netcore 非注入全局获取配置文件

孤街浪徒 提交于 2020-04-15 10:19:27

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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https://www.cnblogs.com/ideacore/p/6282926.html

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

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