大神求解，hibernate4.2.1的一个HelloWorld例子配置搞了两天
要毕业了，什么也不懂，最近想学三大框架，刚学完STUTRS2,昨天开始学hibernate,教程第一讲就弄了两天还停留在下面这个问题，急死人 了。教程上说的是hibernate3.2，但是我现在到官网下了个4.2的版本，实在是整天两天没成功运行 ，后面的教程就一直挡着了，这个是照着教程上看的写的实体类Student，package com.luhy.hibernate.model;
public class Student {
private int id;
private String name;
private int age;
public Student(){
}
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;
}
}
测试类：
package com.luhy.hibernate.test;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;
import com.luhy.hibernate.model.Student;
public class Test {
public static void main(String[] args) {
Student st = new Student();
st.setId(2);
st.setName("学生");
st.setAge(20);
Configuration cfg = new Configuration();
cfg.configure();
ServiceRegistry serviceRegistry =new ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry();
SessionFactory sf = cfg.configure().buildSessionFactory(serviceRegistry);
Session session = sf.openSession();
session.beginTransaction(); //事务开启
session.save(st); //保存对象
session.getTransaction().commit();
session.close();
sf.close();
}
}
Student.hbm.xml配置：
<?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">
<hibernate-mapping package="org.hibernate.tutorial.domain">
<class name="Student" table="student">
<id name="id" column="id"/>
<property name="name" column="name"/>
<property name="age" column="age"/>
</class>
</hibernate-mapping>
hibernate.cfg.xml配置：
<?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>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/hibernate</property>
<property name="connection.username">root</property>
<property name="connection.password">lu5896848</property>
<!-- JDBC connection pool (use the built-in) -->
<!-- <property name="connection.pool_size">1</property>-->
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>-->
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">update</property>-->
<mapping resource="com/luhy/hibernate/model/Student.hbm.xml"/>
</session-factory>
</hibernate-configuration>
工程目录，帮看下对应的JAR包是否齐全？
结果是，运行后出错，早上搞到晚上睡觉也弄不好，网上百度谷歌也找不出问题，网上对应的和我这版本的问题资料太少，错误代码如下：
2013-5-12 17:02:51 org.hibernate.annotations.common.Version <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.1.Final}
2013-5-12 17:02:51 org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.2.1.Final}
2013-5-12 17:02:51 org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
2013-5-12 17:02:51 org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
2013-5-12 17:02:51 org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
2013-5-12 17:02:51 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
Exception in thread "main" org.hibernate.MappingException: invalid configuration
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2028)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1945)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1924)
at com.luhy.hibernate.test.Test.main(Test.java:20)
Caused by: org.xml.sax.SAXParseException: The content of element type "session-factory" must match "(property*,mapping*,(class-cache|collection-cache)*,event*,listener*)".
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java:2017)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java:901)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2938)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.dom4j.io.SAXReader.read(SAXReader.java:465)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2025)
... 3 more
Hibernate helloworld Java 类 SQL --------------------编程问答-------------------- Caused by: org.xml.sax.SAXParseException
报这个错误表示xml文件解析错误，我看了一下，发现你的hibernate.hbm.xml文件有没删掉的注释符合哦，
23行和32行的结尾有“-->”，是不是删漏了？
去掉后，你再试试 --------------------编程问答--------------------
不好意思，写错了，是hibernate.cfg.xml文件 --------------------编程问答-------------------- 多谢，我是多官方文档复制配置文件下来修改的，两天都没发现原来这个地方自己不小心弄错了，修改后，也出现了新的错误，说我的映射文件不能解析，不知是什么问题
2013-5-12 17:45:45 org.hibernate.annotations.common.Version <clinit>--------------------编程问答-------------------- <hibernate-mapping package="org.hibernate.tutorial.domain">这里package写错了 --------------------编程问答--------------------
INFO: HCANN000001: Hibernate Commons Annotations {4.0.1.Final}
2013-5-12 17:45:45 org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.2.1.Final}
2013-5-12 17:45:45 org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
2013-5-12 17:45:45 org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
2013-5-12 17:45:45 org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
2013-5-12 17:45:45 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
2013-5-12 17:45:45 org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: com/luhy/hibernate/model/Student.hbm.xml
2013-5-12 17:45:45 org.hibernate.cfg.Configuration doConfigure
INFO: HHH000041: Configured SessionFactory: null
2013-5-12 17:45:45 org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
2013-5-12 17:45:45 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
2013-5-12 17:45:45 org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: com/luhy/hibernate/model/Student.hbm.xml
2013-5-12 17:45:45 org.hibernate.cfg.Configuration doConfigure
INFO: HHH000041: Configured SessionFactory: null
Exception in thread "main" org.hibernate.InvalidMappingException: Could not parse mapping document from resource com/luhy/hibernate/model/Student.hbm.xml
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3440)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXmlQueue(Configuration.java:3429)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3417)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1348)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1747)
at com.luhy.hibernate.test.Test.main(Test.java:22)
Caused by: org.hibernate.MappingException: class org.hibernate.tutorial.domain.Student not found while looking for property: id
at org.hibernate.internal.util.ReflectHelper.reflectedPropertyClass(ReflectHelper.java:232)
at org.hibernate.mapping.SimpleValue.setTypeUsingReflection(SimpleValue.java:324)
at org.hibernate.cfg.HbmBinder.bindSimpleId(HbmBinder.java:449)
at org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:382)
at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:322)
at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:173)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3437)
... 5 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.tutorial.domain.Student
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at org.hibernate.internal.util.ReflectHelper.classForName(ReflectHelper.java:192)
at org.hibernate.internal.util.ReflectHelper.reflectedPropertyClass(ReflectHelper.java:228)
... 11 more
+++
确实是报名写错了，应该使用所配置的类的包名com.luhy.hibernate.model --------------------编程问答-------------------- 唉，这两天前前后后我重新建立了这些配置文件，这里出错了都没发现，刚修改了过来了，修改为Student类所在的包全包了，但还继续出错，大神，你要帮帮下我，这两天弄得我有点想放弃了
2013-5-12 17:55:33 org.hibernate.cfg.Environment buildBytecodeProvider--------------------编程问答-------------------- 嗯，刚刚修改了，但还出错，错误代码在6楼，你可以再帮我看一下么 --------------------编程问答-------------------- mysql> desc student;
INFO: HHH000021: Bytecode provider name : javassist
2013-5-12 17:55:33 org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
2013-5-12 17:55:33 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
2013-5-12 17:55:33 org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: com/luhy/hibernate/model/Student.hbm.xml
2013-5-12 17:55:33 org.hibernate.cfg.Configuration doConfigure
INFO: HHH000041: Configured SessionFactory: null
2013-5-12 17:55:33 org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
2013-5-12 17:55:33 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
2013-5-12 17:55:33 org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: com/luhy/hibernate/model/Student.hbm.xml
2013-5-12 17:55:33 org.hibernate.cfg.Configuration doConfigure
INFO: HHH000041: Configured SessionFactory: null
2013-5-12 17:55:33 org.hibernate.cfg.Configuration$MappingsImpl addImport
INFO: HHH000071: Duplicate import: com.luhy.hibernate.model.Student -> com.luhy.hibernate.model.Student
2013-5-12 17:55:33 org.hibernate.cfg.Configuration$MappingsImpl addImport
INFO: HHH000071: Duplicate import: com.luhy.hibernate.model.Student -> Student
Exception in thread "main" org.hibernate.InvalidMappingException: Could not parse mapping document from resource com/luhy/hibernate/model/Student.hbm.xml
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3440)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXmlQueue(Configuration.java:3429)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3417)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1348)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1747)
at com.luhy.hibernate.test.Test.main(Test.java:22)
Caused by: org.hibernate.DuplicateMappingException: Duplicate class/entity mapping com.luhy.hibernate.model.Student
at org.hibernate.cfg.Configuration$MappingsImpl.addClass(Configuration.java:2592)
at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:174)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3437)
... 5 more
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | int(11) | NO | PRI | NULL | |
| name | varchar(20) | YES | | NULL | |
| age | int(11) | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
3 rows in set (0.01 sec)
这是我建立的表，表是没有问题的，可是上面的问题，，， --------------------编程问答-------------------- Duplicate import，配置重复导入的问题。
cfg.configure();执行一次就可以了，你的这句代码执行了两次，就出现这个问题了 --------------------编程问答-------------------- 唉，去掉重复的这个了，可以往表里插入条数据了，有点欣慰了。刚开始是照着教程上写的测试类，但教程上的一个方法在新版本里给废弃了，然后到网上找了解决办法，就把人家写的拿下来了，我刚刚测试了几次，是可以正常运行了，太感谢你了。但发现个小问题，应该是编码的问题，st.setName("aa");插入字母的时候这个字段是正常的，但插入的是中文时，表里这个字段值就是为空的了，请问下这种情况有什么简单的方便解决吗
--------------------编程问答--------------------
你是在数据库中查看数据的，还是在程序中使用查询语句的
--------------------编程问答--------------------
用命令查看的，应该是前者。mysql> select * from student;打问号的就是我想插入中文字符串时的结果，还有，刚你提到了是不是用程序查看，也想了解下用程序查看，也得设置正确编码才能正常查看的吗，不可以直接访问查看？ --------------------编程问答-------------------- 数据库中输入命令：set names GBK
+----+------+------+
| id | name | age |
+----+------+------+
| 2 | ?? | 20 |
| 3 | aa | 20 |
| 4 | aa | 20 |
+----+------+------+
3 rows in set (0.00 sec)
mysql>
然后再查询就可以了
程序中可能要加上useUnicode=true&characterEncoding=UTF-8
--------------------编程问答-------------------- 我把表修改为GBK了，也把数据库my.ini里的默认字符修改为GBK了，但我的myeclipse工程默认的也是用GKB，一插入中文就变成问号了 --------------------编程问答-------------------- 统一用UTF-8比较好，修改workspace的字符集
window -> Preferences -> General -> Workspace -> Text file encoding 选择字符集，如果没有可以直接输入。 --------------------编程问答-------------------- 也试过了，表和IDE都修改UTF8了也是哪样问题 --------------------编程问答-------------------- 修改完成后重启一下mysql试试。 --------------------编程问答-------------------- cfg.configure();
SessionFactory sf = cfg.configure().buildSessionFactory(serviceRegistry);
两个cfg.configure()重复了 --------------------编程问答-------------------- 学hibernate，就是学它的配置 --------------------编程问答-------------------- 你好，能不能帮我解释一下MYSQL的字符集，之前我把my.ini文件里的两个文件都修改为default-character-set=utf8，character-set-server=utf8，然后重新建了个表，结果发现表的字符还是latin1,我不是修改了默认字符编码了吗，为什么修改重启后也没有效果，然后我百度了下，发现挺复杂的，还有什么“MySQL的字符集问题主要是两个概念，一个是Character Sets，一个是Collations，前者是字符内容及编码，后者是对前者进行比较操作的一些规则。”的说法，我读了两次还是不能理解他们的区别，
show variables like '%collation%';这两个又是指哪，怎么这么多需要设置编码？ --------------------编程问答-------------------- 除 --------------------编程问答-------------------- lz，为什么我和你一样看着3.2的视频，用着4.2的包不会有问题，因为，看的不是照抄，而是要学方法，配置文件就去包里找，大体一样，mysqL的问题，直接下载一个客户端看得了，我之前也被搞死，客户端显示的编码又是一个问题。
+----------------------+-------------------+
| Variable_name | Value |
+----------------------+-------------------+
| collation_connection | latin1_swedish_ci |
| collation_database | utf8_general_ci |
| collation_server | utf8_general_ci |
+----------------------+-------------------+
3 rows in set (0.00 sec)
mysql> show variables like '%character%';
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | latin1 |
| character_set_connection | latin1 |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | latin1 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
补充：Java , Web 开发
