ASP.NET MVC 传递 JSON数据到后台

刚刚帮朋友的忙，传递JSON数据到后台，将代码贴到这里，当个记录吧

 

1. 下载 NewtonSoft.Json
2. 将NewtonSoft.Json.dll 引入程序中
3. 现在开始看一下前台数据：

4. function Test() {
           var data = [
                        { Id: 1, Name: "Test" },
                        { Id: 2, Name: "Test2" }
                    ];
                        alert(String.toSerialize(data));
           $.post("/Home/Test/", { users: String.toSerialize(data) }, function (text) {
               alert(String.toSerialize(text));
           }, "json");
       }
   
       String.toSerialize = function (obj) {
           var ransferCharForJavascript = function(s) {
               var newStr = s.replace(
                   /[\x26\x27\x3C\x3E\x0D\x0A\x22\x2C\x5C\x00]/g ,
                   function(c) {
                       var ascii = c.charCodeAt(0);
                       return '\\u00' + (ascii < 16 ? '0' + ascii.toString(16) : ascii.toString(16))
                   }
               );
               return newStr;
           };
           if (obj == null) {
               return null;
           } else if (obj.constructor == Array) {
               var builder = [];
               builder.push("[");
               for (var index in obj) {
                   if (typeof obj[index] == "function") continue;
                   if (index > 0) builder.push(",");
                   builder.push(String.toSerialize(obj[index]));
               }
               builder.push("]");
               return builder.join("");
           } else if (obj.constructor == Object) {
               var builder = [];
               builder.push("{");
               var index = 0;
               for (var key in obj) {
                   if (typeof obj[key] == "function") continue;
                   if (index > 0) builder.push(",");
                   builder.push("\"{0}\":{1}".format( key, String.toSerialize(obj[key])));
                   index++;
               }
               builder.push("}");
               return builder.join("");
           } else if (obj.constructor == Boolean) {
               return obj.toString();
           } else if (obj.constructor == Number) {
               return obj.toString();
           } else if (obj.constructor == String) {
               return '"{0}"'.format(ransferCharForJavascript(obj));
           } else if (obj.constructor == Date) {
               return '{"__DataType":"Date","__thisue":{0}}'.format(obj.getTime() - (new Date(1970, 0, 1, 0, 0, 0)).getTime());
           } else if (this.toString != undefined) {
               return String.toSerialize(obj);
           }
       };
   
       String.prototype.format = function () {
           var args = arguments;
           return this.replace(/{(\d+)}/g, function (match, number) {
               return typeof args[number] != 'undefined'
         ? args[number]
         : match;
           });
       };

5. 前台可以调用js方法传递到后台
6. 后台Model添加JsonBinder处理类 JsonBinder.cs

7. /// <summary>
       /// Json数据绑定类
       /// </summary>
       /// <typeparam name="T"></typeparam>
       public class JsonBinder<T> : IModelBinder
       {
   
           public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
           {
               //从请求中获取提交的参数数据
               var json = controllerContext.HttpContext.Request.Form[bindingContext.ModelName] as string;
               //提交参数是对象
               if (json.StartsWith("{") && json.EndsWith("}"))
               {
                   JObject jsonBody = JObject.Parse(json);
                   JsonSerializer js = new JsonSerializer();
                   object obj = js.Deserialize(jsonBody.CreateReader(), typeof(T));
                   return obj;
               }
               //提交参数是数组
               if (json.StartsWith("[") && json.EndsWith("]"))
               {
                   IList<T> list = new List<T>();
                   JArray jsonRsp = JArray.Parse(json);
   
                   if (jsonRsp != null)
                   {
                       for (int i = 0; i < jsonRsp.Count; i++)
                       {
                           JsonSerializer js = new JsonSerializer();
                           object obj = js.Deserialize(jsonRsp[i].CreateReader(), typeof(T));
                           list.Add((T)obj);
                       }
                   }
                   return list;
               }
               return null;
           }

8. Student实体类

9. [JsonObject]
       public class Student
       {
           [JsonProperty("Id")]
           public int Id { get; set; }
           [JsonProperty("Name")]
           public string Name { get; set; }
       }

10. Controller 中的 Action处理

11. [HttpPost]
            public string Test([ModelBinder(typeof(JsonBinder<Student>))]List<Student> users)
            {
                if(users.Count == 2)
                    return "true";
                return "false";
            }