JDBC for MySQL驱动版本问题
对于低版本（3.1.8）的mysql驱动，其没有对int类型的字段做强制的非空检测，但是5.1版本为了安全增加了强制非空检测。这样当项目jdbc驱动包升级到5.1.16后会报如下错误：
com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'XXXXXXXXXXX' cannot be nullat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)at java.lang.reflect.Constructor.newInstance(Constructor.java:513)at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)at com.mysql.jdbc.Util.getInstance(Util.java:386)at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1039)at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3597)at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3529)at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1990)at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2151)at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2619)at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1698)at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1617)at org.apache.tomcat.dbcp.dbcp.DelegatingStatement.executeUpdate(DelegatingStatement.java:228)at org.apache.tomcat.dbcp.dbcp.DelegatingStatement.executeUpdate(DelegatingStatement.java:228)at adultadmin.util.db.DbOperation.executeUpdate(DbOperation.java:237)at adultadmin.action.balance.ImportOrderBalanceAction.execute(ImportOrderBalanceAction.java:266)at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1192)at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:430)at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at adultadmin.util.filter.UserControlFilter.doFilter(UserControlFilter.java:109)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at adultadmin.util.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:139)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)at java.lang.Thread.run(Thread.java:662)
