C# 如何使用.net core 3.1中的ConfigurationBulder绑定到配置类
我想使用C# 如何使用.net core 3.1中的ConfigurationBulder绑定到配置类,c#,.net-core,.net-core-configuration,C#,.net Core,.net Core Configuration,我想使用ConfigurationBuidler读取我的appsettings.json文件。我看不出我做错了什么 我的档案是 { "comment": "this gets copied to bin\\debug on build. the app updates the copy. However to remember the settings you need to paste them here", "col1Width": "344" } 我的考试失败了 [TestMet
ConfigurationBuidler
读取我的appsettings.json
文件。我看不出我做错了什么
我的档案是
{
"comment": "this gets copied to bin\\debug on build. the app updates the copy. However to remember the settings you need to paste them here",
"col1Width": "344"
}
我的考试失败了
[TestMethod]
public void TestMethod1()
{
var configuration = Helper.LoadConfiguration("appsettings.json");
Assert.IsTrue(configuration.Properties.Keys.Contains("col1Width")); // fails here
}
我的助手班是
public static class Helper
{
public static ConfigurationBuilder LoadConfiguration(string filename)
{
var configuration = new ConfigurationBuilder();
var currentDirectory = System.IO.Directory.GetCurrentDirectory();
configuration.SetBasePath(currentDirectory);
configuration.AddJsonFile(path: filename, optional: false, reloadOnChange: true);
configuration.Build();
return configuration;
}
}
[更新]
根据马可指给我的博文,我更正了问题标题并更新了代码,如下所示
只有.Bind
不可用
public static class Helper
{
public static FeedReadConfiguration GetApplicationConfiguration( )
{
var configuration = new FeedReadConfiguration();
var currentDirectory = System.IO.Directory.GetCurrentDirectory();
var iConfig = GetIConfigurationRoot(currentDirectory);
iConfig
.GetSection("FeedRead")
.Bind(configuration); // Not available
return configuration;
}
public static IConfigurationRoot GetIConfigurationRoot(string outputPath)
{
return new ConfigurationBuilder()
.SetBasePath(outputPath)
.AddJsonFile("appsettings.json")
.Build();
}
}
public class FeedReadConfiguration
{
public int Col1Width { get; set; }
}
根据显示的设置文件,没有
“FeedRead”
部分
这些设置需要直接从根目录读取
public static class Helper {
public static FeedReadConfiguration GetApplicationConfiguration( ) {
var currentDirectory = System.IO.Directory.GetCurrentDirectory();
var iConfig = GetIConfigurationRoot(currentDirectory);
//Microsoft.Extensions.Configuration.Binder.dll
FeedReadConfiguration configuration = iConfig.Get<FeedReadConfiguration>();
return configuration;
}
public static IConfiguration GetIConfigurationRoot(string outputPath) {
return new ConfigurationBuilder()
.SetBasePath(outputPath)
.AddJsonFile("appsettings.json")
.Build();
}
}
公共静态类帮助器{
公共静态FeedReadConfiguration GetApplicationConfiguration(){
var currentDirectory=System.IO.Directory.GetCurrentDirectory();
var iConfig=GetIConfigurationRoot(当前目录);
//Microsoft.Extensions.Configuration.Binder.dll
FeedReadConfiguration=iConfig.Get();
返回配置;
}
公共静态IConfiguration GetIConfigurationRoot(字符串输出路径){
返回新的ConfigurationBuilder()
.SetBasePath(输出路径)
.AddJsonFile(“appsettings.json”)
.Build();
}
}
参考文献
参考旁边的问题:为什么返回
ConfigurationBuilder
而不是生成的IConfiguration
?我认为您的appSettings.json文件没有放在测试项目中。从实际项目中放置应用程序设置文件以测试项目。Kirsten,这可能会帮助您:测试是否失败(断言?),或者是否存在异常抛出,并显示详细的异常消息。未找到F.e.文件,原因是:可选:false
?感谢@Martin我更新了问题,以表明断言失败。我也在重新编写以使用IConfiguration.IConfigurationRoot没有get方法。它有GetChildren,但这对绑定不有用。@KirstenGreed扩展方法。请确保您有必要的参考资料。@KirstenGreed请特别查看本节@KirstenGreed winforms是如何在这里发挥作用的?@KirstenGreed plus配置模块独立于asp.net,因此它可以在asp.net环境之外使用。