我正在尝试将 Java 应用程序的自定义值指标导出到 Prometheus。我读到可以使用 Push Gateway 来完成，下面是我使用下一个方法的示例：
static void executeBatchJob() throws Exception {
CollectorRegistry registry = new CollectorRegistry();
Gauge duration = Gauge.build()
.name("my_batch_job_duration_seconds").help("Duration of my batch job in seconds.").register(registry);
Gauge.Timer durationTimer = duration.startTimer();
try {
// Your code here.
myCode();
// This is only added to the registry after success,
// so that a previous success in the Pushgateway isn't overwritten on failure.
Gauge lastSuccess = Gauge.build()
.name("my_batch_job_last_success").help("Last time my batch job succeeded, in unixtime.").register(registry);
lastSuccess.setToCurrentTime();
} finally {
durationTimer.setDuration();
PushGateway pg = new PushGateway("172.16.124.40:9091");
pg.pushAdd(registry, "my_batch_job");
}
}
但是当我运行该项目时，我遇到了下一个错误：Exception in thread "main" java.lang.NoClassDefFoundError: io/prometheus/client/exporter/common/TextFormat
at io.prometheus.client.exporter.PushGateway.doRequest(PushGateway.java:299)
at io.prometheus.client.exporter.PushGateway.pushAdd(PushGateway.java:158)
at nemshelloworld.NemsHelloWorld.executeBatchJob2(NemsHelloWorld.java:78)
at nemshelloworld.NemsHelloWorld.main(NemsHelloWorld.java:33)
Caused by: java.lang.ClassNotFoundException: io.prometheus.client.exporter.common.TextFormat
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
你错过了simpleclient_common模块，它是列出的依赖项simpleclient_pushgateway所以听起来你的 pom.xml 或等效内容不正确。
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