我正在尝试为我的 Minecraft 服务器编写商店插件,但每当有人执行 /purchase 命令时,我都会收到错误消息。
这是错误:
2012-07-03 04:27:28 [严重] com.mysql.jdbc.MysqlDataTruncation:数据截断:截断不正确的 DOUBLE 值:',3' 2012-07-03 04:27:28 [严重] 在 com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3591) 2012-07-03 04:27:28 [严重] 在 com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3525) 2012-07-03 04:27:28 [严重] 在 com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1986) 2012-07-03 04:27:28 [严重] 在 com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2140) 2012-07-03 04:27:28 [严重] 在 com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2620) 2012-07-03 04:27:28 [严重] 在 com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1662) 2012-07-03 04:27:28 [严重] 在 com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1581) 2012-07-03 04:27:28 [严重] 在 com.Chipmunk9998.Cod.CodCommandExecutor.onCommand(CodCommandExecutor.java:1421) 2012-07-03 04:27:28 [严重] 在 org.bukkit.command.PluginCommand.execute(PluginCommand.java:40) 2012-07-03 04:27:28 [严重] 在 org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:166) 2012-07-03 04:27:28 [严重] 在 org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:479) 2012-07-03 04:27:28 [严重] 在 com.Chipmunk9998.Cod.CodCommandExecutor.onCommand(CodCommandExecutor.java:1443) 2012-07-03 04:27:28 [严重] 在 org.bukkit.command.PluginCommand.execute(PluginCommand.java:40) 2012-07-03 04:27:28 [严重] 在 org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:166) 2012-07-03 04:27:28 [严重] 在 org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:479) 2012-07-03 04:27:28 [严重] 在 net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:821) 2012-07-03 04:27:28 [严重] 在 net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:781) 2012-07-03 04:27:28 [严重] 在 net.minecraft.server.NetServerHandler.a(NetServerHandler.java:764) 2012-07-03 04:27:28 [严重] 在 net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:34) 2012-07-03 04:27:28 [严重] 在 net.minecraft.server.NetworkManager.b(NetworkManager.java:229) 2012-07-03 04:27:28 [严重] 在 net.minecraft.server.NetServerHandler.a(NetServerHandler.java:113) 2012-07-03 04:27:28 [严重] 在 net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78) 2012-07-03 04:27:28 [严重] 在 net.minecraft.server.MinecraftServer.w(MinecraftServer.java:567) 2012-07-03 04:27:28 [严重] 在 net.minecraft.server.MinecraftServer.run(MinecraftServer.java:459) 2012-07-03 04:27:28 [严重] 在 net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
这是我的代码:
if (cmdsender == null) {
File weaponFile = new File(plugin.getDataFolder(), "weapons.yml");
FileConfiguration weaponData = YamlConfiguration.loadConfiguration(weaponFile);
String sql = "UPDATE account_info SET Money = Money - "
+ weaponData.getString(args[0] + "." + args[1] + ".Price")
+ " WHERE Username = '" + args[2] + "'";
try {
plugin.st.executeUpdate(sql);
} catch (SQLException e) {
e.printStackTrace();
}
sql = "UPDATE account_info SET Bought_" + args[0] + " = Bought_" + args[0]
+ " + ," + args[1] + " WHERE Username = '" + args[2] + "'";
try {
plugin.st.executeUpdate(sql);
} catch (SQLException e) {
e.printStackTrace();
}
plugin.getServer().getPlayer(args[2]).sendMessage(
"You have successfully bought the "
+ weaponData.getString(args[0] + "." + args[1] + ".Name") + "."
);
return true;
}
我试着用谷歌搜索它,但找不到任何有用的东西。