@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.example.controller")
public class AppConfig {
    @Bean
    public InternalResourceViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix("/WEB-INF/views/");
        viewResolver.setSuffix(".jsp");
        return viewResolver;
    }
}

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.example.controller")
public class AppConfig {
    @Bean
    public FreeMarkerViewResolver viewResolver() {
        FreeMarkerViewResolver viewResolver = new FreeMarkerViewResolver();
        viewResolver.setPrefix("/WEB-INF/views/");
        viewResolver.setSuffix(".ftl");
        return viewResolver;
    }
}

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.example.controller")
public class AppConfig {
    @Bean
    public TilesConfigurer tilesConfigurer() {
        TilesConfigurer tilesConfigurer = new TilesConfigurer();
        tilesConfigurer.setDefinitions(new String[] { "/WEB-INF/tiles.xml" });
        return tilesConfigurer;
    }
    @Bean
    public TilesViewResolver viewResolver() {
        TilesViewResolver viewResolver = new TilesViewResolver();
        return viewResolver;
    }
}

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.example.controller")
public class AppConfig {
    @Bean
    public ContentNegotiatingViewResolver viewResolver() {
        ContentNegotiatingViewResolver viewResolver = new ContentNegotiatingViewResolver();
        List<ViewResolver> viewResolvers = new ArrayList<>();
        viewResolvers.add(jsonViewResolver());
        viewResolver.setViewResolvers(viewResolvers);
        return viewResolver;
    }
    @Bean
    public MappingJackson2JsonViewResolver jsonViewResolver() {
        MappingJackson2JsonViewResolver jsonViewResolver = new MappingJackson2JsonViewResolver();
        return jsonViewResolver;
    }
}

public interface ViewResolver {
    View resolveViewName(String viewName, Locale locale) throws Exception;
    String REDIRECT_URL_PREFIX = "redirect:";
    String FORWARD_URL_PREFIX = "forward:";
}

@Override
public View resolveViewName(String viewName, Locale locale) throws Exception {
    String prefix = getPrefix();
    String suffix = getSuffix();
    if (viewName.startsWith(REDIRECT_URL_PREFIX)) {
        String redirectUrl = viewName.substring(REDIRECT_URL_PREFIX.length());
        RedirectView redirectView = new RedirectView(redirectUrl, isRedirectContextRelative(), isRedirectHttp10Compatible());
        String[] hosts = StringUtils.toStringArray(getRedirectHosts());
        if (hosts.length > 0) {
            redirectView.setHosts(hosts);
        }
        return redirectView;
    }
    if (viewName.startsWith(FORWARD_URL_PREFIX)) {
        String forwardUrl = viewName.substring(FORWARD_URL_PREFIX.length());
        InternalResourceView forwardView = new InternalResourceView(forwardUrl);
        forwardView.setApplicationContext(getApplicationContext());
        forwardView.setServletContext(getServletContext());
        forwardView.setAttributesMap(getAttributesMap());
        return forwardView;
    }
    if (!viewName.startsWith(prefix) && !viewName.endsWith(suffix)) {
        viewName = prefix + viewName + suffix;
    }
    return buildView(viewName);
}