jsonp, 跨域请求

通过jq进行跨域请求

客户端

$.ajax({    url:'http://127.0.0.1:8082/water-store/store/deliveryman/uploadLocation.do',    data:{        lng:location.lng,        lat:location.lat    },    dataType:"jsonp",    type:'POST',    error:function(XMLHttpRequest, textStatus, errorThrown){        fn(errorThrown);    },    success:function(data){        fn(undefined, data);    }})

服务器端

@RequestMapping("uploadLocation")@ResponseBodypublic String uploadLocation(HttpServletResponse response, String callback,        BigDecimal lng, BigDecimal lat) {// 需要设置此头部信息    // 指定允许其他域名访问      response.setHeader("Access-Control-Allow-Origin", "*");      // 响应类型      response.setHeader("Access-Control-Allow-Methods", "POST");      // 响应头设置      response.setHeader("Access-Control-Allow-Headers", "x-requested-with,content-type");      // 返回数据    ViewReturnStateJson json = ViewReturnStateJson.successedText("ok");    return String.format("%s(%s)", callback, JsonUnit.getJsonStr(json));}