private readonly IConfiguration _iConfiguration = null;
public ConfigurationController(IConfiguration configuration)
{
this._iConfiguration = configuration;
}
appsettings.json读取方式
{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft": "Warning",
"Microsoft.Hosting.Lifetime": "Information"
}
},
"AllowedHosts": "*",
"Today": "0624",
"ConnectionStrings": {
"JDDbConnection": "Server=PC;Database=advanced11;User id=sa;password=Sasa123",
"Write": "Data Source=PC; Database=Customers; User ID=sa; Password=Sasa123; MultipleActiveResultSets=True",
"Read": [
"Data Source=.; Database=Customers_New1; User ID=sa; Password=Passw0rd; MultipleActiveResultSets=True",
"Data Source=PC; Database=Customers_New2; User ID=sa; Password=Passw0rd; MultipleActiveResultSets=True",
"Data Source=.; Database=Customers_New3; User ID=sa; Password=Passw0rd; MultipleActiveResultSets=True"
]
},
"RabbitMQOptions": {
"HostName": "192.168.0.118",
"UserName": "guest",
"Password": "guest"
}
}
方式1:简单key 读取
string AllowedHosts = this._iConfiguration["AllowedHosts"];
string writeConn = this._iConfiguration["ConnectionStrings:Write"];
string readConn0 = this._iConfiguration["ConnectionStrings:Read:0"];//某一个值
string[] _SqlConnectionStringRead = this._iConfiguration.GetSection("ConnectionStrings").GetSection("Read").GetChildren().Select(s => s.Value).ToArray();//数组
方式2:命令行读取方式
dotnet run --urls="http://*:5555" ip="127.0.0.1" /port=5555 ConnectionStrings:Write=CommandLineArgument
string urls = this._iConfiguration["urls"];
string ip = this._iConfiguration["ip"];
string port = this._iConfiguration["port"];
string writeConn = this._iConfiguration["ConnectionStrings:Write"];
方式3:build 与get方式 直接将读取app.json里的值存储到某一对象
RabbitMQOptions rabbitMQOptions1 = new RabbitMQOptions();
this._iConfiguration.GetSection("RabbitMQOptions").Bind(rabbitMQOptions1);
RabbitMQOptions rabbitMQOptions2 = this._iConfiguration.GetSection("RabbitMQOptions").Get<RabbitMQOptions>();
除此之外还支持内存读取,读取方式和以上方式没什么区别
内存设置Program--》ConfigureAppConfiguration设置:
var memoryConfig = new Dictionary<string, string>
{
{"TodayMemory", "0624-Memory"},
{"RabbitMQOptions:HostName", "192.168.0.118-Memory"},
{"RabbitMQOptions:UserName", "guest-Memory"},
{"RabbitMQOptions:Password", "guest-Memory"}
};
configurationBuilder.AddInMemoryCollection(memoryConfig);
读取内存方式
string HostName = this._iConfiguration["RabbitMQOptions:HostName"];
string TodayMemory = this._iConfiguration["TodayMemory"];