Upgrade dependencies.

weixin4j-serverX/pom.xml

@@ -12,9 +12,6 @@
 	<name>weixin4j-serverX</name>
 	<url>https://github.com/foxinmy/weixin4j/tree/master/weixin4j-serverX</url>
 	<description>微信消息接入服务(spring mvc实现)</description>
-	<properties>
-		<spring.version>4.2.0.RELEASE</spring.version>
-	</properties>
 	<dependencies>
 		<dependency>
 			<groupId>junit</groupId>
@@ -23,13 +20,11 @@
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-webmvc</artifactId>
-			<version>${spring.version}</version>
 		</dependency>
 		<!-- 兼容 JDK 9+ 后的maven环境编译 -->
 		<dependency>
 			<groupId>javax.xml.bind</groupId>
 			<artifactId>jaxb-api</artifactId>
-			<version>2.2.11</version>
 			<scope>provided</scope>
 		</dependency>
 		<dependency>
@@ -47,7 +42,6 @@
 			<groupId>javax.servlet.jsp</groupId>
 			<artifactId>jsp-api</artifactId>
 			<scope>provided</scope>
-			<version>2.1</version>
 		</dependency>
 	</dependencies>
 	<developers>