StaticFilesConfig.java

StaticFilesConfig.java

package com.example.backend.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.resource.PathResourceResolver;

import java.io.IOException;

@Configuration
public class StaticFilesConfig implements WebMvcConfigurer {
	@Override
	public void addResourceHandlers(ResourceHandlerRegistry registry) {
		registry.addResourceHandler("/**")
				.addResourceLocations("classpath:/static/")
				.resourceChain(true)
				.addResolver(new PathResourceResolver() {
					@Override
					protected Resource getResource(
							String resourcePath,
							Resource location
					) throws IOException {
						Resource requestedResource = location.createRelative(
								resourcePath
						);

						return (
								requestedResource.exists() &&
										requestedResource.isReadable()
						) ? requestedResource
								: new ClassPathResource("/static/index.html");
					}
				});
	}
}