Spring + Hibernate整合-优快云博客

本文链接：https://blog.youkuaiyun.com/wenwenliuyunabcd/article/details/100703434

本文详细介绍了SSH（Spring + Hibernate + Struts）框架的整合过程，包括Maven工程配置、Spring容器配置、Hibernate配置及实体类映射，展示了如何通过DAO层、Service层实现数据的增删查改操作。

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maven工程依赖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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.liuyun</groupId>
    <artifactId>ssh</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>ssh Maven Webapp</name>
    <url>http://maven.apache.org</url>

    <properties>
        <spring-version>4.2.4.RELEASE</spring-version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring-version}</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.5</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.11.2</version>
        </dependency>
        <!-- 数据库驱动和数据源 -->

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>

        <!-- Hibernate -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.0.7.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-c3p0</artifactId>
            <version>5.0.7.Final</version>
        </dependency>

        <!-- serlvet和jsp编译需要 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>

    <build>
        <finalName>ssh</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

spring的容器配置beans.xml：

在这里插入代码片<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">


    <context:property-placeholder location="classpath:db.properties" />
    <!-- 扫描service,respositroy组件 -->
    <context:component-scan base-package="com.liuyun"></context:component-scan>
    <!-- 数据源 -->
<!--     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driverClass}"></property>
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean> -->
    
    <!-- sessionFactory (Spring接管) -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <!-- <property name="dataSource" ref="dataSource" /> -->
        <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
    </bean>

    <bean id="hibernateTemplate" class="org.springframework.orm.hibernate5.HibernateTemplate">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>

    <!--a. 事务管理类 -->
    <bean id="trans" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
        <!-- <property name="dataSource" ref="dataSource"></property> -->
    </bean>
    <!-- b. 定义事务规则 -->
    <tx:advice id="txAdvice" transaction-manager="trans">
        <tx:attributes>
            <tx:method name="save*" propagation="REQUIRED" />
            <tx:method name="update*" propagation="REQUIRED" />
            <tx:method name="delete*" propagation="REQUIRED" />
            <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
        </tx:attributes>
    </tx:advice>

    <!-- c. 定义事务入口（那些类的哪些方法参与事务） -->
    <aop:config>
        <aop:pointcut expression="execution(* com.liuyun.service.impl.*.*(..))" id="pt" />
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt" />
    </aop:config>
</beans>

Hibernate配置文件hibernate.cfig.xml：

<?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>
        <!-- 数据源 -->
        <property name="connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
        <!-- mysql数据库配置 -->
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hibernate</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">32147</property>

        <!-- 个性化配置 -->
        <property name="hibernate.show_sql">true</property>
        <property name="hibernate.format_sql">false</property>
        <property name="hibernate.hbm2ddl.auto">update</property>

        <!-- 把session和线程绑定，从而实现一个线程只有一个Session -->
        <!-- <property name="hibernate.current_session_context_class">thread</property> -->

        <!-- 映射文件 -->
        <mapping class="com.liuyun.domain.User" />
       <!--  <mapping resource="com/liuyun/domain/User.hbm.xml" /> -->
    </session-factory>
</hibernate-configuration>

db.properties:

jdbc.user=root
jdbc.password=32147
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/hibernate?useSSL=false
jdbc.driverClass=com.mysql.jdbc.Driver

实体类user.java:

package com.liuyun.domain;

import java.io.Serializable;

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

@Entity()
@Table(name = "user")
public class User implements Serializable {
    private static final long serialVersionUID = 7734464849457206326L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    private Long id;

    @Column(name = "name")
    private String name;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "User [id=" + id + ", name=" + name + "]";
    }
}

实体与数据库的映射文件User.hbm.xml：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC 
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.liuyun.domain">
    <class name="User" table="user">
        <id name="id" column="id">
            <generator class="native" />
        </id>
        <property name="name" column="name" />
    </class>
</hibernate-mapping>

持久层UserDaoImpl:

package com.liuyun.dao.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate5.HibernateTemplate;
import org.springframework.stereotype.Repository;

import com.liuyun.dao.IUserDao;
import com.liuyun.domain.User;

@Repository("userDao")
public class UserDaoImpl implements IUserDao {

    @Autowired
    private HibernateTemplate hibernateTemplate;

    @Override
    public int save(User user) {
        Long count = (Long) hibernateTemplate.save(user);
        return count.intValue();
    }

    @Override
    public void update(User user) {
        hibernateTemplate.update(user);
    }

    @Override
    public void deleteById(Long id) {
        User user = new User();
        user.setId(id);
        hibernateTemplate.delete(user);
    }

    @SuppressWarnings("unchecked")
    @Override
    public List<User> findAll() {

        List<User> users = (List<User>) hibernateTemplate.find("from User");
        return users;
    }

    @Override
    public User findById(Long id) {
        User user = hibernateTemplate.get(User.class, id);
        return user;
    }

    @SuppressWarnings("unchecked")
    @Override
    public User findByName(String name) {
        List<User> users = (List<User>) hibernateTemplate.find("from User where name=?", name);
        if (users == null || users.isEmpty()) {
            return null;
        } else {
            return users.get(0);
        }
    }
}

业务层UserServiceImpl :


package com.liuyun.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.liuyun.dao.IUserDao;
import com.liuyun.domain.User;
import com.liuyun.service.IUserService;

@Service("userService")
public class UserServiceImpl implements IUserService {

    @Autowired
    IUserDao userDao;

    @Override
    public int save(User user) {
        return userDao.save(user);
    }

    @Override
    public void update(Long id, User user) {
        user.setId(id);
        userDao.update(user);
    }

    @Override
    public void deleteById(Long id) {
        userDao.deleteById(id);
    }

    @Override
    public List<User> findAll() {
        return userDao.findAll();
    }

    @Override
    public User findById(Long id) {
        return userDao.findById(id);
    }

    @Override
    public User findByName(String name) {
        return userDao.findByName(name);
    }

}