Primefaces的commandButton在页面刷新调用动作方法 [英] Primefaces commandButton calls action method on page refresh
问题描述
完全编辑：
也许我是混合PTED问题和misinter $ P $。简化我的$ C $后c中的问题可以简化为：我哪有prevent的＆LT;电话号码：的commandButton＆GT; 从执行它在页面刷新的操作方法（比如当你按F5键内的浏览器窗口）？
JSF code：
＆LT; HTML的xmlns =http://www.w3.org/1999/xhtml
的xmlns：H =http://java.sun.com/jsf/html
的xmlns：F =http://java.sun.com/jsf/core
的xmlns：UI =http://java.sun.com/jsf/facelets
的xmlns：P =http://primefaces.org/ui＆GT;
＆LT; H：身体GT;
＆LT; H：形式GT;
＆LT; H：的outputText值=＃{bugBean.number}/＆GT;
＆LT; H：的outputText值=＃{bugBean.isComplete（）}/＆GT;
＆LT;电话号码：身份证的commandButton =entryCommand值=加上
行动=＃{bugBean.increase（）}更新=@形的onComplete =＃{bugBean.complete（）}/＆GT;
＆LT; /小时：形式GT;
＆LT; / H：身体GT;
＆LT; / HTML＆GT;
支持bean code：
包huhu.main.managebean;
的Bean;
进口javax.enterprise.context.SessionScoped;
进口javax.inject.Named;
@Named
@SessionScoped
公共类BugBean实现Serializable {
私有静态最后长的serialVersionUID = 1L;
私人诠释数目;
私人布尔isComplete = FALSE;
公共无效增加（）{
数量++;
}
公共无效结束（）{
isComplete = TRUE;
}
公众诠释getNumber（）{
返回数;
}
公共无效setNumber（INT编号）{
this.number =号;
}
公共布尔isComplete（）{
返回isComplete;
}
公共无效的setComplete（布尔isComplete）{
this.isComplete = isComplete;
}
}
更新：
即使我删除的onComplete 这样的东西一点击＆LT;电话号码：的commandButton＆GT; 只有一次，柜台去每次上刷新页面。
＆LT; H：形式GT;
＆LT; H：的outputText值=＃{bugBean.number}/＆GT;
＆LT;电话号码：身份证的commandButton =entryCommand值=加上
行动=＃{bugBean.increase（）}更新=@形式/＆GT;
＆LT; /小时：形式GT;
该结构是缺乏Ajax的支持，由于缺少头部的定义，因为它似乎。在这种情况下，我只是增加了＆LT; H：头/＆GT; 正上方的＆LT; H：身体GT; - 标签，一切运行良好。
感谢所有贡献者！
Completely edited:
Maybe I was mixing problems and misinterpreted. After simplifying my code the question simplifies to: How can I prevent the <p:commandButton> from executing it's action method on page refresh (like when you hit F5 inside browser window)?
JSF Code:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<h:body>
<h:form>
<h:outputText value="#{bugBean.number}" />
<h:outputText value="#{bugBean.isComplete()}" />
<p:commandButton id="entryCommand" value="add"
action="#{bugBean.increase()}" update="@form" oncomplete="#{bugBean.complete()}"/>
</h:form>
</h:body>
</html>
backing bean code:
package huhu.main.managebean;
import java.io.Serializable;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
@Named
@SessionScoped
public class BugBean implements Serializable {
private static final long serialVersionUID = 1L;
private int number;
private boolean isComplete = false;
public void increase(){
number++;
}
public void complete(){
isComplete = true;
}
public int getNumber() {
return number;
}
public void setNumber(int number) {
this.number = number;
}
public boolean isComplete() {
return isComplete;
}
public void setComplete(boolean isComplete) {
this.isComplete = isComplete;
}
}
Update:
Even if I remove the oncomplete stuff like this an click the <p:commandButton> just once, the counter goes up on every page refresh.
<h:form>
<h:outputText value="#{bugBean.number}" />
<p:commandButton id="entryCommand" value="add"
action="#{bugBean.increase()}" update="@form"/>
</h:form>
The construct was lacking Ajax-support due to a missing head definition as it seems. In this case I just added <h:head/> right above the <h:body>-tag and everything worked fine.
Thanks to all contributors!
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