Merge remote-tracking branch 'origin/master'

pom.xml

@@ -103,6 +103,20 @@
 
     <build>
         <plugins>
+            <!--
+                添加 -release 参数，生成支持旧版本JDK的 jar 包, see:
+                https://www.baeldung.com/maven-java-version#java9
+            -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.10.1</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                    <release>8</release>
+                </configuration>
+            </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>