MVC 自定义IModelBinder实现json参数转Dictionarystring, string
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MVC 自定义IModelBinder实现json参数转Dictionarystring, string
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IModelBinder的學習不算深入,現在用它來實現一個json轉Dictionary<string, string>
一、原始json轉Dictionary<string, string>
如果不用IModelBinder,那么將Json字符串轉換為Dictionary<string, string>的代碼寫法是:
/// <summary>/// 手動Json轉Dictionary/// </summary>/// <param name="Param"></param>/// <returns></returns>public ActionResult ManualJsonToDictionary(string Param){JavaScriptSerializer jss = new JavaScriptSerializer();//將Json字符串轉換為Dictionary<string, string>Dictionary<string, string> DicParam = jss.Deserialize<Dictionary<string, string>>(Param);return Content(DicParam["Title"]);}當這個需求多了之后,這種代碼就太多了,可以通過實現IModelBinder來簡化。
二、實現IModelBinder簡化
簡化后的代碼如下:
/// <summary>/// 測試IModelBinder接口的實現/// </summary>/// <param name="DicParam"></param>/// <returns></returns>public ActionResult TestJsonToDictionary([ModelBinder(typeof(JsonToDictionaryBinder))]Dictionary<string, string> DicParam){return Content(DicParam["Title"]);}其中實現IMidelBinder的類JsonToDictionaryBinder的代碼如下:
/// <summary>/// Json轉Dictionary<string, string>/// </summary>public class JsonToDictionaryBinder : IModelBinder{public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext){Dictionary<string, string> DicParam = new Dictionary<string, string>();if (!string.IsNullOrEmpty(Convert.ToString(controllerContext.HttpContext.Request["Param"]))){System.Web.Script.Serialization.JavaScriptSerializer sr = new System.Web.Script.Serialization.JavaScriptSerializer();DicParam = sr.Deserialize(controllerContext.HttpContext.Request["Param"], typeof(Dictionary<string, string>)) as Dictionary<string, string>;}return DicParam;}}前臺測試頁面代碼如下:
<!DOCTYPE html> <html> <head><meta name="viewport" content="width=device-width" /><title>Index</title><script src="/jquery-1.10.2.min.js"></script><script type="text/javascript">$(function(){var jsonStr = "{\"Id\":\"1\",\"Title\":\"張飛\"}";$.ajax({url: "/Home/TestJsonToDictionary",dataType: "text",data:{Param: jsonStr},success: function (response) {alert(response);}})$.ajax({url: "/Home/ManualJsonToDictionary",dataType: "text",data: {Param: jsonStr},success: function (response) {alert(response);}}) }) </script> </head> <body><div></div> </body> </html>總結
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