Spring MVC Rest Controller 404

Question

I am using a Spring MVC (5.3.7) app which has a Rest Controller. When I deploy the war using Intellij or manually on Tomcat 10.0 server, the get url gives me 404. After trying different Spring MVC configs which offcourse didn't work. Finally I resorted to the following config but still no luck

My DispatcherServletInitializer,

package com.luv2code.springdemo.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class MySpringMvcDispatcherServletInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        // TODO Auto-generated method stub
        return null;
    }

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

    @Override
    protected String[] getServletMappings() {
        return new String[] { "/" };
    }

}

My DemoConfig class as below used above,

@Configuration
@EnableWebMvc
@ComponentScan("com.luv2code.springdemo")
public class DemoAppConfig implements WebMvcConfigurer {

}

RestController class

@RestController
@RequestMapping("/api")
public class CustomerRestController {
    @GetMapping("/customers")
    public List<Customer> getCustomers() {
        return customerService.getCustomers();
    }
}

I have also added index.jsp in webapp folder in classpath which shows the right html (no 404 in route) when war is deployed. Meaning my MVC setup is fine but I don't know why I cannot reach the controller. I am using Java 11, here are the MAVEN dependencies list,

javax.servlet-api - 4.0.1 javax.servlet.jsp-api - 2.3.3 spring-webmvc - 5.3.7 Final Packaging - war

Answer 1

Thanks for the suggestion. Downgrading to Tomcat@9 has done the work for me. Everything seems to be working now.

Here is the issue link which describes the incompatibility with Spring MVC 5.3.7 and Tomcat@10