JQuery 中的Ajax调用WebServices 的小结

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$.ajax({
type:"POST",
//注明 返回Json
contentType:"application/json;utf-8",
//CollegeDepartWebServices.asmx web服务名 /GetCollegeDepart 方法名
url:"CollegeDepartWebServices.asmx/GetCollegeDepart",
//strDepartId 参数名称 collegeId 参数值
data:"{strDepartId:"+collegeId+"}",
dataType:"json",
success:function(result){
varjson=null
try
{
if(result)
{
//因为返回的是ArrayList 所以循环取出其中的值
$.each(result,function(i, n){
//ddlDepart 为下来菜单。循环的向下拉菜单中添加新的选项
ddlDepart.options[ddlDepart.length]=newOption(n.CollegeDepartTitle,n.CollegeDepartId);

});
}


}
catch(e)
{
alert("错误>>"+e.message);
return;

}

},
error:function(data)
{
alert(data.status+">>>"+data.statusText);
}
});

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[WebService(Namespace="http://tempuri.org/")]
[WebServiceBinding(ConformsTo=WsiProfiles.BasicProfile1_1)]
[ScriptService]
publicclassCollegeDepartWebServices : System.Web.Services.WebService
{

publicCollegeDepartWebServices()
{

//如果使用设计的组件，请取消注释以下行
//InitializeComponent();
}

[WebMethod]
[System.Xml.Serialization.XmlInclude(typeof(CollegeDepartInfo))]
publicArrayList  GetCollegeDepart(stringstrDepartId)
{
CollegeDepartBL.FlushCollegeDepartCache();

if(string.IsNullOrEmpty(strDepartId))
returnnull;

ArrayList myList=CollegeDepartBL.GetCollegeDepartListByCollegeID(int.Parse(strDepartId));
returnmyList;

}

}