恢复被删掉的gpg和javadoc配置。

pom.xml

@@ -329,8 +329,6 @@
 		</dependencies>
 	</dependencyManagement>
 
-
-
 	<build>
 		<plugins>
 			<plugin>
@@ -374,6 +372,35 @@
 				<artifactId>maven-site-plugin</artifactId>
 				<version>3.7.1</version>
 			</plugin>
+			<!-- Javadoc -->
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-javadoc-plugin</artifactId>
+				<version>3.0.1</version>
+				<executions>
+					<execution>
+						<phase>package</phase>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<!-- Gpg Signature -->
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-gpg-plugin</artifactId>
+				<version>1.6</version>
+				<executions>
+					<execution>
+						<id>sign-artifacts</id>
+						<phase>verify</phase>
+						<goals>
+							<goal>sign</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
 
 			<!-- version number -->
 			<plugin>