联图网调用API: 
    "http://www.liantu.com/tiaoma/query.php"

请求参数:
     ean   商品条形码编号

返回Json数据:
"ean"         商品条形码
"name"        空
"titleSrc"    商品名称(返回的是图片url，不是文本,需要特殊处理)
"guobie"      商品国别
"place"       商品产地
"price"       参考价格
"supplier"    供应商名称
"sort_id"     商品类别
"faccode"     生产厂商代码
"fac_name"    生产厂商名称
"fac_status"  注册状态

  Get请求 :  http://www.liantu.com/tiaoma/query.php?ean=6924862100033
  Response:  {"ean":"6924862100033","name":"","titleSrc":"http:\/\/www.liantu.com\
  /tiaoma\/eantitle.php?title=KzRwWk9PUThiNkhSNmpWVDlxTDRVbDd5UG5qczV5UGc=","guobie":
  "\u4e2d\u56fd","place":"\u4e2d\u56fd\u6b66\u6c49\u5e02\u4e1c\u897f\u6e56\u533a\u4e03
  \u652f\u6c9f","price":2.5,"supplier":"\u6b66\u6c49\u767e\u4e8b\u53ef\u4e50\u996e\u6599
  \u6709\u9650\u516c\u53f8","sort_id":7,"faccode":"69248621","fac_name":"\u6b66\u6c49\u767e
  \u4e8b\u53ef\u4e50\u996e\u6599\u6709\u9650\u516c\u53f8","fac_status":"\u6709\u6548"}
 
  Json解析后结果如上图"百事可乐"所示