修复编译级别

pom.xml

@@ -23,6 +23,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <compiler.version>1.8</compiler.version>
     </properties>
 
     <dependencies>
@@ -45,8 +46,8 @@
             <plugin>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>1.7</source>
-                    <target>1.7</target>
+                    <source>${compiler.version}</source>
+                    <target>${compiler.version}</target>
                     <encoding>${project.build.sourceEncoding}</encoding>
                 </configuration>
             </plugin>

skywalking-commons/pom.xml

@@ -21,20 +21,6 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <compiler.version>1.6</compiler.version>
     </properties>
-
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.6.0</version>
-                <configuration>
-                    <source>1.6</source>
-                    <target>1.6</target>
-                    <encoding>${project.build.sourceEncoding}</encoding>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
 </project>