Eclipse+Maven下Spring与Hibernate整合简单实例（小白入门）

Maven管理Spring与Hibernate整合简单实例

源码地址：https://github.com/1663727338/SSH-Study

1.创建Maven工程

如下图选择quickstart

输入maven工程项目名称

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2.创建工程文件夹src/main/resources,用来存放spring、hibernate所需的配置文件

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3.在pom.xml中配置spring依赖

<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>4.0.0modelVersion>

    <groupId>com.lgd.studygroupId>
    <artifactId>springhibernatetestartifactId>
    <version>0.0.1-SNAPSHOTversion>
    <packaging>jarpackaging>

    <name>springhibernatetestname>
    <url>http://maven.apache.orgurl>

    <properties>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <spring.version>4.3.0.RELEASEspring.version>
    properties>

    <dependencies>
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>3.8.1version>
            <scope>testscope>
        dependency>

        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-coreartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-beansartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-contextartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-ormartifactId>
            <version>${spring.version}version>
        dependency>
    dependencies>
project>                      

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4.Mysql建立user表
id为主键，拥有auto_increment属性

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5.创建数据库表对应的实体类user

User.java文件内容如下

package com.lgd.study.springhibernatetest;
public class User {
    private Integer id;
    private String name;
    private Integer age;
    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 Integer getAge() {
        return age;
    }
    public void setAge(Integer age) {
        this.age = age;
    }
}

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6.配置hibernate依赖

pom.xml中添加

        <dependency>
            <groupId>org.hibernategroupId>
            <artifactId>hibernate-coreartifactId>
            <version>${hibernate.version}version>
        dependency>

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7.配置实体类与数据库表的映射文件user.hbm.xml

user.hbm.xmlweb文件内容如下

<hibernate-mapping package="com.lgd.study.springhibernatetest.App">
    <class name="User" table="user">
        <id name="id" column="id" type="java.lang.Integer">
            <generator class="native"/>
        id>

        <property name="name" column="name" type="java.lang.String">property>
        <property name="age" column="age"  type="java.lang.Integer">property>
    class>

hibernate-mapping>

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8.Mysql数据源配置

pom.xml增加c3p0、mysql的依赖

        <dependency>
            <groupId>org.hibernategroupId>
            <artifactId>hibernate-c3p0artifactId>
            <version>${hibernate.version}version>
        dependency>

        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>${mysql.version}version>
        dependency>

resources文件夹下新建数据库配置文件datasource.properties

文件内容如下，可根据具体环境自行配置

validationQuery=SELECT 1

mysql.driverClassName=com.mysql.jdbc.Driver
mysql.url=jdbc:mysql://localhost:3306/sshdb
mysql.username=lgd
mysql.password=P@ssw0rd

创建beans.xml文件并添加datasource的配置

文件内容如下

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
           http://www.springframework.org/schema/context
              http://www.springframework.org/schema/context/spring-context-4.2.xsd
">

    
    <context:property-placeholder location="datasource.properties" />

    
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
        destroy-method="close">
        
        <property name="driverClass" value="${mysql.driverClassName}">property>
        <property name="jdbcUrl" value="${mysql.url}">property>
        <property name="user" value="${mysql.username}">property>
        <property name="password" value="${mysql.password}">property>
        <property name="maxPoolSize" value="40">property>
        <property name="minPoolSize" value="1">property>
        <property name="initialPoolSize" value="1">property>
        <property name="maxIdleTime" value="20">property>
    bean> 
beans>

9.SessionFactory的配置

datasource.properties中增加如下配置

hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.hbm2ddl.auto=update
hibernate.show_sql=true
hibernate.format_sql=false

beans.xml中添加sessionFactory的配置

    
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="mappingResources">
            <list>
                <value>/user.hbm.xmlvalue>
            list>
        property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}prop>
                <prop key="hibernate.dialect">${hibernate.dialect}prop>
                <prop key="hibernate.show_sql">${hibernate.show_sql}prop>
                <prop key="hibernate.format_sql">${hibernate.format_sql}prop>
            props>
        property>
    bean>

10.测试类App实现

App.Java文件内容如下

package com.lgd.study.springhibernatetest;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class App {
    private static SessionFactory sessionFactory;

    public static void main(String[] args) {

        //加载bean
        new ClassPathXmlApplicationContext("beans.xml");

        //session
        Session session = sessionFactory.openSession();     
        User user = new User();
        user.setName("lgd");
        user.setAge(22);
        session.save(user);

        System.out.println("AppMain is done.");

    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }

    public static void setSessionFactory(SessionFactory sessionFactory) {
        App.sessionFactory = sessionFactory;
    }
}

在beans.xml中添加App对应bean

    <bean id="app" class="com.lgd.study.springhibernatetest.App" lazy-init="false">
        <property name="sessionFactory" ref="sessionFactory">property>
    bean>

11测试
运行App.java，在Mysql中可以看到有一条数据被添加成功

源码github地址见文开头

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