Maven dependency spring-web vs spring-webmvc

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>3.1.2.RELEASE</version>
 </dependency>
vs

<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>3.1.2.RELEASE</version>
 </dependency>

spring-web provides core HTTP integration, including some handy servlet filters, Spring HTTP Invoker, infrastructure to integrate with other web frameworks and HTTP technologies (Hessian, Burlap)
VS
spring-webmvc is an implementation of Spring MVC. spring-webvc depends on on spring-web, thus including it will transitively add spring-web. You don't have to add spring-web explicitly.