netcore 非注入全局获取配置文件

在netcore开发中，最常见的就是注入，比如想获取appsettings.json的内容，我们就需要去注入，然后在controller里面去获取，但是我们如果想要在service中使用appsettings.json的内容，这样就是一个问题，并且每个controller去注入也是非常麻烦的事情

 

下面的注入的（这种方法百度一下可以出来几百条相同的搜索结果。。。参见）

services.addoptions();
services.configure<appsettings>(configuration.getsection("appsettings"));

然后获取使用

 

 

 

我想要在service类库里面使用，这时该如何使用哪？

直接上代码：

    public class appsettings
    {
        public string teststring { get; set; }
        public string configversion { get; set; }
        public string connectionstring { get; set; }
        public string redisexchangehosts { get; set; }
        public string uploadpath { get; set; }
    }

        public startup(iconfiguration configuration, iloggerfactory factory, ihostingenvironment env)
        {
            environmentname = env.environmentname;
            configuration = configuration;
            // 将内置的日志组件设置为 nhibernate 的日志组件
            var builder = new configurationbuilder()
                .setbasepath(env.contentrootpath)
                .addjsonfile("appsettings.json", optional: true, reloadonchange: true)
                .addjsonfile($"appsettings.{env.environmentname}.json", optional: true)//增加环境配置文件，新建项目默认有
                .addenvironmentvariables();

            new appsettingprovider().initial(configuration);

            configuration = builder.build();

        }

    public class appsettingprovider
    {
        private static appsettings _myappsettings;
        public static appsettings _appsettings { get { return _myappsettings; } }

        public void initial(iconfiguration configuration)
        {
            _myappsettings =  new appsettings() {
                configversion = configuration["appsettings:configversion"],
                connectionstring = configuration["appsettings:connectionstring"],
                teststring = configuration["appsettings:teststring"],
                redisexchangehosts = configuration["appsettings:redisexchangehosts"],
                uploadpath = configuration["appsettings:uploadpath"]
            };
        }

    }

这样，我们在要使用的时候只需要appsettingprovider._appsettings.xxxx即可，不需要进行重复的、实现

 

有错误或者片面地方欢迎指正