Spring 整合 Hibernate 註解方式
阿新 • • 發佈:2018-12-10
在上一篇文章中,我們建立一個簡單的Maven專案結構,並展示如何使用 Spring 和 Hibernate 框架在 MySQL資料庫進行資料處理工作(插入,選擇,更新和刪除)。在本文章中,還是學習如何使用 Spring 和 Hibernate 做同樣的事情,這一次我們使用註解方式。
1. Article模型用註解來儲存庫存資料。
@Entity @Table(name = "article") public class Article { private int id; private String title; private String content; public Article() { super(); } public Article(int id, String title, String content) { super(); this.id = id; this.title = title; this.content = content; } @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "id", unique = true, nullable = false) public int getId() { return id; } public void setId(int id) { this.id = id; } @Column(name = "title", nullable = false, length = 100) public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } @Column(name = "content", nullable = false, length = 100) public String getContent() { return content; } public void setContent(String content) { this.content = content; } @Override public String toString() { return "Article [id=" + id + ", title=" + title + ", content=" + content + "]"; } }
2. Article資料訪問物件
Article DAO介面和實現。在上一篇文章中,DAO類是直接擴充套件“HibernateDaoSupport“。但註釋方式不可能做到這一點,因為沒有辦法從DAO類會話到工廠bean自動裝配。解決方法是建立一個方法自動裝配會話工廠。如下:
@Transactional @Repository("articleDao") public class ArticleDaoImpl extends HibernateDaoSupport implements ArticleDao { /** * 由於使用的是spring的annotation注入,HibernateDaoSupport不能注入sessionFactiry和hibernateTemplemet。 */ @Resource public void setMySessionFactory(SessionFactory sessionFactory){ super.setSessionFactory(sessionFactory); } public void insert(Article article) { getHibernateTemplate().save(article); } public void update(Article article) { getHibernateTemplate().update(article); } public void delete(Article article) { getHibernateTemplate().delete(article); } public List<Article> getArticles() { //from 類名(Article),注意大小寫 return (List<Article>) getHibernateTemplate().find("from Article"); } public Article getArticleById(int id) { List articles = getHibernateTemplate().find("from Article where id = ?", id); return (Article) articles.get(0); } }
3. Article業務物件
@Service("articleService") public class ArticleServiceImpl implements ArticleService { private ArticleDao articleDao; @Autowired public void setArticleDao(ArticleDao articleDao) { this.articleDao = articleDao; } public void save(Article article) { articleDao.insert(article); } public void update(Article article) { articleDao.update(article); } public void remove(Article article) { articleDao.delete(article); } public List<Article> findArticles() { return articleDao.getArticles(); } public Article findArticleById(int id) { return articleDao.getArticleById(id); } }
4. 資源配置,修改Hibernate.cfg.xml,Spring-Bean.xml和Spring-Datasource.xml如下:
<hibernate-configuration>
<session-factory>
<!-- 配置Hibernate的基本屬性 -->
<!-- 1.資料來源配置到IOC容器中 -->
<!-- 2.關聯的.hbm.xml也在IOC容器配置SessionFactory例項 -->
<!-- 3.配置Hibernate的基本屬性:方言,SQL顯示及格式化,生成資料表的策略以及二級快取 -->
<property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
<property name="hibernate.show_sql">true</property>
<property name="hbm2ddl.auto">update</property>
<!-- <mapping resource="Article.hbm.xml"/> -->
<mapping class="com.angelia.sh.model.Article"/>
</session-factory>
</hibernate-configuration>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!-- Auto scan the components -->
<context:component-scan base-package="com.angelia.sh" />
</beans>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<value>database.properties</value>
</property>
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<!-- 注入datasource,給sessionfactoryBean內setdatasource提供資料來源 -->
<property name="dataSource" ref="dataSource" />
<!-- 載入hibernate配置檔案 -->
<property name="configLocation" value="Hibernate.cfg.xml"></property>
</bean>
<!-- 配置Spring宣告式事務 -->
<bean id="txManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="txManager" />
</beans>
5. 執行測試類,結果和上一篇文章一樣
程式碼下載連結: https://pan.baidu.com/s/1RhusIDwlUVW-r9NvF-9Mnw 密碼: k3yn