Merge pull request #21 from xiaohongxiedaima/add-protoSourceRoot

add protoSourceRoot config for protobuf-maven-plugin, optimize polaris-protobuf/pom.xml code comments

Author: andrewshan

polaris-common/polaris-protobuf/pom.xml

@@ -29,7 +29,10 @@
     </dependencies>
 
     <build>
-        <!--这个是为了下载下面的工具用的，他可以提供一些变量，os.detected.classifier变量可以根据当前系统的类型来下载对应的工具-->
+        <!--
+        generates various useful platform-dependent project properties,
+        eg: generates os.detected.classifier for protobuf-maven-plugin
+        -->
         <extensions>
             <extension>
                 <groupId>kr.motd.maven</groupId>
@@ -38,11 +41,11 @@
             </extension>
         </extensions>
         <plugins>
+            <!-- protobuf compile plugin -->
             <plugin>
                 <groupId>org.xolstice.maven.plugins</groupId>
                 <artifactId>protobuf-maven-plugin</artifactId>
                 <version>0.6.1</version>
-                <!--添加.proto文件的编译工具-->
                 <configuration>
                     <protocArtifact>
                         com.google.protobuf:protoc:3.12.0:exe:${os.detected.classifier}
@@ -51,11 +54,10 @@
                     <pluginArtifact>
                         io.grpc:protoc-gen-grpc-java:1.38.0:exe:${os.detected.classifier}
                     </pluginArtifact>
-                    <!--这是生成grpc工具类存放的文件夹的名字-->
-                    <pluginId>grpc-java</pluginId>
+                    <!--The source directories containing the .proto definitions to be compiled. -->
+                    <protoSourceRoot>${basedir}/src/main/proto</protoSourceRoot>
                 </configuration>
                 <executions>
-                    <!--这是上面两个编译工具用到的命令-->
                     <execution>
                         <goals>
                             <goal>compile</goal>