java.lang.RuntimeException: 執行 doInBackground() 時出錯 Kotlin

Question

我試圖在本地訪問我的 MS 數據庫，所以我有這個 DatabaseHelper.kt 文件，其中包含 Doinbackground Function，這反過來又引發了這個錯誤。

代碼片段06-19 15:28:45.082 18819-18819/? E/Zygote：MountEmulatedStorage() 06-19 15:28:45.082 18819-18819/? E/Zygote: v2 06-19 15:28:45.092 18819-18819/? E/SELinux：[DEBUG] get_category：變量 seinfo：默認靈敏度：NULL，類別：NULL 06-19 15:28:45.092 18819-18819/？ E/art: pid 18819 的 setrlimit(RLIMIT_CORE) 失敗：不允許操作 06-19 15:28:47.814 18819-18819/com.example.mysqlcon E/RecyclerView: 沒有附加適配器； 跳過布局 06-19 15:28:47.924 18819-18819/com.example.mysqlcon E/RecyclerView：未連接適配器； 跳過布局 06-19 15:28:47.984 18819-18862/com.example.mysqlcon E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1

進程：com.example.mysqlcon，PID：18819 java.lang.RuntimeException：執行doInBackground（）時出錯

at android.os.AsyncTask$3.done(AsyncTask.java:304) at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355) at java.util.concurrent.FutureTask.setException(FutureTask.java:222) at java.util.concurrent.FutureTask.run(FutureTask.java:242) at android.os.AsyncTask$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) C 使用者：java.lang.NoClassDefFoundError：解析失敗：Lorg/ietf/jgss/GSSManager； at net.sourceforge.jtds.jdbc.TdsCore.createGssToken(TdsCore.java:4400) at net.sourceforge.jtds.jdbc.TdsCore.sendMSLoginPkt(TdsCore.java:1971) at net.sourceforge.jtds.jdbc.TdsCore.login (TdsCore.java:617) at net.sourceforge.jtds.jdbc.JtdsConnection.(JtdsConnection.java:371) at net.sourceforge.jtds.jdbc.Driver.connect(Driver.java:184) at java.sql.DriverManager .getConnection(DriverManager.java:179) at java.sql.DriverManager.getConnection(DriverManager.java:144) at com.example.mysqlcon.C onnectionClass.dbConn(ConnectionClass.kt:26) at com.example.mysqlcon.DatabaseHelper$SyncData.doInBackground(DatabaseHelper.kt:36) at com.example.mysqlcon.DatabaseHelper$SyncData.doInBackground(DatabaseHelper.kt:23) 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.Z93F725A07423FE1C889F448B3 3D21F46Z:818)

原因：java.lang.ClassNotFoundException：在路徑：DexPathList [[zip 文件“/data/app/com.example.mysqlcon-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 net.sourceforge.jtds.jdbc.TdsCore.createGssToken(TdsCore.java:4400) at net.sourceforge.jtds.jdbc.TdsCore.sendMSLoginPkt(TdsCore.java:1971) at net .sourceforge.jtds.jdbc.TdsCore.login(TdsCore.java:617) t net.sourceforge.jtds.jdbc.JtdsConnection.(JtdsConnection.java:371) at net.sourceforge.jtds.jdbc.Driver.connect(Driver.java:184) at java.sql.DriverManager.getConnection(DriverManager.java: 179) at java.sql.DriverManager.getConnection(DriverManager.java:144) at com.example.mysqlcon.ConnectionClass.dbConn(ConnectionClass.kt:26) at com.example.mysqlcon.DatabaseHelper$SyncData.doInBackground(DatabaseHelper.kt :36) at com.example.mysqlcon.DatabaseHelper$SyncData.doInBackground(DatabaseHelper.kt:23) 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: org.ietf.jgss.GSSManager 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(類加載器.java:504)

... 17 更多原因：java.lang.NoClassDefFoundError: Class 未使用引導 class 加載程序找到； no stack available 06-19 15:28:48.064 18819-18819/com.example.mysqlcon E/WindowManager: android.view.WindowLeaked: Activity com.example.mysqlcon.InvoiceActivity has leaked window com.android.internal.policy.impl .PhoneWindow$DecorView{11c938 VE.... R......D 0,0-681,215} that was originally added here at android.view.ViewRootImpl.(ViewRootImpl.java:530) at android.view.WindowManagerGlobal .addView(WindowManagerGlobal.java:287) at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91) at android.app.Dialog.show(Dialog.java:325) at android.app.ProgressDial og.show(ProgressDialog.java:151) at android.app.ProgressDialog.show(ProgressDialog.java:134) at com.example.mysqlcon.DatabaseHelper$SyncData.onPreExecute(DatabaseHelper.kt:31) at android.os.AsyncTask .executeOnExecutor(AsyncTask.java:591) at android.os.AsyncTask.execute(AsyncTask.java:539) at com.example.mysqlcon.DatabaseHelper.getinvoices(DatabaseHelper.kt:92) at com.example.mysqlcon.InvoiceActivity. onCreate(InvoiceActivity.kt:21) at android.app.Activity.performCreate(Activity.java:6609) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1134) at ZC31B32364CE19CA8 FCD150A417ECCE58Z.app.ActivityThread.performLaunchActivity(ActivityThread.java:3104) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3261) at android.app.ActivityThread.access$1000(ActivityThread.java:219) at android.app. ActivityThread$H.handleMessage(ActivityThread.java:1735) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:145) at android.app.ActivityThread.main (ActivityThread.java:6939) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.Z93F725A07423FE 1C889F448B33D21F46Z:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)

Answer 1

你有這個：

java.lang.Thread.run(Thread.java:818) Caused by: 
java.lang.NoClassDefFoundError: Failed resolution of: 
Lorg/ietf/jgss/GSSManager; at

您使用的 proguard 規范不正確，或者此 class 不可用，因為缺少依賴項。