#author("2019-11-15T14:35:15+08:00","default:Admin","Admin") Thymeleaf

集合 †

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#maps †

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工具对象表达式。常用于日期、集合、数组对象的访问。这些工具对象就像是java对象，可以访问对应java对象的方法来进行各种操作。

例如：

<div th:if="${#maps.size(stuReqBean.students[__${rowStat.index}__].score) != 0}">
  <label>${score.key}:</label><input type="text" th:value="${score.value}"></input>
</div>

<div th:if="${#maps.isEmpty(stuReqBean.students[__${rowStat.index}__].score)}">
  ...do something...
</div>

#lists †

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${#lists.toList(object)}
${#lists.size(list)}
${#lists.isEmpty(list)}
${#lists.contains(list, element)}
${#lists.containsAll(list, elements)}

#sets †

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${#sets.toSet(object)}
${#sets.size(set)}
${#sets.isEmpty(set)}
${#sets.contains(set, element)}
${#sets.containsAll(set, elements)}

#aggregates †

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集合为空返回null

//求和
${#aggregates.sum(collection)}
//均值
${#aggregates.avg(collection)}

日期时间 †

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#dates †

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${#dates.format(date, 'yyyy-MM-dd hh:mm:ss')}
${#dates.arrayFormat(datesArray, 'yyyy-MM-dd hh:mm:ss')}
${#dates.listFormat(datesList, 'yyyy-MM-dd hh:mm:ss')}
${#dates.setFormat(datesSet, 'yyyy-MM-dd hh:mm:ss')}

#calendars †

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#numbers †

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#strings †

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//转换字符串
${#strings.toString(obj)}
//字符长度
${#strings.length(str)}
//空值判断
${#strings.isEmpty(str)}
//设置默认值
${#strings.defaultString(str,default)}
//是否存在子串
${#strings.contains(name,'ez')} 
//去除空格
${#strings.trim(str)}
//相等判断
${#strings.equals(first, second)}
${#strings.equalsIgnoreCase(first, second)}
//字符拼接
${#strings.concat(values...)}

#objects †

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#codeprettify{{
}}

#bools †

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//true
${#bools.isTrue(obj)}
${#bools.arrayIsTrue(objArray)}
${#bools.listIsTrue(objList)}
${#bools.setIsTrue(objSet)}
//false
${#bools.isFalse(cond)}
${#bools.arrayIsFalse(condArray)}
${#bools.listIsFalse(condList)}
${#bools.setIsFalse(condSet)}
//集合所有项   &&
${#bools.arrayAnd(condArray)}
${#bools.listAnd(condList)}
${#bools.setAnd(condSet)}
//集合所有项   ||
${#bools.arrayOr(condArray)}
${#bools.listOr(condList)}
${#bools.setOr(condSet)}

#arrays †

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#codeprettify{{
}}

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