为连接authlib-injector服务器失败添加错误消息

HMCL/src/main/java/org/jackhuang/hmcl/ui/AuthlibInjectorServersPage.java

@@ -20,6 +20,8 @@ import org.jackhuang.hmcl.util.NetworkUtils;
 
 import static java.util.stream.Collectors.toList;
 
+import java.io.IOException;
+
 public class AuthlibInjectorServersPage extends StackPane implements DecoratorPage {
     private final StringProperty title = new SimpleStringProperty(this, "title", Launcher.i18n("account.injector.server"));
 
@@ -108,7 +110,7 @@ public class AuthlibInjectorServersPage extends StackPane implements DecoratorPa
 
                 transitionHandler.setContent(confirmServerPane, ContainerAnimations.SWIPE_LEFT.getAnimationProducer());
             } else {
-                lblCreationWarning.setText(variables.<Exception>get("lastException").getLocalizedMessage());
+                lblCreationWarning.setText(resolveFetchExceptionMessage(variables.<Exception>get("lastException")));
             }
         }).start();
 
@@ -147,4 +149,12 @@ public class AuthlibInjectorServersPage extends StackPane implements DecoratorPa
         }
         return url;
     }
+
+    private String resolveFetchExceptionMessage(Throwable exception) {
+        if (exception instanceof IOException) {
+            return Launcher.i18n("account.failed.connect_injector_server");
+        } else {
+            return exception.getClass() + ": " + exception.getLocalizedMessage();
+        }
+    }
 }

HMCL/src/main/resources/assets/lang/I18N.properties

@@ -40,6 +40,7 @@ account.failed.invalid_password=Invalid password
 account.failed.invalid_token=Please log out and re-input your password to log in.
 account.failed.no_charactor=No character in this account.
 account.failed.no_selected_server=No authentication server is selected.
+account.failed.connect_injector_server=Cannot connect to the authentication server. Check your network and ensure the URL is correct.
 account.injector.add=Add authentication server
 account.injector.manage=Manage authentication servers
 account.injector.http=Warning: This server is using HTTP, which will cause your password be transmitted in clear text.

HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties

@@ -40,6 +40,7 @@ account.failed.invalid_password=无效的密码
 account.failed.invalid_token=请尝试登出并重新输入密码登录
 account.failed.no_charactor=该帐号没有角色
 account.failed.no_selected_server=未选择认证服务器
+account.failed.connect_injector_server=无法连接认证服务器，可能是网络故障或 URL 输入错误
 account.injector.add=添加认证服务器
 account.injector.manage=管理认证服务器
 account.injector.http=警告：此服务器使用不安全的http协议，您的密码在登录时会被明文传输。