Spring_配置WebMvcConfigurerAdapter出错

　　在使用Java配置SpringMVC时出错：The type org.springframework.http.converter.HttpMessageConverter cannot be resolved. It is indirectly referenced from required .class files。

　　问题原因：缺少必要的jar包

　　解决方案：在pom中导入如下配置　

<!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>4.1.1.RELEASE</version>
    </dependency>