我将应用程序迁移到Spring Boot,包括从XML迁移到Java配置。该应用程序使用Hazelcast,它确实有效。但是,我再也看不到JConsole中的Hazelcast MBean了。关于启用JMX,我唯一能找到的就是属性
properties.put("hazelcast.jmx", true);
但这没有用。这是迁移前的配置:
<hz:hazelcast id="hzInstance">
<hz:config>
<hz:group name="gsynth" password="gsynth"/>
<hz:properties>
<hz:property name="hazelcast.logging.type">slf4j</hz:property>
<hz:property name="hazelcast.jmx">true</hz:property>
<hz:property name="hazelcast.version.check.enabled">false</hz:property>
<hz:property name="hazelcast.icmp.enabled">true</hz:property>
<hz:property name="hazelcast.shutdownhook.enabled">true</hz:property>
<hz:property name="hazelcast.max.operation.timeout">60000</hz:property>
<hz:property name="hazelcast.restart.on.max.idle">true</hz:property>
</hz:properties>
<hz:network port="5701" port-auto-increment="false">
<hz:join>
<hz:multicast enabled="false"/>
<hz:tcp-ip enabled="true">
<hz:members>${members.list}</hz:members>
</hz:tcp-ip>
</hz:join>
</hz:network>
</hz:config>
</hz:hazelcast>
<hz:map id="serviceHash" instance-ref="hzInstance" name="service-hash"/>
<hz:map id="persisterHash" instance-ref="hzInstance" name="persister-hash"/>
现在它看起来像这样:
public class HazelcastConfig
{
@Bean
public HazelcastInstance hzInstance(Config hzConfig)
{
return Hazelcast.newHazelcastInstance(hzConfig);
}
@Bean
public Config hzConfig(@Value("${members.list}") String membersList)
{
Properties properties = new Properties();
properties.put("hazelcast.logging.type", "slf4j");
properties.put("hazelcast.jmx", true);
properties.put("hazelcast.version.check.enabled", false);
properties.put("hazelcast.icmp.enabled", true);
properties.put("hazelcast.shutdownhook.enabled", true);
properties.put("hazelcast.max.operation.timeout", 60000);
properties.put("hazelcast.restart.on.max.idle", true);
return new Config().setGroupConfig(new GroupConfig().setName("gsynth").setPassword("gsynth")).setProperties(
properties).setNetworkConfig(
new NetworkConfig().setPort(5701).setPortAutoIncrement(false).setJoin(
new JoinConfig().setMulticastConfig(new MulticastConfig().setEnabled(false)).setTcpIpConfig(
new TcpIpConfig().setEnabled(true).addMember(membersList))));
}
@Bean
public IMap serviceHash(HazelcastInstance hzInstance)
{
return hzInstance.getMap("service-hash");
}
@Bean
public IMap persisterHash(HazelcastInstance hzInstance)
{
return hzInstance.getMap("persister-hash");
}
}
感谢您的帮助!
答案 0 :(得分:0)
您能否通过将系统属性设置为
来确保您已启用JMX Agent-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=_portNo\_ (to specify JMX port, the default is 1099) (optional) -Dcom.sun.management.jmxremote.authenticate=false
然后你尝试更简单的设置,如下所示,以确保它是否有效,如果确实如此,那么检查程序中配置的构造。
Config config = new Config();
config.setProperty("hazelcast.jmx", "true");
HazelcastInstance hz = Hazelcast.newHazelcastInstance(config);
答案 1 :(得分:0)
最后,我发现了一个问题:问题是我正在使用这样的属性:
Properties properties = new Properties();
properties.put("hazelcast.logging.type", "slf4j");
properties.put("hazelcast.jmx", true);
...
所以true
被设置为布尔值。内部Hazelcast的源代码在第752行的文件GroupProperties.java
中变为空:
String configValue = (config != null) ? config.getProperty(name) : null;
如果你深入挖掘,你会看到config.getProperty(name)
将返回null,因为Properties.java
文件的第969行(如JDK 1.8.0_102中)这个奇特的东西:
Object oval = super.get(key);
String sval = (oval instanceof String) ? (String)oval : null;
在这种情况下, oval
对应于“hazelcast.jmx”键,因此为true
,但 BOOLEAN 不是字符串。< / p>
修复很简单:
Properties properties = new Properties();
properties.put("hazelcast.logging.type", "slf4j");
properties.put("hazelcast.jmx", "true");
...
只需将所有非字符串值设为字符串。
希望它有所帮助!