netcore 非注入全局获取配置文件

在netcore开发中，最多见的就是注入，好比想获取appsettings.json的内容，咱们就须要去注入，而后在controller里面去获取，可是咱们若是想要在service中使用appsettings.json的内容，这样就是一个问题，而且每一个controller去注入也是很是麻烦的事情

 

下面的注入的（这种方法百度一下能够出来几百条相同的搜索结果。。。参见http://www.javashuo.com/article/p-dbyhkrdu-bg.html）

services.AddOptions();
services.Configure<AppSettings>(Configuration.GetSection("AppSettings"));

而后获取使用

 

 

 

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)//增长环境配置文件，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，咱们在要使用的时候只须要AppSettingProvider._appSettings.xxxx便可，不须要进行重复的、实现

 

有错误或者片面地方欢迎指正