How to implement custom data monitoring with Java combined with Prometheus

...

- job_name: 'my-service'
  metrics_path: /metrics
  static_configs:
  - targets: [':yyyy'] //The url of the monitored application
...

<!-- prometheus -->
<dependency>
		<groupId></groupId>
		<artifactId>simpleclient</artifactId>
		<version>0.3.0</version>
</dependency>
<dependency>
		<groupId></groupId>
		<artifactId>simpleclient_hotspot</artifactId>
		<version>0.3.0</version>
</dependency>
<dependency>
		<groupId></groupId>
		<artifactId>simpleclient_servlet</artifactId>
		<version>0.3.0</version>
</dependency>

import ;
import ;
import ;
...

@Configuration
public class PrometheusConfig {

		// ...

		@Bean
		public ServletRegistrationBean servletRegistrationBean(){
			();
			return new ServletRegistrationBean(new MetricsServlet(), "/metrics");
		}
}

import ;
import ;
...

// counter only increases but not decreasesstatic final Counter customizeCounter = ()
        .name("customize_counter") //Define the name, the name can be used for search        .help("customize counter") //Definition description        .register();
(); //Add 1 in the current object
// gauge can be increased or decreasedstatic final Gauge customizeGauge = ()
        .name("customize_gauge")
        .help("customize gauge")
        .labelNames("label1", "label2", "label3") //Define the tag name, you can define multiple tags        .register();
(); //Add 1 in the current object(); //The current object is reduced by 1("value1","value2","value3").set(1100); //Set the tag value, the tag can be used for conditional filtering
// In addition,histogramandsummaryTwo indicators

<!-- prometheus -->
<dependency>
		<groupId></groupId>
		<artifactId>simpleclient</artifactId>
		<version>0.3.0</version>
</dependency>
<dependency>
		<groupId></groupId>
		<artifactId>simpleclient_hotspot</artifactId>
		<version>0.3.0</version>
</dependency>
<dependency>
		<groupId></groupId>
		<artifactId>simpleclient_servlet</artifactId>
		<version>0.3.0</version>
</dependency>

String query = "customize_counter";
String url = "http://[ip]:[port]/api/v1/query?query=" + query + "&time=2019-05-01T20:10:51.781Z";
HttpGet get = new HttpGet(url);
CloseableHttpClient httpClient = ().build();
CloseableHttpResponse response = (get);

String query = "rate(customize_counter{label1 = value1}[30s])";
String url = "http://[ip]:[port]/api/v1/query_range?query=" + query + "&start=2019-05-01T20:10:51.781Z&end=2019-05-02T20:10:51.781Z";
HttpGet get = new HttpGet(url);
CloseableHttpClient httpClient = ().build();
CloseableHttpResponse response = (get);

public class ComparatorPromData implements Comparator {

    @Override
    public int compare(Object o1, Object o2) {
        List list1 = (List)o1;
        List list2 = (List)o2;
        return ((Integer) (0)).compareTo(((Integer) (0)));
    }
}

public class SortUtil {

    public static List sortPromData(List<List> list) {
        ComparatorPromData comparator = new ComparatorPromData();
        (list, comparator);
        return list;
    }
}