1、decimal 字段异常

 修改为

2、连接超时

Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure
The last packet successfully received from the server was 1,068 milliseconds ago. The last packet sent successfully to the server was 1,068 milliseconds ago.at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)at java.lang.reflect.Constructor.newInstance(Constructor.java:423)at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:520)at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:700)at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:639)at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:987)at com.mysql.cj.NativeSession.execSQL(NativeSession.java:666)at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:930)... 18 common frames omitted
Caused by: java.net.SocketException: Socket closedat java.net.SocketInputStream.socketRead0(Native Method)at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)at java.net.SocketInputStream.read(SocketInputStream.java:171)at java.net.SocketInputStream.read(SocketInputStream.java:141)at com.mysql.cj.protocol.ReadAheadInputStream.fill(ReadAheadInputStream.java:107)at com.mysql.cj.protocol.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:150)at com.mysql.cj.protocol.ReadAheadInputStream.read(ReadAheadInputStream.java:180)at java.io.FilterInputStream.read(FilterInputStream.java:133)at com.mysql.cj.protocol.FullReadInputStream.readFully(FullReadInputStream.java:64)at com.mysql.cj.protocol.a.SimplePacketReader.readHeaderLocal(SimplePacketReader.java:81)at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63)at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:45)at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:52)at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:41)at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:54)at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44)at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:514)... 23 common frames omitted