wip

src/main/java/com/example/demo/DemoApplication.java

 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.Bean;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
 
 @SpringBootApplication
 public class DemoApplication {
 	public static void main(String[] args) {
 		SpringApplication.run(DemoApplication.class, args);
 	}
+
+	@Bean
+	public WebMvcConfigurer corsConfigurer() {
+		return new WebMvcConfigurerAdapter() {
+			@Override
+			public void addCorsMappings(CorsRegistry registry) {
+				registry.addMapping("*").allowedOrigins("http://localhost:9000");
+			}
+		};
+	}
 }