@RestController
@RequestMapping("/ispro_api")
public class MainController {
 
    @Autowired
    private PersonlistDAO personlistDAO;

    static final Logger log = LogManager.getLogger("personlist");
 

    @RequestMapping(value = "/getpersonlist", method = RequestMethod.GET,  produces = MediaType.APPLICATION_JSON_VALUE)
    @ResponseStatus(HttpStatus.OK)
    public List<?> getPersonList(){
        List<Personlist> list = personlistDAO.listPerson();
    return list;
    }

public class WebInitializer implements WebApplicationInitializer {
 
    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        AnnotationConfigWebApplicationContext appContext = new AnnotationConfigWebApplicationContext();
        appContext.register(ApplicationContextConfig.class);
        servletContext.addListener(new ContextLoaderListener(appContext));
 
        ServletRegistration.Dynamic dispatcher = servletContext.addServlet("SpringDispatcher", new DispatcherServlet(appContext));
        dispatcher.addMapping("/");
        dispatcher.setLoadOnStartup(1);

 
        // UtF8 Charactor Filter.
        FilterRegistration.Dynamic fr = servletContext.addFilter("encodingFilter", CharacterEncodingFilter.class);
        fr.setInitParameter("encoding", "UTF-8");
        fr.setInitParameter("forceEncoding", "true");
        fr.addMappingForUrlPatterns(null, true, "/*");

    }

@Configuration
@EnableWebMvc
public class WebMvcConfig extends WebMvcConfigurerAdapter {
  
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
 
        // Default..
    }
 
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

@Configuration
@ComponentScan("ua.rest.*")
 
@EnableTransactionManagement
 
// Load to Environment.
@PropertySources({ @PropertySource("classpath:ds/datasource-cfg.properties") })
 
public class ApplicationContextConfig {
 
   // The Environment class serves as the property holder
   // and stores all the properties loaded by the @PropertySource
   @Autowired
   private Environment env;

   static final Logger log = LogManager.getLogger("personlist");

   @Bean(name = "viewResolver")
   public InternalResourceViewResolver getViewResolver() {
       InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
       viewResolver.setPrefix("/WEB-INF/pages/");
       viewResolver.setSuffix(".jsp");
       //viewResolver.setViewClass(JstlView.class);
       return viewResolver;
   }
 
   @Bean(name = "dataSource")
   public DataSource getDataSource() {
       DriverManagerDataSource dataSource = new DriverManagerDataSource();
 
       // See: datasouce-cfg.properties
       dataSource.setDriverClassName(env.getProperty("ds.database-driver"));
       dataSource.setUrl(env.getProperty("ds.url"));
       dataSource.setUsername(env.getProperty("ds.username"));
       dataSource.setPassword(env.getProperty("ds.password"));
       return dataSource;
   }
 
   @Bean(name = "transactionManager")
   public DataSourceTransactionManager getTransactionManager() {
       DataSourceTransactionManager txManager = new DataSourceTransactionManager();
 
       DataSource dataSource = this.getDataSource();
       txManager.setDataSource(dataSource);
 
       return txManager;
   }
 
}

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
          http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">
  
    <display-name>REST API</display-name>

</web-app>

<build>
        <finalName>ispro_api</finalName>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.2</version>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                    </configuration>
                </plugin>

                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>2.4</version>
                    <configuration>
                        <warSourceDirectory>src/main/webapp</warSourceDirectory>
                        <warName>ispro_api</warName>
                        <failOnMissingWebXml>false</failOnMissingWebXml>
                    </configuration>
                </plugin>

            </plugins>
        </pluginManagement>
    </build>