亲测 asp.net 调用 webservice返回json

前端脚本

 $("#sure").click(function () {
 var tbody = $("#putsigal tbody");
 var trs = tbody.find("tr");
 var houses = "{\"houses\":[";
 trs.each(function (i) {
 var housename = $(this).find('input[name="housename"]').val();
 var houseaddress = $(this).find('input[name="houseaddress"]').val();
 var area = $(this).find('input[name="area"]').val();
 alert(housename + "-" + houseaddress + "-" + area);
 if (!housename || !houseaddress || !area) {
 alert("第" + (i + ) + "行的仓库信息不完整");
 return false;
 } else {
 var num = /^[-][-]+(.[-]{,}){,}$/;
 if (!num.test(area)) {
 alert("第" + (i + ) + "行的仓库面积输入不合法");
 return false;
 }

 houses += "{\"housename\":" + "\"" + housename + "\",\"houseaddress\":\"" + houseaddress + "\",\"area\":\"" + area + "\"},";
 }

 })
 var value = houses.substring(, houses.length - );
 value += "]}";

 $.ajax({
 type: "post",
 url: "/Service.asmx/AddHouse",
 dataType: "json",
 //contentType: "application/json; charset=utf-8",
 data: { house: value },
 success: function (data) {
 // alert(data);
 if (data.result == "") {
 alert(data.message);
 window.location.href = "WareHouse.aspx";
 } else { alert(data.message); }
 },
 error: function(x, e) {
 alert(x.responseText);
 },

 });
 });

webservice 代码

[WebMethod]
public void AddHouse(string house)
{
HouseBll hb = new HouseBll();
JavaScriptSerializer js = new JavaScriptSerializer();
Context.Response.Clear();
Context.Response.ContentType = "aplication/json";
string jsontext = house;
List<Warehouse> hs = new List<Warehouse>();
Data result = new Data();
JsonToobj json = new JsonToobj();
hs = json.JsonToHouses(jsontext);
foreach (Warehouse h in hs)
{
try { hb.AddHouse(h); result.result = "1"; result.message = "成功插入"; }
catch { result.result = "0"; result.message = "发生异常"; }
}

Context.Response.Write(js.Serialize(result));
Context.Response.End();
}

 [WebMethod]
 public string AddHouse(string house)
 {
 HouseBll hb = new HouseBll();
 JavaScriptSerializer js = new JavaScriptSerializer();
 Context.Response.Clear();
 Context.Response.ContentType = "aplication/json";
 string jsontext = house;
 List<Warehouse> hs = new List<Warehouse>();
 Data result = new Data();
 JsonToobj json = new JsonToobj();
 hs = json.JsonToHouses(jsontext);
 foreach (Warehouse h in hs)
 {
 try { hb.AddHouse(h); result.result = ""; result.message = "成功插入"; }
 catch { result.result = ""; result.message = "发生异常"; }
 }

 return js.Serialize(result);

 }

可以看到这个方法在写法上只有标红部分不同以及返回类型不同，其余均相同。第一个写法返回纯粹的json字符串，前端可以直接识别（本例中的前端脚本采用的第一种写法），而第二种写法则返回的是xml格式。在其格式下将json字符串包含在节点中。这种方式显然不是最方便的。原因就在于webservice 直接返回的是xml格式，而采用response.write的方法则是直接将结果写入返回流中，因此没有额外的格式限制。