/**
  * 数据打包,按 XML 格式打包,顺序参见<A href ={@docRoot}/dataStructure/tb.html#PrpLECRecommendation描述/A>表字段
  *
  * @return: String 返回打包后字符串
  */
 public String encode() {
   StringBuffer strReturn = new StringBuffer(256);
   strReturn.append(StrTool.cTrim(recommend));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(StrTool.cTrim(recommended));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(ChgData.chgData(sendtimes));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(StrTool.cTrim(success));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(StrTool.cTrim(registered));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(StrTool.cTrim(field1));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(StrTool.cTrim(field2));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(StrTool.cTrim(field3));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(StrTool.cTrim(makedate));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(StrTool.cTrim(maketime));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(StrTool.cTrim(modifydate));
   strReturn.append(SysConst.PACKAGESPILTER);
   strReturn.append(StrTool.cTrim(modifytime));
   return strReturn.toString();
 }