2021.11.25
//引入对象
const Koa = require('koa');
//引入内部方法或属性
// constant{方法或者属性名} = require('koa');
// 创建对象
const app = new Koa();
// response
app.use( ctx => {
ctx.body = 'Hello World';
});
// localhost：3000
app.listen(3000);
{
"name": "nodejs",
"version": "1.0.0",
"lockfileVersion": 1,
"requires": true,
"dependencies": {
"accepts": {
"version": "1.3.7",
"resolved": "https://registry.nlark.com/accepts/download/accepts-1.3.7.tgz",
"integrity": "sha1-UxvHJlF6OytB+FACHGzBXqq1B80=",
"requires": {
"mime-types": "~2.1.24",
"negotiator": "0.6.2"
}
},
"cache-content-type": {
"version": "1.0.1",
"resolved": "https://registry.nlark.com/cache-content-type/download/cache-content-type-1.0.1.tgz",
"integrity": "sha1-A1zeKwjuISn0qDFeqPAKANuhRTw=",
"requires": {
"mime-types": "^2.1.18",
"ylru": "^1.2.0"
}
},
"co": {
"version": "4.6.0",
"resolved": "https://registry.nlark.com/co/download/co-4.6.0.tgz?cache=0&sync_timestamp=1624608078028&other_urls=https%3A%2F%2Fregistry.nlark.com%2Fco%2Fdownload%2Fco-4.6.0.tgz",
"integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
},
"content-disposition": {
"version": "0.5.3",
"resolved": "https://registry.nlark.com/content-disposition/download/content-disposition-0.5.3.tgz",
"integrity": "sha1-4TDK9+cnkIfFYWwgB9BIVpiYT70=",
"requires": {
"safe-buffer": "5.1.2"
}
},
"content-type": {
"version": "1.0.4",
"resolved": "https://registry.nlark.com/content-type/download/content-type-1.0.4.tgz",
"integrity": "sha1-4TjMdeBAxyexlm/l5fjJruJW/js="
},
"cookies": {
"version": "0.8.0",
"resolved": "https://registry.nlark.com/cookies/download/cookies-0.8.0.tgz",
"integrity": "sha1-EpPOSzkXQKhAbjyYcOgoxLVPP5A=",
"requires": {
"depd": "~2.0.0",
"keygrip": "~1.1.0"
}
},
"debug": {
"version": "4.3.2",
"resolved": "https://registry.npmmirror.com/debug/download/debug-4.3.2.tgz?cache=0&sync_timestamp=1636300872595&other_urls=https%3A%2F%2Fregistry.npmmirror.com%2Fdebug%2Fdownload%2Fdebug-4.3.2.tgz",
"integrity": "sha1-8KScGKyHeeMdSgxgKd+3aHPHQos=",
"requires": {
"ms": "2.1.2"
}
},
"deep-equal": {
"version": "1.0.1",
"resolved": "https://registry.nlark.com/deep-equal/download/deep-equal-1.0.1.tgz",
"integrity": "sha1-9dJgKStmDghO/0zbyfCK0yR0SLU="
},
"delegates": {
"version": "1.0.0",
"resolved": "https://registry.nlark.com/delegates/download/delegates-1.0.0.tgz",
"integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
},
"depd": {
"version": "2.0.0",
"resolved": "https://registry.nlark.com/depd/download/depd-2.0.0.tgz",
"integrity": "sha1-tpYWPMdXVg0JzyLMj60Vcbeedt8="
},
"destroy": {
"version": "1.0.4",
"resolved": "https://registry.npm.taobao.org/destroy/download/destroy-1.0.4.tgz",
"integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
},
"ee-first": {
"version": "1.1.1",
"resolved": "https://registry.nlark.com/ee-first/download/ee-first-1.1.1.tgz",
"integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
},
"encodeurl": {
"version": "1.0.2",
"resolved": "https://registry.nlark.com/encodeurl/download/encodeurl-1.0.2.tgz",
"integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
},
"escape-html": {
"version": "1.0.3",
"resolved": "https://registry.nlark.com/escape-html/download/escape-html-1.0.3.tgz",
"integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
},
"fresh": {
"version": "0.5.2",
"resolved": "https://registry.nlark.com/fresh/download/fresh-0.5.2.tgz?cache=0&sync_timestamp=1618846949012&other_urls=https%3A%2F%2Fregistry.nlark.com%2Ffresh%2Fdownload%2Ffresh-0.5.2.tgz",
"integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac="
},
"has-symbols": {
"version": "1.0.2",
"resolved": "https://registry.nlark.com/has-symbols/download/has-symbols-1.0.2.tgz",
"integrity": "sha1-Fl0wcMADCXUqEjakeTMeOsVvFCM="
},
"has-tostringtag": {
"version": "1.0.0",
"resolved": "https://registry.nlark.com/has-tostringtag/download/has-tostringtag-1.0.0.tgz",
"integrity": "sha1-fhM4GKfTlHNPlB5zw9P5KR5liyU=",
"requires": {
"has-symbols": "^1.0.2"
}
},
"http-assert": {
"version": "1.5.0",
"resolved": "https://registry.nlark.com/http-assert/download/http-assert-1.5.0.tgz",
"integrity": "sha1-w4nM2HrBbtLfpiRv1zuSaqAOa48=",
"requires": {
"deep-equal": "~1.0.1",
"http-errors": "~1.8.0"
}
},
"http-errors": {
"version": "1.8.1",
"resolved": "https://registry.npmmirror.com/http-errors/download/http-errors-1.8.1.tgz?cache=0&sync_timestamp=1636932108220&other_urls=https%3A%2F%2Fregistry.npmmirror.com%2Fhttp-errors%2Fdownload%2Fhttp-errors-1.8.1.tgz",
"integrity": "sha512-Kpk9Sm7NmI+RHhnj6OIWDI1d6fIoFAtFt9RLaTMRlg/8w49juAStsrBgp0Dp4OdxdVbRIeKhtCUvoi/RuAhO4g==",
"requires": {
"depd": "~1.1.2",
"inherits": "2.0.4",
"setprototypeof": "1.2.0",
"statuses": ">= 1.5.0 < 2",
"toidentifier": "1.0.1"
},
"dependencies": {
"depd": {
"version": "1.1.2",
"resolved": "https://registry.nlark.com/depd/download/depd-1.1.2.tgz",
"integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak="
}
}
},
"inherits": {
"version": "2.0.4",
"resolved": "https://registry.npm.taobao.org/inherits/download/inherits-2.0.4.tgz",
"integrity": "sha1-D6LGT5MpF8NDOg3tVTY6rjdBa3w="
},
"is-generator-function": {
"version": "1.0.10",
"resolved": "https://registry.nlark.com/is-generator-function/download/is-generator-function-1.0.10.tgz",
"integrity": "sha1-8VWLrxrBfg3up8BBXEODUf8rPHI=",
"requires": {
"has-tostringtag": "^1.0.0"
}
},
"keygrip": {
"version": "1.1.0",
"resolved": "https://registry.nlark.com/keygrip/download/keygrip-1.1.0.tgz",
"integrity": "sha1-hxsWgdXhWcYqRFsMdLYV4JF+ciY=",
"requires": {
"tsscmp": "1.0.6"
}
},
"koa": {
"version": "2.13.4",
"resolved": "https://registry.npmmirror.com/koa/download/koa-2.13.4.tgz?cache=0&sync_timestamp=1634623957508&other_urls=https%3A%2F%2Fregistry.npmmirror.com%2Fkoa%2Fdownload%2Fkoa-2.13.4.tgz",
"integrity": "sha1-7lsMs54LgGnDjRFROcd0gz0yRi4=",
"requires": {
"accepts": "^1.3.5",
"cache-content-type": "^1.0.0",
"content-disposition": "~0.5.2",
"content-type": "^1.0.4",
"cookies": "~0.8.0",
"debug": "^4.3.2",
"delegates": "^1.0.0",
"depd": "^2.0.0",
"destroy": "^1.0.4",
"encodeurl": "^1.0.2",
"escape-html": "^1.0.3",
"fresh": "~0.5.2",
"http-assert": "^1.3.0",
"http-errors": "^1.6.3",
"is-generator-function": "^1.0.7",
"koa-compose": "^4.1.0",
"koa-convert": "^2.0.0",
"on-finished": "^2.3.0",
"only": "~0.0.2",
"parseurl": "^1.3.2",
"statuses": "^1.5.0",
"type-is": "^1.6.16",
"vary": "^1.1.2"
}
},
"koa-compose": {
"version": "4.1.0",
"resolved": "https://registry.npmmirror.com/koa-compose/download/koa-compose-4.1.0.tgz",
"integrity": "sha1-UHMGuTcZAdtBEhyBLpI9DWfT6Hc="
},
"koa-convert": {
"version": "2.0.0",
"resolved": "https://registry.nlark.com/koa-convert/download/koa-convert-2.0.0.tgz",
"integrity": "sha1-hqDETYHUBVG64i/uZwmQRXPupPU=",
"requires": {
"co": "^4.6.0",
"koa-compose": "^4.1.0"
}
},
"media-typer": {
"version": "0.3.0",
"resolved": "https://registry.npm.taobao.org/media-typer/download/media-typer-0.3.0.tgz",
"integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
},
"mime-db": {
"version": "1.51.0",
"resolved": "https://registry.npmmirror.com/mime-db/download/mime-db-1.51.0.tgz?cache=0&sync_timestamp=1636426024486&other_urls=https%3A%2F%2Fregistry.npmmirror.com%2Fmime-db%2Fdownload%2Fmime-db-1.51.0.tgz",
"integrity": "sha512-5y8A56jg7XVQx2mbv1lu49NR4dokRnhZYTtL+KGfaa27uq4pSTXkwQkFJl4pkRMyNFz/EtYDSkiiEHx3F7UN6g=="
},
"mime-types": {
"version": "2.1.34",
"resolved": "https://registry.npmmirror.com/mime-types/download/mime-types-2.1.34.tgz?cache=0&sync_timestamp=1636432244120&other_urls=https%3A%2F%2Fregistry.npmmirror.com%2Fmime-types%2Fdownload%2Fmime-types-2.1.34.tgz",
"integrity": "sha512-6cP692WwGIs9XXdOO4++N+7qjqv0rqxxVvJ3VHPh/Sc9mVZcQP+ZGhkKiTvWMQRr2tbHkJP/Yn7Y0npb3ZBs4A==",
"requires": {
"mime-db": "1.51.0"
}
},
"ms": {
"version": "2.1.2",
"resolved": "https://registry.npmmirror.com/ms/download/ms-2.1.2.tgz",
"integrity": "sha1-0J0fNXtEP0kzgqjrPM0YOHKuYAk="
},
"negotiator": {
"version": "0.6.2",
"resolved": "https://registry.npm.taobao.org/negotiator/download/negotiator-0.6.2.tgz",
"integrity": "sha1-/qz3zPUlp3rpY0Q2pkiD/+yjRvs="
},
"on-finished": {
"version": "2.3.0",
"resolved": "https://registry.npm.taobao.org/on-finished/download/on-finished-2.3.0.tgz",
"integrity": "sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=",
"requires": {
"ee-first": "1.1.1"
}
},
"only": {
"version": "0.0.2",
"resolved": "https://registry.nlark.com/only/download/only-0.0.2.tgz",
"integrity": "sha1-Kv3oTQPlC5qO3EROMGEKcCle37Q="
},
"parseurl": {
"version": "1.3.3",
"resolved": "https://registry.nlark.com/parseurl/download/parseurl-1.3.3.tgz",
"integrity": "sha1-naGee+6NEt/wUT7Vt2lXeTvC6NQ="
},
"safe-buffer": {
"version": "5.1.2",
"resolved": "https://registry.nlark.com/safe-buffer/download/safe-buffer-5.1.2.tgz?cache=0&sync_timestamp=1618847044058&other_urls=https%3A%2F%2Fregistry.nlark.com%2Fsafe-buffer%2Fdownload%2Fsafe-buffer-5.1.2.tgz",
"integrity": "sha1-mR7GnSluAxN0fVm9/St0XDX4go0="
},
"setprototypeof": {
"version": "1.2.0",
"resolved": "https://registry.npm.taobao.org/setprototypeof/download/setprototypeof-1.2.0.tgz",
"integrity": "sha1-ZsmiSnP5/CjL5msJ/tPTPcrxtCQ="
},
"statuses": {
"version": "1.5.0",
"resolved": "https://registry.nlark.com/statuses/download/statuses-1.5.0.tgz",
"integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
},
"toidentifier": {
"version": "1.0.1",
"resolved": "https://registry.npmmirror.com/toidentifier/download/toidentifier-1.0.1.tgz?cache=0&sync_timestamp=1636938515603&other_urls=https%3A%2F%2Fregistry.npmmirror.com%2Ftoidentifier%2Fdownload%2Ftoidentifier-1.0.1.tgz",
"integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="
},
"tsscmp": {
"version": "1.0.6",
"resolved": "https://registry.nlark.com/tsscmp/download/tsscmp-1.0.6.tgz",
"integrity": "sha1-hbmVg6w1iexL/vgltQAKqRHWBes="
},
"type-is": {
"version": "1.6.18",
"resolved": "https://registry.nlark.com/type-is/download/type-is-1.6.18.tgz",
"integrity": "sha1-TlUs0F3wlGfcvE73Od6J8s83wTE=",
"requires": {
"media-typer": "0.3.0",
"mime-types": "~2.1.24"
}
},
"vary": {
"version": "1.1.2",
"resolved": "https://registry.nlark.com/vary/download/vary-1.1.2.tgz",
"integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
},
"ylru": {
"version": "1.2.1",
"resolved": "https://registry.nlark.com/ylru/download/ylru-1.2.1.tgz",
"integrity": "sha1-9Xa2M0FUeYnB3nuiiHYJI7J/6E8="
}
}
}
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