一些AJAX请求后ViewScoped CDI豆重建AJAX、ViewScoped、CDI
我有一个CDI ViewScoped豆和JSF页面。经过几次的AJAX请求豆莫名其妙地重新创建。 下面是应用程序的完整code：
的index.xhtml
＆LT; HTML的xmlns =http://www.w3.org/1999/xhtml
的xmlns：H =http://xmlns.jcp.org/jsf/html
的xmlns：F =http://java.sun.com/jsf/core
的xmlns：UI =http://xmlns.jcp.org/jsf/facelets＆GT;
＆LT; H：头＆GT;
＆LT;冠军＆GT;的facelet标题＆LT; /标题＆GT;
＆LT; / H：头＆GT;
＆LT; H：身体GT;
你好，从Facelets的
＆LT; H：形式GT;
＆LT; H：inputText的值=＃{questionBean.newTag}＆GT;＆LT; /小时：inputText的＆GT;
＆LT; H：的commandButton值=添加标签＆GT;
＆LT; F：AJAX监听=＃{questionBean.addTag（）}执行=@形式呈现=@形与GT;＆LT; / F：AJAX＆GT;
＆LT; / H：的commandButton＆GT;
＆LT; UI：重复值=＃{questionBean.tagsOfQuestion}VAR =标签＆GT;
＆LT; H：outputLabel值=＃{}标签＆GT;＆LT; / H：outputLabel＆GT;
＆LT; H：的commandButton值=X＆GT;
＆LT; F：Ajax事件=点击监听器=＃{questionBean.removeTag（标签）}渲染=@表执行=@形式/＆GT;
＆LT; / H：的commandButton＆GT;
＆LT; / UI：重复＆GT;
＆LT; /小时：形式GT;
＆LT; / H：身体GT;
＆LT; / HTML＆GT;
下面是后盾CDI豆 QuestionBean.java
进口的java.util.ArrayList;
进口java.util.Date;
进口的java.util.List;
进口javax.faces.view.ViewScoped;
进口javax.inject.Named;
@Named
@ViewScoped
公共类QuestionBean {
私人字符串newTag;
私人列表＆LT;字符串＆GT; tagsOfQuestion =新的ArrayList＆LT;字符串＆GT;（）;
私人日期dateCreated会=新的日期（）;
公共QuestionBean（）{
的System.out.println（创建日期：+ dateCreated会）;
}
公共无效addTag（）{
如果（！newTag.isEmpty（））{
getTagsOfQuestion（）加（newTag）。
}
newTag =;
}
公共无效removeTag（字符串tagToRemove）{
。getTagsOfQuestion（）删除（tagToRemove）;
}
公共字符串getNewTag（）{
返回newTag;
}
公共无效setNewTag（字符串newTag）{
this.newTag = newTag;
}
公开名单＆LT;字符串＆GT; getTagsOfQuestion（）{
返回tagsOfQuestion;
}
公共无效setTagsOfQuestion（名单＆LT;字符串＆GT; tagsOfQuestion）{
this.tagsOfQuestion = tagsOfQuestion;
}
}
解决方案
嗯，我有同样的问题，当我尝试了 - Netbeans的8和JSF 2.2.0了。
我的作品后，我更新的Glassfish的 - 抢javax.faces.jar从这里 - 我花了很最新的，2.2.8-02，换成一个在GlassFish中/ GlassFish中/模块
不知道是什么错误或者什么时候它虽然固定的。
希望它能为你工作了。
I have a CDI ViewScoped bean and a JSF page. After a couple of AJAX requests the bean somehow recreated. Here is the full code of the application:
index.xhtml
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
<h:head>
<title>Facelet Title</title>
</h:head>
<h:body>
Hello from Facelets
<h:form>
<h:inputText value="#{questionBean.newTag}"></h:inputText>
<h:commandButton value="Add Tag">
<f:ajax listener="#{questionBean.addTag()}" execute="@form" render="@form"></f:ajax>
</h:commandButton>
<ui:repeat value="#{questionBean.tagsOfQuestion}" var="tag">
<h:outputLabel value="#{tag}"></h:outputLabel>
<h:commandButton value="X">
<f:ajax event="click" listener="#{questionBean.removeTag(tag)}" render="@form" execute="@form"/>
</h:commandButton>
</ui:repeat>
</h:form>
</h:body>
</html>
Here is the backing CDI bean QuestionBean.java
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.faces.view.ViewScoped;
import javax.inject.Named;
@Named
@ViewScoped
public class QuestionBean {
private String newTag;
private List<String> tagsOfQuestion = new ArrayList<String>();
private Date dateCreated = new Date();
public QuestionBean(){
System.out.println("Date Created : "+dateCreated);
}
public void addTag(){
if(!newTag.isEmpty()){
getTagsOfQuestion().add(newTag);
}
newTag = "";
}
public void removeTag(String tagToRemove){
getTagsOfQuestion().remove(tagToRemove);
}
public String getNewTag() {
return newTag;
}
public void setNewTag(String newTag) {
this.newTag = newTag;
}
public List<String> getTagsOfQuestion() {
return tagsOfQuestion;
}
public void setTagsOfQuestion(List<String> tagsOfQuestion) {
this.tagsOfQuestion = tagsOfQuestion;
}
}
解决方案
Well I had the same problem when I tried it - Netbeans 8 and JSF 2.2.0 too.
Works for me after I updated Glassfish - grab javax.faces.jar from here - I took the very newest, 2.2.8-02, and replaced the one in glassfish/glassfish/modules.
Don't know what the error was or exactly when it was fixed though.
Hope it works for you too.
