개요

Java 어플리케이션을 배포하는 새로운 방식인 JNLP 를 테스트 해 보도록 한다.

테스트 프로그램

<DayTime.java>

package net.cranix.daytime.model;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;

public class DayTime {
    /**
     * DayTime 서버로부터 결과를 받아서 돌려주는 함수
     * @param server
     * @return
     * @throws IOException
     * @throws UnknownHostException
     */
    public String getRemoteTime(String server) throws UnknownHostException, IOException {
        StringBuffer sb = new StringBuffer();
        BufferedReader br = null;
        try {
            Socket sock = new Socket(server,13);
            br = new BufferedReader(new InputStreamReader(sock.getInputStream()));
            String line = null;
            while((line = br.readLine()) != null) {
                sb.append(line).append("\n");
            }
        }
        finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return sb.toString().trim();
    }

}

 

<MainFrame.java>

package net.cranix.daytime.view;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.UnknownHostException;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

import net.cranix.daytime.model.DayTime;

public class MainFrame extends JFrame {
    private JLabel label = null;
    private JButton closeBtn = null;
    private JButton reloadBtn = null;
    private DayTime model = null;
    public MainFrame(DayTime model) {
        super();
        this.model = model;
        init();
        updateTime();
    }
    public void updateTime() {
        try {
            label.setText(model.getRemoteTime("time.nist.gov"));
            pack();
        } catch (UnknownHostException e) {
            JOptionPane.showMessageDialog(this, e);
        } catch (IOException e) {
            JOptionPane.showMessageDialog(this, e);
        }
    }
    public void init() {
        // 이벤트 처리
        label = new JLabel("TimeLabel");
        reloadBtn = new JButton("Reload");
        reloadBtn.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                updateTime();
            }
        });
        closeBtn = new JButton("Close");
        closeBtn.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent arg0) {
                dispose();
            }
        });
        // 컴포넌트 배치
        JPanel btnPanel = new JPanel();
        btnPanel.add(reloadBtn,BorderLayout.EAST);
        btnPanel.add(closeBtn,BorderLayout.WEST);
        getContentPane().add(label,BorderLayout.CENTER);
        getContentPane().add(btnPanel,BorderLayout.SOUTH);
        // 프레임 설정
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setTitle("DayTime");
        setResizable(false);
    }
}

 

<Main.java>

package net.cranix.daytime;

import net.cranix.daytime.model.DayTime;
import net.cranix.daytime.view.MainFrame;

public class Main {
    public Main() {
        DayTime model = new DayTime();
        MainFrame view = new MainFrame(model);
        view.setVisible(true);

    }
    public static void main(String args[]) {
        new Main();
    }
}

 

JNLP XML 설정

<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="file:///E:/cranix/workspace/DayTime">
    <information>
        <title>DayTime</title>
        <vendor>cranix</vendor>
        <homepage href="http://cranix.net" />
        <description>demo daytime</description>
        <offline-allowed/>
    </information>
    <security>
        <all-permissions/>
    </security>
    <resources>
        <j2se version="1.2+" />
        <jar href="DayTime.jar"/>
    </resources>
    <application-desc main-class="net.cranix.daytime.Main" />
</jnlp>

jar 파일 서명하기

keytool –genkey –keystore cranixKeystore –alias cranix

keytool –selfcert –alias cranix –keystore cranixKeystore

keytool –list –keystore cranixKeystore

jarsigner –keystore cranixKeystore DayTime.jar cranix

실행하기

생성한 jnlp 파일을 더블클릭