Unrecognized token 'xxxx': was expecting ('true', 'false' or 'null')
$.ajax({type:"post",url:"xxx",data:{"a":123,"b":456},dataType:"json",contentType:"application/json",success:function(result){},error:function(e){console.log(e)alert('网络连接失败');}})当上述ajax请求参数时发现会报“jsonp