Java tutorial
package com.teozcommunity.teozfrank.duelme.util; /** The MIT License (MIT) Copyright (c) 2014 teozfrank Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; import com.teozcommunity.teozfrank.duelme.main.DuelMe; import org.bukkit.ChatColor; import org.json.simple.JSONArray; import org.json.simple.JSONObject; import org.json.simple.JSONValue; /** * This class is a barebones example of how to use the BukkitDev ServerMods API to check for file updates. * <br> * See the README file for further information of use. */ public class UpdateChecker { private DuelMe plugin; // The project's unique ID private final int projectID; // Keys for extracting file information from JSON response private static final String API_NAME_VALUE = "name"; private static final String API_LINK_VALUE = "downloadUrl"; private static final String API_RELEASE_TYPE_VALUE = "releaseType"; private static final String API_FILE_NAME_VALUE = "fileName"; private static final String API_GAME_VERSION_VALUE = "gameVersion"; // Static information for querying the API private static final String API_QUERY = "/servermods/files?projectIds="; private static final String API_HOST = "https://api.curseforge.com"; public static boolean updateAvailable; /** * Check for updates anonymously (keyless) * * @param projectID The BukkitDev Project ID, found in the "Facts" panel on the right-side of your project page. */ public UpdateChecker(DuelMe plugin, int projectID) { this.plugin = plugin; this.projectID = projectID; this.updateAvailable = false; query(); } /** * Query the API to find the latest approved file's details. */ public void query() { URL url = null; try { // Create the URL to query using the project's ID url = new URL(API_HOST + API_QUERY + projectID); } catch (MalformedURLException e) { // There was an error creating the URL e.printStackTrace(); return; } try { // Open a connection and query the project URLConnection conn = url.openConnection(); // Add the user-agent to identify the program conn.addRequestProperty("User-Agent", "ServerModsAPI-Example (by Gravity)"); // Read the response of the query // The response will be in a JSON format, so only reading one line is necessary. final BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream())); String response = reader.readLine(); // Parse the array of files from the query's response JSONArray array = (JSONArray) JSONValue.parse(response); if (array.size() > 0) { // Get the newest file's details JSONObject latest = (JSONObject) array.get(array.size() - 1); // Get the version's title String versionName = (String) latest.get(API_NAME_VALUE); // Get the version's link String versionLink = (String) latest.get(API_LINK_VALUE); // Get the version's release type String versionType = (String) latest.get(API_RELEASE_TYPE_VALUE); // Get the version's file name String versionFileName = (String) latest.get(API_FILE_NAME_VALUE); // Get the version's game version String versionGameVersion = (String) latest.get(API_GAME_VERSION_VALUE); versionName = versionName.replaceAll("[a-zA-Z]", ""); versionName = versionName.replaceAll(" ", ""); String pluginVersion = plugin.getDescription().getVersion(); pluginVersion = pluginVersion.replaceAll("Alpha", ""); pluginVersion = pluginVersion.replaceAll("Beta", ""); pluginVersion = pluginVersion.replaceAll("Release", ""); pluginVersion = pluginVersion.replaceAll(" ", ""); if (!versionName.equals(pluginVersion)) { this.updateAvailable = true; SendConsoleMessage.info("There is a new update available!"); SendConsoleMessage.info("download it on bukkit dev " + ChatColor.YELLOW + "http://dev.bukkit.org/bukkit-plugins/duelme/"); } else { this.updateAvailable = false; SendConsoleMessage.info("plugin is up to date!"); } } else { System.out.println("There are no files for this project"); } } catch (IOException e) { // There was an error reading the query SendConsoleMessage.severe("There was an error checking for updates!"); return; } } public static boolean isUpdateAvailable() { return updateAvailable; } }