spring Mybatis集成

pom文件

<?xml version="1.0" encoding="UTF-8"?>
<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>4.0.0</modelVersion>

    <groupId>com.yujian</groupId>
    <artifactId>spring-mybatis-demo1</artifactId>
    <version>1.0-SNAPSHOT</version>
<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>5.1.3.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>5.1.3.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>5.1.3.RELEASE</version>
    </dependency>
    <!--spring连接jdbc-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>5.1.3.RELEASE</version>
    </dependency>
    <!--jdbc驱动-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.47</version>
    </dependency>
    <!--c3p0数据源，替代DBHelper的-->
    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>c3p0</artifactId>
        <version>0.9.5.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.4</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.4.6</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>1.3.2</version>
    </dependency>
</dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <skip>true</skip>
                </configuration>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>

</project>
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"
       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">
    <!--<context:property-placeholder location="db.properties"/>
    <context:component-scan base-package="com.yujian"/>
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="password" value="${dbPass}"/>
        <property name="user" value="${dbName}"/>
        <property name="jdbcUrl" value="${driverUrl}"/>
        <property name="driverClass" value="${driverClass}"/>
    </bean>
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        &lt;!&ndash;<property name="mapperLocations" value="classpath*:com/yujian/dao/*Mapper.xml"/>&ndash;&gt;
        &lt;!&ndash;<property name="typeAliasesPackage" value="com.yujian.model"/>&ndash;&gt;
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="com.yujian.dao"/>
    </bean>-->

    <!--<bean id="studentService" class="com.yujian.service.StudentService">
        <property name="studentMapper" ref="studentMapper"/>
    </bean>-->
</beans>
db.properties

driverClass=com.mysql.jdbc.Driver
driverUrl=jdbc:mysql://localhost:3306/school?useSSL=false
dbName=root
dbPass=root
全注解方式

package com.yujian.config;

import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.jdbc.core.JdbcTemplate;

import java.beans.PropertyVetoException;

@Configuration
@MapperScan("com.yujian.dao")
@ComponentScan("com.yujian")
@PropertySource("classpath:db.properties")
public class MyConfig {
    @Value("${driverClass}")
    private String driverClass;
    @Value("${driverUrl}")
    private String driverUrl;
    @Value("${dbName}")
    private String dbName;
    @Value("${dbPass}")
    private String dbPass;
    @Bean
    public ComboPooledDataSource dataSource(){
        ComboPooledDataSource dataSource=new ComboPooledDataSource();
        try {
            dataSource.setDriverClass(driverClass);
            dataSource.setJdbcUrl(driverUrl);
            dataSource.setUser(dbName);
            dataSource.setPassword(dbPass);
        } catch (PropertyVetoException e) {
            e.printStackTrace();
        }
        return dataSource;
    }
    /*@Bean
    public JdbcTemplate jdbcTemplate(){
        JdbcTemplate jdbcTemplate=new JdbcTemplate();
        jdbcTemplate.setDataSource(dataSource());
        return jdbcTemplate;
    }*/
    @Bean
    public SqlSessionFactoryBean sqlSessionFactoryBean(){
        SqlSessionFactoryBean sqlSessionFactoryBean=new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource());
        return sqlSessionFactoryBean;
    }

}
启动文件

package com.yujian;

import com.yujian.config.MyConfig;
import com.yujian.model.Student;
import com.yujian.service.StudentService;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;

public class MainApp {
    public static void main(String[] args) {
//        ApplicationContext ctx=new ClassPathXmlApplicationContext("app*.xml");//这是配置文件，下面为全注解
        ApplicationContext ctx=new AnnotationConfigApplicationContext(MyConfig.class);
        StudentService studentService=(StudentService) ctx.getBean("studentService");
        List<Student> students=studentService.findStudentList();
        System.out.println(students);
    }
}