Using Redirect in Spring Boot


Im having trouble using redirect functionality within my spring boot application. As shown in my code below im returning "redirect:/aucConfirm/" but when i initiate this i get a "This application has no explicit mapping" error.

@Controller @RequestMapping("/") public class WelcomeController { @Autowired AuctionItemRepository aucRepository; // inject via application.properties @Value("${welcome.message:test}") private String message = "Hello World"; @RequestMapping(value = "/") public String welcome(Map<String, Object> model) { model.put("message", this.message); return "welcome"; } @RequestMapping(value = "/sell", method = RequestMethod.GET) public String addAuction(Model model, HttpServletRequest request) { model.addAttribute("newAuction", new AuctionItem()); return "NewAuction"; } @RequestMapping(value = "/sell", method = RequestMethod.POST) public String saveAuction(@ModelAttribute AuctionItem newAuction, RedirectAttributes attributes){ return "redirect:/aucConfirm"; } @RequestMapping(value = "/aucConfirm", method = RequestMethod.GET) public String confirmNewAuction(Model model, HttpServletRequest request) { return "aucConfirm"; } }

This is my current configuration class -

@SpringBootApplication @ComponentScan @EnableJpaRepositories("All") @EntityScan("All") public class AuctionWebApplication extends SpringBootServletInitializer { @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder application) { return application.sources(AuctionWebApplication.class); } public static void main(String[] args) throws Exception { SpringApplication.run(AuctionWebApplication.class, args); } @Bean DataSource dataSource() { DriverManagerDataSource dataSource = new DriverManagerDataSource(); dataSource.setDriverClassName("com.mysql.jdbc.Driver"); dataSource.setUrl("jdbc:mysql://localhost:3306/auctiondb?zeroDateTimeBehavior=convertToNull"); dataSource.setUsername("root"); dataSource.setPassword("toor"); return dataSource; } @Bean public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource) { LocalContainerEntityManagerFactoryBean entityManager = new LocalContainerEntityManagerFactoryBean(); entityManager.setDataSource(dataSource); entityManager.setJpaVendorAdapter(new HibernateJpaVendorAdapter()); entityManager.setPackagesToScan("All"); Properties jpaProperties = new Properties(); jpaProperties.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQLDialect"); jpaProperties.setProperty("hibernate.hbm2ddl.auto", "update"); jpaProperties.setProperty("hibernate.id.new_generator_mappings", "false"); entityManager.setJpaProperties(jpaProperties); return entityManager; }



Could it possibly have something to do with my jsp page that im trying to establish the recommit? I have a mvc form here -

<mvc:form class="form-inline" action="${action}" method="post" modelAttribute="newAuction" id="addNewAuc">

and when the user hits the next button it should hit the "redirect:/aucConfirm" -

<button type="submit" name="submit" class="btn btn-success" form="addNewAuc">Next</button>

Is there anything wrong with this code? Im running out of ideas at this point. Do i need to add anything to my spring boot configuration class to get it working? - Please help!

<em>Update 2</em>

<a href="http://localhost:8080/AuctionWebsite/sell" rel="nofollow">http://localhost:8080/AuctionWebsite/sell</a> <a href="https://i.stack.imgur.com/fDhqQ.png" rel="nofollow"><img alt="" class="b-lazy" data-src="https://i.stack.imgur.com/fDhqQ.png" data-original="https://i.stack.imgur.com/fDhqQ.png" src="https://etrip.eimg.top/images/2019/05/07/timg.gif" /></a>

When i enter details int this form and select next i want it to redirect to- <a href="http://localhost:8080/AuctionWebsite/aucConfirm" rel="nofollow">http://localhost:8080/AuctionWebsite/aucConfirm</a>

However this is what appears-

<a href="https://i.stack.imgur.com/hpC3S.png" rel="nofollow"><img alt="enter image description here" class="b-lazy" data-src="https://i.stack.imgur.com/hpC3S.png" data-original="https://i.stack.imgur.com/hpC3S.png" src="https://etrip.eimg.top/images/2019/05/07/timg.gif" /></a>

not redirecting at all and remaining with link <a href="http://localhost:8080/AuctionWebsite/sell" rel="nofollow">http://localhost:8080/AuctionWebsite/sell</a>

<a href="http://localhost:8080/AuctionWebsite/aucConfirm" rel="nofollow">http://localhost:8080/AuctionWebsite/aucConfirm</a> works when entered manually

Im getting a little bit desperate at this point, would really appreciate any help.


Use this code


Instead of


As per your updated question. it seems that


"This application has no explicit mapping" error


Is for /error url;

The actual error is


Validation failed for object 'auctionItem'


So problem is not with redirection , it is something else related to validation. You may find specific error on console log.


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