spring boot整合mybatis方式一

方式一：

导入maven依赖：　　

<!--web依赖配置-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--连接池-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.12</version>
</dependency>
<!--mysql-->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>
<!--引入mybatis-->
<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>1.3.2</version>
</dependency>
<!--工具类-->
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
</dependency>
<!--guawa工具类-->
<dependency>
    <groupId>com.google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>27.0.1-jre</version>
</dependency>

配置application.properties：

#druid
spring.druid.url=jdbc:mysql:///mysql04?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT
spring.druid.driverClassName=com.mysql.jdbc.Driver
spring.druid.username=root
spring.druid.password=root
#最大链接数
spring.druid.maxActive=30
#最小链接数
spring.druid.minIdle=5
#获得链接的最大等待时间
spring.druid.maxWait=10000

#指定mybatis配置文件地址
mybatis.config-location=classpath:mybatis/mybatis-config.xml

#端口
server.port=8888

配置DruidConfig配置类(包含sql检测：显示慢sql)：

@Configuration
public class DruidConfig {

    @Bean
    @ConfigurationProperties(prefix = "spring.druid")
    public DruidDataSource druidDataSource(){
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setProxyFilters(Lists.newArrayList(statFilter()));
        return dataSource;
    }
    @Bean
    public StatFilter statFilter(){
        StatFilter filter = new StatFilter();
        filter.setLogSlowSql(true);
        filter.setMergeSql(true);
        filter.setSlowSqlMillis(5);
        return filter;
    }

    @Bean
    public ServletRegistrationBean servletRegistrationBean(){
        return new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
    }

}

配置mybatis核心配置文件（主要配置别名与映射xml文件）：

<?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>

    <settings>
        <!--关闭缓存，多机环境 数据更新 不会刷新缓存-->
        <setting name="cacheEnabled" value="false"/>
        <!--开启驼峰匹配-->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <!--允许主键生成-->
        <setting name="useGeneratedKeys" value="true"/>
        <!--配置默认的执行器。SIMPLE 就是普通的执行器；
        REUSE 执行器会重用预处理语句（prepared statements）；
        BATCH 执行器将重用语句并执行批量更新。
    请自行百度，这部分内容不会详细介绍，涉及到架构设计，跟我们暂时还不沾边
    https://blog.csdn.net/qingtian211/article/details/81838042
        -->
        <setting name="defaultExecutorType" value="REUSE"/>
        <setting name="defaultStatementTimeout" value="600"/>
    </settings>

    <typeAliases>
        <package name="com.springbootmybatis.procedure.entity"/>
    </typeAliases>

    <mappers>
        <mapper resource="mapper/OrderMapper.xml"/>
    </mappers>
</configuration>

配置xml文件，与mapper层一一对应：

<?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.springbootmybatis.procedure.mapper.OrderMapper">
    <update id="cancelOrder" parameterType="string" statementType="CALLABLE">
        call cancel_order(#{orderId,jdbcType=VARCHAR,mode=IN})
    </update>
    <select id="findAll" resultType="order">
        select * from xmcc_order
    </select>
</mapper>

再之后就是配置实体类与mapper层接口，此处省略。。。

springboot整合junit测试（两个注解）：

@RunWith(SpringRunner.class)
@SpringBootTest
public class ProcedureApplicationTests {

    @Autowired
    private OrderMapper orderMapper;

    @Test
    public void contextLoads() {
        List<Order> orders = orderMapper.findAll();
        orders.stream().forEach(System.out::println);
    }
}

最后附一份GitHub项目仓库地址：

https://github.com/ycheneye/procedure