Hit match(char[] charArray , int begin , int length){
		return this.match(charArray , begin , length , null);
	}
Hit match(char[] charArray , int begin , int length){
		return this.match(charArray , begin , length , null);
	}
Hit match ( char [ ] charArray , int begin , int length ) { return this . match ( charArray , begin , length , null ) ; }
匹配词段
@param charArray
@param begin
@param length
@return Hit
匹配词段