.net core 3.0 读取appsettings.json（推荐）

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

引用：microsoft.extensions.configuration

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();
}