SSM框架整合步骤详解

Posted 2022-11-26 格子衫111

tags:

篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了SSM框架整合步骤详解相关的知识，希望对你有一定的参考价值。

1.1 需求和步骤分析

需求
使用ssm框架完成对 account 表的增删改查操作。

步骤分析

1.2 环境搭建

1）准备数据库和表记录

CREATE TABLE `account` ( 
	`id` int(11) NOT NULL AUTO_INCREMENT, 
	`name` varchar(32) DEFAULT NULL, 
	`money` double DEFAULT NULL, 
	PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;


insert into `account`(`id`,`name`,`money`) values (1,'tom',1000), (2,'jerry',1000);

2）创建web项目

创建步骤可参考这篇文章：https://blog.csdn.net/u012660464/article/details/126652568?spm=1001.2014.3001.5501

1.3 编写mybatis在ssm环境中可以单独使用

1）相关坐标

<!--mybatis坐标-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.15</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.1</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>

2）Account实体

public class Account 

    private Integer id;
    private String name;
    private Double money;

    public Account() 
    

    public Account(int id, String name, double money) 
        this.id =id;
        this.name = name;
        this.money = money;
    

    public Account(String name, double money) 
        this.name = name;
        this.money = money;
    

    @Override
    public String toString() 
        return "Account" +
                "id=" + id +
                ", name='" + name + '\\'' +
                ", money=" + money +
                '';
    

    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 getMoney() 
        return money;
    

    public void setMoney(Double money) 
        this.money = money;

3）AccountDao接口

public interface AccountDao 

    /*
        查询所有账户
     */
    public List<Account> findAll();

    void save(Account account);

    Account findById(Integer id);

    void update(Account account);

    void deleteBatch(Integer[] ids);

4）AccountDao.xml映射

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.zwt.dao.AccountDao">

    <!--查询所有账户-->
    <select id="findAll" resultType="account">
        select * from account
    </select>

    <!-- 添加账户  void save(Account account);-->
    <insert id="save" parameterType="account">
        insert into account(name,money)  values(#name,#money)
    </insert>

    <!--根据ID查询账户信息   Account findById(Integer id);-->
    <select id="findById" parameterType="int" resultType="account">
        select * from account where id = #id
    </select>

    <!--更新账户-->
    <update id="update" parameterType="account">
        update account set name = #name,money = #money where id = #id
    </update>

    <!--批量删除 void deleteBatch(Integer[] ids);  id in(1,2)-->
    <delete id="deleteBatch" parameterType="int">
        delete from account
        <where>
            <foreach collection="array" open="id in(" close=")" separator="," item="id">
                #id
            </foreach>
        </where>
    </delete>

</mapper>

注：xml 包名及结构需要和 java 文件一致

5）mybatis核心配置文件

jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///test
jdbc.username=root
jdbc.password=zhangwt

注：一般 resourse 资源目录下，数据库信息需根据自身情况调整

SqlMapConfig.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
    
    <!--加载properties-->
    <properties resource="jdbc.properties"/>

    <!--类型别名配置-->
    <typeAliases> <package name="com.zwt.domain"/> </typeAliases>

    <!--环境配置-->
    <environments default="dev">
        
        <!--使用MySQL环境-->
        <environment id="dev">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="$jdbc.driver"/>
                <property name="url" value="$jdbc.url"/>
                <property name="username" value="$jdbc.username"/> 
                <property name="password" value="$jdbc.password"/> 
            </dataSource> </environment> </environments> 
    
    <!--加载映射--> 
    <mappers> 
        <package name="com.zwt.dao"/> 
    </mappers> 
    
</configuration>

注：一般 resourse 资源目录下

6）测试代码

public class MybatisTest 

    @Test
    public void  testMybatis() throws IOException 

        InputStream resourceAsStream = Resources.getResourceAsStream("SqlMapConfig.xml");

        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);

        SqlSession sqlSession = sqlSessionFactory.openSession();

        AccountDao mapper = sqlSession.getMapper(AccountDao.class);

        List<Account> all = mapper.findAll();

        for (Account account : all) 
            System.out.println(account);
        

        sqlSession.close();

当前项目结构如下：

运行测试类，可以发现mybatis单独配置成功

1.4 编写spring在ssm环境中可以单独使用

1）相关坐标

  <!--spring坐标-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.1.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.13</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.1.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.1.5.RELEASE</version>
        </dependency>

2）AccountService接口

public interface AccountService 


    public List<Account> findAll();

    void save(Account account);

    Account findById(Integer id);

    void update(Account account);

    void deleteBatch(Integer[] ids);

3）AccountServiceImpl实现

@Service
public class AccountServiceImpl implements AccountService 

    /*
        测试spring在ssm环境中的单独使用
     */
    public List<Account> findAll() 
        System.out.println("findAll执行了....");
        return null;
    

    public void save(Account account) 

    

    public Account findById(Integer id) 
        return null;
    

    public void update(Account account) 

    

    public void deleteBatch(Integer[] ids)

4）spring核心配置文件

applicationContext.xml

<?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: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.xsd
       	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.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">


    <!--配置IOC相关操作:开启注解扫描-->
    <context:component-scan base-package="com.zwt.service"></context:component-scan>

</beans>

5）测试代码

//替换运行器，指定当前Junit的环境为Spring环境
@RunWith(SpringJUnit4ClassRunner.class)
//加载核心配置文件
@ContextConfiguration("classpath:applicationContext.xml")
public class SpringTest 

    @Autowired
    private AccountService accountService;

    @Test
    public void testSpring()

        List<Account> all = accountService.findAll();
        for (Account account : all) 
            System.out.println(account);

运行

至此，Spring单独配置完成

1.5 spring整合mybatis

1）整合思想

将mybatis接口代理对象的创建权交给spring管理，我们就可以把dao的代理对象注入到service中，此时也就完成了spring与mybatis的整合了。

2）导入整合包

  <!--mybatis整合spring坐标-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>

3）spring配置文件管理mybatis

注意：此时可以将mybatis主配置文件 SqlMapConfig.xml 删除。
applicationContext.xml

<?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: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.xsd
       	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.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">


    <!--配置IOC相关操作:开启注解扫描-->
    <context:component-scan base-package="com.zwt.service"></context:component-scan>

    <!--spring整合mybatis开始...................-->
    <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder>

    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="$jdbc.driver"/>
        <property 2022新版图文详解SpringBoot整合SSM框架(附源码)
 2022新版图文详解IDEA整合SSM框架(附源码)
 CSDN大V保姆级教程：图文详解IDEA整合SSM框架(附源码)
 SSM框架整合基础心得（有详细步骤）
 SSM三大框架整合配置详解
 SpringMVC详解------SSM三大框架整合之登录功能实现