Broadleaf Commerce 3.1.0 is Giving Error - spring

Question

We are using BroadleafCommerce 3.1.0. Prior to this , We are using 3.0.13. Everything was working fine in 3.0.13. We did all the required changes as per the Migration Notes present in BLC WebSite. After doing all, we can able to compile the WorkSpace. Deployment also successfull. While invoking MyCompany,And Admin we are getting following error :
==============================================>MYCOMPANY
java.lang.NullPointerException
at org.broadleafcommerce.common.web.BroadleafRequestCustomerResolverImpl.setCustomer(BroadleafRequestCustomerResolverImpl.java:62)
at org.broadleafcommerce.profile.web.core.CustomerState.setCustomer(CustomerState.java:52)
at org.broadleafcommerce.profile.web.core.security.CustomerStateRequestProcessor.process(CustomerStateRequestProcessor.java:134)
at org.broadleafcommerce.profile.web.core.security.CustomerStateFilter.doFilter(CustomerStateFilter.java:55)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
.......
======================================>ADMIN
Error while inserting fetched product id:12357968
org.springframework.dao.DataIntegrityViolationException: Cannot add or update a child row: a foreign key constraint fails (`broadleaf`.`blc_product`, CONSTRAINT `FK5B95B7C96D386535` FOREIGN KEY (`DEFAULT_SKU_ID`) REFERENCES `blc_sku` (`SKU_ID`)); SQL [n/a]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (`broadleaf`.`blc_product`, CONSTRAINT `FK5B95B7C96D386535` FOREIGN KEY (`DEFAULT_SKU_ID`) REFERENCES `blc_sku` (`SKU_ID`))
at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:643)
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:105)
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:517)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:755)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:724)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:475)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:270)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy161.saveSku(Unknown Source)
Caused by: org.hibernate.exception.ConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (`broadleaf`.`blc_product`, CONSTRAINT `FK5B95B7C96D386535` FOREIGN KEY (`DEFAULT_SKU_ID`) REFERENCES `blc_sku` (`SKU_ID`))
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:74)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:129)
at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
at com.sun.proxy.$Proxy447.executeUpdate(Unknown Source)
at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:56)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3028)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3469)
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:88)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:362)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:354)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:275)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:326)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1213)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:402)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175)
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:75)
at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:513)
... 109 more

Answer 1

For the admin issue, drop the constraint from the blc_product table for default_sku_id. I verified that in 3.1, this constraint is no longer created as part of the install.
For the site issue, double check your web.xml and applicationContext.xml against a new 3.1 demo install to see if you can spot any differences. If you can recreate with a clean 3.1 demo install then open an issue in GitHub. Otherwise, you might try adding breakpoints in your code and in similar spots in a clean 3.1 demo install to see if you can determine the difference.
Edit: The site issue is being tracked separately here: Getting error while Giving Request to MyCompany in Broadleaf Commerce
Brian,
Disclaimer : I work at Broadleaf Commerce