【发布时间】：2016-12-04 00:26:46
【问题描述】：
我正在开发一个使用多线程和 JSF 2.2 套接字、richafes 4.5、Tomcat 7 的即时消息应用程序。
当 client1 向 client2 发送消息时，后者会更新 bean 属性，但 client2 组件只有在我更新页面时才会更改其值。
有没有办法在facescontext发布后定期更新组件？
线程客户端：
public class ThreadWait extends Thread {
public void run() {
String msg;
try {
while ((msg = input.readLine()) != null) {
editorBean.setMsg(msg);
/*** KO because the FacesContext already released *******/
UIViewRoot viewRoot = viewHandler.createView(context, context.getViewRoot().getViewId());
context.setViewRoot(viewRoot);
context.renderResponse();
/***************/
}
} catch (IOException e) {
System.err.println("IOException" + e);
}
}
}
Bean Message.java：
public void send() {
FacesContext context = FacesContext.getCurrentInstance();
Application application = context.getApplication();
ViewHandler viewHandler = application.getViewHandler();
UIViewRoot viewRoot = viewHandler.createView(context, context.getViewRoot().getViewId());
if (connected) {
client.sendMessage(treeBean.getCurrentSelection() + "{MESSAGE}" + editor.getMsg());
return;
}
client = new Client(editor, signIn, context, application, viewHandler, viewRoot);
// test if we can start the Client
if (!client.runConnexion(treeBean.getCurrentSelection() + "{MESSAGE}" + editor.getMsg()))
return;
connected = true;
return;
}
Bean 编辑器：
@ManagedBean
@SessionScoped
public class EditorBean implements Serializable {
private static final long serialVersionUID = 1L;
private String msg;
/**
* @return the msg
*/
public String getMsg() {
return msg;
}
/**
* @param msg
* the msg to set
*/
public void setMsg(String msg) {
this.msg = msg;
}
public EditorBean() {
}
public EditorBean(String msg) {
super();
this.msg = msg;
}
}
index.xhtml:
<?xml version="1.0" encoding="UTF-8"?>
<!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:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:rich="http://richf`enter code here`aces.org/rich" xmlns:a4j="http://richfaces.org/a4j"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
<h:head>
<title>Welcome</title>
</h:head>
<h:body>
<h:form>
<table>
<tr>
<td>
<div>
<rich:editor id="editor" toolbar="full" value="#{editorBean.msg}" style="margin-bottom: 1em">
</rich:editor>
<h:commandButton value="Send" action="#{message.send}" type="submit"></h:commandButton>
</div>
</td>
</tr>
</table>
</h:form>
</h:body>
</html>
【问题讨论】：
标签： jsf