asp.net项目下的web service返回json数据问题
App_Code目录下放置WebService.cs文件,文件内容如:
using System; using System.Collections.Generic; using System.Data; using System.Data.SqlClient; using System.Linq; using System.ServiceModel.Web; using System.Text; using System.Web; using System.Web.Script.Serialization; using System.Web.Script.Services; using System.Web.Services; using System.Web.UI.WebControls; [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. [System.Web.Script.Services.ScriptService] public class WebService : System.Web.Services.WebService { [WebMethod] [ScriptMethod(ResponseFormat = ResponseFormat.Json, UseHttpGet = true)] public void GetStores(string deliveryStartTime, string deliveryEndTime, bool is20To22 = false, string cityPOSCodePrefix = "960") { var storeListJson = new StringBuilder(); // var storeList = GetStoreList(deliveryStartTime, deliveryEndTime, is20To22, cityPOSCodePrefix); storeListJson.Append("["); foreach (var store in storeList) { string format = "{{\"Value\":\"{0}\", \"Text\":\"{1}\"}}"; storeListJson.Append(string.Format(format, store.Value.ToString(), store.Text.ToString())); storeListJson.Append(","); } storeListJson.Remove(storeListJson.Length - 1, 1); storeListJson.Append("]"); // Context.Response.Clear(); Context.Response.ContentType = "text/json; charset=utf-8"; //Context.Response.AddHeader("content-disposition", "attachment; filename=export.json"); //Context.Response.AddHeader("content-length", storeListJson.Length.ToString()); Context.Response.Flush(); Context.Response.Write(storeListJson); }
}
WebService.asmx文件可以放在网站跟目录下,跟目录下的页面请求WebService拿json数据时:
var url = "/webservice.asmx/GetStores?cityPOSCodePrefix=" + cityPOSCodePrefix + "&deliveryStartTime=" + deliveryStartTime + "&deliveryEndTime=" + deliveryEndTime + "&is20To22=" + is20To22;
js对请求返回的数据进行处理,如下:
$.ajax({ url: url, type: ‘get‘, async: false, contentType: ‘text/json; charset=utf-8‘, success: function (result) { //alert(result.d[0]); var storeListString = ""; var storeLiValueStart = "<li style=\"float: left; margin-left: 40px; margin-top: 8px; width: 120px; border-radius: 8px; background-color: #FFF; border: 2px solid rgb(0,119,175);color:#0077af; padding: 4px 0px; text-align: center; cursor: pointer\" id=\""; var storeLiValueEndAndTextStart = "\">"; var storeLiTextEnd = "</li>"; for (var i = 0; i < result.length; i++) { storeListString += storeLiValueStart; storeListString += result[i].Value; storeListString += storeLiValueEndAndTextStart; storeListString += result[i].Text; storeListString += storeLiTextEnd; } $("#storeListTest").html(storeListString); }
注意:要想拿到返回的json数据,web.config文件中system.web节点下必须加如下节点:
<webServices> <protocols> <add name="HttpGet" /> </protocols> </webServices>
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