.NETCore读取配置文件

.NETCore读取配置文件

1. 说明

默认情况下读取配置Configuration的默认优先级:ConfigureAppConfiguration(自定义读取)>CommandLine(命令行参数)>Environment(环境变量)>appsetting.json(默认配置文件)>UseSetting的顺序

原因:读取配置的顺序是后来者居上模式,后来注册的会优先被读取到。

2. 获取配置 2.1 获取单个项 //值是数组 var a0 = Configuration.GetSection("RabbitMQ:Hosts").Get<string[]>(); //获取数组第一个 var a0 = Configuration["RabbitMQ:Hosts:0"]; //值是int类型 var a1 = Configuration.GetValue<int>("RabbitMQ:Port"); //值是字符串 var a2 = Configuration.GetValue<string>("RabbitMQ:UserName"); var a2 = Configuration["RabbitMQ:UserName"]; 2.2 映射项到模型类

模型类

public class RabbitMQConfig { public const string RabbitMQ = "RabbitMQ"; public string[] Hosts { get; set; } public int Port { get; set; } public string UserName { get; set; } public string Password { get; set; } public string VirtualHost { get; set; } }

appsettings

"RabbitMQ": { "Hosts": [ "xxx.xxx.xxx.xxx" ], "Port": 5672, "UserName": "admin", "Password": "xxxxxx", "VirtualHost": "myQueue" } 2.2.1 注入模型类 //startup配置 services.Configure<RabbitMQConfig>(Configuration.GetSection(RabbitMQConfig.RabbitMQ)); //获取数据 private readonly RabbitMQConfig _rabbitMQConfig; public WeatherForecastController(IOptions<RabbitMQConfig> options) { _rabbitMQConfig = options.Value; } 2.2.2 映射项到模型类 var info = new RabbitMQConfig(); Configuration.Bind(RabbitMQConfig.RabbitMQ, info); //or Configuration.GetSection(RabbitMQConfig.RabbitMQ).Bind(info);

到此这篇关于.NET Core读取配置文件的文章就介绍到这了。希望对大家的学习有所帮助,也希望大家多多支持易知道(ezd.cc)。

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