Java 带Android的JDBC-Oracle JDBC可诊断性MBean错误

我已经尝试了网络上几乎所有可用的方法来纠正错误，但它总是突然出现

使用修补的

ojdbc6

处理

日志记录.properties

（

oracle.jdbc.level=OFF

）等。没有任何工作

我正在为Android应用程序使用

jdbc6

。大约一周前，该应用程序运行良好（连接后使用简单的select语句）。没有任何改变，但突然它停止了工作

错误是

W/oracle.jdbc: Error while registering Oracle JDBC Diagnosability MBean.
    java.lang.NoClassDefFoundError: Failed resolution of: Ljava/lang/management/ManagementFactory;
        at oracle.jdbc.driver.OracleDriver.registerMBeans(OracleDriver.java:322)
        at oracle.jdbc.driver.OracleDriver$1.run(OracleDriver.java:201)
        at java.security.AccessController.doPrivileged(AccessController.java:45)
        at oracle.jdbc.driver.OracleDriver.<clinit>(OracleDriver.java:197)
        at java.lang.Class.classForName(Native Method)
        at java.lang.Class.forName(Class.java:309)
        at java.lang.Class.forName(Class.java:273)
        at com.example.duke.jdbcoracle.MainActivity$ConnectToOracle.doInBackground(MainActivity.java:132)
        at com.example.duke.jdbcoracle.MainActivity$ConnectToOracle.doInBackground(MainActivity.java:123)
        at android.os.AsyncTask$2.call(AsyncTask.java:292)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
        at java.lang.Thread.run(Thread.java:818)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "java.lang.management.ManagementFactory" on path: DexPathList[[zip file "/data/app/com.example.duke.jdbcoracle-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
        at oracle.jdbc.driver.OracleDriver.registerMBeans(OracleDriver.java:322) 
        at oracle.jdbc.driver.OracleDriver$1.run(OracleDriver.java:201) 
        at java.security.AccessController.doPrivileged(AccessController.java:45) 
        at oracle.jdbc.driver.OracleDriver.<clinit>(OracleDriver.java:197) 
        at java.lang.Class.classForName(Native Method) 
        at java.lang.Class.forName(Class.java:309) 
        at java.lang.Class.forName(Class.java:273) 
        at com.example.duke.jdbcoracle.MainActivity$ConnectToOracle.doInBackground(MainActivity.java:132) 
        at com.example.duke.jdbcoracle.MainActivity$ConnectToOracle.doInBackground(MainActivity.java:123) 
        at android.os.AsyncTask$2.call(AsyncTask.java:292) 
        at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) 
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 
        at java.lang.Thread.run(Thread.java:818) 
        Suppressed: java.lang.ClassNotFoundException: java.lang.management.ManagementFactory
        at java.lang.Class.classForName(Native Method)
        at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
        at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
                ... 16 more
    Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
    12-09 23:13:50.420 4414-4450/com.example.duke.jdbcoracle D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true

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嗯。在过去3天的尝试和失败之后，我找到了一个部分，在那里我不需要在任何地方放置任何类路径等。我不知道这个解决方案是否正确，但它是有效的

只需将ojdbc6.jre复制到

Linux

/usr/lib/jvm/YOUR_ORACLE/jre/lib/ext/

在窗户上

C:/program files/java/jre_yourversion/lib/ext/

C:/program files/java/jre_yourversion/lib/ext/