源代码如下
studentAction sa=new studentAction();
student st=new student();
st.setAge(1);
st.setId(1);
st.setName("t1");
Configuration cfg=new Configuration();
SessionFactory sf=cfg.configure().buildSessionFactory();
Session session=sf.openSession();
session.beginTransaction();
session.save(st);
session.getTransaction().commit();
session.close();
sf.close();错误提示
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.Test.main(Test.java:21)
Caused by: java.lang.NullPointerException
at org.slf4j.LoggerFactory.singleImplementationSanityCheck(LoggerFactory.java:192)
at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:113)
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:269)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:242)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:255)
at org.hibernate.cfg.Configuration.<clinit>(Configuration.java:152)
... 1 more
studentAction sa=new studentAction();
student st=new student();
st.setAge(1);
st.setId(1);
st.setName("t1");
Configuration cfg=new Configuration();
SessionFactory sf=cfg.configure().buildSessionFactory();
Session session=sf.openSession();
session.beginTransaction();
session.save(st);
session.getTransaction().commit();
session.close();
sf.close();错误提示
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.Test.main(Test.java:21)
Caused by: java.lang.NullPointerException
at org.slf4j.LoggerFactory.singleImplementationSanityCheck(LoggerFactory.java:192)
at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:113)
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:269)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:242)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:255)
at org.hibernate.cfg.Configuration.<clinit>(Configuration.java:152)
... 1 more
hibernate.cfg.xml 贴上来看看
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<!-- Generated by MyEclipse Hibernate Tools. -->
<hibernate-configuration>
<session-factory>
<property name="dialect">
org.hibernate.dialect.MySQLDialect
</property>
<property name="connection.url">
jdbc:mysql://localhost:3306/hibernate
</property>
<property name="connection.username">root</property>
<property name="connection.password">yttxdba</property>
<property name="connection.driver_class">
com.mysql.jdbc.Driver
</property>
<property name="myeclipse.connection.profile">
com.mysql.jdbc.Driver
</property>
<mapping resource="com/entity/Student.hbm.xml" />
<mapping class="com.entity.student"/>
</session-factory>
</hibernate-configuration>
SessionFactory sessionFactory = configuration.buildSessionFactory(); Session session = sessionFactory.openSession();
Transaction tx = session.beginTransaction();
User user = new User();
user.setName("ddd");
user.setPass("kkk");
session.save( user );
tx.commit();
session.close();
这周围代码是什么?