修复链接校园网服务器超时或无网络连接导致的错误

src/main/java/cn/reddragon/eportal/Authenticator.java

@@ -2,9 +2,12 @@
 
 import cn.reddragon.eportal.utils.HttpUtils;
 
+import java.awt.*;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.net.HttpURLConnection;
+import java.net.NoRouteToHostException;
+import java.net.SocketTimeoutException;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -77,7 +80,39 @@ public static boolean isOnline() {
  online = false;
  return false;
  }
- } catch (Exception e) {
+ } catch (SocketTimeoutException e) {
+ if (SystemTray.isSupported()) {
+ SystemTray tray = SystemTray.getSystemTray();
+ Image image = Toolkit.getDefaultToolkit().createImage("icon.png");
+ TrayIcon icon = new TrayIcon(image, "Error");
+ icon.setImageAutoSize(true);
+ try {
+ tray.add(icon);
+ } catch (AWTException e1) {
+ throw new RuntimeException(e1);
+ }
+ icon.displayMessage("Error", "Connection timeout!", TrayIcon.MessageType.ERROR);
+ tray.remove(icon);
+ System.exit(0);
+ }
+ return false;
+ } catch (NoRouteToHostException e) {
+ if (SystemTray.isSupported()) {
+ SystemTray tray = SystemTray.getSystemTray();
+ Image image = Toolkit.getDefaultToolkit().createImage("icon.png");
+ TrayIcon icon = new TrayIcon(image, "Error");
+ icon.setImageAutoSize(true);
+ try {
+ tray.add(icon);
+ } catch (AWTException e1) {
+ throw new RuntimeException(e1);
+ }
+ icon.displayMessage("Error", "No Internet connection!", TrayIcon.MessageType.ERROR);
+ tray.remove(icon);
+ System.exit(0);
+ }
+ return false;
+ } catch (IOException e) {
  online = false;
  return false;
  }

src/main/java/cn/reddragon/eportal/Config.java

@@ -1,6 +1,9 @@
 package cn.reddragon.eportal;
 
-import java.io.*;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 
@@ -47,7 +50,6 @@ public static String[] read() throws IOException {
  }
  String password = new String(b1);
  stream.close();
- System.out.println(username + " " + password);
  return new String[]{username, password};
  } catch (Exception e) {
  e.printStackTrace();

src/main/java/cn/reddragon/eportal/HelloApplication.java

@@ -12,14 +12,19 @@
 import javafx.scene.control.TextField;
 import javafx.stage.Stage;
 
-import java.io.IOException;
 import java.awt.*;
+import java.io.IOException;
 
 public class HelloApplication extends Application {
  private static Label statusLabel;
  private static Button button;
  public static final Thread askThread = new Thread(() -> {
  while (true) {
+ try {
+ Thread.sleep(2500L);
+ } catch (InterruptedException e) {
+ //throw new RuntimeException(e);
+ }
  Authenticator.isOnline();
  Platform.runLater(() -> {
  statusLabel.setText("Current status:" + (Authenticator.online ? "Online" : "Offline"));
@@ -29,11 +34,6 @@ public class HelloApplication extends Application {
  button.setText("Login");
  }
  });
- try {
- Thread.sleep(2500L);
- } catch (InterruptedException e) {
- //throw new RuntimeException(e);
- }
  }
  });
 
@@ -84,7 +84,6 @@ public static void main(String[] args) {
  e.printStackTrace();
  System.exit(0);
  } catch (IOException ignored) {
-
  }
  launch();
  System.exit(0);

src/main/java/cn/reddragon/eportal/HelloController.java

@@ -3,7 +3,8 @@
 import cn.reddragon.eportal.utils.HttpUtils;
 import cn.reddragon.eportal.utils.IOUtils;
 import cn.reddragon.eportal.utils.URIEncoder;
-import com.google.gson.*;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
 import javafx.fxml.FXML;
 import javafx.scene.control.Button;
 import javafx.scene.control.ChoiceBox;
@@ -29,7 +30,7 @@ public class HelloController {
 
  @FXML
  protected void onLoginButtonClick() {
- if (Authenticator.isOnline()) {
+ if (Authenticator.online) {
  if (button.getText().equals("Login")) {
  resultText.setText("Already logged in!");
  button.setText("Logout");