OZG-106 OZG-206 fix reload of angular app

goofy-server/src/main/java/de/itvsh/goofy/WebConfig.java

+package de.itvsh.goofy;
+
+import java.io.IOException;
+
+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;
+
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+
+	@Override
+	public void addResourceHandlers(ResourceHandlerRegistry registry) {
+
+		registry.addResourceHandler("/**/*")
+				.addResourceLocations("classpath:/META-INF/resources/")
+				.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("/META-INF/resources/index.html");
+					}
+				});
+
+	}
+
+}