add metrics

Author: linux-china

pom.xml

@@ -36,6 +36,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-actuator</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.dropwizard.metrics</groupId>
+            <artifactId>metrics-core</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-devtools</artifactId>
@@ -66,7 +70,7 @@
             <dependency>
                 <groupId>io.spring.platform</groupId>
                 <artifactId>platform-bom</artifactId>
-                <version>1.1.4.RELEASE</version>
+                <version>2.0.0.RELEASE</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
@@ -75,6 +79,14 @@
 
     <build>
         <plugins>
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.3</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>