Windows环境下npm install常见错误

Windows环境下npm install安装包依赖时，常出现一些错误，下面为个人解决办法：

错误一

缺少python环境：

G:\nodejs\moviesite\node_modules\bcrypt>if not defined npm_config_node_gyp (node
 "D:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\
node-gyp\bin\node-gyp.js" rebuild )  else (rebuild)
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYT
HON env variable.
gyp ERR! stack     at failNoPython (D:\Program Files\nodejs\node_modules\npm\nod
e_modules\node-gyp\lib\configure.js:103:14)
gyp ERR! stack     at D:\Program Files\nodejs\node_modules\npm\node_modules\node
-gyp\lib\configure.js:64:11
gyp ERR! stack     at FSReqWrap.oncomplete (evalmachine.<anonymous>:95:15)
gyp ERR! System Windows_NT 6.3.9600
gyp ERR! command "node" "D:\\Program Files\\nodejs\\node_modules\\npm\\node_modu
les\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd G:\nodejs\moviesite\node_modules\bcrypt
gyp ERR! node -v v0.12.2
gyp ERR! node-gyp -v v1.0.3
gyp ERR! not ok
npm ERR! Windows_NT 6.3.9600
npm ERR! argv "D:\\Program Files\\nodejs\\\\node.exe" "D:\\Program Files\\nodejs
\\node_modules\\npm\\bin\\npm-cli.js" "install" "bcrypt" "--save"
npm ERR! node v0.12.2
npm ERR! npm  v2.7.4
npm ERR! code ELIFECYCLE

npm ERR! bcrypt@0.8.3 install: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the bcrypt@0.8.3 install script 'node-gyp rebuild'.
npm ERR! This is most likely a problem with the bcrypt package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node-gyp rebuild
npm ERR! You can get their info via:
npm ERR!     npm owner ls bcrypt
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     G:\nodejs\moviesite\npm-debug.log

安装python解决，python(v2.7 recommended, v3.x.x is not supported) 
下载：http://www.python.org/ftp/python/2.7.3/python-2.7.3.msi

错误二：

在此解决方案中一次生成一个项目。若要启用并行生成，请添加“/m”开关。 
MSBUILD : error MSB3428: 未能加载 Visual C++ 组件“VCBuild.exe”。要解决此问题， 
1) 安装 .NET Fram 
ework 2.0 SDK；2) 安装 Microsoft Visual Studio 2005；或 3) 如果将该组件安装到了 
其他位置，请将其位置添加到系统 
路径中。 [G:\nodejs\moviesite\node_modules\bcrypt\build\binding.sln] 
gyp ERR! build error

如图：

需要安装Microsoft Visual Studio Express 2013 for Windows Desktop 
(版本应该不限制，我安装的是上边的版本)

安装成功，但是出现了警告，警告不影响bcrypt的使用