当我在代理设置中没有http/http前缀时，即使代理主机和端口是正确的值，npm也会失败。只有在添加协议前缀后，它才能正常工作。

当我在代理设置中没有http/http前缀时，即使代理主机和端口是正确的值，npm也会失败。只有在添加协议前缀后，它才能正常工作。

vim ~ /。npmrc，并添加以下内容。不要忘记添加注册表部分，因为这在很多情况下会导致失败。

proxy=http://<proxy-url>:<port>
https-proxy=https://<proxy-url>:<port>
registry=http://registry.npmjs.org/

在curl的页面上有关于SSL和证书问题的很好的信息。 我的大部分答案都是基于那里的信息。

使用strict-ssl false是不好的做法，可能会产生问题。我们可以做的是添加由“中间人”证书注入的证书。

如何在Windows上解决这个问题:

Download the CA Certificates from curl based on Mozilla's CA bundle. You can also use curl's "firefox-db2pem.sh" shellscript to convert your local Firefox database. Go to a webpage using https, for example Stackoverflow in Chrome or Internet Explorer Click the lock icon, click View certificates or "Valid" in Chrome Navigate to the Certification path. The top certificate, or the root certificate is the one we want to extract. Click that certificate and then "view certificate" Click the second tab, "Details". Click "Copy to file". Pick the DER format and make note of where you save the file. Pick a suitable filename, like rootcert.cer If you have Git installed you will have openssl.exe. Otherwise, install git for windows at this stage. Most likely the openssl executable will be at C:\Program Files\git\usr\bin\openssl.exe. We will use openssl to convert the file to the PEM format we need for NPM to understand it. Convert the file you saved in step 5 by using this command: openssl x509 -inform DES -in **rootcert**.cer -out outcert.pem -text where rootcert is the filename of the certificate you saved in step 5. Open the outcert.pem in a text-editor smart enough to understand line-endings, so not notepad. Find -----BEGIN CERTIFICATE----- lots of characters -----END CERTIFICATE----- and copy all text between them and also including the BEGIN / END lines Now we will paste that content to the end of the CA Cert bundle made in step 1. So open the cacert.pem in your advanced texteditor. Go to the end of the file and paste the content from previous step to the end of file. (Preserve the empty line below what you just pasted) Copy the saved cabundle.pem to a suitable place. Eg your %userprofile% or ~. Make note of the location of the file. Now we will tell npm/yarn to use the new bundle. In a commandline, write npm config set cafile **C:\Users\username\cacert.pem** where C:\Users\username\cacert.pem is the path from step 10. Optionally: turn on strict-ssl again, npm config set strict-ssl true

唷!我们成功了!现在npm可以理解如何连接了。额外的好处是，您可以告诉curl使用相同的cabundle。pem，它也能理解HTTPs。

我的问题归结为我犯了一个愚蠢的错误。因为我很快有一天把我的代理放到一个windows *.bat文件(http_proxy, https_proxy和ftp_proxy)，我忘记转义url编码的域\用户(%5C)的特殊字符，密码有问号'?”(% 3 f)。也就是说，一旦您有了编码命令，不要忘记在bat文件命令中转义'%'。

我改变了

set http_proxy=http://domain%5Cuser:password%3F@myproxy:8080

to

set http_proxy=http://domain%%5Cuser:password%%3F@myproxy:8080

也许这是一个边缘情况，但希望它能帮助到一些人。

在我的情况下，我忘记在配置文件中设置“http://”(可以在C: \Users \ [USERNAME] \ .npmrc中找到)代理地址。所以我们不需要

proxy=http://[IPADDRESS]:[PORTNUMBER]
https-proxy=http://[IPADDRESS]:[PORTNUMBER]

我有

proxy=[IPADDRESS]:[PORTNUMBER]
https-proxy=[IPADDRESS]:[PORTNUMBER]

这当然没有工作，但错误消息也没有多大帮助…