关联函数： web_reg_save_param_ex可替代web_reg_save_param
情景一：在首页获取到sessionid，登录功能需要用到
1、web_reg_save_param_ex()函数
web_reg_save_param_ex("ParamName=newParam",
"LB/IC=ll",
"RB/IC=RR",
"Ordinal=all",
"SaveLen=-1",
"DFEs=UrlEncoding",
SEARCH_FILTERS,
"Scope=body",//搜索范围，headers，body；相当于web_reg_save_param()中的search
LAST);
2、web_reg_save_param()函数
web_reg_save_param("outFlightVal",
"LB=outboundFlight value=",
"RB= checked >",
"Search=body",
LAST );
