用于 IDictionary<string, object> 的 Asp.Net Core 自定义转换器 appsettings JSON [英] Asp.Net Core custom converter appsettings JSON for IDictionary&lt;string, object&gt;

问题描述

我想读取 appsettings 文件，但是当一个属性定义为 IDictionary 时出现问题:值被转换为字符串.

I would like to read appsettings file, but I have problem when one property is defined as IDictionary: the values are converted as string.

例如我在 appsettings 中定义了:

For example I have in appsettings defined:

  "Queue":{ 
            "Name": "Test1",
            "Durable": true, 
            "Exclusive": false, 
            "AutoDelete": false, 
            "Arguments": {
              "x-expires": 10000,
              "x-overflow": "drop-head",
            }
 },

绑定类定义为

public class QueueSettings
    {
        public string Name { get; set; } = "";
        public bool Durable { get; set; } = true;
        public bool Exclusive { get; set; } = false;
        public bool AutoDelete { get; set; } = false;

        public IDictionary<string, object> Arguments{ get;  set; }
    }

并且绑定完成为

QueueSettings queueSettings = new QueueSettings();
settings.GetSection("Queue").Bind(queueSettings);

在这个例子中 queueSettings.Arguments["x-expires"] 是字符串 ("10000")，但我希望它是整数.如何在 Net Core 服务集合中设置 JsonConverter?我知道它不使用 NewtonJson 所以 JsonConverter 属性没有帮助.

In this example queueSettings.Arguments["x-expires"] is string ("10000"), but I'd like it as integer. How can I set JsonConverter in Net Core services collection? I understand that it does not use NewtonJson so JsonConverter attribute does not help.

推荐答案

您可以根据需要手动绑定.

You can manually bind if you want as you want.

services.Configure<QueueSettings>(configs =>
{
    configs.Name = configuration.GetSection("Queue").GetValue<string>("Name");
    configs.Arguments.Add("x-expires",  configuration.GetSection("Queue:Arguments").GetValue<int>("x-expires"));
});

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