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please try againinclude error,path:/comp/breadcrumb/nav?compId=breadcrumb_nav-1516757051256 cause:org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.RuntimeException: org.springframework.transaction.TransactionSystemException: Could not commit JDBC transaction; nested exception is java.sql.SQLException: Unknown error%!(EXTRA string=invalid protocol version: 255) org.springframework.transaction.TransactionSystemException: Could not commit JDBC transaction; nested exception is java.sql.SQLException: Unknown error%!(EXTRA string=invalid protocol version: 255) at org.springframework.jdbc.datasource.DataSourceTransactionManager.doCommit(DataSourceTransactionManager.java:275) at cn.ce.ebiz.framework.persistence.mybatis.DataSourceTransactionManagerExt.doCommit(DataSourceTransactionManagerExt.java:55) at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:761) at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:730) at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:483) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:290) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) at com.sun.proxy.$Proxy79.findPages(Unknown Source) at com.alibaba.dubbo.common.bytecode.Wrapper215.invokeMethod(Wrapper215.java) at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:45) at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:71) at com.alibaba.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:48) at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:52) at cn.ce.ebiz.framework.remoting.DubboContextFilter.invoke(DubboContextFilter.java:220) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:61) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:41) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:74) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:77) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:71) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:131) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:37) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:37) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:98) at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:96) at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:168) at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:50) at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:79) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Caused by: java.sql.SQLException: Unknown error%!(EXTRA string=invalid protocol version: 255) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3978) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3914) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2530) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2683) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2491) at com.mysql.jdbc.ConnectionImpl.commit(ConnectionImpl.java:1555) at com.mchange.v2.c3p0.impl.NewProxyConnection.commit(NewProxyConnection.java:803) at org.springframework.jdbc.datasource.DataSourceTransactionManager.doCommit(DataSourceTransactionManager.java:272) ... 42 more

How to choose the dining hall table

  The dining hall table is a common dining furniture in the canteens and corporate canteens of various schools. The material of the dining table is not single. For example, stainless steel, marble, etc., all have their own uses. Of course, when choosing, the size of the dining table. It is very important that the right size will be more conducive to the consumer's dining experience.
 
  The size of the dining hall table is a key factor in determining the practicality and comfort of the dining table, especially the height of the dining table and chair. This includes the height of the dining table, the height of the dining chair, and the height difference between the two. The height of the dining chair should be moderate, not only for the extension of the human leg, but also for the foot; the height of the table and stool should be convenient for the guests to eat, generally slightly higher than the height of the hutong. The human seat is reduced in length from the neck and upper arm.
 
  The price of the dining hall table is very low. This is a common phenomenon, and in the dining table and chair market, even the table and chair brands of many well-known restaurants are vulgar. A product is usually priced, its price is more than twice the price of a false price, and then a discount of 5%, 6 discounts, consumers see this phenomenon is naturally an opportunity not to be missed, must pay for it. In fact, the actual price of the product may be much higher than the normal price. As for the so-called time-limited discount, there is no such thing, a limited time limit for three days a day, the purchase discount after one week is still the same, or just a different name to continue the discount. Such false high-priced, low-price promotions are very popular in the market, and almost all small restaurant tables and chairs brands have set such price traps, so they have been widely criticized.
 
  The stainless steel dining hall table is a combination of a cutting saw, a decorative edge seal, and a component assembly when producing stainless steel sheets. The appearance quality of stainless steel tables and chairs depends mainly on the quality of the saw blade, the cutting edge, the quality of the surface decoration and the quality of the plate. The flatness, verticality and angle of the sheet are necessary for the quality control of the sawing. Generally speaking, the cutting process of the panel saw is within 0.01 mm per meter to meet the precision requirements of the panel after cutting, the edge contour is flat, the angle is good, and the board tilt phenomenon does not occur after the furniture is manufactured.
 
  When choosing a table or chair, the following points should be noted: the length of the table is usually determined by the width of the shoulder plus the psychological size required for people to get along. The students are relatively fixed in age, small in span and relatively small in shoulder width. The average person's shoulder width is between 320 and 340 mm, plus the psychological correction of the public space, plus the range of motion of the arm during meals, usually the width of the table. The table in the school cafeteria is two people side by side, so the length of the table should be between 990 and 1410 mm, in line with the standard.
 
  The key to choosing a canteen table is quality. On the one hand, the design is ergonomic, it feels comfortable to sit on the dining chair as much as possible, and the arm can be placed naturally on the table. It depends on the firmness of the table and chair, especially the dining chair due to frequent use, should pay attention to the material and splicing method of the chair. Generally speaking, the reason of the traditional 榫榫 structure is relatively strong. Then use eucalyptus, beech and other wooden chairs to be stronger. In addition to feeling that the chair will not be shaken and unstable, it is also judged by checking the leg of the chair for scars and crack repairs. The legs and maple parts of the dining chair cannot be used together with the scars and cracks on the material, otherwise it will be seriously affected. Service life.