update ui:repeat in p:commandButton

Question

我有一个复合组件，使用ui:repeat显示一个列表。

代码:

<ui:composition
    xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:p="http://primefaces.org/ui"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:c="http://java.sun.com/jstl/core"
    xmlns:composite="http://java.sun.com/jsf/composite">
<composite:interface>
</composite:interface>
<composite:implementation>
    <h:panelGroup layout="block" id="panel_topic" styleClass="panel_topic">
        <div class="title_topic">#{msg['tages.title']}</div>
        <ui:repeat value="#{tages._texts}" var="txt">
            <div class="tage">
                <p:commandLink type="button" styleClass="close" aria-hidden="true"
                               action="#{tages.removeText}" update="panel_topic">
                    <f:setPropertyActionListener target="#{tages._tar}" value="#{txt}"/>
                    <h:outputText escape="false" value="&amp;times;"/>
                </p:commandLink>
                <h:inputText id="text" styleClass="text" value="#{txt.text}"></h:inputText>
                <div class="color_item" style="background-color:#{txt.color}"></div>
            </div>
        </ui:repeat>
        <p:commandButton id="add_item" styleClass="add_item" actionListener="#{tages.addsTextss}" value="#{msg['tages.addItem']}"
                         update="panel_topic" >
        </p:commandButton>
    </h:panelGroup>
</composite:implementation>

my tages bean:

@ManagedBean(name = "tages")
@SessionScoped
public class Tages implements Serializable {
  private int _size = 0;
  private List<Tage> _texts = null;
  private Tage _tar = null;
private String[] _colors = new String[]{"red", "blue", "pink"};
public Tages() {
}
@PostConstruct
public void init() {
    _texts = new ArrayList<Tage>();
}
public void addsTextss() {
    Tage _tage = new Tage();
    _tage.setColor(_colors[_size]);
    _tage.setId(++_size);
    get_texts().add(_tage);
}
public void removeText() {
    if (_size - 1 <= get_tar().getId()) {
        --_size;
    }
    get_texts().remove(get_tar());
}
public List<Tage> get_texts() {
    return _texts;
}
public void set_texts(List<Tage> _texts) {
    this._texts = _texts;
}
public int get_size() {
    return _size;
}
public void set_size(int _size) {
    this._size = _size;
}
public Tage get_tar() {
    return _tar;
}
public void set_tar(Tage _tar) {
    this._tar = _tar;
}
}

my age bean:

public class Tage implements Serializable {
private int id=0;
private String text="";
private String color=null;
public int getId() {
    return id;
}
public void setId(int id) {
    this.id = id;
}
public String getText() {
    return text;
}
public void setText(String text) {
    this.text = text;
}
public String getColor() {
    return color;
}
public void setColor(String color) {
    this.color = color;
}
}

当点击p:commandButton(add_item)不更新ui:repeat

如果用c:forEach替换ui:repeat，则更新权限，但组件不保存状态。

如何更新ui:repeat

Answer 1

我有同样的错误之前与datatable和解决它，并解决它我自己查看下面的链接

JSF视图-在操作不更新视图时返回null