Question

我已在C：\ Program File中成功安装了nodejs。通过检查两者的版本，Nodejs和npm也正常工作。

我使用的软件/硬件的说明和版本信息如下

操作系统： - Windows 7 Enterprise SP1,64位

RAM： - 4GB

Nodejs： - 版本7.4.0

npm： - 版本4.0.5

java： - 版本1.8.0_121

现在，当我尝试使用 npm install --save express 命令从cmd安装express时，会出现以下错误。

0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'install',
1 verbose cli   '--save',
1 verbose cli   'express' ]
2 info using npm@4.0.5
3 info using node@v7.4.0
4 silly loadCurrentTree Starting
5 silly install loadCurrentTree
6 silly install readLocalPackageData
7 silly fetchPackageMetaData express
8 silly fetchNamedPackageData express
9 silly mapToRegistry name express
10 silly mapToRegistry using default registry
11 silly mapToRegistry registry https://registry.npmjs.org/
12 silly mapToRegistry data Result {
12 silly mapToRegistry   raw: 'express',
12 silly mapToRegistry   scope: null,
12 silly mapToRegistry   escapedName: 'express',
12 silly mapToRegistry   name: 'express',
12 silly mapToRegistry   rawSpec: '',
12 silly mapToRegistry   spec: 'latest',
12 silly mapToRegistry   type: 'tag' }
13 silly mapToRegistry uri https://registry.npmjs.org/express
14 verbose request uri https://registry.npmjs.org/express
15 verbose request no auth needed
16 info attempt registry request try #1 at 7:15:42 PM
17 verbose request id 90eb0dc94f842d2f
18 http request GET https://registry.npmjs.org/express
19 info retry will retry, error on last attempt: Error: getaddrinfo EAI_AGAIN registry.npmjs.org:443
20 info attempt registry request try #2 at 7:15:52 PM
21 http request GET https://registry.npmjs.org/express
22 info retry will retry, error on last attempt: Error: getaddrinfo EAI_AGAIN registry.npmjs.org:443
23 info attempt registry request try #3 at 7:16:52 PM
24 http request GET https://registry.npmjs.org/express
25 silly fetchPackageMetaData Error: getaddrinfo EAI_AGAIN registry.npmjs.org:443
25 silly fetchPackageMetaData     at Object.exports._errnoException (util.js:1022:11)
25 silly fetchPackageMetaData     at errnoException (dns.js:33:15)
25 silly fetchPackageMetaData     at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)
25 silly fetchPackageMetaData  error for express { Error: getaddrinfo EAI_AGAIN registry.npmjs.org:443
25 silly fetchPackageMetaData     at Object.exports._errnoException (util.js:1022:11)
25 silly fetchPackageMetaData     at errnoException (dns.js:33:15)
25 silly fetchPackageMetaData     at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)
25 silly fetchPackageMetaData   code: 'EAI_AGAIN',
25 silly fetchPackageMetaData   errno: 'EAI_AGAIN',
25 silly fetchPackageMetaData   syscall: 'getaddrinfo',
25 silly fetchPackageMetaData   hostname: 'registry.npmjs.org',
25 silly fetchPackageMetaData   host: 'registry.npmjs.org',
25 silly fetchPackageMetaData   port: 443 }
26 silly rollbackFailedOptional Starting
27 silly rollbackFailedOptional Finishing
28 silly runTopLevelLifecycles Finishing
29 silly install printInstalled
30 verbose stack Error: getaddrinfo EAI_AGAIN registry.npmjs.org:443
30 verbose stack     at Object.exports._errnoException (util.js:1022:11)
30 verbose stack     at errnoException (dns.js:33:15)
30 verbose stack     at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)
31 verbose cwd D:\ExpressJS Apps\ExpressDemo
32 error Windows_NT 6.1.7601
33 error argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "--save" "express"
34 error node v7.4.0
35 error npm  v4.0.5
36 error code EAI_AGAIN
37 error errno EAI_AGAIN
38 error syscall getaddrinfo
39 error getaddrinfo EAI_AGAIN registry.npmjs.org:443
40 error If you need help, you may report this error at:
40 error     <https://github.com/npm/npm/issues>
41 verbose exit [ 1, true ]

我已经在堆栈溢出中搜索了它，并且还获得了它的解决方案，但是对于 linux操作系统。所以请不要将此问题标记为重复，因为 Windows操作系统没有针对此问题的解决方案

修改： -

当我试图在出现错误后运行npm install命令时

D:\ExpressJS Apps\ExpressDemo>npm install
npm WARN express-demo@1.0.0 No repository field.

Answer 1

在过去2天在互联网上搜索有关此问题的批次并咨询我的组织的IT专家团队和我的项目伙伴后，我终于解决了这个问题。

首先，我使用node.js开发应用程序并在我的组织中表达，这意味着我在公司防火墙后面工作。这就是我在问题部分提到上述问题的原因。所以，我只需按照以下步骤解决它

打开命令提示符并在cmd处按下以下三个命令。

npm set config registry "http://registry.npmjs.org/"
npm set config proxy "http://username:password@host:port/"
npm set config strict-ssl false

在命令提示符下输入3以上命令后，将在 C：\ user \ your_user_name 目录下创建 .npmrc 文件。

现在，我可以从命令行下载并安装所有必要的文件，包括 express.js 。

从Windows命令提示符

1 个答案: