asp.net core 读取appsettings.json配置项

1.新建一个asp.net core 项目



2.打开appsettings.json，加入配置项

{
"Logging": {
"IncludeScopes": false,
"LogLevel": {
"Default": "Warning"
}
},
"StarInfo": { //普通方式
"Port": 3362
},
"Job": {
"Name": "王小二"
},
"JobList": [ //集合方式
{
"Name": "王小二",
"Age": 29,
"sex": "男"
},
{
"Name": "李一一",
"Age": 22,
"sex": "女"
}
]
}

3.创建相应的Model



Job.cs

public class Job
{
public string Name { get; set; }
}

JobItem.cs

public class JobItem
{
public string Name { get; set; }
public int Age { get; set; }
public string Sex { get; set; }
}

StarInfo.cs

public class StarInfo
{
public int Port { get; set; }
}

4.在Startup.cs中加入获取项

public void ConfigureServices(IServiceCollection services)
{
services.AddMvc();
//读取配置信息
services.Configure<StarInfo>(this.Configuration.GetSection("StarInfo"));
//读取配置信息
services.Configure<Job>(this.Configuration.GetSection("Job"));
services.Configure<List<JobItem>>(this.Configuration.GetSection("JobList"));
}

5.注入到Controller中

public class HomeController : Controller
{
public StarInfo StarInfoConfig;
public Job JobConfig;
public List<JobItem> JobListConfig;
//重写构造函数，包含注入的配置信息
public HomeController(IOptions<StarInfo> setting, IOptions<Job> jobsetting, IOptions<List<JobItem>> joblistsetting)
{
StarInfoConfig = setting.Value;
JobConfig = jobsetting.Value;
JobListConfig = joblistsetting.Value;
}
public IActionResult Index()
{
string portstr = StarInfoConfig.Port.ToString();
string jobname = JobConfig.Name;
string liststr = "";
JobListConfig.ForEach(item =>
{
liststr += item.Name + "," + item.Age + "," + item.Sex + "|||||";
});
ViewBag.portstr = portstr;
ViewBag.jobname = jobname;
ViewBag.liststr = liststr;
return View();
}
}

6.输出结果



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