如何在绑定对象数组时配置服务？

Question

我将一个json字符串附加到VCAP_SERVICES环境变量，如下所示：

{
"redislabs": [
    {
        "credentials": {
            "host": "redis-1756.pcfredissb2.com",
            "ip_list": [
                "10.999.46.999"
            ],
            "password": "cz(2u",
            "port": 1756
        },
        "syslog_drain_url": null,
        "volume_mounts": [],
        "label": "redislabs",
        "provider": null,
        "plan": "simple-redis",
        "name": "sdsredis2",
        "tags": [
            "redislabs"
        ]
    },
    {
        "credentials": {
            "host": "redis-13610.pcfredis.com",
            "ip_list": [
                "10.999.46.9999"
            ],
            "password": "n-C*",
            "port": 13610
        },
        "syslog_drain_url": null,
        "volume_mounts": [],
        "label": "redislabs",
        "provider": null,
        "plan": "simple-redis",
        "name": "sdsredis",
        "tags": [
            "redislabs"
        ]
    }
]
}

在Startup.cs的ConfigureServices中，当我运行Configuration.GetSection("redislabs").AsEnumerable()时，我得到的结果如下所示：

​

​

我有几个options类，如下所示：

public class RedisLabs
{
    public RedisLab[] redislabs { get; set; }
}

public class RedisLab
{
    public Credentials credentials { get; set; }
    public object syslog_drain_url { get; set; }
    public object[] volume_mounts { get; set; }
    public string label { get; set; }
    public object provider { get; set; }
    public string plan { get; set; }
    public string name { get; set; }
    public string[] tags { get; set; }
}

public class Credentials
{
    public string host { get; set; }
    public string[] ip_list { get; set; }
    public string password { get; set; }
    public int port { get; set; }
}

我的问题是，我该如何在这样的东西上执行绑定呢？绑定对象数组是可能的吗？

我试过了：

var redislabs = new List<RedisLab>();
Configuration.GetSection("redislabs").Bind(redislabs);

和

services.Configure<RedisLabs>(Configuration);

还有一些其他的方法。似乎什么都不起作用。

停一下，谢谢。

Answer 1

给定您的json文件和类，这应该可以工作(将顶级部分绑定到包含数组的类的实例)：

var redisLabs = new RedisLabs();
Configuration.Bind(redisLabs);

这也是可行的：

services.Configure<RedisLabs>(Configuration);
...
var rlOptions = app.ApplicationServices.GetRequiredService<IOptions<RedisLabs>>();
var redisLabs = rlOptions.Value;