feat(event): event 정보 크롤러 구현

src/main/java/com/sickgyun/server/event/exception/EventUrlConnectingError.java

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+package com.sickgyun.server.event.exception;
+
+import org.springframework.http.HttpStatus;
+
+import com.sickgyun.server.common.exception.SickgyunException;
+
+public class EventUrlConnectingError extends SickgyunException {
+	public EventUrlConnectingError() {
+		super(HttpStatus.INTERNAL_SERVER_ERROR, "이벤트 정보 크롤링 도중 서버 연결에 실패하였습니다.");
+	}
+}

src/main/java/com/sickgyun/server/event/scheduler/EventScheduler.java

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+package com.sickgyun.server.event.scheduler;
+
+import java.io.IOException;
+import java.time.YearMonth;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.stream.Stream;
+
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+import org.jsoup.select.Elements;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.sickgyun.server.event.domain.Event;
+import com.sickgyun.server.event.domain.repository.EventRepository;
+import com.sickgyun.server.event.exception.EventUrlConnectingError;
+
+import lombok.RequiredArgsConstructor;
+
+@Component
+@RequiredArgsConstructor
+public class EventScheduler {
+
+	@Value("${event.url}")
+	private String url;
+	private final EventRepository eventRepository;
+
+	@Scheduled(cron = "0 0 5 1 * ?") // 매달 1일 5시
+	@Transactional
+	public void getReqruitInformation() {
+		YearMonth now = YearMonth.now();
+		YearMonth nextMonth = now.plusMonths(1);
+
+		List<Event> thisMonthEvent = getEventsByMonth(now);
+		List<Event> nextMonthEvent = getEventsByMonth(nextMonth);
+
+		List<Event> allEvents = Stream.of(thisMonthEvent, nextMonthEvent)
+			.flatMap(Collection::stream)
+			.toList();
+
+		eventRepository.deleteAll();
+		eventRepository.saveAll(allEvents);
+	}
+
+	private List<Event> getEventsByMonth(YearMonth date) {
+		Document document = connectToServer(date);
+		Elements rawEvents = getRawEvents(document);
+		return getAllEvents(rawEvents, date);
+	}
+
+	private static List<Event> getAllEvents(Elements rawEvents, YearMonth yearMonth) {
+		List<Event> events = new ArrayList<>();
+
+		for (Element rawReqruit : rawEvents) {
+			String imageSrc = "https://dev-event.vercel.app/" + rawReqruit.select("img").get(2).attr("src");
+			String name = rawReqruit.getElementsByClass("Item_item__content__title___fPQa").text();
+			String host = rawReqruit.getElementsByClass("Item_host__zNXMy").text();
+			String date = rawReqruit.getElementsByClass("Item_date__kVMJZ").text();
+			String hashtags = rawReqruit.getElementsByClass("Item_tags___ujeV").text()
+				.replace(" ", "")
+				.replace("#", " #")
+				.substring(1);
+
+			events.add(
+				new Event(
+					imageSrc,
+					name,
+					host,
+					date,
+					hashtags,
+					yearMonth
+				)
+			);
+
+		}
+		return events;
+	}
+
+	private static Elements getRawEvents(Document document) {
+		return document.getElementsByClass("Item_item__86e_I");
+	}
+
+	private Document connectToServer(YearMonth date) {
+		Document document;
+		try {
+			document = Jsoup.connect(String.format(url, date.getYear(), date.getMonth().getValue())).get();
+		} catch (IOException e) {
+			throw new EventUrlConnectingError();
+		}
+		return document;
+	}
+}