今天完成的事情：

1.完成了任务 25 测试关闭数据库后进行数据库操作会突然出现一下两种情况

第一种 使用原生 JDBC 

第二种 使用 Hibernate

明天计划的事情：

1.做任务总结

2.我想等到任务2的时候再系统的学习 Spring MVC

遇到的问题：

1.因为将 sessionFactory.openSession() 放到循环里报错

@Test
public void testAddLots() {
       String[] xing = {"赵", "钱", "孙", "李", "周", "吴", "郑", "王"};
    String[] ming = {"梦洁", "雅静", "韵寒", "莉姿", "沛玲", "欣妍", "歆瑶", "凌菲", "靖瑶", "瑾萱"};
    Session session = sessionFactory.openSession();
    Random random = new Random(47);
    for (int i = 0; i < 1000000; i++) {
               int xi = random.nextInt(8);
        int mi = random.nextInt(10);
        Transaction transactional = session.beginTransaction();
        User user = new User();
        user.setName(xing[xi] + ming[mi]);
        session.save(user);
        transactional.commit();
    }

}

所以我又想换了个方式 sessionFactory.getCurrentSession() 这里设置的是 thread 也应该是没有错误的啊

<prop key="current_session_context_class">thread</prop>

但还是报错

org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread

at org.springframework.orm.hibernate5.SpringSessionContext.currentSession(SpringSessionContext.java:132)

at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:692)

at com.draper.dao.HibernateTest.testAddLots(HibernateTest.java:54)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:497)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)

at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)

at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)

at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:254)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)

at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)

at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)

at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)

at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)

at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)

at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:497)

at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

不理解为什么

收获：