Slack App
앱 추가 → Incoming WebHooks 구성 → Slack에 추가 → 메시지 전송할 채널 선택 후 앱 추가 → 앱 이름/아이콘 설정 → 웹훅 URL 복사
curl -X POST --data-urlencode \
"payload={
\"channel\": \"#my-channel-here\",
\"username\": \"webhookbot\",
\"text\": \"이 항목은 #my-channel-here에 포스트되며 webhookbot이라는 봇에서 제공됩니다.\",
\"icon_emoji\": \":ghost:\"
}" \
https://hooks.slack.com/services/{Team ID}/{Integration ID}/{Secret Key}
Dependency
// https://mvnrepository.com/artifact/com.slack.api/slack-api-client/1.40.3
implementation("com.slack.api:slack-api-client:1.40.3")
Implementation
@Slf4j
@Service
public class SlackClient {
@Value("${webhook.slack.app.webhook-url}")
private String SLACK_APP_WEBHOOK_URL;
private final Slack slackClient = Slack.getInstance();
public void send(Exception e) {
try {
slackClient.send(SLACK_APP_WEBHOOK_URL, payload(p -> p
.attachments(List.of(
Attachment.builder().color(convertToHex(Color.RED))
.fields(
List.of(
generateSlackField("Summary", e.getMessage()),
generateSlackField("Details", formatStackTrace(e.getStackTrace()))
)
).build())))
);
} catch (IOException ex) {
log.warn("App Message Slack failed.");
}
}
private Field generateSlackField(String key, String value) {
return Field.builder()
.title(key)
.value(value)
.valueShortEnough(false)
.build();
}
private String convertToHex(Color color) {
return String.format("#%02x%02x%02x", color.getRed(), color.getGreen(), color.getBlue());
}
private String formatStackTrace(StackTraceElement[] stackTrace) {
return Arrays.stream(stackTrace)
.map(element -> "> " + element.toString())
.collect(Collectors.joining("\n"));
}
}
Results
