Nuget~让包包带上自己的配置信息

我们知道一般开发组件之后，组件都有相关配置项，最常见的作法就是把它写到web.config里，而如果你将这个文件直接放到nuget里打包，在进行安装包包时，会提示你这个文件已经存在，不能去覆盖原来的config文件，这时，我们只能将配置信息写到别一个文本文件里，而使用者在安装包包后，还要手动将信息拷贝到自己的config文件，确实挺无奈的，没人愿意干这种重复的活！

解决这种现状

使用web.config.transform文件，将自己个性的信息写在里面，它将自动合并到现有config文件中

例如Microsoft.AspNet.WebApi.Core也有这个文件，Nuget如图

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内容如下

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.webServer>
    <handlers>
      <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />
      <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
      <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
      <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="" />
      <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="" />
      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
    </handlers>
  </system.webServer>
</configuration>

当我们建立VS api项目之后，它会自动从nuget服务器上下载包包，并将config文件与本地的文件合并，确实觉得挺实用的，也彻底告别了我们的复制的工作，呵呵！