通过jQuery的JSON到asp.net的HttpHandler

问题描述

只是不明白我在做什么错了..
我一直在找几十个类似的问题，但仍然得到了误会......
当我从调用JS CallHandler功能，我总是得到请求失败的提示。
请帮助我。

JS / jQuery的：

 函数CallHandler（）{
    $阿贾克斯（{
        网址：DemoHandler.ashx
        的contentType：应用/ JSON的;字符集= UTF-8，
        输入：POST，
        数据类型：JSON
        数据：[{ID：10000，名：条例}，{ID：10005，名：保罗}]，
        成功：的onComplete，
        错误：OnFail
    }）;
    返回false;
}功能的onComplete（结果）{
    警报（结果）;
}
功能OnFail（结果）{
    警报（'请求失败'）;
}
 

asp.net C＃code背后：

 公共无效的ProcessRequest（HttpContext的背景下）
{
  的JavaScriptSerializer jsonSerializer =新的JavaScriptSerializer（）;
  字符串jsonString = HttpContext.Current.Request.Form [JSON];  清单＆LT;员工＆GT; emplList =新的List＆LT;员工＆GT;（）;
  emplList = jsonSerializer.Deserialize＆LT;名单，LT;员工＆GT;＆GT;（jsonString）;  字符串RESP =;
  的foreach（在emplList雇员EMP）{
  RESP + = emp.name +\\\\;
  }
  context.Response.Write（RESP）;
}公共类员工
{
  公共字符串ID {搞定;组; }
  公共字符串名称{;组; }
}
 

解决方案

尝试

 数据：JSON.stringify（[{ID：10000，名称：条例}，{ID：10005，名称：保罗}]）
 

修改我删除从属性名称引号

此外，JSON字符串需要被读取其他方式 < / p>

 字符串jsonString =的String.Empty;HttpContext.Current.Request.InputStream.Position = 0;
使用（StreamReader的的InputStream =新的StreamReader（HttpContext.Current.Request.InputStream））
{
     jsonString = inputStream.ReadToEnd（）;
}
 

这是可行的解决方案。

 公共无效的ProcessRequest（HttpContext的背景下）
{
    VAR jsonSerializer =新的JavaScriptSerializer（）;
    VAR jsonString =的String.Empty;    context.Request.InputStream.Position = 0;
    使用（VAR的InputStream =新的StreamReader（context.Request.InputStream））
    {
        jsonString = inputStream.ReadToEnd（）;
    }    VAR emplList = jsonSerializer.Deserialize＆LT;名单，LT;员工＆GT;＆GT;（jsonString）;
    VAR RESP =的String.Empty;    的foreach（在emplList VAR EMP）
    {
        RESP + = emp.name +\\\\;
    }    context.Response.ContentType =应用/ JSON;
    context.Response.ContentEncoding = Encoding.UTF8;
    context.Response.Write（jsonSerializer.Serialize（RESP））;
}公共类员工
{
    公共字符串ID {搞定;组; }
    公共字符串名称{;组; }
}公共BOOL IsReusable
{
    得到
    {
        返回false;
    }
}
 

Just don't get it what i'm doing wrong..i've been looking for dozens of similar questions, yet still got misunderstandings...when i call CallHandler function from JS, i always get 'Request Failed' alert.please help me.

JS/Jquery:

function CallHandler() {
    $.ajax({
        url: "DemoHandler.ashx",
        contentType: "application/json; charset=utf-8",
        type: 'POST',
        dataType: "json",
        data: [{"id": "10000", "name": "bill"},{"id": "10005", "name": "paul"}],
        success: OnComplete,
        error: OnFail
    });
    return false;
}

function OnComplete(result) {
    alert(result);
}
function OnFail(result) {
    alert('Request Failed');
}

asp.net c# code behind:

public void ProcessRequest(HttpContext context)
{
  JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
  string jsonString = HttpContext.Current.Request.Form["json"];

  List<Employee> emplList = new List<Employee>();
  emplList = jsonSerializer.Deserialize<List<Employee>>(jsonString);

  string resp = "";
  foreach (Employee emp in emplList){
  resp += emp.name + " \\ ";
  }
  context.Response.Write(resp);
}

public class Employee
{
  public string id { get; set; }
  public string name { get; set; }
}

解决方案

Try

data: JSON.stringify([{id: "10000", name: "bill"},{id: "10005", name: "paul"}])

edit I removed the quotes from the property names

Also, the JSON string needs to be read in other way

string jsonString = String.Empty;

HttpContext.Current.Request.InputStream.Position = 0;
using (StreamReader inputStream = new StreamReader(HttpContext.Current.Request.InputStream))
{
     jsonString = inputStream.ReadToEnd();
}

An working solution

public void ProcessRequest(HttpContext context)
{
    var jsonSerializer = new JavaScriptSerializer();
    var jsonString = String.Empty;

    context.Request.InputStream.Position = 0;
    using (var inputStream = new StreamReader(context.Request.InputStream))
    {
        jsonString = inputStream.ReadToEnd();
    }

    var emplList = jsonSerializer.Deserialize<List<Employee>>(jsonString);
    var resp = String.Empty;

    foreach (var emp in emplList)
    {
        resp += emp.name + " \\ ";
    }

    context.Response.ContentType = "application/json";
    context.Response.ContentEncoding = Encoding.UTF8;
    context.Response.Write(jsonSerializer.Serialize(resp));
}

public class Employee
{
    public string id { get; set; }
    public string name { get; set; }
}

public bool IsReusable
{
    get
    {
        return false;
    }
}

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