thymeleaf：日常使用总结

1.th:href

获得当前的根路径 th:href="@{/}"

2.select输出并自动选中

<select class="form-control select2" id="stage2CoachID" name="stage2CoachID"
     th:value="${class.stage2CoachID}">
     <option value="">请选择</option>
     <th:block th:each="entityCoach : ${listEntityCoach}">
         <option th:value="${entityCoach.coachID}" th:text="${entityCoach.userName}"
                 th:selected="${entityCoach.coachID == class.stage2CoachID}">教练名称</option>
     </th:block>                               
</select>

3.map方法

判断是否有指定key值时，必须用get方法，不能用[]

正确写法：

th:class="${mapTeachTrain.get(key)}!=null?${mapTeachTrain.get(key)}:'book'"

错误写法

th:class="${mapTeachTrain[key]}!=null?${mapTeachTrain[key]}:'book'"

key是定义的一个变量，完整代码：

<td th:with="key=${car.carID+'-'+car.coachID+'-'+detail.startTime+'-'+detail.endTime}" 
    th:class="${mapTeachTrain.get(key)}!=null?${mapTeachTrain.get(key)}:'book'"
    th:data="${key}" th:id="${car.carID+detailStat.index}"></td>