Java Thymeleaf - 评估 SpringEL 表达式的异常
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Thymeleaf - Exception evaluating SpringEL expression
提问by user2125722
I am using #strings.substr()function and it gives the following error:
我正在使用#strings.substr()函数，它给出了以下错误：
There was an unexpected error
(type=Internal Server Error, status=500). Exception evaluating SpringEL expression:"#strings.substr(status,iter.index,iter.index+1)"(init:37)
出现意外错误
(type=Internal Server Error, status=500)。评估 SpringEL 表达式的异常："#strings.substr(status,iter.index,iter.index+1)"(init:37)
This is the code:
这是代码：
<tbody>
<tr th:each="task,iter : ${taskList}">
<td th:text="${task.id}"></td>
<td th:text="${task.task}"></td>
<td th:switch="${#strings.substr(status,iter.index,iter.index+1)}">
<div th:case="'0'"><input type="checkbox"/></div>
<div th:case="'1'"><input type="checkbox" checked="checked"/></div>
<div th:case="*"><input type="checkbox" id="checkbtn" checked="checked"/></div>
</td>
</tr>
</tbody>
This is the error log:
这是错误日志：
Exception evaluating SpringEL expression: "#strings.substr(status,iter.index,iter.index+1)" (init:37)] with root cause
org.springframework.expression.spel.SpelEvaluationException: EL1004E:(pos 9): Method call: Method substr(netgloo.models.Exit,java.lang.Integer,java.lang.Integer) cannot be found on org.thymeleaf.expression.Strings type
I guess the error is due to the fact iter.indexis of type Integerand the function expects an int. So how do I solve this issue ? Thanks
我猜这个错误是由于iter.index是Integer类型并且该函数需要一个int。那么我该如何解决这个问题呢？谢谢
采纳答案by RoToRa
No, the problem is (quoting from your error message):
不，问题是（引用您的错误消息）：
Method substr [...] cannot be found on org.thymeleaf.expression.Strings type
在 org.thymeleaf.expression.Strings 类型上找不到方法 substr [...]
That means #stringsdoesn't have a method called substr. You probably mean substring.
这意味着#strings没有名为substr. 你可能是说substring。
See http://www.thymeleaf.org/doc/tutorials/3.0/usingthymeleaf.html#strings
见http://www.thymeleaf.org/doc/tutorials/3.0/usingthymeleaf.html#strings
