Spring Boot with AngularJS html5Mode

Use this controller to forward the URI to index.html in order to preserve AngularJS routes. Source https://spring.io/blog/2015/05/13/modularizing-the-client-angular-js-and-spring-security-part-vii

@Controller
public class ForwardController {

    @RequestMapping(value = "/**/{[path:[^\\.]*}")
    public String redirect() {
        // Forward to home page so that route is preserved.
        return "forward:/";
    }
} 

In this solution ForwardController forwards only paths, which are not defined in any other Controller nor RestController. It means if you already have:

@RestController
public class OffersController {

    @RequestMapping(value = "api/offers")
    public Page<OfferDTO> getOffers(@RequestParam("page") int page) {
        return offerService.findPaginated(page, 10);
    }
} 

both controllers are going to work properly - @RequestMapping(value = "api/offers") is checked before @RequestMapping(value = "/**/{[path:[^\\.]*}")

I had same problem. As far as I know, in html5 mode, angularjs don't resolve hash but entered url or url added through pushState.

The problem was that PathResourceResolver map directories but not files. Because it intended to serve requested files from directory but not to rewrite urls. For app it's mean, if you refresh your browser window or type url like http://example.com/mystate, it's query "/mystate" from the server. If spring don't know url, they return 404. One of the solutions is map every possible state to index.html like here (source, btw look at webjars - it's great!). But in my case I can safely map "/**" to index.html and therefore my solution is to override PathResourceResolver#getResource:

@Configuration
@EnableConfigurationProperties({ ResourceProperties.class })
public class WebMvcConfig extends WebMvcConfigurerAdapter {

    @Autowired
    private ResourceProperties resourceProperties = new ResourceProperties();

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        Integer cachePeriod = resourceProperties.getCachePeriod();

        registry.addResourceHandler("/static/**")
                .addResourceLocations("classpath:/static/")
                .setCachePeriod(cachePeriod);

        registry.addResourceHandler("/**")
                .addResourceLocations("classpath:/static/index.html")
                .setCachePeriod(cachePeriod).resourceChain(true)
                .addResolver(new PathResourceResolver() {
                    @Override
                    protected Resource getResource(String resourcePath,
                            Resource location) throws IOException {
                        return location.exists() && location.isReadable() ? location
                                : null;
                    }
                });
    }
}