JSP：访问 JSP EL 标签内的枚举

发布于 2024-10-20 10:12:03 字数 560 浏览 1 评论 0原文

我的 java 枚举如下所示：

public enum EmailType { HOME, WORK, MOBILE, CUSTOMER_SERVICE, OTHER }

在 JSP 中，我试图执行如下所示的操作，但这是行不通的。

<c:choose>
          <c:when test="${email.type == EmailType.HOME}">(Home)</c:when>
          <c:when test="${email.type == EmailType.WORK}">(Work)</c:when>
</c:choose>

谷歌搜索后，我找到了这些链接：Enum inside a JSP。但是，我想避免在 JSP 中使用 scriplet。如何访问 EL 标签内的 java 枚举并进行比较？请帮忙。

原文

My java enum looks like this:

public enum EmailType { HOME, WORK, MOBILE, CUSTOMER_SERVICE, OTHER }

In JSP, I am trying to do sth like below, which is not working.

<c:choose>
          <c:when test="${email.type == EmailType.HOME}">(Home)</c:when>
          <c:when test="${email.type == EmailType.WORK}">(Work)</c:when>
</c:choose>

After googling, I found these links: Enum inside a JSP. But, I want to avoid using scriplets in my JSP. How can I access the java enum inside EL tag and do the comparision?? Please help.

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一曲琵琶半遮面シ 2024-10-27 10:12:03

当枚举被序列化时，它就变成了字符串。所以只需使用字符串比较即可。

<c:choose>
          <c:when test="${email.type == 'HOME'}">(Home)</c:when>
          <c:when test="${email.type == 'WORK'}">(Work)</c:when>
</c:choose>

When an enum is serialized it becomes a string. So just use a string compare.

<c:choose>
          <c:when test="${email.type == 'HOME'}">(Home)</c:when>
          <c:when test="${email.type == 'WORK'}">(Work)</c:when>
</c:choose>

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