附加到Primefaces的命令链接时不会调用属性操作侦听器

时间:2013-03-11 17:28:48

标签: jsf-2 primefaces managed-bean view-scope

我正在使用Primefaces,我遇到的问题是没有触发setPropertyActionListener,因此没有设置视图作用域托管bean的属性。

我的观点:

<p:column>
    <p:commandLink value="Supprimer" oncomplete="confirmation.show()"  >
        <f:setPropertyActionListener value="#{car}" target="#{typeMB.selectedType}" />  
    </p:commandLink>
</p:column>

managed-bean具有selectedType属性,其中既有getter又有setter。

我的托管bean:

@ManagedBean(name="typeMB")
@ViewScoped
public class TypeManagedBean implements Serializable {

    private static final long serialVersionUID = 1L;
    private Type newtype;  
    private Type selectedType;

    @ManagedProperty(value="#{TypeDao}")
    GenericDao<Type> typeDAO;

    public TypeManagedBean(){
        newtype = new Type();
    }

    public List<Type> getList_types() {     
        return typeDAO.readAll();
    }

    public void setTypeDAO(GenericDao<Type> typeDAO) {
        this.typeDAO = typeDAO;
    }

    public GenericDao<Type> getTypeDAO() {
        return typeDAO;
    }

    public Type getNewtype() {
        return newtype;
    }

    public void setNewtype(Type newtype) {
        this.newtype = newtype;
    }       

    public Type getSelectedType() {
        if(selectedType != null)
        System.out.println("get : le selected type : "+selectedType.getLibelle());
        return selectedType;
    }

    public void setSelectedType(Type selectedType) {        
        this.selectedType = selectedType;
        System.out.println("set le selected type : "+selectedType.getLibelle());
    }

}

我能做些什么来达到我的目的?

2 个答案:

答案 0 :(得分:3)

根据<p:commandLink>process部分以及Primefaces (3.5) user's guide发表的声明,@all属性的默认值为process="@this",这意味着整个页面将被提交。因此,此提交可能存在一些验证错误,从而阻止调用侦听器方法。否则,它应该按照您发布的代码按预期工作。

对上述假设的一个很好的测试是放置{{1}}属性。因为'与要执行的链接相关联的操作,必须部分提交链接本身',正如BalusC在Primefaces lead on this forum中完美解释的那样,我们需要添加属性来进行测试。

要检查的另一件事是您的命令组件属于表单,并且您的视图不包含嵌套表单。

答案 1 :(得分:1)

以下代码正在运行:

Managed bean:

package app.so.dev.web.controller;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import javax.annotation.PostConstruct;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

import app.so.dev.web.model.Student;

@ManagedBean(name = "so15344819")
@ViewScoped
public class SO15344819 implements Serializable {

    private static final long serialVersionUID = 6686378446131077581L;
    private List<Student> students;
    private Student selectedStudent;

    @PostConstruct
    public void init() {
        students = new ArrayList<Student>();
        students.add(new Student("Student 1"));
        students.add(new Student("Student 2"));
    }

    public List<Student> getStudents() {
        return students;
    }

    public void setStudents(List<Student> students) {
        this.students = students;
    }

    public Student getSelectedStudent() {
        return selectedStudent;
    }

    public void setSelectedStudent(Student selectedStudent) {
        this.selectedStudent = selectedStudent;
    }
}

和xhtml:

<ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core" xmlns:p="http://primefaces.org/ui" template="/WEB-INF/templates/globalTemplate.xhtml">

    <ui:define name="title">15344819</ui:define>
    <ui:define name="content">
        <p:growl id="growl" showDetail="true" />

        <h:form id="form">
            <p:dataTable id="students" value="#{so15344819.students}" var="student">
                <p:column>
                        <p:commandButton id="selectButton" update=":form:display" oncomplete="studentDialog.show()" icon="ui-icon-search" title="View">
                           <f:setPropertyActionListener value="#{student}" target="#{so15344819.selectedStudent}" />
                       </p:commandButton>
                   </p:column>
            </p:dataTable>

            <p:dialog header="Student Detail" widgetVar="studentDialog" resizable="false" id="studentDlg"
                            showEffect="fade" hideEffect="explode" modal="true">

                    <h:panelGrid id="display" columns="2" cellpadding="4" style="margin:0 auto;">

                        <h:outputText value="Name:" />
                        <h:outputText value="#{so15344819.selectedStudent.name}" style="font-weight:bold"/>                                               

                    </h:panelGrid>

                </p:dialog>
        </h:form>
    </ui:define>

</ui:composition>

环境:

  • JSF Mojarra 2.1.7
  • Primefaces 3.4.2
  • JBoss AS 7.1

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