java - Concat JSF EL表达式中的两个String

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How to concatenate Strings in EL expression?

(1个答案)


5年前关闭。




我有以下el表达式:

<af:outputText value="#{viewArticle.publish ? ('Publish on ' + viewArticle.publishDate + ' by ' + viewArticle.publishFirstName + ' ' + viewArticle.publishLastName) : 'Draft version'}"/>

但是我越来越

java.lang.NumberFormatException: For input string: "Publish on "

如何加入字符串？

最佳答案

您可以使用 String.concat 函数:
<af:outputText value="#{viewArticle.publish ? 'Publish on '.concat(viewArticle.publishDate).concat(' by ').concat(viewArticle.publishFirstName).concat(' ').concat(viewArticle.publishLastName) : 'Draft version'}"/>