Add refresh token generation

src/main/java/com/faf223/expensetrackerfaf/config/ExceptionHandlers.java

@@ -0,0 +1,19 @@
+package com.faf223.expensetrackerfaf.config;
+
+import com.faf223.expensetrackerfaf.controller.auth.ErrorResponse;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ControllerAdvice
+public class ExceptionHandlers {
+
+    @ExceptionHandler(TokenExpiredException.class)
+    @ResponseStatus(HttpStatus.UNAUTHORIZED)
+    @ResponseBody
+    public ErrorResponse handleTokenExpiredException(TokenExpiredException ex) {
+        return new ErrorResponse("Unauthorized", ex.getMessage());
+    }
+}