serialization - SignalR : use camel case

Question

我想知道是否有办法配置 SignalR，以便集线器中的客户端函数使用驼峰式大小写返回对象。

谢谢。

Answer 1

滚动您自己的契约(Contract)解析器，例如

public class SignalRContractResolver : IContractResolver
{

    private readonly Assembly assembly;
    private readonly IContractResolver camelCaseContractResolver;
    private readonly IContractResolver defaultContractSerializer;

    public SignalRContractResolver()
    {
        defaultContractSerializer = new DefaultContractResolver();
        camelCaseContractResolver = new CamelCasePropertyNamesContractResolver();
        assembly = typeof(Connection).Assembly;
    }

    public JsonContract ResolveContract(Type type)
    {
        if (type.Assembly.Equals(assembly))
        {
            return defaultContractSerializer.ResolveContract(type);

        }

        return camelCaseContractResolver.ResolveContract(type);
    }

}

像这样注册

var settings = new JsonSerializerSettings();
settings.ContractResolver = new SignalRContractResolver();
var serializer = JsonSerializer.Create(settings);
GlobalHost.DependencyResolver.Register(typeof (JsonSerializer), () => serializer);

如果您使用自定义 IoC，您可能会遇到问题，因为 JsonSerializer是一个具体类型，一些 IoC，例如 Ninject 将注入(inject)未绑定(bind)的具体类型。在 Ninjects 情况下，解决方案是将其注册到 Ninject 而不是 SignalR 自己的 DependencyResolver

var settings = new JsonSerializerSettings();
settings.ContractResolver = new SignalRContractResolver();
var serializer = JsonSerializer.Create(settings);
kernel.Bind<JsonSerializer>().ToConstant(serializer);

更多信息在我的博客:
http://andersmalmgren.com/2014/02/27/why-overriding-jsonserializer-no-longer-work-in-signalr-2-0/