我在Hibernate工作一段时间后遇到了一些困难，试图从我的数据库中访问数据。我搜索了很多错误并尝试了很多东西，只是不知道还有什么我不能做的，我尝试了关于我的pom依赖关系，但没有任何效果。这是：
主要课程：
public class Main {
private static SessionFactory factory;
public static void main(String[] args)
{
// User u = new User();
//
// UserDAO ud=new UserDAO(new Configuration().configure().buildSessionFactory());
// ud.listUsers();
// factory = ((AnnotationConfiguration) new AnnotationConfiguration().
// configure()).
// //addPackage("com.xyz") //add package if used.
// addAnnotatedClass(User.class).
// buildSessionFactory();
factory = new Configuration().configure().buildSessionFactory();
UserDAO ud=new UserDAO(factory);
ud.listUsers();
}
}
listUsers方法：
public void listUsers( ){
Session session = factory.openSession();
Transaction tx = null;
try{
tx = session.beginTransaction();
List users = session.createQuery("FROM user").list();
for (Iterator iterator =
users.iterator(); iterator.hasNext();){
User employee = (User) iterator.next();
System.out.print("First Name: " + employee.getUsername());
System.out.print("Last Name: " + employee.getPassword());
System.out.println("Address: " + employee.getAddress());
}
tx.commit();
}catch (HibernateException e) {
if (tx!=null) tx.rollback();
e.printStackTrace();
}finally {
session.close();
}
}
配置文件：
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</property>
<property name="hibernate.connection.driver_class">
com.mysql.jdbc.Driver
</property>
<!-- Assume test is the database name -->
<property name="hibernate.connection.url">
jdbc:mysql://localhost:3306/licenta
</property>
<property name="hibernate.connection.username">
root
</property>
<property name="hibernate.connection.password">root</property>
<mapping resource="user.hbm.xml" />
</session-factory>
</hibernate-configuration>
用户映射：
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="models.User" table="user">
<meta attribute="class-description">
This class contains the user detail.
</meta>
<id name="id" type="int" column="id">
<generator class="native" />
</id>
<property name="username" column="username" type="string" />
<property name="password" column="password" type="string" />
<property name="address" column="address" type="string" />
<property name="email" column="email" type="string" />
<property name="phone" column="phone" type="string" />
<property name="year" column="year" type="int" />
<property name="type" column="type" type="string" />
</class>
</hibernate-mapping>
Pom文件：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.paul.licenta</groupId>
<artifactId>teachApp</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>teachApp</name>
<build>
<finalName>teachApp</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<inherited>true</inherited>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey</groupId>
<artifactId>jersey-bom</artifactId>
<version>${jersey.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
<!-- use the following artifactId if you don't need servlet 2.x compatibility -->
<!-- artifactId>jersey-container-servlet</artifactId -->
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-commons-annotations</artifactId>
<version>3.0.0.ga</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-annotations</artifactId>
<version>3.3.0.GA</version>
</dependency>
<dependency>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.10</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.10.Final</version>
</dependency>
<!-- for JPA, use hibernate-entitymanager instead of hibernate-core -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.10.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<!-- uncomment this to get JSON support
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-moxy</artifactId>
</dependency>
-->
</dependencies>
<properties>
<jersey.version>2.26-b03</jersey.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
</project>
错误：
Exception in thread "main" java.lang.NoSuchMethodError: org.hibernate.SessionFactory.openSession()Lorg/hibernate/classic/Session;
at dao.UserDAO.listUsers(UserDAO.java:58)
at Main.main(Main.java:31)
另外，如果你看一下，在main方法中，我有2个工厂对象实例，其中一个是注释的。如果我取消注释并评论第二个，它会给我带来同样的错误。
有什么建议吗？
Here is everything the console shows at running
从UserDAO类导入：
import java.util.Iterator;
import java.util.List;
import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import models.User;
import net.sf.ehcache.hibernate.HibernateUtil;
从主要类别进口：
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import dao.UserDAO;
import models.User;
答案 0 :(得分：1)
导入Session类错误，请使用 import org.hibernate.Session ，而不是 org.hibernate.classic.Session 。