新增springboot集成prometheus项目

springboot-prometheus/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>1.0.0</groupId>
+  <artifactId>springboot-prometheus</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+  <packaging>jar</packaging>
+
+  <name>springboot-prometheus</name>
+  <url>http://maven.apache.org</url>
+
+<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+		<java.version>1.8</java.version>
+		<maven.compiler.source>1.8</maven.compiler.source>
+		<maven.compiler.target>1.8</maven.compiler.target>
+	</properties>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.1.3.RELEASE</version>
+		<relativePath/>
+	</parent>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+		<dependency>
+   			 <groupId>io.micrometer</groupId>
+   			 <artifactId>micrometer-registry-prometheus</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	     <dependency>
+	        <groupId>org.springframework.boot</groupId>
+	        <artifactId>spring-boot-devtools</artifactId>
+	        <optional>true</optional>
+	        <scope>test</scope>
+		</dependency>
+	</dependencies>
+	<build>
+		<defaultGoal>compile</defaultGoal>
+		<sourceDirectory>src</sourceDirectory>
+		<finalName>springboot-prometheus</finalName>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin </artifactId>
+				<configuration>
+					<fork>true</fork>
+					<mainClass>com.pancm.App</mainClass>
+				</configuration>
+				<executions>
+					<execution>
+						<goals>
+							<goal>repackage</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

springboot-prometheus/src/main/java/com/pancm/ActuatorApp.java

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+package com.pancm;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+
+/**
+ * 
+* @Title: ActuatorApp
+* @Description: 
+启动程序之后，在浏览器输入: http://localhost:8284/actuator 加上
+ 1. /autoconfig   可以得到配置生效信息
+ 2. /configprops  可以得到属性的内容和默认值
+ 3. /beans   	     可 以得到bean的别名、类型、是否单例、类的地址、依赖等信息
+ 4. /dump         可 以得到线程名、线程ID、线程的状态、是否等待锁资源等信息
+ 5. /env          可以得到环境变量、JVM 属性、命令行参数、项目使用的jar包等信息
+ 	5.1 /sun.boot.library.path   可以得到JDK安装路径
+ 6. /health       可以得到磁盘检测和数据库检测等信息
+ 7. /mappings     可以得到全部的URI路径，以及它们和控制器的映射关系
+ 8. /metrics      可以得到JVM内容使用、GC情况、类加载信息
+    8.1 /gc.*     可以得到GC相关信息
+    8.2 /mem.*	     可以得到内存信息
+    ... 
+ 9. /info         可以得到自定义的配置信息
+ 10. /shutdown    可以进行关闭程序  post请求
+ 11. /trace       可以得到所Web请求的详细信息
+ 12./prometheus  可以通过Prometheus查看信息
+   
+ 
+* @Version:1.0.0  
+* @author pancm
+* @date 2019年1月17日
+ */
+@SpringBootApplication
+public class ActuatorApp 
+{
+    public static void main( String[] args )
+    {
+		SpringApplication.run(ActuatorApp.class, args);
+		System.out.println("Actuator启动成功！");
+    }
+}

springboot-prometheus/src/main/java/com/pancm/config/GlobalExceptionHandler.java

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+package com.pancm.config;
+
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import javax.annotation.Resource;
+
+/**
+ * @Author pancm
+ * @Description 全局异常捕获
+ * @Date  2020/8/18
+ * @Param
+ * @return
+ **/
+@ControllerAdvice
+public class GlobalExceptionHandler {
+
+    @Resource
+    private PrometheusCustomMonitor monitor;
+
+    @ResponseBody
+    @ExceptionHandler(value = Exception.class)
+    public String handle(Exception e) {
+        monitor.getRequestErrorCount().increment();
+        return "error, count:"+monitor.getRequestErrorCount().count()+" message: " + e.getMessage();
+    }
+}

springboot-prometheus/src/main/java/com/pancm/config/PrometheusCustomMonitor.java

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+package com.pancm.config;
+
+import io.micrometer.core.instrument.Counter;
+import io.micrometer.core.instrument.DistributionSummary;
+import io.micrometer.core.instrument.MeterRegistry;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.PostConstruct;
+
+
+/**
+ * @Author pancm
+ * @Description
+ * @Date  2020/8/18
+ * @Param
+ * @return
+ **/
+@Component
+public class PrometheusCustomMonitor {
+
+    /**
+     * 记录请求出错次数
+     */
+    private Counter requestErrorCount;
+    private final MeterRegistry registry;
+    @Autowired
+    public PrometheusCustomMonitor(MeterRegistry registry) {
+        this.registry = registry;
+    }
+    @PostConstruct
+    private void init() {
+        requestErrorCount = registry.counter("requests_error_total", "status", "error");
+    }
+    public Counter getRequestErrorCount() {
+        return requestErrorCount;
+    }
+
+
+}

springboot-prometheus/src/main/java/com/pancm/web/HelloWorldController.java

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+package com.pancm.web;
+
+import com.pancm.config.PrometheusCustomMonitor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.util.StringUtils;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class HelloWorldController {
+
+	@Autowired
+	PrometheusCustomMonitor prometheusCustomMonitor;
+
+
+	@RequestMapping("/hello/{name}")
+	public String index(@PathVariable String name) throws Exception {
+		if(!"pancm".equals(name)){
+			throw new Exception("出错了");
+		}
+		return "Hello " + name;
+	}
+
+}

springboot-prometheus/src/main/java/com/pancm/web/package-info.java

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+/**
+* @Title: package-info
+* @Description: 
+* @Version:1.0.0  
+* @author pancm
+* @date 2019年1月17日
+*/
+package com.pancm.web;

springboot-prometheus/src/main/resources/application.properties

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+spring.port = 8284
+spring.application.name=@project.name@
+# /health端点 暴露详细信息
+management.endpoint.health.show-details=always
+# "*" 代表暴露所有的端点 如果指定多个端点，用","分开
+management.endpoints.web.exposure.include=*
+# 赋值规则同上
+management.endpoints.web.exposure.exclude=
+# 正式应用 慎重启用
+management.endpoint.shutdown.enabled=true
+# 为指标设置一个名为的Tag，Tag是Prometheus提供的一种能力，从而实现更加灵活的筛选。
+management.metrics.tags.application=${spring.application.name}
+
+info.app.encoding=@project.build.sourceEncoding@
+info.app.java.source=@java.version@
+info.app.java.target=@java.version@
+info.app.name=@project.name@
+info.app.description=@project.description@
+info.app.version=@project.version@