MySQL Create Table不起作用

时间：2016-04-15 14:08:24

标签： mysql plugins bukkit

你能用MySQL帮我吗？我尝试为Bukkit制作一些插件，但我最新的插件无法在MySQL中创建表。服务器每次都崩溃（它加载插件但后来没有任何事情发生）我不知道为什么...... 

rawfilebuffer.resize(filesize/sizeof(myType)+(filesize%sizeof(myType)?1U:0U));

这是Crash-Log中的一行。 如果你可以帮助我会很好。 Sry 4英语不好，我是德语：D

// -------- 德语： 嘿，Ich habe ein问题... Jedes mal wennIchüberinBukkit Plugin eine Datenbank Tabelle erstelle，hörtderServer auf zu reagieren。 Erlädtimmerbis zu dem Punkt，ab dem er die Tabelle erstellen sollundlädtdannnicht mehr weiter。 Nachdem Ich den Server stoppe steht in den Crash-Logs dass folgende Zeilefehlerhaftwäre：

String tablename = "Test";
String request = "Spielername VARCHAR(100), Testvalue VARCHAR(100)";
con.createStatement().executeUpdate("CREATE TABLE IF NOT EXISTS "+tablename+" ("+request+")");

Bisher hat diese aber immer funktioniert und beim debuggen wird auch ausgegeben，dass der Server mit der Datenbank verbunden ist。

//附加信息（Stacktrace）：     ---- Minecraft崩溃报告----     //我只是不知道出了什么问题：（

String tablename = "Test";
String request = "Spielername VARCHAR(100), Testvalue VARCHAR(100)";
con.createStatement().executeUpdate("CREATE TABLE IF NOT EXISTS "+tablename+" ("+request+")");

*编辑： //全方法

Time: 4/15/16 3:36 PM
Description: Watching Server

java.lang.Error
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
    at java.net.SocketInputStream.read(SocketInputStream.java:170)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:114)
    at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:161)
    at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:189)
    at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2526)
    at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2979)
    at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2968)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3516)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1986)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2140)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2620)
    at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1662)
    at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1581)
    at mysqllib.MySQL.createTable(MySQL.java:65)
    at mysqllib.LibClass.<init>(LibClass.java:6)
    at mysqllib.RankLib.<init>(RankLib.java:17)
    at mysqllib.Main.onEnable(Main.java:48)
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321)
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332)
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404)
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:341)
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:313)
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.reload(CraftServer.java:721)
    at org.bukkit.Bukkit.reload(Bukkit.java:543)
    at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:25)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140)
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:621)
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchServerCommand(CraftServer.java:607)
    at net.minecraft.server.v1_8_R3.DedicatedServer.aO(DedicatedServer.java:371)
    at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:336)
    at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:632)
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:540)
    at java.lang.Thread.run(Thread.java:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
    at java.net.SocketInputStream.read(SocketInputStream.java:170)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:114)
    at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:161)
    at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:189)
    at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2526)
    at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2979)
    at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2968)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3516)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1986)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2140)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2620)
    at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1662)
    at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1581)
    at mysqllib.MySQL.createTable(MySQL.java:65)
    at mysqllib.Main.onEnable(Main.java:48)
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321)
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332)
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404)
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:341)
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:313)
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.reload(CraftServer.java:721)
    at org.bukkit.Bukkit.reload(Bukkit.java:543)
    at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:25)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140)
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:621)
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchServerCommand(CraftServer.java:607)
    at net.minecraft.server.v1_8_R3.DedicatedServer.aO(DedicatedServer.java:371)
    at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:336)
    at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:632)

-- Thread Dump --
Details:
    Threads: "Timer-2" Id=97 TIMED_WAITING on java.util.TaskQueue@66be0ec4
    at java.lang.Object.wait(Native Method)
    -  waiting on java.util.TaskQueue@66be0ec4
    at java.util.TimerThread.mainLoop(Timer.java:552)
    at java.util.TimerThread.run(Timer.java:505)


"pool-46-thread-1" Id=96 TIMED_WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@6879ec63
    at sun.misc.Unsafe.park(Native Method)
    -  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@6879ec63
    at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
    at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
    at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    ...


"EbeanCacheWarmer" Id=95 TIMED_WAITING
    at java.lang.Thread.sleep(Native Method)
    at com.avaje.ebeaninternal.server.core.DefaultServerFactory$CacheWarmer.run(DefaultServerFactory.java:509)
    at java.util.TimerThread.mainLoop(Timer.java:555)
    at java.util.TimerThread.run(Timer.java:505)


"pool-26-thread-2" Id=93 TIMED_WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@6c4665b4
    at sun.misc.Unsafe.park(Native Method)
    -  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@6c4665b4
    at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
    at java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
    at java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    ...


"pool-29-thread-2" Id=92 TIMED_WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2944e658
    at sun.misc.Unsafe.park(Native Method)
    -  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@2944e658
    at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
    at java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
    at java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    ...


"Netty Epoll Server IO #4" Id=26 RUNNABLE (in native)
    at io.netty.channel.epoll.Native.epollWait(Native Method)
    at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:194)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:219)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
    at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #3" Id=25 RUNNABLE
    at io.netty.channel.epoll.Native.epollWait(Native Method)
    at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:194)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:219)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
    at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #2" Id=24 RUNNABLE (in native)
    at io.netty.channel.epoll.Native.epollWait(Native Method)
    at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:194)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:219)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
    at java.lang.Thread.run(Thread.java:745)


"pool-4-thread-1" Id=91 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@3f9a059a
    at sun.misc.Unsafe.park(Native Method)
    -  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@3f9a059a
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #1" Id=23 RUNNABLE (in native)
    at io.netty.channel.epoll.Native.epollWait(Native Method)
    at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:194)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:219)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
    at java.lang.Thread.run(Thread.java:745)


"File IO Thread" Id=90 TIMED_WAITING
    at java.lang.Thread.sleep(Native Method)
    at net.minecraft.server.v1_8_R3.FileIOThread.c(SourceFile:51)
    at net.minecraft.server.v1_8_R3.FileIOThread.run(SourceFile:30)
    at java.lang.Thread.run(Thread.java:745)


"Server Watchdog" Id=71 RUNNABLE
    at sun.management.ThreadImpl.dumpThreads0(Native Method)
    at sun.management.ThreadImpl.dumpAllThreads(ThreadImpl.java:454)
    at net.minecraft.server.v1_8_R3.ThreadWatchdog.run(SourceFile:43)
    at java.lang.Thread.run(Thread.java:745)


"Timer-1" Id=59 TIMED_WAITING on java.util.TaskQueue@1827ecfe
    at java.lang.Object.wait(Native Method)
    -  waiting on java.util.TaskQueue@1827ecfe
    at java.util.TimerThread.mainLoop(Timer.java:552)
    at java.util.TimerThread.run(Timer.java:505)


"Timer-0" Id=55 TIMED_WAITING on java.util.TaskQueue@4713518b
    at java.lang.Object.wait(Native Method)
    -  waiting on java.util.TaskQueue@4713518b
    at java.util.TimerThread.mainLoop(Timer.java:552)
    at java.util.TimerThread.run(Timer.java:505)


"pool-8-thread-1" Id=54 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@496b1917
    at sun.misc.Unsafe.park(Native Method)
    -  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@496b1917
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1081)
    at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    ...


"Ebean-TeleportSigns.0" Id=51 WAITING on java.lang.Object@26326375
    at java.lang.Object.wait(Native Method)
    -  waiting on java.lang.Object@26326375
    at java.lang.Object.wait(Object.java:502)
    at com.avaje.ebeaninternal.server.lib.thread.PooledThread.run(PooledThread.java:75)
    at java.lang.Thread.run(Thread.java:745)


"EbeanBackgroundThread" Id=50 TIMED_WAITING
    at java.lang.Thread.sleep(Native Method)
    at com.avaje.ebeaninternal.server.lib.BackgroundThread$Runner.run(BackgroundThread.java:168)
    at java.lang.Thread.run(Thread.java:745)


"Java2D Disposer" Id=47 WAITING on java.lang.ref.ReferenceQueue$Lock@1d53b51
    at java.lang.Object.wait(Native Method)
    -  waiting on java.lang.ref.ReferenceQueue$Lock@1d53b51
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
    at sun.java2d.Disposer.run(Disposer.java:148)
    at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #0" Id=22 RUNNABLE (in native)
    at io.netty.channel.epoll.Native.epollWait(Native Method)
    at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:194)
    at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:219)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
    at java.lang.Thread.run(Thread.java:745)


"Server console handler" Id=18 RUNNABLE (in native)
    at java.io.FileInputStream.readBytes(Native Method)
    at java.io.FileInputStream.read(FileInputStream.java:255)
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
    at java.io.BufferedInputStream.read(BufferedInputStream.java:265)
    -  locked java.io.BufferedInputStream@5c17bde9
    at org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:248)
    at org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:261)
    -  locked org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream@4d25a4dd
    at org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:198)
    -  locked org.bukkit.craftbukkit.libs.jline.internal.NonBlockingInputStream@4d25a4dd
    at org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:2145)
    ...


"Thread-4" Id=19 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@78b94fc7
    at sun.misc.Unsafe.park(Native Method)
    -  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@78b94fc7
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at com.mojang.util.QueueLogAppender.getNextLogEvent(QueueLogAppender.java:77)
    at org.bukkit.craftbukkit.v1_8_R3.util.TerminalConsoleWriterThread.run(TerminalConsoleWriterThread.java:25)
    at java.lang.Thread.run(Thread.java:745)


"DestroyJavaVM" Id=17 RUNNABLE


"Server thread" Id=15 RUNNABLE (in native)
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
    at java.net.SocketInputStream.read(SocketInputStream.java:170)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:114)
    at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:161)
    at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:189)
    -  locked com.mysql.jdbc.util.ReadAheadInputStream@509eec32
    at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2526)
    ...


"Server Infinisleeper" Id=16 TIMED_WAITING
    at java.lang.Thread.sleep(Native Method)
    at net.minecraft.server.v1_8_R3.DedicatedServer$1.run(DedicatedServer.java:53)


"Snooper Timer" Id=12 TIMED_WAITING on java.util.TaskQueue@5164a28c
    at java.lang.Object.wait(Native Method)
    -  waiting on java.util.TaskQueue@5164a28c
    at java.util.TimerThread.mainLoop(Timer.java:552)
    at java.util.TimerThread.run(Timer.java:505)


"Signal Dispatcher" Id=4 RUNNABLE


"Finalizer" Id=3 WAITING on java.lang.ref.ReferenceQueue$Lock@63910810
    at java.lang.Object.wait(Native Method)
    -  waiting on java.lang.ref.ReferenceQueue$Lock@63910810
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
    at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)


"Reference Handler" Id=2 WAITING on java.lang.ref.Reference$Lock@4449972c
    at java.lang.Object.wait(Native Method)
    -  waiting on java.lang.ref.Reference$Lock@4449972c
    at java.lang.Object.wait(Object.java:502)
    at java.lang.ref.Reference.tryHandlePending(Reference.java:191)
    at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153)



Stacktrace:
    at net.minecraft.server.v1_8_R3.ThreadWatchdog.run(SourceFile:59)
    at java.lang.Thread.run(Thread.java:745)

onEnable code：

public static void createTable(){
        if(isConnected()){
            try {
                String tablename = "Test";
                String request = "Spielername VARCHAR(100), Testvalue VARCHAR(100)
                con.createStatement().executeUpdate("CREATE TABLE IF NOT EXISTS "+tablename+" ("+request+")");
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

没有例外......服务器只停止加载

1 个答案:

答案 0 :(得分：0)

您没有粘贴异常，只粘贴了堆栈跟踪。

可能有多个原因：

  1. 您需要正确的权限
  2. 表测试已存在
  3. 也许sql执行者想要像这个`Testvalue`
    4. 这样的column_names
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