Configuration configuration = new Configuration().configure(); ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder() .applySettings(configuration.getProperties()).build(); SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);
Hibernate5创建SessionFactory新的方式
StandardServiceRegistry standardRegistry = new StandardServiceRegistryBuilder() .configure().build(); Metadata metadata = new MetadataSources(standardRegistry) .getMetadataBuilder() .applyImplicitNamingStrategy( ImplicitNamingStrategyJpaCompliantImpl.INSTANCE) .build(); SessionFactory sessionFactory = metadata.getSessionFactoryBuilder().build();
Hibernate5不再显式的使用Configuration类代表配置信息，而是新增了一个Metadata类来处理，SessionFactory的创建从Metadata实例中获得一个创建者，然后调用改创建者的build()方法获得SessionFactory。这是典型的创建者模式。
若依旧在Hibernate5中使用Hibernate4创建SessionFactory的方式，代码编译不会报错，但在运行时会抛出一个 QuerySyntaxException异常： XXX is not mapped。
这个异常信息似乎告诉我们是因为User类没有映射到数据库的表中，然而我认真检查了所有配置信息，并没有发现配错的情况。于是我把Maven依赖的Hibernate5降级到Hibernate4目前最后一个版本4.3.11，QuerySyntaxException异常没有出现，User类也正常映射到了数据库表中。我一开始还以为是Hibernate5有bug，查看文档之后才发现原来是SessionFactory的创建方式改了。
详细异常信息如下：
org.hibernate.hql.internal.ast.QuerySyntaxException: User is not mapped [from User as u where u.name = :name and u.password = :password] at org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException(QuerySyntaxException.java:79) at org.hibernate.QueryException.wrapWithQueryString(QueryException.java:103) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:218) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:142) at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:115) at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:76) at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:150) at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:302) at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:240) at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1907) at org.jisonami.service.DataRepository.queryAll(DataRepository.java:84) at org.jisonami.service.UserService.validate(UserService.java:28) at org.jisonami.controller.account.AccountController.login(AccountController.java:40) 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:483) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:178) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:444) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:432) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870) at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1502) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1458) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745)
hibernate.cfg.xml配置信息，这个与hibernate4没有变化
<?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">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:@192.168.75.130:1521:orcl</property>
<property name="hibernate.connection.username">jison</property>
<property name="hibernate.connection.password">jison</property>
<property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property>
<!-- 自动创建需要的数据库表 -->
<property name="hibernate.hbm2ddl.auto">update</property>
<!-- 在控制台打印sql语句 -->
<property name="hibernate.show_sql">true</property>
<mapping class="org.jisonami.entity.User" />
</session-factory>
</hibernate-configuration>
而User类的配置使用的是注解的方式，这个也与Hibernate4没有变化
package org.jisonami.entity;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.annotations.GenericGenerator;
@Entity
@Table(name="t_user")
public class User implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
public User(){}
@Id
@GeneratedValue(generator="usergenerator")
@GenericGenerator(name="usergenerator", strategy="uuid")
private String id;
private String name;
private String password;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
更详细的代码见我的Github项目： https://github.com/jisonami/Jisonami2
目前我的个人项目还比较粗糙，以后会好的。