通过编程卸载应用程序
您可以通过管理控制台、wsadmin 工具或编程来卸载应用程序。使用此示例,通过编程来卸载应用程序。
开始之前
此任务假设您对 MBean 编程有基本的了解。有关 MBean 编程的信息,请参阅 MBean Java™ 应用程序编程接口 (API) 文档。 在此信息中心中,单击 。
您必须首先在 WebSphere® Application Server 上安装了应用程序,才能卸载该应用程序。
关于此任务
执行以下各项任务,从而通过编程卸载应用程序。
过程
- 获取与 WebSphere Application Server 的连接。
- 获取应用程序管理代理。
- 创建用于侦听卸载事件的通知过滤器。
- 添加侦听器。
- 卸载应用程序。
- 如果超时请等待,以使程序不会结束。
- 侦听 Java 管理扩展 (JMX) 通知,以了解操作的完成情况。
- 当卸载完成时,请移除侦听器,然后退出。
结果
成功运行代码之后,就卸载了应用程序。
示例
以下示例显示如何根据上述步骤卸载应用程序。为了便于打印,某些语句被拆分为几行。
import java.lang.*;
import java.io.*;
import java.util.*;
import java.lang.reflect.*;
import com.ibm.websphere.management.application.*;
import com.ibm.websphere.management.application.client.*;
import com.ibm.websphere.management.*;
import javax.management.*;
public class Uninstall {
public static void main (String [] args) {
try {
// Get a connection to the server.
String host = "localhost";
String port = "8880";
String target = "WebSphere:cell=cellName,node=nodeName,server=server1";
Properties config = new Properties();
config.put (AdminClient.CONNECTOR_HOST, host);
config.put (AdminClient.CONNECTOR_PORT, port);
config.put (AdminClient.CONNECTOR_TYPE, AdminClient.CONNECTOR_TYPE_SOAP);
System.out.println ("Config: " + config);
AdminClient _soapClient = AdminClientFactory.createAdminClient(config);
// Get the application management proxy.
AppManagement proxy = AppManagementProxy. getJMXProxyForClient (_soapClient);
String appName = "MyApp";
Hashtable options = new Hashtable();
options.put (AppConstants.APPDEPL_LOCALE, Locale.getDefault());
//Create the notification filter.
NotificationFilterSupport myFilter = new NotificationFilterSupport();
myFilter.enableType (AppConstants.NotificationType);
//Add the listener.
NotificationListener listener = new AListener(_soapClient,
myFilter, "Install: " + appName, AppNotification.UNINSTALL);
// Uninstall the application.
proxy.uninstallApplication (appName, options, null);
System.out.println ("After uninstall App is called..");
// Wait for some timeout. The installation application programming interface (API) is
// asynchronous and so returns immediately.
// If the program does not wait here, the program ends.
Thread.sleep(300000); // Wait so that the program does not end.
}
catch (Exception e) {
e.printStackTrace();
}
}
}
// Specify the Java Management Extensions (JMX) notification listener for JMX events.
class AListener implements NotificationListener
{
AdminClient _soapClient;
NotificationFilterSupport myFilter;
Object handback;
ObjectName on;
String eventTypeToCheck;
public AListener(AdminClient cl, NotificationFilterSupport fl,
Object h, String eType) throws Exception
{
_soapClient = cl;
myFilter = fl;
handback = h;
eventTypeToCheck = eType;
Iterator iter = _soapClient.queryNames (new ObjectName(
"WebSphere:type=AppManagement,*"), null).iterator();
on = (ObjectName)iter.next();
System.out.println ("ObjectName: " + on);
_soapClient.addNotificationListener (on, this, myFilter, handback);
}
public void handleNotification (Notification notf, Object handback)
{
AppNotification ev = (AppNotification) notf.getUserData();
System.out.println ("!! JMX event Recd: (handback obj= " + handback+ "): " + ev);
//When the unistallation is done, remove the listener and quit
if (ev.taskName.equals (eventTypeToCheck) &&
(ev.taskStatus.equals (AppNotification.STATUS_COMPLETED) ||
ev.taskStatus.equals (AppNotification.STATUS_FAILED)))
{
try
{
_soapClient.removeNotificationListener (on, this);
}
catch (Throwable th)
{
System.out.println ("Error removing listener: " + th);
}
System.exit (0);
}
}
}