我正在尝试在没有调度程序xml和web xml的情况下（即完全没有任何xml）设置Spring MVC项目。因此，我正在使用Spring的@JavaConfig技术。但是，每当我尝试在服务器上启动应用程序时，服务器
就无法正常工作（没有引发任何异常，它将获取HTTP 404）。这是项目结构的快照……

这里是代码片段：
WebConfig.java

@EnableWebMvc
@Configuration
@ComponentScan({ "com.controller" })
public class WebConfig extends WebMvcConfigurerAdapter {

    private static final String VIEW_LOCATION = "/WEB-INF/views/";
    private static final String SUFFIX = ".jsp";

//  @Override
//  public void addResourceHandlers(ResourceHandlerRegistry registry) {
//      System.out.println("in resource");
//      registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");       
//  }

    @Bean
    public InternalResourceViewResolver viewResolver() {
        System.out.println("in view");
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix(VIEW_LOCATION);
        viewResolver.setSuffix(SUFFIX);
        return viewResolver;
    }

}

Initializer.java

public class Initializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    private static final String MAPPING_URL = "/";

    @Override
    protected Class<?>[] getRootConfigClasses() {
        System.out.println("in config");
        return new Class[] { WebConfig.class };
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[] { WebConfig.class };
    }

    @Override
    protected String[] getServletMappings() {
        System.out.println("dispatcher");
        return new String[] { MAPPING_URL };
    }

}

HelloController.java

@Controller
public class HelloController {

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String printWelcome() {
        System.out.println("in servlet");
        return "index";
    }

}

And here is the pox.xml snippet:

<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com</groupId>
  <artifactId>UI</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>
  <name>UI Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>4.2.1.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-war-plugin</artifactId>
        <configuration>
          <failOnMissingWebXml>false</failOnMissingWebXml>
        </configuration>
      </plugin>
    </plugins>
    <finalName>UI</finalName>
  </build>
</project>