java web问题，request接收的值只有一半，怎么解？谢谢

 {"name":"显示器描述","labs":"FHD，WLED屏","labtype":"SELECT"},{"name":"显卡核心","labs":"NVDIA","labtype":"SELECT"},{"name":"显卡属性","labs":"独立显卡","labtype":"SELECT"},{"name":"显卡容量","labs":"4GB","labtype":"SELECT"},{"name":"显卡型号","labs":"Intel GMA HD 630","labtype":"SELECT"},{"name":"产品定位","labs":"家用一体机","labtype":"SELECT"},{"name":"摄像头","labs":"HP TrueVision FHD IR摄像头","labtype":"SELECT"},{"name":"扬声器","labs":"内置音箱","labtype":"SELECT"},{"name":"音频系统","labs":"B

到B那里就没了，实际是"B&W",接收用的是URLDecoder.decode(request.getParameter("stemplateValue"), "UTF-8")
现在确定前台输出的json没问题