为什么调用失败呢?
前台:
$.ajax({
type: "POST",
contentType: "application/json; charset=utf-8",
url: "Default.aspx/PrintLabel",
data: "{'LOT':'123456789'}",
success: function (result) {
alert("o000");
alert(result.d);
},
error: function (a) { alert("error") }
});
后台:
[WebMethod]
public static string PrintLabel(string LOT)
{
return LOT;
}
结果第一个弹出框是对的,第二个一致是0,即使我后台写 return “aaaa”; 还是弹出0