EL表达式

eq相等 ne、neq不相等， 
gt大于， lt小于 
gt大于， lt小于 
gte、ge大于等于   
lte、le 小于等于   
not非   mod求模   
is [not] div by是否能被某数整除   
is [not] even是否为偶数   
is [not] even by $b即($a / $b) % 2 == 0   
is [not] odd是否为奇   
is not odd by $b即($a / $b) % 2 != 0 
示例： 
equal/ not equal/ greater than/ less than/ less than or equal/ great than or equal/后面的