我希望用户为 JSF 的 inputText 组件输入一个或多个名称.所以我在考虑这样的托管 bean:
I want the user to enter one or more names to the JSF's inputText components. So I'm thinking of a managed bean like this:
public class MyBean { private String[] names; public String[] getNames() { return names; } public void setNames(String[] names) { this.names = names; } }但是,如何将 JSF 的 inputText 组件映射到此数组属性?
But, how do I map the JSF's inputText components to this array property?
推荐答案首先,您需要在 bean 的(后)构造函数中保留数组.例如
First, you need to preserve the array in bean's (post)constructor. E.g.
public MyBean() { names = new String[3]; }然后,您可以或者通过硬编码索引访问它们
Then, you can either just access them by an hardcoded index
<h:inputText value="#{myBean.names[0]}" /> <h:inputText value="#{myBean.names[1]}" /> <h:inputText value="#{myBean.names[2]}" />或使用 和 varStatus 来通过动态索引访问它们
or use <ui:repeat> with a varStatus to access them by a dynamic index
<ui:repeat value="#{myBean.names}" varStatus="loop"> <h:inputText value="#{myBean.names[loop.index]}" /> </ui:repeat>不要不要像
<ui:repeat value="#{myBean.names}" var="name"> <h:inputText value="#{name}" /> </ui:repeat>提交表单时不起作用,因为 String 没有值的 setter(getter 基本上是 toString() 方法).
It won't work when you submit the form, because String doesn't have a setter for the value (the getter is basically the toString() method).
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如何将多个 inputText 映射到数组属性?
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