使用JDBC的胶子示例项目在iOS设备上不起作用

我有简单的代码与Gluon + JDBC。 我可以在Android设备上连接此代码，但不能在Ipad上连接。

我的build.gradle;

buildscript { repositories { jcenter() } dependencies { classpath 'org.javafxports:jfxmobile-plugin:1.0.6' } } apply plugin: 'org.javafxports.jfxmobile' repositories { jcenter() } dependencies { compile 'mysql:mysql-connector-java:5.0.2' iosRuntime 'mysql:mysql-connector-java:5.0.2' } mainClassName = 'com.mtt8.version15' jfxmobile { android { manifest = 'src/android/AndroidManifest.xml' packagingOptions { exclude 'META-INF/INDEX.LIST' } ios { infoPList = file('src/ios/Default-Info.plist') forceLinkClasses = ['com.mtt8.**.*', 'com.mysql.**.*'] } } } 

这里是Java代码：

 private static final String serverIP="192.168.3.188"; private static final String DB_DRIVER = "com.mysql.jdbc.Driver"; private static final String DB_CONNECTION = "jdbc:mysql://192.168.3.188:3306/kasse_sql?useUnicode=true&characterEncoding=UTF-8"; private static final String DB_USER = "root"; private static final String DB_PASSWORD = "MYPASSWORD"; public static Connection connection = null; public static Statement statement = null; public static String SQL = null; public static PreparedStatement pst = null; public static Connection getDBConnection(){ try { Class.forName("com.mysql.jdbc.Driver"); } catch (ClassNotFoundException e) { e.printStackTrace(); } try { //connection = DriverManager.getConnection(DB_CONNECTION, DB_USER, DB_PASSWORD); connection = DriverManager.getConnection("jdbc:mysql://192.168.3.188:3306/kasse_sql?user=root&password=MYPASSWORD&useUnicode=true&characterEncoding=UTF-8"); msg.setText("Connection is OK"); return connection; } catch (SQLException e) { e.printStackTrace(); msg.setText("Dont Connection"); } return connection; } 

正如我所说，这个代码与Android的工作，但不是我的Ipad。

./gradlew launchIOSDevice后，我得到以下错误

 java.sql.SQLException: Unsupported character encoding 'Cp1252' at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:910) at com.mysql.jdbc.Buffer.readString(Buffer.java:430) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2823) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:812) at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3269) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1182) at com.mysql.jdbc.Connection.createNewIO(Connection.java:2644) at com.mysql.jdbc.Connection.<init>(Connection.java:1531) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266) at java.sql.DriverManager.getConnection(DriverManager.java:179) at java.sql.DriverManager.getConnection(DriverManager.java:144) at com.mtt8.version15.getDBConnection(version15.java:58) at com.mtt8.version15.start(version15.java:32) at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863) at com.sun.javafx.application.LauncherImpl$$Lambda$9.run(Unknown Source) at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326) at com.sun.javafx.application.PlatformImpl$$Lambda$7.run(Unknown Source) at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295) at com.sun.javafx.application.PlatformImpl$$Lambda$19.run(Unknown Source) at java.security.AccessController.doPrivileged(AccessController.java:52) at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294) at com.sun.javafx.application.PlatformImpl$$Lambda$6.run(Unknown Source) at org.robovm.apple.uikit.UIApplication.main(Native Method) at org.robovm.apple.uikit.UIApplication.main(UIApplication.java:384) at org.javafxports.jfxmobile.ios.BasicLauncher.main(BasicLauncher.java:115) IOSWindowSystemInterface : setSwapInterval unimp setSwapInterval(1) ES2ResourceFactory: Prism - createStockShader: FillPgram_Color.frag ES2ResourceFactory: Prism - createStockShader: Texture_Color.frag ES2ResourceFactory: Prism - createStockShader: Solid_TextureRGB.frag IOSWindowSystemInterface : setSwapInterval unimp setSwapInterval(0) 

我已经尝试了不同的连接string，但结果是一样的。

任何人都可以说我为什么我的代码不工作的Ipad？

感谢erkan kaplan

Answer 1

看起来连接器中使用的编码有所改变。

这是在iOS上适用于我的最新版本：

 dependencies { compile 'mysql:mysql-connector-java:3.1.12' } 

对于更新的版本（3.1.13+），我发现你看到的例外：

 java.sql.SQLException: Unsupported character encoding 'Cp1252'. at com.mysql.jdbc.StringUtils.getBytes(StringUtils.java) 

最后，你的build.gradle文件有一个错字：

 jfxmobile { android { manifest = 'src/android/AndroidManifest.xml' packagingOptions { exclude 'META-INF/INDEX.LIST' } // typo!! iOS should be outside android! ios { infoPList = file('src/ios/Default-Info.plist') forceLinkClasses = ['com.mtt8.**.*', 'com.mysql.**.*'] } } 

}

确保这是你如何设置你的select：

 jfxmobile { android { manifest = 'src/android/AndroidManifest.xml' packagingOptions { exclude 'META-INF/INDEX.LIST' } } ios { forceLinkClasses = [ 'com.gluonhq.**.*', 'com.mysql.**.*'] infoPList = file('src/ios/Default-Info.plist') } }