Primefaces的commandButton在页面刷新调用动作方法

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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;

解决方案

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>

解决方案

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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commandbutton

Primefaces的commandButton在页面刷新调用动作方法

问题描述