Webpack捆绑的React应用中的node-mssql错误 [英] Errors with node-mssql in a webpack-bundled React app
问题描述
每当我尝试使用 node-mssql 库时,我的React应用程序都无法构建.在客户端执行此操作很重要,因为我必须从旧的IIS服务器提供此应用程序.在Webpack浏览器捆绑中执行似乎需要其他配置.也许是某种Polyfill?我在任何地方都找不到任何帮助-我真的可以使用一些建议.
My React app fails to build whenever I try to use the node-mssql library. It's important that I do this on the client side, since I have to serve this app from an old IIS server. It seems that executing in Webpack browser bundle requires additional configuration. Some kind of Polyfill maybe? I can't find any help on this anywhere -- I could really use some advice.
构建错误和警告为:
WARNING in ./~/mssql/lib/tds-fix.js
Module not found: Error: Cannot resolve module 'tds/package.json' in /Users/hills/upload-covers/node_modules/mssql/lib
@ ./~/mssql/lib/tds-fix.js 6:8-35
WARNING in ./~/mssql/lib/tds-fix.js
Module not found: Error: Cannot resolve module 'tds/lib/tds-constants.js' in /Users/hills/upload-covers/node_modules/mssql/lib
@ ./~/mssql/lib/tds-fix.js 13:4-39
WARNING in ./~/mssql/lib/tds-fix.js
Module not found: Error: Cannot resolve module 'tds' in /Users/hills/upload-covers/node_modules/mssql/lib
@ ./~/mssql/lib/tds-fix.js 14:4-18
ERROR in ./~/mssql/lib/msnodesql.js
Module not found: Error: Cannot resolve module 'msnodesql' in /Users/hills/upload-covers/node_modules/mssql/lib
@ ./~/mssql/lib/msnodesql.js 9:14-34
ERROR in ./~/mssql/lib/msnodesqlv8.js
Module not found: Error: Cannot resolve module 'msnodesqlv8' in /Users/hills/upload-covers/node_modules/mssql/lib
@ ./~/mssql/lib/msnodesqlv8.js 9:14-36
ERROR in ./~/mssql/lib/tds.js
Module not found: Error: Cannot resolve module 'tds' in /Users/hills/upload-covers/node_modules/mssql/lib
@ ./~/mssql/lib/tds.js 9:8-22
ERROR in ./~/tedious/lib/connection.js
Module not found: Error: Cannot resolve module 'net' in /Users/hills/upload-covers/node_modules/tedious/lib
@ ./~/tedious/lib/connection.js 25:13-27
ERROR in ./~/tedious/lib/instance-lookup.js
Module not found: Error: Cannot resolve module 'dgram' in /Users/hills/upload-covers/node_modules/tedious/lib
@ ./~/tedious/lib/instance-lookup.js 3:12-28
ERROR in ./~/tedious/lib/message-io.js
Module not found: Error: Cannot resolve module 'tls' in /Users/hills/upload-covers/node_modules/tedious/lib
@ ./~/tedious/lib/message-io.js 11:10-24
这是我的webpack配置:
Here is my webpack config:
var path = require('path');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
devtool: 'eval-source-map',
entry: [
'webpack-hot-middleware/client?reload=true',
path.join(__dirname, 'app/main.js')
],
output: {
path: path.join(__dirname, '/dist/'),
filename: '[name].js',
publicPath: '/'
},
plugins: [
new HtmlWebpackPlugin({
template: 'app/index.tpl.html',
inject: 'body',
filename: 'index.html'
}),
new webpack.optimize.OccurenceOrderPlugin(),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoErrorsPlugin(),
new webpack.DefinePlugin({
'process.env.NODE_ENV': JSON.stringify('development')
})
],
module: {
loaders: [{
test: /\.js?$/,
exclude: /node_modules/,
loader: 'babel',
query: {
"presets": ["react", "es2015", "stage-0", "react-hmre"]
}
}, {
test: /\.json?$/,
loader: 'json'
}, {
test: /\.css$/,
loader: 'style!css?modules&localIdentName=[name]---[local]---[hash:base64:5]'
}]
}
};
谢谢.
推荐答案
MSSQL服务器连接库不是客户端javascript库.即使您编写了自己的库,也绝对无法通过Web浏览器建立TCP SQL连接.
MSSQL server connection libraries are not client-side javascript libraries. There is absolutely no way you can make TCP SQL connections from a web browser, even if you wrote your own library.
出于安全原因,您永远都不想允许客户端访问SQL Server.您需要加速服务器端环境(例如Node/Express),才能向客户端应用程序公开API.
For security reasons, you would never want to allow client-side access to the SQL Server. You need to spin up server-side environment (e.g. Node/Express) to expose an API to the client applications.
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