Created
November 21, 2017 02:10
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Send a slack message to a channel. This provides a demo code to use the slack api and use json to design slack message.
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| package com.armaandhir.slack_integration.util; | |
| import com.mashape.unirest.http.HttpResponse; | |
| import com.mashape.unirest.http.Unirest; | |
| import com.mashape.unirest.http.exceptions.UnirestException; | |
| import org.json.JSONArray; | |
| import org.json.JSONObject; | |
| /** | |
| * Send slack messages using java. | |
| * | |
| * It can be used like: | |
| * url = "https://slack.com/api"; | |
| * slackToken = "xxop-somethinglikethis-verylong"; | |
| * SlackIntegration slackIntegration = new SlackIntegration(url, slackToken); | |
| * slackIntegration.sendSlackNotification("YourChannelName", text.trim()); | |
| */ | |
| public class SlackIntegration | |
| { | |
| private final String slackApiUrl; | |
| private final String token; | |
| private final String postMessageUrl; | |
| public SlackIntegration(String slackApiUrl, String token) | |
| { | |
| this.slackApiUrl = slackApiUrl; | |
| this.token = token; | |
| postMessageUrl = "/chat.postMessage"; | |
| } | |
| /** | |
| * Method to send Slack Notifications regrading unlinked line items. | |
| * @param channel name of the channel | |
| * @param message | |
| */ | |
| public void sendSlackNotification(String channel, String message) throws UnirestException | |
| { | |
| log.info("Sending slack notification to {}: {}", channel, message); | |
| JSONArray json = new JSONArray(); | |
| JSONObject lineOne = new JSONObject(); | |
| lineOne.put("color", "warning"); | |
| lineOne.put("title", "Warning! Warning Items heading"); | |
| lineOne.put("text", "<!here> The following items are causing problems."); | |
| JSONObject lineTwo = new JSONObject(); | |
| lineTwo.put("text", message.trim()); | |
| JSONArray markdownArray = new JSONArray(); | |
| markdownArray.put("text"); | |
| lineTwo.put("mrkdwn_in", markdownArray); | |
| json.put(lineOne); | |
| json.put(lineTwo); | |
| HttpResponse<String> httpResponse = Unirest.post(slackApiUrl + postMessageUrl) | |
| .header("Content-Type", "application/x-www-form-urlencoded") | |
| .queryString("token", token) | |
| .queryString("channel", channel) | |
| //.queryString("text", message) | |
| .queryString("as_user", "false") | |
| .queryString("username", "Test User") | |
| .queryString("attachments", json.toString()) | |
| .asString(); | |
| // find a better way to print toString the json response | |
| log.info("Slack notification sent"); | |
| log.info("Response: {}", httpResponse.getBody().trim()); | |
| } | |
| } // end of class |
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