如果需要传参
var a=this.options.form.getWidgetByName("iyear").getValue()
var b=this.options.form.getWidgetByName("imonth").getValue()
var url="${servletURL}?viewlet=路径.cpt"
var config = {
iyear:a,
imonth:b
format:"excel"
}
FR.doHyperlinkByPost(url,config,"_self")