我想监控一些应用程序,我正在使用Prometheus。它在某些应用程序中运行良好,但当我尝试在另一个应用程序中实现它时,我遇到了一些问题。 它说:
构造函数ServletRegistrationBean(MetricsServlet,String)未定义
导致此问题的原因以及如何解决此问题。
这是我的班级。
import java.util.Collection;
import org.springframework.boot.actuate.endpoint.PublicMetrics;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import io.prometheus.client.exporter.MetricsServlet;
import io.prometheus.client.hotspot.DefaultExports;
import io.prometheus.client.spring.boot.SpringBootMetricsCollector;
@Configuration
public class MonitoringConfig {
@Bean
SpringBootMetricsCollector springBootMetricsCollector(Collection<PublicMetrics> publicMetrics) {
SpringBootMetricsCollector springBootMetricsCollector = new SpringBootMetricsCollector(publicMetrics);
springBootMetricsCollector.register();
return springBootMetricsCollector;
}
@Bean
public ServletRegistrationBean servletRegistrationBean() {
DefaultExports.initialize();
return new ServletRegistrationBean(new MetricsServlet(), "/prometheus");
}
}
依赖条件:
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-actuator -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-actuator</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/com.moelholm/prometheus-spring-boot-starter -->
<dependency>
<groupId>com.moelholm</groupId>
<artifactId>prometheus-spring-boot-starter</artifactId>
<version>1.0.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.prometheus/simpleclient -->
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient</artifactId>
<version>0.0.25</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.prometheus/simpleclient_hotspot -->
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient_hotspot</artifactId>
<version>0.0.25</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.prometheus/simpleclient_spring_boot -->
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient_spring_boot</artifactId>
<version>0.0.25</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.prometheus/simpleclient_servlet -->
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient_servlet</artifactId>
<version>0.0.25</version>
</dependency>
在某些应用程序中它可以正常工作,但在其中一个堆叠着:
构造函数ServletRegistrationBean(MetricsServlet,String)未定义
答案 0 :(得分:1)
MetricsServlet 应该实现 javax.servlet.Servlet 。确保项目/类路径中有该类(即 javax.servlet.Servlet )。 包含此类的库的maven依赖项是:
<!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>