String 类是不可变的。它没有实例值的setter。 getter在这个构造中基本上是由EL隐式调用的 Object＃toString（）方法，它巧妙地返回字符串值本身。

The String class is immutable. It doesn't have a setter for the instance value. The getter is in this construct basically the Object#toString() method as implicitly called by EL, which coincidentally returns the string value itself.

您需要将更改的值设置为新的列表项。您可以通过列表中的大括号进行此操作，您可以通过列表索引：＃{myBean.listOfStrings [index]} 。

You need to set the changed value as a new list item instead. You can do this via the brace notation on the list whereby you pass the list index: #{myBean.listOfStrings[index]}.

所以，这应该做，使用 UIData＃getRowIndex（） 作为列表索引：

So, this should do, making use of UIData#getRowIndex() as list index:

<h:dataTable binding="#{table}" value="#{myBean.listOfStrings}" var="row">
    <h:column> 
         <h:inputText value="#{myBean.listOfStrings[table.rowIndex]}" />
    </h:column>
</h:dataTable>

（注意：绑定的值表达式是原样的！不要绑定到bean属性）

(note: the value expression of binding is as-is! don't bind it to a bean property)

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