通过npm安装ExpressJS时出错

Question

当我尝试运行"npm安装-g快递“和"npm安装-g快速生成器”时，我遇到了一个问题。以下是两者的错误消息。我已经能够安装快递在过去使用package.json，但不是通过npm。有什么主意吗？：

"npm安装-g快递“：

npm http GET https://registry.npmjs.org/express
npm http 304 https://registry.npmjs.org/express
npm ERR! error rolling back Error: EACCES, unlink '/usr/local/lib/node_modules/express'
npm ERR! error rolling back  express@4.3.1 { [Error: EACCES, unlink '/usr/local/lib/node_modules/express']
npm ERR! error rolling back   errno: 3,
npm ERR! error rolling back   code: 'EACCES',
npm ERR! error rolling back   path: '/usr/local/lib/node_modules/express' }
npm ERR! Error: EACCES, unlink '/usr/local/lib/node_modules/express'
npm ERR!  { [Error: EACCES, unlink '/usr/local/lib/node_modules/express']
npm ERR!   errno: 3,
npm ERR!   code: 'EACCES',
npm ERR!   path: '/usr/local/lib/node_modules/express' }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! System Darwin 13.2.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "-g" "express"
npm ERR! cwd /Users/user/Desktop/Projects/node
npm ERR! node -v v0.10.28
npm ERR! npm -v 1.4.9
npm ERR! path /usr/local/lib/node_modules/express
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, unlink '/usr/local/lib/node_modules/express'
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /Users/user/Desktop/Projects/node/npm-debug.log
npm ERR! not ok code 0

"npm安装-g快递生成器“：

npm http GET https://registry.npmjs.org/express-generator
npm http 200 https://registry.npmjs.org/express-generator
npm http GET https://registry.npmjs.org/express-generator/-/express-generator-4.2.0.tgz
npm http 200 https://registry.npmjs.org/express-generator/-/express-generator-4.2.0.tgz
npm ERR! error rolling back Error: EACCES, unlink '/usr/local/lib/node_modules/express-generator'
npm ERR! error rolling back  express-generator@4.2.0 { [Error: EACCES, unlink '/usr/local/lib/node_modules/express-generator']
npm ERR! error rolling back   errno: 3,
npm ERR! error rolling back   code: 'EACCES',
npm ERR! error rolling back   path: '/usr/local/lib/node_modules/express-generator' }
npm ERR! Error: EACCES, unlink '/usr/local/lib/node_modules/express-generator'
npm ERR!  { [Error: EACCES, unlink '/usr/local/lib/node_modules/express-generator']
npm ERR!   errno: 3,
npm ERR!   code: 'EACCES',
npm ERR!   path: '/usr/local/lib/node_modules/express-generator' }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! System Darwin 13.2.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "-g" "express-generator"
npm ERR! cwd /Users/user/Desktop/Projects/node
npm ERR! node -v v0.10.28
npm ERR! npm -v 1.4.9
npm ERR! path /usr/local/lib/node_modules/express-generator
npm ERR! code EACCES
npm ERR! errno 3
npm ERR! stack Error: EACCES, unlink '/usr/local/lib/node_modules/express-generator'
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /Users/user/Desktop/Projects/node/npm-debug.log
npm ERR! not ok code 0

Answer 1

你和sudo试过了吗？看起来，当前用户没有访问/usr/local/lib的权限。

顺便说一句，您现在希望为项目生成器全局安装express-generator，而不再是全局安装express包。

Answer 2

这是许可问题..。

如果不使用sudo，则使用此命令行。

sudo chown -R `whoami` ~/.npm

npm throws error without sudo

这个链接是对你最好的回答。

Answer 3

以管理员身份运行cmd，然后重新安装它。对我起作用了。