Question

我想将JSON数据传递给ajax函数。但它让我解析异常

$(document).ready(function(){
      $(".count").on('blur', function(){
        var pack_count = $(this).val();
        var order_id = $(this).attr('id');
        $.post("order?action=update_counter&pack_count=" + pack_count + "&order_id=" + order_id, function(data){
          alert("Change is successfull! Price: ");
          $("#sum").html("Order Price: " + data);
          var price = data['order_sum'];
          var pack_count = data['pack_count'];
          document.getElementById('price').value = price;
          $(this).val(pack_count);
        })
      });
    });

resp.setContentType("application/json; charset=UTF-8");
                PrintWriter out = resp.getWriter();
                String jsonData = "{ \"pack_count\" : \"" + selectedOrder.getPackageCount() + "\", \"order_sum\" : \"" + countSum() + "\" }";

                out.print(jsonData);

更新

解决了！感谢printfmyname

和backslash条评论。刚刚将jsonData更改为String jsonData = "{ " + "\"pack_count\" : " + selectedOrder.getPackageCount() + ", \"order_sum\" : " + countSum() + " }";

Answer 1

你要输出一个json字符串输出，但你的标题默认设置为text / html或不是json的东西。因此，在写入输出

之前，需要设置正确的标题

response.setContentType("application/json; charset=UTF-8"); # you may get rid of ; charset=UTF-8 as it is not critical

然后当您完成写入输出调用

 out.flush();

更新

上有错误

String jsonData = "{ \"pack_count\" : \"" + selectedOrder.getPackageCount() + ", \"order_sum\" : " + countSum() + " }";

您在selectedOrder.getPackageCount（）之后缺少引号，更改为follwong

String jsonData = "{ \"pack_count\" : \"" + selectedOrder.getPackageCount() + "\", \"order_sum\" : " + countSum() + " }";

如何将Json对象传递给servlet响应编写器？

更新

1 个答案: