Question

我在Spring世界中相当新，我在疯狂尝试使用 HibernateTemplate 抽象支持类

在Spring应用程序中集成Hibernate

我有以下类来持久保存数据库表：

package org.andrea.myexample.HibernateOnSpring.entity;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name="person")
public class Person {

@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private int pid;

private String firstname;

private String lastname;

public int getPid() {
    return pid;
}

public void setPid(int pid) {
    this.pid = pid;
}

public String getFirstname() {
    return firstname;
}

public void setFirstname(String firstname) {
    this.firstname = firstname;
}

public String getLastname() {
    return lastname;
}

public void setLastname(String lastname) {
    this.lastname = lastname;
}
}

在它旁边，我创建了一个名为 PersonDAO 的接口，我只定义了我的CRUD方法。所以我通过名为 PersonDAOImpl 的类实现了这个接口，该类也扩展了Spring抽象类 HibernateTemplate ：

package org.andrea.myexample.HibernateOnSpring.dao;

import java.util.List;

import org.andrea.myexample.HibernateOnSpring.entity.Person;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

public class PersonDAOImpl extends HibernateDaoSupport implements PersonDAO{


public void addPerson(Person p) {
    getHibernateTemplate().saveOrUpdate(p);

}

public Person getById(int id) {
    // TODO Auto-generated method stub
    return null;
}

public List<Person> getPersonsList() {
    // TODO Auto-generated method stub
    return null;
}

public void delete(int id) {
    // TODO Auto-generated method stub

}

public void update(Person person) {
    // TODO Auto-generated method stub

}   

}

（目前我正在尝试仅实现addPerson（）方法）

然后我创建了一个主类来测试将新对象插入数据库表的操作：

package org.andrea.myexample.HibernateOnSpring;

import org.andrea.myexample.HibernateOnSpring.dao.PersonDAO;
import org.andrea.myexample.HibernateOnSpring.entity.Person;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MainApp {

public static void main(String[] args) {

    ApplicationContext context = new ClassPathXmlApplicationContext("Beans.xml");
    System.out.println("Contesto recuperato: " + context);

    Person persona1 = new Person();

    persona1.setFirstname("Pippo");
    persona1.setLastname("Blabla");

    System.out.println("Creato persona1: " + persona1);

    PersonDAO dao = (PersonDAO) context.getBean("personDAOImpl");

    System.out.println("Creato dao object: " + dao);

    dao.addPerson(persona1);

    System.out.println("persona1 salvata nel database");
}

}

正如您所见 PersonDAOImpl 类扩展了HibernateTemplate 所以我认为它必须包含sessionFactory的设置操作......

问题在于，当我尝试运行此MainApp类时，我获得以下异常：

Exception in thread "main" java.lang.NoSuchMethodError: org.hibernate.SessionFactory.openSession()Lorg/hibernate/classic/Session;
    at org.springframework.orm.hibernate3.SessionFactoryUtils.doGetSession(SessionFactoryUtils.java:323)
    at org.springframework.orm.hibernate3.SessionFactoryUtils.getSession(SessionFactoryUtils.java:235)
    at org.springframework.orm.hibernate3.HibernateTemplate.getSession(HibernateTemplate.java:457)
    at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:392)
    at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
    at org.springframework.orm.hibernate3.HibernateTemplate.saveOrUpdate(HibernateTemplate.java:737)
    at org.andrea.myexample.HibernateOnSpring.dao.PersonDAOImpl.addPerson(PersonDAOImpl.java:12)
    at org.andrea.myexample.HibernateOnSpring.MainApp.main(MainApp.java:26)

为什么我有这个问题？我怎么解决呢？

要完成，我还要插入包含我的依赖列表的 pom.xml ：

<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>org.andrea.myexample</groupId>
<artifactId>HibernateOnSpring</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>HibernateOnSpring</name>
<url>http://maven.apache.org</url>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

<dependencies>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>3.8.1</version>
        <scope>test</scope>
    </dependency>

    <!-- Dipendenze di Spring Framework -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>3.2.1.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>3.2.1.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>3.2.1.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
        <version>3.2.1.RELEASE</version>
    </dependency>


    <dependency>   <!-- Usata da Hibernate 4 per LocalSessionFactoryBean -->
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>3.2.0.RELEASE</version>
    </dependency>

    <!-- Dipendenze per AOP -->
    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib</artifactId>
        <version>2.2.2</version>
    </dependency>

    <!-- Dipendenze per Persistence Managment -->

    <dependency>    <!-- Apache BasicDataSource -->
        <groupId>commons-dbcp</groupId>
        <artifactId>commons-dbcp</artifactId>
        <version>1.4</version>
    </dependency>

    <dependency>    <!-- MySQL database driver -->
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.23</version>
    </dependency>

    <dependency>    <!-- Hibernate -->
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>4.1.9.Final</version>
    </dependency>



</dependencies>
</project>

Answer 1

您应该使用Springs Hibernate4支持

import org.springframework.orm.hibernate4.support.HibernateDaoSupport;

此处有更多详情： http://blog.springsource.org/2012/04/06/migrating-to-spring-3-1-and-hibernate-4-1/

Answer 2

由于Hibernate 4.x不再支持HibernateTemplate，而且我当前的项目充斥着使用HibernateTemplate，我选择创建并使用我自己的自定义HibernateTemplate }。

而不是扩展HibernateDaoSupport我只是在我的DAO中添加了getHibernateTemplate()方法。在我的自定义HibernateTemplate中，我然后使用org.hibernate.SessionFactory执行相同的操作。

使用HibernateTemplate的问题：java.lang.NoSuchMethodError：org.hibernate.SessionFactory.openSession（）Lorg / hibernate / classic / Session;

2 个答案: