一个一般处理程序服务端
返回的数据是json
public void ProcessRequest(HttpContext context)
{
citys c = new citys();
c.age = "12";
c.city = "bj";
c.hosst = "www.baidu.com";
c.name = "张三";
c.weather = "天气";
string cc = JsonConvert.SerializeObject(c);
context.Response.ContentType = "text/plain";
context.Response.Write( cc );
}
这个一般处理程序返回jsonp
public void ProcessRequest(HttpContext context) { citys c = new citys(); c.age = "12"; c.city = "bj"; c.hosst = "www.baidu.com"; c.name = "张三"; c.weather = "天气"; string cc = JsonConvert.SerializeObject(c); context.Response.ContentType = "text/plain"; string callbackFunName = context.Request["callback"]; context.Response.Write(callbackFunName + "([" + cc + "])"); }
可以看出jsonp是包裹着json这样理解
json:cc
jsonp:callbackFunName(cc)
下面是客户端的请求
$("#aaa").click(function () {
$.ajax({
type: "get",
async: false,
url: "http://www.server.com/handler1.ashx",
dataType: "jsonp",
jsonp: "callback",//传递给请求处理程序或页面的，用以获得jsonp回调函数名的参数名(默认为:callback)
jsonpCallback: "success_jsonpCallback",//自定义的jsonp回调函数名称，默认为jQuery自动生成的随机函数名
success: function (data) {
alert(data);
alert(data[0].name);
},
error: function () {
alert(‘fail‘);
}
});
});
原文：https://www.cnblogs.com/dcrBook/p/10037075.html