Spring和Hibernate的整合

Myth丶恋晨 2021-07-24 16:00 365阅读 0赞

**一 web配置**

<?xml version="1.0" encoding="GBK"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns="http://xmlns.jcp.org/xml/ns/javaee"
        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
        http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
        version="3.1">
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener
            </listener-class>
        </listener>
        <filter>
            <filter-name>struts2</filter-name>
            <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
        </filter>
        <filter-mapping>
            <filter-name>struts2</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    </web-app>

**二 applicationContext.xml**

<?xml version="1.0" encoding="GBK"?>
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns="http://www.springframework.org/schema/beans"
        xmlns:p="http://www.springframework.org/schema/p"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xmlns:aop="http://www.springframework.org/schema/aop"
        xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-4.0.xsd">
        
        <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
            destroy-method="close"
            p:driverClass="com.mysql.jdbc.Driver"
            p:jdbcUrl="jdbc:mysql://localhost/spring"
            p:user="root"
            p:password="32147"
            p:maxPoolSize="40"
            p:minPoolSize="2"
            p:initialPoolSize="2"
            p:maxIdleTime="30"/>
        
        <bean id="sessionFactory"
            class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"
            p:dataSource-ref="dataSource">
            
            <property name="annotatedClasses">
                <list>
                    
                    <value>org.crazyit.booksys.domain.Book</value>
                </list>
            </property>
            
            <property name="hibernateProperties">
                <props>
                    
                    <prop key="hibernate.dialect">
                        org.hibernate.dialect.MySQL5InnoDBDialect</prop>
                    
                    <prop key="hibernate.hbm2ddl.auto">update</prop>
                    <prop key="hibernate.show_sql">true</prop>
                    <prop key="hibernate.format_sql">true</prop>                
                </props>
            </property>
        </bean>
            
        <bean id="bookService" class="org.crazyit.booksys.service.impl.BookServiceImpl"
            p:bookDao-ref="bookDao"/>
                
        <bean id="bookDao" class="org.crazyit.booksys.dao.impl.BookDaoHibernate4"
            p:sessionFactory-ref="sessionFactory"/>
        
        
        
        
        <bean id="transactionManager"
            class="org.springframework.orm.hibernate4.HibernateTransactionManager"
            p:sessionFactory-ref="sessionFactory"/>
    
    
    
    <tx:advice id="txAdvice"
        transaction-manager="transactionManager">
        
        <tx:attributes>
            
            <tx:method name="get*" read-only="true"/>
            
            <tx:method name="*" isolation="DEFAULT"
                propagation="REQUIRED" timeout="5"/>
        </tx:attributes>
    </tx:advice>
    
    <aop:config>
        
        <aop:pointcut id="myPointcut" expression="bean(bookService)"/>
        
        <aop:advisor advice-ref="txAdvice"
            pointcut-ref="myPointcut"/>
    </aop:config>
        
    </beans>

**三 Struts配置**

<?xml version="1.0" encoding="GBK"?>
    
    <!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
        "http://struts.apache.org/dtds/struts-2.3.dtd">
    <struts>
        
        <constant name="struts.i18n.encoding" value="GBK"/>
        <constant name="struts.enable.DynamicMethodInvocation" value="false" />
        <constant name="struts.devMode" value="true"/>    
        <package name="lee" extends="struts-default">
            
            <action name="addBook" class="org.crazyit.booksys.action.BookAction"
                method="add">
                
                <result type="chain">listBooks</result>
                
                <result name="error">/WEB-INF/content/bookForm.jsp</result>
            </action>
            <action name="listBooks" class="org.crazyit.booksys.action.BookAction"
                method="list">
                <result>/WEB-INF/content/listBooks.jsp</result>
            </action>
            <action name="deleteBook" class="org.crazyit.booksys.action.BookAction"
                method="delete">
                <result type="chain">listBooks</result>
            </action>        
    
    
            
            <action name="*">
                <result>/WEB-INF/content/{1}.jsp</result>
            </action>
        </package>
    </struts>

**四 视图**

1 bookForm.jsp

<%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
    <%@taglib prefix="s" uri="/struts-tags"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>添加图书</title>
    </head>
    <body>
    <h3>添加图书</h3>
    <s:form action="addBook">
        <s:textfield name="book.name" label="书名"/>
        <s:textfield name="book.price" label="价格"/>
        <s:textfield name="book.author" label="作者"/>
        <tr align="center">
            <td colspan="2">
            <s:submit value="添加" theme="simple"/>
            <s:reset value="重设" theme="simple"/>
            </td>
        </tr>
    </s:form>
    </body>
    </html>

2 listBooks.jsp

<%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
    <%@taglib prefix="s" uri="/struts-tags"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>全部图书</title>
    </head>
    <body>
    <h3>全部图书</h3>
    <table width="640" border="1">
        <s:iterator value="books" var="b">
            <tr>
                <td><s:property value="name"/></td>
                <td><s:property value="price"/></td>
                <td><s:property value="author"/></td>
                <td><a href="${pageContext.request.contextPath}/deleteBook?id=${b.id}">删除</a></td>
            </tr>
        </s:iterator>
    </table>
    </body>
    </html>

**五 domain**

package org.crazyit.booksys.domain;
    
    
    import javax.persistence.*;
    
    @Entity
    @Table(name="book_inf")
    public class Book
    {
        @Id @Column(name="book_id")
        @GeneratedValue(strategy=GenerationType.IDENTITY)
        private Integer id;
        @Column(name="book_name")
        private String name;
        private double price;
        private String author;
        public Integer getId()
        {
            return id;
        }
        public void setId(Integer id)
        {
            this.id = id;
        }
        public String getName()
        {
            return name;
        }
        public void setName(String name)
        {
            this.name = name;
        }
        public double getPrice()
        {
            return price;
        }
        public void setPrice(double price)
        {
            this.price = price;
        }
        public String getAuthor()
        {
            return author;
        }
        public void setAuthor(String author)
        {
            this.author = author;
        }
    }

**六 action**

package org.crazyit.booksys.action;
    
    
    import java.util.List;
    
    
    import org.crazyit.booksys.domain.Book;
    import org.crazyit.booksys.service.BookService;
    
    
    import com.opensymphony.xwork2.ActionSupport;
    
    public class BookAction extends ActionSupport
    {
        private BookService bookService;
        // 依赖注入BookService组件必须的setter方法。
        // 该方法的方法名要与BookService的配置id对应
        public void setBookService(BookService bookService)
        {
            this.bookService = bookService;
        }
        private Book book;
        private List<Book> books;
        private int id;
        public Book getBook()
        {
            return book;
        }
        public void setBook(Book book)
        {
            this.book = book;
        }
        
        public List<Book> getBooks()
        {
            return books;
        }
        public void setBooks(List<Book> books)
        {
            this.books = books;
        }
        
        public int getId()
        {
            return id;
        }
        public void setId(int id)
        {
            this.id = id;
        }
        // 处理添加图书的add()方法
        public String add()
        {
            // 调用业务逻辑组件的addBook()方法来处理用户请求        
            int result = bookService.addBook(book);
            if(result > 0)
            {
                addActionMessage("恭喜您，图书添加成功！");
                return SUCCESS;
            }
            addActionError("图书添加失败，请重新输入！");
            return ERROR;
        }
        public String list()
        {
            setBooks(bookService.getAllBooks());
            return SUCCESS;
        }
        public String delete()
        {
            bookService.deleteBook(id);
            return SUCCESS;
        }    
    }

**七 service**

1 BookService.java

package org.crazyit.booksys.service;
    
    
    import java.util.List;
    
    
    import org.crazyit.booksys.domain.Book;
    
    
    public interface BookService
    {
        // 添加图书
        int addBook(Book book);
    
        List<Book> getAllBooks();
        
        void deleteBook(int id);
    }

2 BookServiceImpl.java

package org.crazyit.booksys.service.impl;
    
    
    import java.util.List;
    
    
    import org.crazyit.booksys.dao.BookDao;
    import org.crazyit.booksys.domain.Book;
    import org.crazyit.booksys.service.BookService;
    
    public class BookServiceImpl implements BookService
    {
        private BookDao bookDao;
        
        public void setBookDao(BookDao bookDao)
        {
            this.bookDao = bookDao;
        }
    
    
        @Override
        public int addBook(Book book)
        {
            return (Integer) bookDao.save(book);
        }
    
    
        @Override
        public List<Book> getAllBooks()
        {
            return bookDao.findAll(Book.class);
        }
    
    
        @Override
        public void deleteBook(int id)
        {
            bookDao.delete(Book.class, id);
        }
    }

**八 dao**

BaseDao.java

package org.crazyit.common.dao;
    
    import java.util.List;
    import java.io.Serializable;
    
    public interface BaseDao<T>
    {
        // 根据ID加载实体
        T get(Class<T> entityClazz , Serializable id);
        // 保存实体
        Serializable save(T entity);
        // 更新实体
        void update(T entity);
        // 删除实体
        void delete(T entity);
        // 根据ID删除实体
        void delete(Class<T> entityClazz , Serializable id);
        // 获取所有实体
        List<T> findAll(Class<T> entityClazz);
        // 获取实体总数
        long findCount(Class<T> entityClazz);
    }

BaseDaoHibernate3.java

package org.crazyit.common.dao.impl;
    
    
    import java.io.Serializable;
    import java.util.List;
    
    
    import org.crazyit.common.dao.BaseDao;
    import org.hibernate.*;
    import org.springframework.orm.hibernate4.support.HibernateDaoSupport;
    import org.springframework.orm.hibernate4.HibernateCallback;
    
    public class BaseDaoHibernate3<T> extends HibernateDaoSupport
        implements BaseDao<T>
    {
        // 根据ID加载实体
        public T get(Class<T> entityClazz, Serializable id)
        {
            return getHibernateTemplate().get(entityClazz, id);
        }
    
    
        // 保存实体
        public Serializable save(T entity)
        {
            return getHibernateTemplate().save(entity);
        }
    
    
        // 更新实体
        public void update(T entity)
        {
            getHibernateTemplate().saveOrUpdate(entity);
        }
    
    
        // 删除实体
        public void delete(T entity)
        {
            getHibernateTemplate().delete(entity);
        }
    
    
        // 根据ID删除实体
        public void delete(Class<T> entityClazz, Serializable id)
        {
            delete(get(entityClazz , id));
        }
    
    
        @Override
        @SuppressWarnings("unchecked")
        public List<T> findAll(Class<T> entityClazz)
        {
            return (List<T>)getHibernateTemplate().find("select en from "
                + entityClazz.getSimpleName() + " en");
        }
    
    
        @Override
        @SuppressWarnings("unchecked")
        public long findCount(Class<T> entityClazz)
        {
            List<Long> list = (List<Long>)getHibernateTemplate().find(
                "select count(*) from " + entityClazz.getSimpleName() + " en");
            return list.get(0);
        }
        /**
         * 使用hql 语句进行分页查询操作
         * @param hql 需要查询的hql语句
         * @param pageNo 查询第pageNo页的记录
         * @param pageSize 每页需要显示的记录数
         * @return 当前页的所有记录
         */
        @SuppressWarnings("unchecked")
        protected List<T> findByPage(final String hql,
            final int pageNo, final int pageSize)
        {
            // 通过一个HibernateCallback对象来执行查询
            List<T> list = getHibernateTemplate()
                .execute(new HibernateCallback<List<T>>()
            {
                // 实现HibernateCallback接口必须实现的方法
                public List<T> doInHibernate(Session session)
                {
                    // 执行Hibernate分页查询
                    List<T> result = session.createQuery(hql)
                        .setFirstResult((pageNo - 1) * pageSize)
                        .setMaxResults(pageSize)
                        .list();
                    return result;
                }
            });
            return list;
        }
    
    
        /**
         * 使用hql 语句进行分页查询操作
         * @param hql 需要查询的hql语句
         * @param pageNo 查询第pageNo页的记录
         * @param pageSize 每页需要显示的记录数
         * @param params 如果hql带占位符参数，params用于传入占位符参数
         * @return 当前页的所有记录
         */
        @SuppressWarnings("unchecked")
        protected List<T> findByPage(final String hql , final int pageNo,
            final int pageSize , final  Object... params)
        {
            // 通过一个HibernateCallback对象来执行查询
            List<T> list = getHibernateTemplate()
                .execute(new HibernateCallback<List<T>>()
            {
                // 实现HibernateCallback接口必须实现的方法
                public List<T> doInHibernate(Session session)
                {
                    // 执行Hibernate分页查询
                    Query query = session.createQuery(hql);
                    // 为包含占位符的HQL语句设置参数
                    for(int i = 0 , len = params.length ; i < len ; i++)
                    {
                        query.setParameter(i + "" , params[i]);
                    }
                    List<T> result = query.setFirstResult((pageNo - 1) * pageSize)
                        .setMaxResults(pageSize)
                        .list();
                    return result;
                }
            });
            return list;
        }
    }

BaseDaoHibernate4.java

package org.crazyit.common.dao.impl;
    
    
    import org.hibernate.*;
    
    
    import java.util.List;
    import java.io.Serializable;
    
    
    import org.crazyit.common.dao.*;
    
    public class BaseDaoHibernate4<T> implements BaseDao<T>
    {
        // DAO组件进行持久化操作底层依赖的SessionFactory组件
        private SessionFactory sessionFactory;
        // 依赖注入SessionFactory所需的setter方法
        public void setSessionFactory(SessionFactory sessionFactory)
        {
            this.sessionFactory = sessionFactory;
        }
        public SessionFactory getSessionFactory()
        {
            return this.sessionFactory;
        }
        // 根据ID加载实体
        @SuppressWarnings("unchecked")
        public T get(Class<T> entityClazz , Serializable id)
        {
            return (T)getSessionFactory().getCurrentSession()
                .get(entityClazz , id);
        }
        // 保存实体
        public Serializable save(T entity)
        {
            return getSessionFactory().getCurrentSession()
                .save(entity);
        }
        // 更新实体
        public void update(T entity)
        {
            getSessionFactory().getCurrentSession().saveOrUpdate(entity);
        }
        // 删除实体
        public void delete(T entity)
        {
            getSessionFactory().getCurrentSession().delete(entity);
        }
        // 根据ID删除实体
        public void delete(Class<T> entityClazz , Serializable id)
        {
            getSessionFactory().getCurrentSession()
                .createQuery("delete " + entityClazz.getSimpleName()
                    + " en where en.id = ?0")
                .setParameter("0" , id)
                .executeUpdate();
        }
        // 获取所有实体
        public List<T> findAll(Class<T> entityClazz)
        {
            return find("select en from "
                + entityClazz.getSimpleName() + " en");
        }
        // 获取实体总数
        
        public long findCount(Class<T> entityClazz)
        {
            List<?> l = find("select count(*) from "
                + entityClazz.getSimpleName());
            // 返回查询得到的实体总数
            if (l != null && l.size() == 1 )
            {
                return (Long)l.get(0);
            }
            return 0;
        }
    
    
        // 根据HQL语句查询实体
        @SuppressWarnings("unchecked")
        protected List<T> find(String hql)
        {
            return (List<T>)getSessionFactory().getCurrentSession()
                .createQuery(hql)
                .list();
        }
        // 根据带占位符参数HQL语句查询实体
        @SuppressWarnings("unchecked")
        protected List<T> find(String hql , Object... params)
        {
            // 创建查询
            Query query = getSessionFactory().getCurrentSession()
                .createQuery(hql);
            // 为包含占位符的HQL语句设置参数
            for(int i = 0 , len = params.length ; i < len ; i++)
            {
                query.setParameter(i + "" , params[i]);
            }
            return (List<T>)query.list();
        }
        /**
         * 使用hql 语句进行分页查询操作
         * @param hql 需要查询的hql语句
         * @param pageNo 查询第pageNo页的记录
         * @param pageSize 每页需要显示的记录数
         * @return 当前页的所有记录
         */
        @SuppressWarnings("unchecked")
        protected List<T> findByPage(String hql,
             int pageNo, int pageSize)
        {
            // 创建查询
            return getSessionFactory().getCurrentSession()
                .createQuery(hql)
                // 执行分页
                .setFirstResult((pageNo - 1) * pageSize)
                .setMaxResults(pageSize)
                .list();
        }
        /**
         * 使用hql 语句进行分页查询操作
         * @param hql 需要查询的hql语句
         * @param params 如果hql带占位符参数，params用于传入占位符参数
         * @param pageNo 查询第pageNo页的记录
         * @param pageSize 每页需要显示的记录数
         * @return 当前页的所有记录
         */
        @SuppressWarnings("unchecked")
        protected List<T> findByPage(String hql , int pageNo, int pageSize
            , Object... params)
        {
            // 创建查询
            Query query = getSessionFactory().getCurrentSession()
                .createQuery(hql);
            // 为包含占位符的HQL语句设置参数
            for(int i = 0 , len = params.length ; i < len ; i++)
            {
                query.setParameter(i + "" , params[i]);
            }
            // 执行分页，并返回查询结果
            return query.setFirstResult((pageNo - 1) * pageSize)
                .setMaxResults(pageSize)
                .list();
        }
    }

BookDao.java

package org.crazyit.booksys.dao;
    
    
    import java.util.List;
    
    
    import org.crazyit.booksys.domain.Book;
    import org.crazyit.common.dao.BaseDao;
    
    public interface BookDao extends BaseDao<Book>
    {
    }

BookDaoHibernate4.java

package org.crazyit.booksys.dao.impl;
    
    
    import java.util.List;
    
    
    import org.crazyit.booksys.dao.BookDao;
    import org.crazyit.booksys.domain.Book;
    import org.crazyit.common.dao.impl.BaseDaoHibernate3;
    import org.crazyit.common.dao.impl.BaseDaoHibernate4;
    
    
    public class BookDaoHibernate4 extends BaseDaoHibernate4<Book>
        implements BookDao
    {
    }

**九 测试**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/686c75a827ff424091d9b4843680a640.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1]: /images/20210724/2df733a657dc4863b9155c1c4059be72.png