Merge pull request #102 from diguage/master

修正插件的声明

example/pom.xml

@@ -33,7 +33,9 @@
 		<plugins>
 			<!-- deploy模块的packaging通常是jar，如果项目中没有java 源代码或资源文件，加上这一段配置使项目能通过构建 -->
 			<plugin>
+                <groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-jar-plugin</artifactId>
+                <version>2.5</version>
 				<configuration>
 					<archive>
 						<addMavenDescriptor>true</addMavenDescriptor>

pom.xml

@@ -258,6 +258,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
+                <version>2.4</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>
@@ -270,6 +271,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
+                <version>3.2</version>
 				<configuration>
 					<source>${java_source_version}</source>
 					<target>${java_target_version}</target>
@@ -304,11 +306,6 @@
 				  </excludes>
 				</configuration>
 			</plugin>
-			<plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.5</version>
-            </plugin>
             <!-- javadoc -->
             <!--
             <plugin>