我正在尝试让我的 Android 连接到我的 as400 服务器。不幸的是,当我单击 My Connexion 按钮时,驱动程序没有加载,我不知道为什么。
这是我的代码:
package hello.world;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
public class HelloworldActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void Connexion(View view) throws SQLException {
System.out.println("Tentative de connexion à la base de donnée."); //Connexion
String driver = "com.ibm.as400.access.AS400JDBCDriver";
String url = "jdbc:as400://BEAUFIX;transaction isolation=read uncommitted;date format=iso;naming=system;libraries=*LIBL";
Connection conn = null;
String userName = "GMAOBD60";
String password = "GMAOBD60";
try {
Class.forName(driver).newInstance();
conn = DriverManager.getConnection(url,userName,password);
System.out.println("Connected to the database");
conn.close();
System.out.println("Disconnected from database");
} catch (Exception e) {
e.printStackTrace();
System.out.println("ERROR");
}
}
}
这是我的 xmd 代码:
<Button
android:id="@+id/Connexion"
android:layout_width="196dp"
android:layout_height="wrap_content"
android:layout_marginLeft="50dp"
android:layout_marginTop="100dp"
android:text="@string/Connexion" android:layerType="hardware"
android:onClick="Connexion" />
这是我的错误日志:
06-05 07:18:56.100: W/System.err(564): java.lang.ClassNotFoundException: com.ibm.as400.access.AS400JDBCDriver
06-05 07:18:56.155: W/System.err(564): at java.lang.Class.classForName(Native Method)
06-05 07:18:56.180: W/System.err(564): at java.lang.Class.forName(Class.java:217)
06-05 07:18:56.212: W/System.err(564): at java.lang.Class.forName(Class.java:172)
06-05 07:18:56.241: W/System.err(564): at hello.world.HelloworldActivity.Connexion(HelloworldActivity.java:33)
06-05 07:18:56.271: W/System.err(564): at java.lang.reflect.Method.invokeNative(Native Method)
06-05 07:18:56.290: W/System.err(564): at java.lang.reflect.Method.invoke(Method.java:511)
06-05 07:18:56.321: W/System.err(564): at android.view.View$1.onClick(View.java:3039)
06-05 07:18:56.340: W/System.err(564): at android.view.View.performClick(View.java:3511)
06-05 07:18:56.371: W/System.err(564): at android.view.View$PerformClick.run(View.java:14105)
06-05 07:18:56.371: W/System.err(564): at android.os.Handler.handleCallback(Handler.java:605)
06-05 07:18:56.380: W/System.err(564): at android.os.Handler.dispatchMessage(Handler.java:92)
06-05 07:18:56.391: W/System.err(564): at android.os.Looper.loop(Looper.java:137)
06-05 07:18:56.391: W/System.err(564): at android.app.ActivityThread.main(ActivityThread.java:4424)
06-05 07:18:56.401: W/System.err(564): at java.lang.reflect.Method.invokeNative(Native Method)
06-05 07:18:56.410: W/System.err(564): at java.lang.reflect.Method.invoke(Method.java:511)
06-05 07:18:56.421: W/System.err(564): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
06-05 07:18:56.431: W/System.err(564): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
06-05 07:18:56.431: W/System.err(564): at dalvik.system.NativeStart.main(Native Method)
06-05 07:18:56.441: W/System.err(564): Caused by: java.lang.NoClassDefFoundError: com/ibm/as400/access/AS400JDBCDriver
06-05 07:18:56.460: W/System.err(564): ... 18 more
06-05 07:18:56.460: W/System.err(564): Caused by: java.lang.ClassNotFoundException: com.ibm.as400.access.AS400JDBCDriver
06-05 07:18:56.481: W/System.err(564): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
06-05 07:18:56.492: W/System.err(564): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
06-05 07:18:56.492: W/System.err(564): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
06-05 07:18:56.500: W/System.err(564): ... 18 more
我也尝试了很多东西,但我总是遇到错误。请帮帮我,我想让这个工作:(
不,我没有忘记导入我的 jt400.jar,即“com.ibm.as400.access.AS400JDBCDriver”
提前谢谢你,奥雷利安