问题:
我将结果内容用字符串拼接成Json数据并返回的时候,会在结果前面添加xml头部,结果如下。
<span style="font-size:14px;"><string xmlns="http://tempuri.org/"> {"data":[{"batchId":"B001","produceOrderId":"", "produceFactory":"","addTime":"2014/7/8 15:09:00","remark":"","parentId":""},{"batchId":"B002","produceOrderId":"生产订单2", "produceFactory":"测试公司1","addTime":"2014/7/8 8:00:00","remark":"","parentId":"B001"},{"batchId":"B003","produceOrderId":"生产订单3", "produceFactory":"测试公司2","addTime":"2014/7/8 0:00:00","remark":"","parentId":"B001"},{"batchId":"B004","produceOrderId":"生产订单4", "produceFactory":"测试公司3","addTime":"2014/7/8 0:00:00","remark":"","parentId":"B002"},{"batchId":"B005","produceOrderId":"生产订单5", "produceFactory":"测试公司4","addTime":"2014/7/8 0:00:00","remark":"","parentId":"B004"},{"batchId":"B006","produceOrderId":"生产订单6", "produceFactory":"外包公司1","addTime":"2014/7/8 0:00:00","remark":"","parentId":"B005"}]} </string></span>
产生如上数据的Webservice接口代码如下。
<span style="font-size:14px;"> [WebMethod] public String GetQrCodeList(String qrCode) { return PriGetQrCodeList(qrCode); } /// <summary> /// 获取关联的二维码树结构 /// </summary> /// <param name="qrCode">产品二维码</param> /// <returns></returns> private String PriGetQrCodeList(String qrCode) { try { String sfull = "{{\"data\":[{0}]}}"; String spart = "{{\"batchId\":\"{0}\",\"produceOrderId\":\"{1}\", \"produceFactory\":\"{2}\",\"addTime\":\"{3}\",\"remark\":\"{4}\",\"parentId\":\"{5}\"}}"; String sData = ""; DataTable dt = bll.GetQrCodeList(qrCode); if (dt == null || dt.Rows.Count == 0) return ""; for (int i = 0; i < dt.Rows.Count; i++) { sData += (String.Format(spart, dt.Rows[i]["BatchId"].ToString(), dt.Rows[i]["ProduceOrderId"].ToString(), dt.Rows[i]["ProduceFactory"].ToString(), dt.Rows[i]["AddTime"].ToString(), dt.Rows[i]["Remark"].ToString(), dt.Rows[i]["ParentId"].ToString()) + ","); } return String.Format(sfull, sData.TrimEnd(',')); } catch (Exception) { return ""; } }</span>
解决方案:
改变数据的返回方式,用 Context.Response.Write代替return 语句,修改GetQrCodeList方法如下即可返回正确的Json格式数据。
<span style="font-size:14px;"> [WebMethod] public void GetQrCodeList(String qrCode) { Context.Response.Charset = "GB2312"; //设置字符集类型 Context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312"); Context.Response.Write(PriGetQrCodeList(qrCode)); Context.Response.End(); }</span>
返回结果如下:
<span style="font-size:14px;">{"data":[{"batchId":"B001","produceOrderId":"", "produceFactory":"","addTime":"2014/7/8 15:09:00","remark":"","parentId":""},{"batchId":"B002","produceOrderId":"生产订单2", "produceFactory":"测试公司1","addTime":"2014/7/8 8:00:00","remark":"","parentId":"B001"},{"batchId":"B003","produceOrderId":"生产订单3", "produceFactory":"测试公司2","addTime":"2014/7/8 0:00:00","remark":"","parentId":"B001"},{"batchId":"B004","produceOrderId":"生产订单4", "produceFactory":"测试公司3","addTime":"2014/7/8 0:00:00","remark":"","parentId":"B002"},{"batchId":"B005","produceOrderId":"生产订单5", "produceFactory":"测试公司4","addTime":"2014/7/8 0:00:00","remark":"","parentId":"B004"},{"batchId":"B006","produceOrderId":"生产订单6", "produceFactory":"外包公司1","addTime":"2014/7/8 0:00:00","remark":"","parentId":"B005"}]}</span>
2.Webservice返回json数据并去掉Xml头部。
时间: 2024-10-14 14:09:24