前端PostJosn,后端转化相应的类

/// <summary>
/// JsonPost特性类
/// </summary>
    [AttributeUsage(AttributeTargets.Method, Inherited = true, AllowMultiple = true)]
public class JsonPostAttribute : ActionFilterAttribute
    {
/// <summary>
/// 类型
/// </summary>
public Type ParamType { get; set; }

/// <summary>
/// .ctor
/// </summary>
public JsonPostAttribute(Type paramType)
        {
            ParamType = paramType;
        }

/// <summary>
/// .ctor
/// </summary>
public JsonPostAttribute()
        {

        }

/// <summary>
/// Action执行前过滤器
/// </summary>
/// <param name="filterContext"></param>
public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
using (System.IO.StreamReader sr = new System.IO.StreamReader(filterContext.HttpContext.Request.InputStream,
                    System.Text.Encoding.GetEncoding("utf-8")))
            {
var data = sr.ReadToEnd();
var methodInfo = ((ReflectedActionDescriptor)filterContext.ActionDescriptor).MethodInfo;
if (ParamType == null)
                {
foreach (var p in methodInfo.GetParameters())
                    {
                        ParamType = p.ParameterType;
break;
                    }
                }

if (ParamType != null)
                {
var callback = data.ToInstance(ParamType);
foreach (var p in methodInfo.GetParameters())
                    {
if (p.ParameterType.FullName == ParamType.FullName)
                        {
                            filterContext.ActionParameters[p.Name] = callback;
break;
                        }
                    }
                }
            }
        }
    }

 

调用 方式

 

        [JsonPost]
public JsonResult Create(CreateOrUpdateOrderReq req)
        {            

return req!=null && req.Id>0;
        }

 

前端Post

{"Id":1}

 

另一种实现

客户端调用时 header 里 添加

 Content-Type: application/json;charset=UTF-8

则MVC会自动解析