asp.net core 默认注入了configuration配置服务，configuration可以从命令行、环境变量、配置文件读取配置。
这边主要演示从appsettings.json文件读取配置
1.读取单节点配置
{
"name":"pxp"
}
//在控制器注入iconfiguration
private iconfiguration _configuration;
public weatherforecastcontroller( iconfiguration configuration)
{
_configuration = configuration;
}
[httpget(name = "getweatherforecast")]
public ienumerable get()
{
var name = _configuration.getsection("name");
console.writeline("读取配置：" name );
return null;
}
2.读取嵌套节点
{
"info":{
"name":"pxp",
"age":"23",
"sex":"男"
}
}
//读取info里面的name
var name = _configuration.getsection("info：name");
3.映射到实体
public class info
{
public string name{get;set;}
public string age{get;set;}
public string sex{get;set;}
}
var info= _configuration.getsection("info");
string name= info.get().name;
4.注入服务，映射到实体
//在program中注入 // 读取配置到实体类 builder.services.configure(builder.configuration.getsection("info"));
//使用ioptions接口接收
private readonly ioptions_myconfig; public weatherforecastcontroller(ioptions myconfigoptions) { _myconfig = myconfigoptions; _configuration = configuration; } [httpget(name = "getweatherforecast")] public ienumerable get() { console.writeline("读取配置：" _myconfig.value.name); return null; }
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