private static List<Element> generateCommColumns(List<IntrospectedColumn> columns, String prefix, boolean bracket, int type) {
    """
	通用遍历columns
	@param columns
	@param prefix
	@param bracket
	@param type    1:key,2:value,3:set
	@return
    """
        return generateCommColumns(columns, prefix, bracket, type, false);
    }
private static List<Element> generateCommColumns(List<IntrospectedColumn> columns, String prefix, boolean bracket, int type) {
        return generateCommColumns(columns, prefix, bracket, type, false);
    }
private static List < Element > generateCommColumns ( List < IntrospectedColumn > columns , String prefix , boolean bracket , int type ) { return generateCommColumns ( columns , prefix , bracket , type , false ) ; }
通用遍历columns
@param columns
@param prefix
@param bracket
@param type    1:key,2:value,3:set
@return
通用遍历columns