使用SMM框架开发企业级应用-----mybatis和spring整合

Posted 2020-11-30 BinaryStar(浩瀚)

tags:

篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了使用SMM框架开发企业级应用-----mybatis和spring整合相关的知识，希望对你有一定的参考价值。

注解式

　　首先导入依赖

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.32</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
    <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>1.7.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/log4j/log4j -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.6</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.2</version>
    </dependency>

entity实体类：

public class IAccount implements Serializable {
    private String accountid;       //卡号
    private String accountname;       //所属人姓名
    private double balance;    //卡内余额

    public String getAccountid() {
        return accountid;
    }

    public void setAccountid(String accountid) {
        this.accountid = accountid;
    }

    public String getAccountname() {
        return accountname;
    }

    public void setAccountname(String accountname) {
        this.accountname = accountname;
    }

    public double getBalance() {
        return balance;
    }

    public void setBalance(double balance) {
        this.balance = balance;
    }
}

　　Dao接口层

@Repository
public interface IAccountDao {
    public List<IAccount> getAllAccount();
}

Dao.xml小配置文件：

<?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">
<!--小配置根节点 namespace代表命名空间-->
<mapper namespace="com.mybatis_spring.dao.IAccountDao">
    <select id="getAllAccount" resultType="IAccount">
        select * from accounts
    </select>
</mapper>

Service业务接口层：

public interface IAccountService {
    public List<IAccount> getAllAccount();
}

ServiceImpl业务接口实现层:

@Service("iAccountService")

public class IAccountServiceImpl implements IAccountService {

    @Resource
    private IAccountDao iAccountDao;
    @Override
    public List<IAccount> getAllAccount() {
        return iAccountDao.getAllAccount();
    }
}

jdbc.properties文件：

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

applicationContext.xml文件：

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
       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/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 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
    
    
    
    <!--扫描注解-->
    <context:component-scan base-package="com.mybatis_spring"/>
    <!--加载配置文件-->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!--配置数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    <!--配置SqlSessionFactoryBean-->
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--加载Mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
    <!--扫描dao层-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.mybatis_spring.dao.IAccountDao"/>
    </bean>
  <!--

   0&lt;!&ndash;注入Dao层&ndash;&gt;
    <bean id="iAccountDao" class="org.mybatis.spring.mapper.MapperFactoryBean">
        <property name="mapperInterface" value="com.mybatis_spring.dao.IAccountDao"/>
        <property name="sqlSessionFactory" ref="sqlSessionFactoryBean"/>
    </bean>
    &lt;!&ndash;&lt;!&ndash;Service层&ndash;&gt;&ndash;&gt;
    <bean id="iAccountService" class="com.mybatis_spring.service.Impl.IAccountServiceImpl">
        <property name="iAccountDao" ref="iAccountDao"/>
    </bean>-->

</beans>

测试:

public class IAccountTest {
    public static void main(String[] args) {
        ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
        IAccountService iBankService = (IAccountService)ctx.getBean("iAccountService");
        List<IAccount> iAccounts = iBankService.getAllAccount();
        for(IAccount iAccount:iAccounts){
            System.out.println(iAccount.getAccountname());
        }
    }
}

注解式

entity实体类：

public class IAccount implements Serializable {
    private String accountid;       //卡号
    private String accountname;       //所属人姓名
    private double balance;    //卡内余额

    public String getAccountid() {
        return accountid;
    }

    public void setAccountid(String accountid) {
        this.accountid = accountid;
    }

    public String getAccountname() {
        return accountname;
    }

    public void setAccountname(String accountname) {
        this.accountname = accountname;
    }

    public double getBalance() {
        return balance;
    }

    public void setBalance(double balance) {
        this.balance = balance;
    }
}

Dao层接口类：

public interface IAccountDao {
    public List<IAccount> getAllAccount();
}

　Dao层小配置文件：

<?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">
<!--小配置根节点 namespace代表命名空间-->
<mapper namespace="com.mybatis_spring.dao.IAccountDao">
    <select id="getAllAccount" resultType="IAccount">
        select * from accounts
    </select>
</mapper>

Service接口类：

public interface IAccountService {
    public List<IAccount> getAllAccount();
}

　　Service接口实现类：

public class IAccountServiceImpl implements IAccountService {
    @Resource
    private IAccountDao iAccountDao;
    @Override
    public List<IAccount> getAllAccount() {
        return iAccountDao.getAllAccount();
    }
}

applicationContext.xml文件：

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
       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/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 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
    
    
    
    <!--扫描注解-->
    <context:component-scan base-package="com.mybatis_spring"/>
    <!--加载配置文件-->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!--配置数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    <!--配置SqlSessionFactoryBean-->
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--加载Mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
    <!--扫描dao层-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.mybatis_spring.dao.IAccountDao"/>
    </bean>
  <!--

   0&lt;!&ndash;注入Dao层&ndash;&gt;
    <bean id="iAccountDao" class="org.mybatis.spring.mapper.MapperFactoryBean">
        <property name="mapperInterface" value="com.mybatis_spring.dao.IAccountDao"/>
        <property name="sqlSessionFactory" ref="sqlSessionFactoryBean"/>
    </bean>
    &lt;!&ndash;&lt;!&ndash;Service层&ndash;&gt;&ndash;&gt;
    <bean id="iAccountService" class="com.mybatis_spring.service.Impl.IAccountServiceImpl">
        <property name="iAccountDao" ref="iAccountDao"/>
    </bean>-->

</beans>

　测试：

public class IAccountTest {
    public static void main(String[] args) {
        ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
        IAccountService iBankService = (IAccountService)ctx.getBean("iAccountService");
        List<IAccount> iAccounts = iBankService.getAllAccount();
        for(IAccount iAccount:iAccounts){
            System.out.println(iAccount.getAccountname());
        }
    }
}

以上是关于使用SMM框架开发企业级应用-----mybatis和spring整合的主要内容，如果未能解决你的问题，请参考以下文章

使用SMM框架开发企业级应用-----初始Mybatis的模糊查询以及自动映射

使用SMM框架开发企业级应用-----基础配置

使用SMM框架开发企业级应用-----面试题

使用SMM框架开发企业级应用-----关联查询

使用SMM框架开发企业级应用-----Spring简介即Spring Ioc