JSF、Richfaces学习

http://wenku.baidu.com/link?url=2vQ4d4SoRVorLmbRLWlgyanScSDFLph_oTwHyUZJQJx_lYmBWJlpidjMQoBUDnEFnfuxxqXXYDhEm-U8PzKrr4OQ_GLUvUkhsApmXr2eW0a

http://blog.csdn.net/sonikk/article/details/9875239

用richfaces标签实现页面定时刷新功能 - [richfaces]

2009-07-30

版权声明：转载时请以超链接形式标明文章原始出处和作者信息及本声明
http://www.blogbus.com/hysheart-logs/43212009.html

一句话即可，reRender="table"　表示要刷新的页面ＩＤ．interval代表多少时间刷新一次，600000等于一分钟，１０００等于一秒．

<a4j:poll interval="600000" reRender="table"></a4j:poll>

通过这个demo，可以理解richfaces的基本运行方式，对该技术有一个感性认识。

其中有ajax标签，可以自动同步数据到服务器端，方便开发人员，当然用得不好，也可能造成性能低下的问题！

演示效果：

1.输入框当中默认是5

2.修改为8

3. 右边的菜单会自动更新成8个选项

选中option3后，会出现如下日志输入：

官方文档：

http://docs.jboss.org/richfaces/latest_4_X/vdldoc/a4j/ajax.html

TestBean.java

[java] view plaincopy

package com.ccbupt.kaoshi.xuanze;
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.ManagedProperty;
import javax.faces.bean.SessionScoped;
import javax.faces.event.ValueChangeEvent;
import javax.faces.model.SelectItem;
import org.richfaces.demo.tables.model.capitals.Capital;
import com.ccbupt.kaoshi.service.UserRoleService;
@ManagedBean(name="testBean")
@SessionScoped
public class TestBean implements Serializable{
private static final long serialVersionUID = 1109360897806292248L;
private List<SelectItem> capitalsOptions = null;
private String value = "";
private int count = 5;
/**@ManagedProperty(value="userRoleServices")
private UserRoleService userRoleService;
*/
@PostConstruct
public void init() {
capitalsOptions = new ArrayList<SelectItem>();
//System.out.println(count);
for(int i = 0; i < count; i++) {
capitalsOptions.add(new SelectItem(i,"option"+i));
}
}
/* public void valueChanged(ValueChangeEvent event) {
capitalsOptions.clear();
System.out.println(count);
if (null != event.getNewValue()) {
capitalsOptions = new ArrayList<SelectItem>();
for (int i = 0; i < count; i++) {
capitalsOptions.add(new SelectItem("1","二"));
}
}
}
*/
public List<SelectItem> getCapitalsOptions() {
return capitalsOptions;
}
public void setCapitalsOptions(List<SelectItem> capitalsOptions) {
this.capitalsOptions = capitalsOptions;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
/** public UserRoleService getUserRoleService() {
return userRoleService;
}
public void setUserRoleService(UserRoleService userRoleService) {
this.userRoleService = userRoleService;
}
*/
public void getTiJiao() {
System.out.println(value + "已被选中" + count);
}
public int getCount() {
return count;
}
public void setCount(int count) {
capitalsOptions.clear();
for (int i = 0; i < count; i++) {
capitalsOptions.add(new SelectItem(i,"option"+i));
}
this.count = count;
}
}

test.html

[html] view plaincopy

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html 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:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<link
href="${facesContext.externalContext.requestContextPath}/css/source.css"
rel="stylesheet" type="text/css" />
<style type="text/css">
body {
background-image:
url(${facesContext.externalContext.requestContextPath}/images/page_bg.gif)
;
}
</style>
</h:head>
<div style="test-align: center;">
<h:form>
<h:panelGrid columns="2" border="0" cellpadding="0" cellspacing="0"
columnClasses="vertical-align-top" style="bgcolor:red;">
<h:column>
</h:column>
<h:column>
<h:panelGrid columns="6" border="0" cellpadding="0" cellspacing="0"
columnClasses="vertical-align-top" style="bgcolor:red;"
styleClass="login_layout">
<h:inputText value="#{testBean.count}" >
<a4j:ajax event="keyup" render="second" />
</h:inputText>
<a4j:outputPanel id="second" layout="block">
<rich:select value="#{testBean.value}" render="yiXuan">
<f:selectItems value="#{testBean.capitalsOptions}" />
</rich:select>
</a4j:outputPanel>
<h:commandButton action="#{testBean.getTiJiao}" value="提交"
style="width:50pt;color:blue;"></h:commandButton>
<h:outputText id="yixuan" style="width:50pt;color:red;"
value="#{textBean.value}"></h:outputText>
</h:panelGrid>
</h:column>
</h:panelGrid>
</h:form>
</div>
<h:body>
</h:body>
</html>