nodejs npm 安装报错 无法安装 behind a proxy

npm ERR! Error: connect ECONNREFUSED
npm ERR!     at
errnoException (net.js:878:11)
npm ERR!     at
Object.afterConnect [as oncomplete] (net.js:869:19)
npm ERR!  {
[Error: connect ECONNREFUSED]
npm ERR!   code:
'ECONNREFUSED',
npm ERR!   errno:
'ECONNREFUSED',
npm ERR!   syscall:
'connect' }
npm ERR!
npm ERR! If you are behind a proxy, please make sure that the
npm ERR! 'proxy' config is set properly.  See:
'npm help config'

npm ERR! System Windows_NT 6.2.9200
npm ERR! command "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nod
ejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "nodemailer"
npm ERR! cwd C:\Users\yy
npm ERR! node -v v0.10.2
npm ERR! npm -v 1.2.15
npm ERR! syscall connect
npm ERR! code ECONNREFUSED
npm ERR! errno ECONNREFUSED
npm ERR! stack Error: connect ECONNREFUSED
npm ERR! stack     at
errnoException (net.js:878:11)
npm ERR! stack     at
Object.afterConnect [as oncomplete] (net.js:869:19)
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR!     C:\Users\yy\npm-debug.log
npm ERR! not ok code 0

这条错误，你的代理怎么怎么地，万恶了很久，解决其实很简单啊，npm可能是默认的proxy http://127.0.0.1.8087 $ npm config set proxy null
把代理去掉就行了