问题描述

hibernate运行总是出错 求解答

一直出错困扰我两天了 求大家帮忙解决一下 谢谢了
一月 18 2016 11:10:26 下午 org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.0.7.Final}
一月 18 2016 11:10:26 下午 org.hibernate.cfg.Environment
INFO: HHH000206: hibernate.properties not found
一月 18 2016 11:10:26 下午 org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
一月 18 2016 11:10:26 下午 org.hibernate.boot.jaxb.internal.stax.LocalXmlResourceResolver resolveEntity
WARN: HHH90000012: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/hibernate-configuration. Use namespace http://www.hibernate.org/dtd/hibernate-configuration instead. Support for obsolete DTD/XSD namespaces may be removed at any time.
一月 18 2016 11:10:26 下午 org.hibernate.annotations.common.reflection.java.JavaReflectionManager
INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
一月 18 2016 11:10:27 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
一月 18 2016 11:10:27 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost/hibernate]
一月 18 2016 11:10:27 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {user=root password=****}
一月 18 2016 11:10:27 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
一月 18 2016 11:10:27 下午 org.hibernate.engine.jdbc.connections.internal.PooledConnections
INFO: HHH000115: Hibernate connection pool size: 1 (min=1)
一月 18 2016 11:10:27 下午 org.hibernate.dialect.Dialect
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
一月 18 2016 11:10:27 下午 org.hibernate.engine.jdbc.env.internal.LobCreatorBuilderImpl useContextualLobCreation
INFO: HHH000423: Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4
一月 18 2016 11:10:28 下午 org.hibernate.tool.hbm2ddl.SchemaExport execute
INFO: HHH000227: Running hbm2ddl schema export
一月 18 2016 11:10:28 下午 org.hibernate.tool.hbm2ddl.SchemaExport execute
INFO: HHH000230: Schema export complete
org.hibernate.MappingException: Unknown entity: com.hi.Students
at org.hibernate.internal.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:781)
at org.hibernate.internal.SessionImpl.getEntityPersister(SessionImpl.java:1520)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:100)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:192)
at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:38)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:177)
at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:32)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:73)
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:679)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:671)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:666)
at com.cat.StudentsTest.testSaveStudents(StudentsTest.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
一月 18 2016 11:10:28 下午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl stop
INFO: HHH10001008: Cleaning up connection pool [jdbc:mysql://localhost/hibernate]

hibernate.cfg.xml

<?xml version=""1.0"" encoding=""UTF-8""?>
<!DOCTYPE hibernate-configuration PUBLIC
-//Hibernate/Hibernate Configuration DTD 3.0//EN""
http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"">

com.mysql.jdbc.Driver
jdbc:mysql://localhost/hibernate
root
mona
org.hibernate.dialect.MySQLDialect
1

    <property name=""show_sql"">true</property>    <property name=""format_sql"">true</property>    <property name=""hbm2ddl.auto"">create</property>    <mapping resource=""com/hi/Students.hbm.xml""/></session-factory>

Students.hbm.xml

<?xml version=""1.0""?>
<!DOCTYPE hibernate-mapping PUBLIC ""-//Hibernate/Hibernate Mapping DTD 3.0//EN""
http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"">

Student.java

package com.hi;

//学生类
public class Students {
private int id;
private String name;
private int age;

public Students() {}public Students(int id String name int age) {    this.id = id;    this.name = name;    this.age = age;}public int getId() {    return id;}public void setId(int id) {    this.id = id;}public String getName() {    return name;}public void setName(String name) {    this.name = name;}public int getAge() {    return age;}public void setAge(int age) {    this.age = age;}@Overridepublic String toString() {    return ""Students [id="" + id + "" name="" + name + "" age="" + age + ""]"";}

}

StudentsTest.java

package com.cat;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.hi.Students;

public class StudentsTest {

private SessionFactory sessionFactory;private Session session;private Transaction transaction;@Beforepublic void init(){    Configuration config = new Configuration().configure();    ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(config.getProperties()).build();    sessionFactory = config.buildSessionFactory(serviceRegistry);    session = sessionFactory.openSession();    transaction = session.beginTransaction();}@Afterpublic void destory(){    transaction.commit();    session.close();    sessionFactory.close();}@Testpublic void testSaveStudents(){    Students s = new Students(1张三丰"" 15);    session.save(s);}

}

解决方案

日志不全，这里没有任何错误信息，再找找

解决方案二：
org.hibernate.MappingException: Unknown entity: com.hi.Students
这个就可以明显的看到错误了，你的bean类和数据库的字段没对应上，仔细检查下字段名，大小写、类型

解决方案三：
截图

解决方案四：
javabean和数据库的字段对不上，看下你写的那个Students类和你配置里的是否一样

解决方案五：
映射异常，未知的实体类，，这里看不到你的映射文件怎么写的