Spring boot How to add prefix "/api" to certain urls, but not on "/" "/login" - spring-boot

Question

springboot 2.2.4 version
so i was trying to make prefix to every controller on my application
"/api"
i have done by following code
//DispatcherServletCustomConfiguration.java
#Configuration
public class DispatcherServletCustomConfiguration {
#Bean
public DispatcherServlet dispatcherServlet() {
return new DispatcherServlet();
}
#Bean
public DispatcherServletRegistrationBean dispatcherServletRegistration() {
DispatcherServletRegistrationBean registration = new DispatcherServletRegistrationBean(
dispatcherServlet(), "/api/");
registration.setName(DispatcherServletAutoConfiguration.DEFAULT_DISPATCHER_SERVLET_REGISTRATION_BEAN_NAME);
return registration;
}
}
but i want to exclude certain urls that returns static resources
such as "/" "/login" "/404page"
those url need to return index.html
however by adding those prefix, "index.html" is mapped to /api/
how can i distinguish url that return static resources(image, html, css)
and api calls that returns json to add prefix
ex) there is too many controller to add requestMapping for each controller

Answer 1

1st solution:
Remove the DispatcherServletRegistrationBean configuration and configure nothing at servlet level.
Use #RequestMapping("/api") on all the controllers at class level. Then you can achieve that the "/api" will be appended at the initial path for all requests and also the "/", "/login" paths can also be called succesfully.
2nd solution:
add url mappings in the config like below:
package com.test.sampleproject;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.DispatcherServlet;
#Configuration
public class AppConfig {
#Bean
public DispatcherServlet dispatcherServlet() {
return new DispatcherServlet();
}
#SuppressWarnings("rawtypes")
#Bean
public ServletRegistrationBean axisServletRegistrationBean() {
#SuppressWarnings("unchecked")
ServletRegistrationBean registration = new ServletRegistrationBean(dispatcherServlet(), "/*");
registration.addUrlMappings("/api/*");
return registration;
}
}
Controller class:
package com.test.sampleproject.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
#RestController
public class RetryController {
#GetMapping("/test1")
public String sampleApi1() {
return "test1 api called";
}
#GetMapping("/")
public String sampleApi2() {
return "index";
}
}
The following url's are valid from this config:
localhost:8080/ ---> will hit the "/" path method in
RetryConroller
localhost:8080/api/test1 ---> will hit the "test1" path method in
RetryConroller
localhost:8080/test1 ---> will hit the "test1" path method in
RetryConroller