add CreateDiscussion.java: It's the first time add flarum to this project

Author: Mryan2005

src/main/java/top/mryan2005/simplifiedjava/flarum/CreateDiscussion.java

@@ -0,0 +1,100 @@
+package top.mryan2005.simplifiedjava.flarum;
+
+import java.io.BufferedReader;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+public class CreateDiscussion {
+
+    private String title;
+    private String content;
+    private String[] tags;
+    private String token;
+    private String hostUrl;
+
+    public CreateDiscussion(String hostUrl, String token, String title, String content, String[] tags) {
+        this.title = title;
+        this.content = content;
+        this.tags = tags;
+        this.token = token;
+        this.hostUrl = hostUrl;
+    }
+
+    public StringBuffer submit() {
+        try {
+            // URL of the server endpoint
+            URL url = new URL(hostUrl + "/api/discussions");
+            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+
+            // Set the request method to POST
+            connection.setRequestMethod("POST");
+            connection.setDoOutput(true);
+
+            // Set request headers
+            connection.setRequestProperty("Content-Type", "application/json");
+            connection.setRequestProperty("Accept", "application/json");
+            connection.setRequestProperty("Authorization", "Token " + this.token);
+
+            // JSON payload
+            String jsonInputString = String.format(
+                "{" +
+                    "\"data\": {" +
+                        "\"type\": \"discussions\"," +
+                        "\"attributes\": {" +
+                            "\"title\": \"%s\"," +
+                            "\"content\": \"%s\"" +
+                        "}," +
+                        "\"relationships\": {" +
+                            "\"tags\": {" +
+                                "\"data\": [" +
+                                    "%s" +
+                                "]" +
+                            "}" +
+                        "}" +
+                    "}" +
+                "}",
+                title, content, String.join(",", tags)
+            );
+
+            // Send the request
+            try (OutputStream os = connection.getOutputStream()) {
+                byte[] input = jsonInputString.getBytes("utf-8");
+                os.write(input, 0, input.length);
+            }
+
+            // Get the response code
+            int responseCode = connection.getResponseCode();
+            System.out.println("Response Code: " + responseCode);
+
+            // Handle the response (optional)
+             InputStream inputStream = connection.getInputStream();
+             BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
+             String line;
+             StringBuffer response = new StringBuffer();
+             while ((line = reader.readLine()) != null) {
+                 response.append(line);
+             }
+             reader.close();
+             return response;
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public static void main(String[] args) {
+        String hostUrl = "https://xxx.com";
+        String token = "xxx";
+        String title = "Hello World";
+        String content = "This is a test discussion";
+        String[] tags = new String[]{"{\"type\": \"tags\", \"id\": \"19\"}"};
+        CreateDiscussion createDiscussion = new CreateDiscussion(
+            hostUrl, token, title, content, tags
+        );
+        createDiscussion.submit();
+    }
+}