.net core 3.0 读取appsettings.json（推荐）

引用：microsoft.extensions.configuration

          microsoft.extensions.configuration.json

public iactionresult index()
{
    var builder = new configurationbuilder()
        .setbasepath(directory.getcurrentdirectory())
        .addjsonfile("appsettings.json")
        .addjsonfile("appsettings.test.json", true, reloadonchange: true);
 
    var config = builder.build();
 
    //读取配置
    viewdata["secret"] = config["appsettings:key"];
    return view();
}

 .Net 5下亲测

    public string GetAppsetting(string key)
        {
            var builder = new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())
            .AddJsonFile("appsettings.json")
            .AddJsonFile("appsettings.test.json", true, reloadOnChange: true);
            var config = builder.Build();
            return config[key]; //读取配置
        }

转自：http://www.10qianwan.com/articledetail/406420.html