---
category: swing
folder: SingleInstanceService
title: SingleInstanceServiceを使って Web Start アプリケーションの重複起動を禁止
tags: [SingleInstanceService, ServiceManager, SingleInstance]
author: aterai
pubdate: 2008-02-25T02:06:56+09:00
description: SingleInstanceServiceを使って、Web Startアプリケーションの重複起動を禁止したり、引数の取得を行います。
image: https://lh5.googleusercontent.com/_9Z4BYR88imo/TQTTIU5TktI/AAAAAAAAAj4/muKNMFrhEcE/s800/SingleInstanceService.png
---
* Summary [#summary]
`SingleInstanceService`を使って、`Web Start`アプリケーションの重複起動を禁止したり、引数の取得を行います。
#download(https://lh5.googleusercontent.com/_9Z4BYR88imo/TQTTIU5TktI/AAAAAAAAAj4/muKNMFrhEcE/s800/SingleInstanceService.png)
* Source Code Examples [#sourcecode]
#code(link){{
JFrame frame = new JFrame("@title@");
try {
SingleInstanceService sis =
(SingleInstanceService) ServiceManager.lookup("javax.jnlp.SingleInstanceService");
sis.addSingleInstanceListener(new SingleInstanceListener() {
private int count = 0;
@Override public void newActivation(String[] args) {
// System.out.println(EventQueue.isDispatchThread());
EventQueue.invokeLater(new Runnable() {
@Override public void run() {
JOptionPane.showMessageDialog(frame, "");
frame.setTitle("title:" + count);
count++;
}
});
}
});
} catch (UnavailableServiceException use) {
use.printStackTrace();
return;
}
}}
* Description [#explanation]
* Description [#description]
`Web Start`アプリケーションの場合、`javax.jnlp.SingleInstanceService`に`SingleInstanceListener`を追加することで、新しい次のインスタンスの起動やその時の引数取得などが可能になります。
// - %%メモ: `JDK 1.6.0_03`では`SingleInstanceService`は正常に動作しない%% `JDK 1.6.0_10`で修正済み
- コンパイルに`javaws.jar`が必要なので以下のようなクラスパスを設定
set CLASSPATH=%JAVA_HOME%/jre/lib/javaws.jar
- または`build.xml`などに記入
#code{{
<path id="project.class.path">
<pathelement location="${build.dest}" />
<pathelement location="${java.home}/lib/javaws.jar" />
<pathelement path="${java.class.path}" />
</path>
}}
-- [http://javahowto.blogspot.com/2006/05/javahome-vs-javahome.html Java How To ...: JAVA_HOME vs java.home]
* Reference [#reference]
- [https://docs.oracle.com/javase/jp/8/docs/jre/api/javaws/jnlp/javax/jnlp/SingleInstanceService.html SingleInstanceService (JNLP API Reference 1.8.0_71)]
- [https://bugs.openjdk.org/browse/JDK-6631056 Bug ID: 6631056 SingleInstanceService does not work on JRE 1.6.0_03]
-- via: [https://community.oracle.com/thread/1307009 Java Web Start & JNLP - How to use singleinstance service with a JWS application]
- [https://appframework.dev.java.net/servlets/ReadMsg?listName=users&msgNo=396 Java Web Start SingleInstanceService - appframework(JSR-296)]
- [[ServerSocketを使ってアプリケーションの複数起動を禁止>Swing/SingleInstanceApplication]]
* Comment [#comment]
#comment
#comment