我正在我的大学工作，这是在社交媒体网站上，我遇到了一个问题。我有我的jsf页面，我还创建了一个java类（更准确地说是在Web上），用于在它们之间聊天。用户应该正在查看朋友的个人资料，其中有一个他/她可以按下的按钮，并且会出现一个新的JFrame用于聊天。
但是，Chatbox.java已经有一个main。我修改了一些代码，改变了主要功能。它看起来像这样：
@ManagedBean(name="chatbox")
@SessionScoped
public class ChatBox extends JFrame implements ActionListener {
String name;
InetAddress iadr;
int port;
MulticastSocket so;
JTextArea txt = new JTextArea();
JScrollPane sp = new JScrollPane(txt);
JTextField write = new JTextField();
JButton quit = new JButton("Go Offline");
public ChatBox(String username, String groupAdr, int portNr) throws IOException {
name = username;
iadr = InetAddress.getByName(groupAdr);
port = portNr; so = new MulticastSocket(port);
so.joinGroup(iadr);
new Receiver(so,txt);
setTitle("Chatting with "+ name);
txt.setEditable(true);
add(quit,BorderLayout.NORTH);
add(sp,BorderLayout.CENTER);
add(write,BorderLayout.SOUTH);
quit.addActionListener(this);
write.addActionListener(this);
setSize(400,250);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public void sendMess(String s) {
byte[] data = (name + ": " + s).getBytes();
DatagramPacket packet = new DatagramPacket(data,data.length,iadr,port);
try {
so.send(packet);
} catch(IOException ie) {
Toolkit.getDefaultToolkit().beep();
JOptionPane.showMessageDialog(null, "Data overflow !");
}
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == write) {
sendMess(write.getText());
write.setText("");
}
else if (e.getSource() == quit) {
sendMess("Offline");
try {
so.leaveGroup(iadr);
} catch(IOException ie) {
Toolkit.getDefaultToolkit().beep();
JOptionPane.showMessageDialog(null, "Data overflow, connection error !");
}
so.close(); dispose(); System.exit(0);
}
}
public void mmm()throws IOException {
String in = JOptionPane.showInputDialog(null,"What's your name?");
// if(arg.length>0) in = arg[0];
new ChatBox(in, "224.0.0.7",3);
}
class Receiver implements Runnable {
Thread activity = new Thread(this);
MulticastSocket so;
JTextArea txt;
Receiver(MulticastSocket sock, JTextArea txtAr) {
so = sock;
txt = txtAr;
activity.start();
}
public void run() {
byte[] data = new byte[1024];
while(true) try {
Calendar calendar = Calendar.getInstance();
java.util.Date now = calendar.getTime();
java.sql.Timestamp currentTimestamp = new java.sql.Timestamp(now.getTime());
DatagramPacket packet = new DatagramPacket(data,data.length);
so.receive(packet);
String mess = new String(data,0,packet.getLength());
txt.append(currentTimestamp+ "\n" +mess+ "\n");
System.out.println(mess);
} catch(IOException e) {
break;
}
}
}
}
这是jsf页面，我试图通过按下按钮来调用Chatbox.java：
<h:body>
<div id="top">
<ui:insert name="top">
<h:form>
<div style="height: 70px; margin: 10px auto 0px; background: #00A2E8; text-align: left;">
<a href="../User/userhome.xhtml?faces-redirect=true"><img src="../Images/logo.png" style="width: 100px; height: 70px; float: none;"/></a>
<div style="float: right; text-align: right;">
<h:panelGrid columns="2">
Hello,<h:outputLabel value="#{usersController.username}" />
<h:commandButton value="Logout" action="/Guest/guesthome.xhtml?faces-redirect=true"/>
</h:panelGrid>
</div>
</div>
</h:form>
</ui:insert>
</div>
<div id="content" class="center_content" style="background-image: url('./Images/backgroundblue.jpg'); background-repeat: no-repeat;
background-size:cover;">
<ui:insert name="content">
<div id="content2" style="background-color: #CCC; width: 1000px; margin: 0 auto; opacity: 1;
filter: alpha(opacity=40);">
<h:form style="margin-left: 300px;">
<ui:include src="/User/usertemplate/sprybar.xhtml" />
</h:form>
<br></br>
<br></br>
<br></br>
<h:form style="border-bottom: 1px solid #AFAFAF;"></h:form>
<br></br>
<h:form style="text-align: center;">
<div style="text-align: center;">
<h1><h:outputText value="#{usersController.selected.firstname}" title="#{bundle.ViewUsersTitle_firstname}"/>
<h:outputText value=" " />
<h:outputText value="#{usersController.selected.lastname}" title="#{bundle.ViewUsersTitle_lastname}"/></h1>
</div>
<br></br><br></br>
</h:form>
<h:form>
<h:commandButton action="#{chatbox.mmm()}" value="Send Message"/>
</h:form>
<br></br><br></br>
<p:panelGrid columns="2" style="float: left; margin-left: 150px;">
<h:outputText value="#{bundle.ViewUsersLabel_userid}"/>
<h:outputText value="#{usersController.selected.userid}" title="#{bundle.ViewUsersTitle_userid}"/>
<h:outputText value="#{bundle.ViewUsersLabel_username}"/>
<h:outputText value="#{usersController.selected.username}" title="#{bundle.ViewUsersTitle_username}"/>
<h:outputText value="#{bundle.ViewUsersLabel_password}"/>
<h:outputText value="#{usersController.selected.password}" title="#{bundle.ViewUsersTitle_password}"/>
<h:outputText value="#{bundle.ViewUsersLabel_email}"/>
<h:outputText value="#{usersController.selected.email}" title="#{bundle.ViewUsersTitle_email}"/>
<h:outputText value="#{bundle.ViewUsersLabel_lastname}"/>
<h:outputText value="#{usersController.selected.lastname}" title="#{bundle.ViewUsersTitle_lastname}"/>
<h:outputText value="#{bundle.ViewUsersLabel_firstname}"/>
<h:outputText value="#{usersController.selected.firstname}" title="#{bundle.ViewUsersTitle_firstname}"/>
<h:outputText value="#{bundle.ViewUsersLabel_dob}"/>
<h:outputText value="#{usersController.selected.dob}" title="#{bundle.ViewUsersTitle_dob}">
<f:convertDateTime pattern="MM/dd/yyyy HH:mm:ss" />
</h:outputText>
<h:outputText value="#{bundle.ViewUsersLabel_detailid}"/>
<h:outputText value="#{usersController.selected.detailid}" title="#{bundle.ViewUsersTitle_detailid}"/>
<h:outputText value="#{bundle.ViewUsersLabel_roleid}"/>
<h:outputText value="#{usersController.selected.roleid}" title="#{bundle.ViewUsersTitle_roleid}"/>
<h:outputText value="#{bundle.ViewUsersLabel_countryid}"/>
<h:outputText value="#{usersController.selected.countryid}" title="#{bundle.ViewUsersTitle_countryid}"/>
</p:panelGrid>
<p:panelGrid columns="2" style="float: right; margin-right: 150px;">
<h:outputText value="#{bundle.ViewUserdetailsLabel_detailid}"/>
<h:outputText value="#{usersController.ud.detailid}" title="#{bundle.ViewUserdetailsTitle_detailid}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_orientation}"/>
<h:outputText value="#{usersController.ud.orientation}" title="#{bundle.ViewUserdetailsTitle_orientation}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_ethnicity}"/>
<h:outputText value="#{usersController.ud.ethnicity}" title="#{bundle.ViewUserdetailsTitle_ethnicity}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_height}"/>
<h:outputText value="#{usersController.ud.height}" title="#{bundle.ViewUserdetailsTitle_height}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_weight}"/>
<h:outputText value="#{usersController.ud.weight}" title="#{bundle.ViewUserdetailsTitle_weight}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_smoking}"/>
<h:outputText value="#{usersController.ud.smoking}" title="#{bundle.ViewUserdetailsTitle_smoking}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_drinking}"/>
<h:outputText value="#{usersController.ud.drinking}" title="#{bundle.ViewUserdetailsTitle_drinking}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_drugs}"/>
<h:outputText value="#{usersController.ud.drugs}" title="#{bundle.ViewUserdetailsTitle_drugs}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_horoscope}"/>
<h:outputText value="#{usersController.ud.horoscope}" title="#{bundle.ViewUserdetailsTitle_horoscope}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_education}"/>
<h:outputText value="#{usersController.ud.education}" title="#{bundle.ViewUserdetailsTitle_education}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_languagespoken}"/>
<h:outputText value="#{usersController.ud.languagespoken}" title="#{bundle.ViewUserdetailsTitle_languagespoken}"/>
<h:outputText value="#{bundle.ViewUserdetailsLabel_gender}"/>
<h:outputText value="#{usersController.ud.gender}" title="#{bundle.ViewUserdetailsTitle_gender}"/>
</p:panelGrid>
</div>
</ui:insert>
</div>
<div id="bottom">
<ui:insert name="bottom">Bottom</ui:insert>
</div>
</h:body>
是否可以使用我的jsf中的java类？如果有，怎么样？ 提前致谢