br>app.listen(3000)<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u5b9e\u73b0\u70ed\u52a0\u8f7d\">\u5b9e\u73b0\u70ed\u52a0\u8f7d<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>npm i nodemon -S<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 package.json \u4e2d\u914d\u7f6e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\"script\":{<br> &nbsp; &nbsp;\"start\":\"npx nodemon src\/index.js\"<br>}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u9879\u76ee\u4e2d\u5404\u4f9d\u8d56\u5305\u7248\u672c\u7ba1\u7406\">\u9879\u76ee\u4e2d\u5404\u4f9d\u8d56\u5305\u7248\u672c\u7ba1\u7406<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>npm i npm-check-updates -g<br>ncu  \/\/ \u68c0\u67e5\u9879\u76ee\u4f9d\u8d56\u662f\u5426\u66f4\u65b0<br>ncu -u \/\/ \u66f4\u65b0\u4f9d\u8d56\u9879\u7248\u672c,\u53ea\u662f\u5728package.json\u4e2d\u66f4\u6539,\u9700\u8981\u91cd\u65b0 install<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u5176\u4ed6\u4e2d\u95f4\u4ef6\">\u5176\u4ed6\u4e2d\u95f4\u4ef6<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u7528\u4e8e\u89e3\u51b3koa\u5b89\u5168\u95ee\u9898\">\u7528\u4e8e\u89e3\u51b3koa\u5b89\u5168\u95ee\u9898<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>npm install koa-helmet -S<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>...<br>const helmet = require(\"koa-helmet\")<br>app.use(helmet())<br>...<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u7528\u4e8e\u9759\u6001\u8d44\u6e90\u8bbf\u95ee\">\u7528\u4e8e\u9759\u6001\u8d44\u6e90\u8bbf\u95ee<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>npm i koa-static -S<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>...<br>const static = require(\"koa-static\")<br>const path = require(\"path\")<br>...<br>app.use(static(path.join(__dirname,\"..\/public\")))<br>...<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u6574\u5408-koa-\u4e2d\u95f4\u4ef6\u4f9d\u8d56\">\u6574\u5408 koa \u4e2d\u95f4\u4ef6\u4f9d\u8d56<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>npm i koa-compase -S<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u6cd5\u8be6\u89c1 npm \u5b98\u65b9\u6587\u6863<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u538b\u7f29\u4e2d\u95f4\u4ef6\">\u538b\u7f29\u4e2d\u95f4\u4ef6<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>npm i koa-compress -S<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u6cd5\u8be6\u89c1 npm \u5b98\u65b9\u6587\u6863<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9879\u76ee\u521b\u5efa \u5e38\u7528\u4e2d\u95f4\u4ef6\u5904\u7406\u8bf7\u6c42\u65b9\u5f0f \u8def\u7531\u8fdb\u9636 \u9879\u76ee\u4e2d\u5404\u4f9d\u8d56\u5305\u7248\u672c\u7ba1\u7406 \u5176\u4ed6\u4e2d\u95f4\u4ef6 \u9879\u76ee\u521b\u5efa \u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5\u4f9d\u8d56 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42],"tags":[],"class_list":["post-352","post","type-post","status-publish","format-standard","hentry","category-koa"],"_links":{"self":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=352"}],"version-history":[{"count":1,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/352\/revisions"}],"predecessor-version":[{"id":354,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/352\/revisions\/354"}],"wp:attachment":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=352"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}