Question

是否可以在Glassfish v2中获取当前域的名称？

我有一个代码：

    MemoryMXBean bean = ManagementFactory.getMemoryMXBean();
    if (bean != null) {
        MemoryUsage usage = bean.getNonHeapMemoryUsage();
        int current = (int) ((double) usage.getUsed() / usage.getMax() * 100);
        ch.log( Level.INFO, "Memory usage : (non heap) " + usage + " -- "+current+"% (limit:"+THRESHOLD+"%)");
        if (current > THRESHOLD) {
            //send email
        }

当appserver即将崩溃时会向我们发送一封电子邮件（PermGen空间异常）;但我们有3个appserver运行，所以域名真的很有用......任何想法？

由于

Answer 1

您可以使用AMX获取域名。它可以从DomainRoot。getAppserverDomainName（）。

获得

Answer 2

这不是最美丽的解决方案，但这个黑客有效：

String dirName = (new File( ".." )).getCanonicalPath();
int dirNameIdx = dirName.lastIndexOf( File.separator );
if (dirNameIdx != -1) 
    APPSERVER = dirName.substring( dirNameIdx + 1 );
    ch.log( Level.INFO, "Memory usage: Appserver name: " + APPSERVER );
}

如果工作目录是...... / domains / domain / config

Answer 3

你可以这样做：

MBeanServerConnection serv;
if (hostname != null) {
    //remote connection
    JMXServiceURL u = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://" + hostname + "/jmxrmi");
    String[] credentials = new String[]{"admin", "adminadmin"};
    Map<String, String[]> environment = new LinkedHashMap<String, String[]>();
    environment.put("jmx.remote.credentials", credentials);

    JMXConnector c = JMXConnectorFactory.connect(u, environment);
    serv = c.getMBeanServerConnection();
} else {
    //local connection
    serv = ManagementFactory.getPlatformMBeanServer();
}

//connect to AMX
DomainRoot dRoot = ProxyFactory.getInstance(serv).getDomainRoot(true) ;

//get the Administrative domain name in the Domain Configuration
Map<String, String> map = dRoot.getDomainConfig().getProperties() ;
System.out.println(map.get("administrative.domain.name"));

hostname等于"host:port"，如果要连接本地JVM，则为null

Answer 4

基于Kevin的回答，如果你只是想在J2Emmain mbean上使用getPropertyValue方法来使用JMX（不依赖于AMX库）。

MBeanServerConnection serv;

//remote connection
JMXServiceURL u = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://" + hostname + "/jmxrmi");
String[] credentials = new String[]{"admin", "adminadmin"};
Map<String, String[]> environment = new LinkedHashMap<String, String[]>();
environment.put("jmx.remote.credentials", credentials);

JMXConnector c = JMXConnectorFactory.connect(u, environment);
serv = c.getMBeanServerConnection();
String domainName = (String) mbsc.invoke(new ObjectName("com.sun.appserv:j2eeType=J2EEDomain,name=com.sun.appserv,category=runtime"), "getPropertyValue", new String[] {"administrative.domain.name"}, new Object[] {"java.lang.String"});

Answer 5

这是我们一直在使用的一种非常简单的方式

db.getHISTORICAL_MEMORY_USAGE().setDOMAIN( System.getProperty( "domain.name" ) );
db.getHISTORICAL_MEMORY_USAGE().setSERVER( System.getProperty( "com.sun.aas.hostName" ) );

获取Glassfish2域的名称

5 个答案: