Springmvc 在maven添加依赖

    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-webmvc</artifactId>        <version>4.1.6.RELEASE</version>    </dependency>    <!-- https://mvnrepository.com/artifact/aopalliance/aopalliance -->    <dependency>        <groupId>aopalliance</groupId>        <artifactId>aopalliance</artifactId>        <version>1.0</version>    </dependency>    <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->    <dependency>        <groupId>commons-logging</groupId>        <artifactId>commons-logging</artifactId>        <version>1.2</version>    </dependency>    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-tx</artifactId>        <version>4.1.6.RELEASE</version>    </dependency>    <dependency>        <groupId>javax.servlet</groupId>        <artifactId>javax.servlet-api</artifactId>        <version>3.1-b05</version>    </dependency><!-- jackson start -->      <dependency>          <groupId>com.fasterxml.jackson.core</groupId>          <artifactId>jackson-core</artifactId>          <version>2.1.0</version>      </dependency>      <dependency>          <groupId>com.fasterxml.jackson.core</groupId>          <artifactId>jackson-databind</artifactId>          <version>2.1.0</version>      </dependency>      <dependency>          <groupId>com.fasterxml.jackson.core</groupId>          <artifactId>jackson-annotations</artifactId>          <version>2.1.0</version>      </dependency>      <!-- jackson end --> </dependencies>