写一个Jolokia的例子
时间: 2024-03-11 21:50:52 浏览: 26
下面是一个使用Jolokia协议访问远程JMX MBeans的例子:
```java
import org.jolokia.client.J4pClient;
import org.jolokia.client.J4pClientBuilder;
import org.jolokia.client.exception.J4pException;
import org.jolokia.client.request.J4pReadRequest;
import org.jolokia.client.request.J4pReadResponse;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import java.util.HashMap;
import java.util.Map;
public class JolokiaExample {
public static void main(String[] args) throws MalformedObjectNameException, J4pException {
// 创建Jolokia客户端
J4pClient j4pClient = new J4pClientBuilder()
.url("http://localhost:8080/jolokia") // 指定Jolokia代理的URL
.build();
// 创建JMX对象名称
ObjectName objectName = new ObjectName("java.lang:type=Memory");
// 创建JMX读取请求
J4pReadRequest j4pReadRequest = new J4pReadRequest(objectName, "HeapMemoryUsage");
// 发送JMX读取请求
J4pReadResponse j4pReadResponse = j4pClient.execute(j4pReadRequest);
// 获取JMX读取响应
Map<String, Long> heapMemoryUsage = new HashMap<String, Long>();
heapMemoryUsage.put("used", j4pReadResponse.getValue("used"));
heapMemoryUsage.put("committed", j4pReadResponse.getValue("committed"));
heapMemoryUsage.put("max", j4pReadResponse.getValue("max"));
// 输出JMX读取响应
System.out.println("Heap Memory Usage: " + heapMemoryUsage);
}
}
```
这个例子使用Jolokia客户端来访问远程JMX MBeans。它首先创建Jolokia客户端,然后使用JMX对象名称创建JMX读取请求。然后,它发送JMX读取请求,并获取JMX读取响应。最后,它输出JMX读取响应,显示堆内存使用情况。
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