使用NPM安装时未找到Express模块 [英] Express module not found when installed with NPM

问题描述

当我尝试运行由express创建的app.js文件时，我收到以下错误：

When I try to run the app.js file created by express, I get the following error:

$ node app.js

node.js:134
        throw e; // process.nextTick error, or 'error' event on first tick
        ^
Error: Cannot find module 'express'
    at Function._resolveFilename (module.js:320:11)

当我输入'express --version'时，我得到一个2.3.3的返回语句。我用npm安装快递。我不得不使用这些说明手动做npm：

When I type in 'express --version' I get a return statement of 2.3.3. I used npm to install express. I had to manually make npm using these instructions:

git clone http://github.com/isaacs/npm.git
cd npm
sudo make install

错误是错误：找不到模块'express'。

安装npm和express后，我需要做些什么才能快速查看模块由npm创建？

Do I need to do something after installing npm and express in order to make express see the modules created by npm?

我的节点是版本：0.4.6
我的快照是版本：2.3.3
我的npm是版本：1.0。 6

My node is version: 0.4.6 My express is version: 2.3.3 My npm is version: 1.0.6

Express全球安装。我使用-g标志来安装它。

Express is installed globally. I used the -g flag to install it.

编辑：当我尝试node -e require.paths时，我得到：

When I try "node -e require.paths" I get:

['/home/user/.node_modules'，
'/home/user/.node_libraries'，
'/ usr / local / lib / node']

[ '/home/user/.node_modules', '/home/user/.node_libraries', '/usr/local/lib/node' ]

所以，节点没有检测到npm的安装。如何让节点检测到npm安装？

So, node isn't detecting the npm installation. How do I get node to detect the npm installation?

推荐答案

我有同样的问题。这对我来说很有效：

I had the same problem. This worked for me though:

看起来像npm（现在？）将节点模块安装到 / usr / local / lib / node_modules / 而不是 / usr / local / lib / node /

Seems like npm (now?) installs node modules to /usr/local/lib/node_modules/ and not /usr/local/lib/node/

我做的只是复制从node_modules到节点的所有内容： sudo cp -r / usr / local / lib / node_modules / * usr / local / lib / node / 现在似乎在为我工作。

What I did was simply to copy everything from node_modules to node: sudo cp -r /usr/local/lib/node_modules/* usr/local/lib/node/ and now it seems to be working for me.

希望这有助于您： - ）

Hope this helps you :-)

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