大家帮我看一下hibernate哪里出错了，第一个应用都这么悲剧的弄不出来

Question

News.java的源代码:
package org.crazyit.app.domain;public class News {
private Integer id;
private String title;
private String content; public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
} public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
} public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
}
News.hbm.xml:
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE hibernate-mapping PUBLIC 
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"><!-- Generated 2010-11-9 18:15:04 by Hibernate Tools 3.3.0.GA -->
<hibernate-mapping>
<class name="org.crazyit.app.domain.News" table="NEWS">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="native" />
</id>
<property name="title" type="java.lang.String">
<column name="title" />
</property>
<property name="content" type="java.lang.String">
<column name="content" />
</property>
</class>
</hibernate-mapping>NewsManager.java源代码如下：
package lee;import org.crazyit.app.domain.News;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;public class NewsManager {

public static void main(String[] args)
throws Exception {
//实例化Configuration，
Configuration conf = new Configuration()
//下面方法默认加载hibernate.cfg.xml文件
.configure();
//以Configuration创建SessionFactory
SessionFactory sf = conf.buildSessionFactory();
//创建Session
Session sess = sf.openSession();
//开始事务
Transaction tx = sess.beginTransaction();
//创建消息实例
News n = new News();
//设置消息标题和消息内容
n.setTitle("疯狂Java联盟成立了");
n.setContent("疯狂Java联盟成立了，"
+ "网站地址http://www.crazyit.org");
//保存消息
sess.save(n);
//提交事务
tx.commit();
//关闭Session
sess.close();
sf.close();
}
}
hibernate.cfg.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">root</property>
<property name="hibernate.connection.url">jdbc:mysql://127.0.0.1:3306/hibernate</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>

        <property name="hibernate.format_sql">true</property>
<property name="hibernate.hbm2ddl.auto">update</property>        <property name="hibernate.c3p0.max_size">5</property>
<property name="hibernate.c3p0.min_size">1</property>
<property name="hibernate.c3p0.timeout">5000</property>
<property name="hibernate.c3p0.max_statements">100</property>
<property name="hibernate.c3p0.idle_test_period">3000</property>
<property name="hibernate.c3p0.acquire_increment">2</property>
<property name="hibernate.c3p0.validate">false</property>

<mapping resource="org/crazyit/app/domain/News.hbm.xml"/>
   
</session-factory>
</hibernate-configuration>
错误信息:
2012-8-13 16:25:23 com.mchange.v2.log.MLog <clinit>
信息: MLog clients using java 1.4+ standard logging.
2012-8-13 16:25:24 com.mchange.v2.c3p0.C3P0Registry banner
信息: Initializing c3p0-0.9.1 [built 16-January-2007 14:46:42; debug? true; trace: 10]
2012-8-13 16:25:24 com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource getPoolManager
信息: Initializing c3p0 pool... com.mchange.v2.c3p0.PoolBackedDataSource@55331a80 [ connectionPoolDataSource -> com.mchange.v2.c3p0.WrapperConnectionPoolDataSource@fc0a5cbb [ acquireIncrement -> 2, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, debugUnreturnedConnectionStackTraces -> false, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge0ys8p8miu6j1n1ucmn|102799c, idleConnectionTestPeriod -> 3000, initialPoolSize -> 1, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 5000, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 5, maxStatements -> 100, maxStatementsPerConnection -> 0, minPoolSize -> 1, nestedDataSource -> com.mchange.v2.c3p0.DriverManagerDataSource@fc1bc545 [ description -> null, driverClass -> null, factoryClassLocation -> null, identityToken -> 1hge0ys8p8miu6j1n1ucmn|1010058, jdbcUrl -> jdbc:mysql://127.0.0.1:3306/hibernate, properties -> {user=******, password=******} ], preferredTestQuery -> null, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false; userOverrides: {} ], dataSourceName -> null, factoryClassLocation -> null, identityToken -> 1hge0ys8p8miu6j1n1ucmn|476128, numHelperThreads -> 3 ]
Exception in thread "main" org.hibernate.exception.SQLGrammarException: could not insert: [org.crazyit.app.domain.News]
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:64)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2327)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2834)
at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:71)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:320)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:203)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:129)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:713)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:701)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:697)
at lee.NewsManager.main(NewsManager.java:30)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'hibernate.news' doesn't exist
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1052)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4096)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4028)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2490)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2651)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2683)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2144)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2444)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2362)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2347)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:105)
at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:94)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:57)
... 16 more

Answer 1

你贴出来的代码是没有问题的。你看你的问题是不是数据库jar包的问题，以及用户名啊等这些配置信息。
然后你在看一下你的数据库中是不是有这个表，我怀疑你没有建这个表，就试图往表里插入元组，导致问题

Answer 2

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'hibernate.news' doesn't exist
看看配置的 <mapping resource="org/crazyit/app/domain/News.hbm.xml"/>中配置的表名和类名是否正确 ，同时检查库中是否存在此表名的表?

Answer 3

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'hibernate.news' doesn't exist

Answer 4

看看hibernate配置文件，表news添加了吗？再看看数据库，是否有NEWS表。

Answer 5

Exception in thread "main" org.hibernate.exception.SQLGrammarException: could not insert: [org.crazyit.app.domain.News]Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'hibernate.news' doesn't exist你检查一下你的数据库news表是否存在