通过编程更新应用程序

您可以通过管理控制台、wsadmin 工具或编程来更新现有的应用程序。使用此示例,通过编程完全更新应用程序。

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,单击引用 > MBean 接口

您必须首先在 WebSphere® Application Server 上安装了应用程序,才能更新该应用程序。

关于此任务

执行下列任务以通过编程完全更新应用程序。

过程

  1. 连接到 WebSphere Application Server
  2. 创建应用程序管理代理。
  3. 创建用于侦听事件的通知过滤器。
  4. 添加侦听器。
  5. 准备企业归档 (EAR) 文件(用绑定信息来填充它)。
  6. 更新应用程序。
  7. 如果超时请等待,以使程序不会结束。
  8. 侦听 Java 管理扩展 (JMX) 通知,以了解操作的完成情况。
  9. 更新应用程序后,请移除侦听器,然后退出。

结果

成功运行代码之后,就更新了应用程序。

示例

以下示例显示如何根据先前步骤更新应用程序。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 aa {

    public static void main (String [] args) {

        try {
             
  // Connect to WebSphere Application 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);
  
  // Create the application management proxy, AppManagement.
  AppManagement proxy = AppManagementProxy.getJMXProxyForClient (_soapClient);

  String appName = "MyApp";  
[Windows]
String fileContents = "C:\test\test.ear";
[Linux][HP-UX][Solaris][AIX][z/OS][IBM i]
String fileContents = "/test/test.ear";
  // Create the notification filter.
  NotificationFilterSupport myFilter = new NotificationFilterSupport();
  myFilter.enableType (NotificationConstants.TYPE_APPMANAGEMENT);
  //Add the listener.
  NotificationListener listener = new AListener(_soapClient, myFilter, 
"Install: " + appName, AppNotification.INSTALL);

// Refer to the installation example to see how you can prepare the enterprise archive (EAR)
// file by populating it with binding information.
// If code for the preparation phase has started, then you already have the options table.
// If not, create a new table and add the module-to-server relationship to it by uncommenting
// the next statement.
//Hashtable options = new Hashtable();
  options.put (AppConstants.APPDEPL_LOCALE, Locale.getDefault());
  options.put ((AppConstants.APPUPDATE_CONTENTTYPE, AppConstants.APPUPDATE_CONTENT_APP); 

// Uncomment the following statements to add the module to the server relationship table if 
//  the preparation phase does not collect it
//Hashtable module2server = new Hashtable();
//module2server.put ("*", target);
//options.put (AppConstants.APPDEPL_MODULE_TO_SERVER, module2server);
// Update the application.
  proxy.updateApplication (appName,
                 null,
                 fileContents,
                 AppConstants.APPUPDATE_UPDATE,
                 options,
                 null);

// 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 installation 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);
        }
    }
}

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