Added web exception handling

src/main/java/de/webalf/slotbot/exception/ResourceNotFoundException.java

@@ -1,5 +1,6 @@
 package de.webalf.slotbot.exception;
 
+import de.webalf.slotbot.model.annotations.ResponseView;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.ResponseStatus;
 
@@ -10,8 +11,11 @@
  * @since 22.06.2020
  */
 @ResponseStatus(value = HttpStatus.NOT_FOUND, reason = "Resource not found")
+@ResponseView
 public class ResourceNotFoundException extends RuntimeException {
 
+	private static final long serialVersionUID = 3327000772094345936L;
+
 	public ResourceNotFoundException() {
 		super();
 	}

src/main/java/de/webalf/slotbot/exception/ExceptionHandlerAdvice.java → src/main/java/de/webalf/slotbot/exception/RestResponseEntityExceptionHandler.java

@@ -2,6 +2,7 @@
 
 import de.webalf.slotbot.util.StringUtils;
 import org.springframework.core.annotation.AnnotationUtils;
+import org.springframework.core.annotation.Order;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
@@ -11,6 +12,7 @@
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.context.request.ServletWebRequest;
 import org.springframework.web.context.request.WebRequest;
 import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
@@ -27,7 +29,8 @@
  * @author Alf
  * @since 09.08.2020
  */
-@ControllerAdvice
+@ControllerAdvice(annotations = RestController.class)
+@Order(1)
 class RestResponseEntityExceptionHandler extends ResponseEntityExceptionHandler {
 
 	@ExceptionHandler(value = {ResourceNotFoundException.class, BusinessRuntimeException.class, ForbiddenException.class,

src/main/java/de/webalf/slotbot/exception/WebResponseEntityExceptionHandler.java

@@ -0,0 +1,46 @@
+package de.webalf.slotbot.exception;
+
+import de.webalf.slotbot.model.annotations.ResponseView;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.core.annotation.AnnotationUtils;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;
+import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
+import org.springframework.web.servlet.view.RedirectView;
+
+/**
+ * @author Alf
+ * @since 09.06.2021
+ */
+@ControllerAdvice(annotations = Controller.class)
+@Order(2)
+@Slf4j
+public class WebResponseEntityExceptionHandler  extends ResponseEntityExceptionHandler {
+
+	@ExceptionHandler(value = {ResourceNotFoundException.class, MethodArgumentTypeMismatchException.class})
+	protected RedirectView handleConflict(RuntimeException ex) {
+		return new RedirectView(determineRedirectView(ex));
+	}
+
+	/**
+	 * Uses the Annotation from the Exception if available
+	 *
+	 * @param e exception to check
+	 * @return annotated reason or message of exception
+	 */
+	private String determineRedirectView(Exception e) {
+		ResponseView responseViewAnnotation = AnnotationUtils.findAnnotation(e.getClass(), ResponseView.class);
+		if (responseViewAnnotation != null) {
+			return responseViewAnnotation.value();
+		}
+		try {
+			return (String) ResponseView.class.getMethod("value").getDefaultValue();
+		} catch (NoSuchMethodException noSuchMethodException) {
+			log.error("Failed to get default value of ResponseView class", noSuchMethodException);
+			return "";
+		}
+	}
+}

src/main/java/de/webalf/slotbot/model/annotations/ResponseView.java

@@ -0,0 +1,16 @@
+package de.webalf.slotbot.model.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * @author Alf
+ * @since 09.06.2021
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.TYPE})
+public @interface ResponseView {
+	String value() default "/error/404";
+}