SpringBoot+Mybatis集成搭建

本博客介绍一下SpringBoot集成Mybatis，数据库连接池使用alibaba的druid，使用SpringBoot微框架虽然集成Mybatis之后可以不使用xml的方式来写sql，但是用惯了xml的其实也可以用xml来实现的，实现上具体用什么方式并不重要，主要是搭建一遍，对框架的运转就比较清晰。本博客还是用xml的方式来实现Mybatis的sql编写，不用注解方式。

maven配置

 <!-- springboot mybatis-->
    <dependency>
      <groupId>org.mybatis.spring.boot</groupId>
      <artifactId>mybatis-spring-boot-starter</artifactId>
      <version>1.3.1</version>
    </dependency>

当然要引入druid，mysql等等jar的话可以参考我一个项目里的parent工程的maven配置：

<?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.muses.taoshop</groupId>
  <artifactId>taoshop</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>pom</packaging>
  <name>taoshop</name>

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.7.RELEASE</version>
  </parent>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

    <!-- 模块版本 -->
    <taoshop-web-portal.version>1.0</taoshop-web-portal.version>

    <!-- 外部依赖 -->
    <log4j.version>1.2.17</log4j.version>
    <mysql.version>5.1.27</mysql.version>
    <mybatis.version>3.4.0</mybatis.version>
    <mybatis.spring.version>1.3.0</mybatis.spring.version>
    <mybatis.springboot.version>1.3.1</mybatis.springboot.version>
    <mysql-connector.version>5.1.39</mysql-connector.version>
    <spring-boot.version>1.5.7.RELEASE</spring-boot.version>
    <druid.version>1.1.2</druid.version>
    <github.pagehelper.version>4.2.1</github.pagehelper.version>
    <fastjson.version>1.2.7</fastjson.version>
    <lombok.version>1.16.10</lombok.version>
  </properties>

  <modules>
    <module>taoshop-quartz</module>
    <module>taoshop-search</module>
    <module>taoshop-common</module>
    <module>taoshop-provider-api</module>
    <module>taoshop-provider</module>
    <module>taoshop-manager</module>
    <module>taoshop-portal</module>
    <module>taoshop-cms</module>
    <module>taoshop-order</module>
      <module>taoshop-sso</module>
  </modules>

  <build>
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
          <filtering>true</filtering>
      </resource>
    </resources>
    <plugins>
      <!-- 设置源文件编译 -->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.6.1</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
          <compilerVersion>1.8</compilerVersion>
          <encoding>UTF-8</encoding>
          <skipMain></skipMain>
          <annotationProcessorPaths>
            <path>
              <groupId>org.projectlombok</groupId>
              <artifactId>lombok</artifactId>
              <version>${lombok.version}</version>
            </path>
          </annotationProcessorPaths>

        </configuration>
      </plugin>

      <!-- 解决资源文件的编码问题 -->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-resources-plugin</artifactId>
        <version>3.0.2</version>
        <configuration>
          <encoding>UTF-8</encoding>
        </configuration>
      </plugin>

    </plugins>
  </build>

  <dependencies>
    <!-- Spring boot -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
      <version>${spring-boot.version}</version>
    </dependency>

    <!-- redis -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-redis</artifactId>
      <version>${spring-boot.version}</version>
    </dependency>

    <!-- springboot mybatis-->
    <dependency>
      <groupId>org.mybatis.spring.boot</groupId>
      <artifactId>mybatis-spring-boot-starter</artifactId>
      <version>${mybatis.springboot.version}</version>
    </dependency>

   <!-- 热部署-->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-devtools</artifactId>
      <optional>true</optional>
    </dependency>

    <!--  alibaba druid -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>${druid.version}</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid-spring-boot-starter</artifactId>
      <version>${druid.version}</version>
    </dependency>

    <!-- Themeleaf -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>

    <!-- pagehelper -->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>${github.pagehelper.version}</version>
    </dependency>

    <!-- mysql -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql-connector.version}</version>
    </dependency>

    <!-- fastjson -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.35</version>
    </dependency>

    <!-- lombok -->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>${lombok.version}</version>
    </dependency>

    <!-- 其他工具包-->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.2.2</version>
    </dependency>
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>
    <dependency>
      <groupId>commons-codec</groupId>
      <artifactId>commons-codec</artifactId>
      <version>1.9</version>
    </dependency>
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>3.5</version>
    </dependency>
  </dependencies>
  <!--  设定Maven主仓库为阿里私服 -->
  <repositories>
    <repository>
      <id>repos</id>
      <name>Repository</name>
      <url>http://maven.aliyun.com/nexus/content/groups/public</url>
    </repository>
  </repositories>

  <!--  设定插件仓库 -->
  <pluginRepositories>
    <pluginRepository>
      <id>pluginsRepos</id>
      <name>PluginsRepository</name>
      <url>http://maven.aliyun.com/nexus/content/groups/public</url>
    </pluginRepository>
  </pluginRepositories>

</project>

SpringBoot配置文件

server:
  port: 8081
#logging:
#  config: classpath:logback_spring.xml.bat
#  level:
#    com.muses.taoshop: debug
#  path: /data/logs

spring:
  datasource:

    # 主数据源
    shop:
      url: jdbc:mysql://127.0.0.1:3306/taoshop?autoReconnect=true&useUnicode=true&characterEncoding=utf8&characterSetResults=utf8&useSSL=false
      username: root
      password: root

    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource

    # 连接池设置
    druid:
      initial-size: 5
      min-idle: 5
      max-active: 20
      # 配置获取连接等待超时的时间
      max-wait: 60000
      # 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
      time-between-eviction-runs-millis: 60000
      # 配置一个连接在池中最小生存的时间，单位是毫秒
      min-evictable-idle-time-millis: 300000
      # Oracle请使用select 1 from dual
      validation-query: SELECT ‘x‘
      test-while-idle: true
      test-on-borrow: false
      test-on-return: false
      # 打开PSCache，并且指定每个连接上PSCache的大小
      pool-prepared-statements: true
      max-pool-prepared-statement-per-connection-size: 20
      # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，‘wall‘用于防火墙
      filters: stat,wall,slf4j
      # 通过connectProperties属性来打开mergeSql功能；慢SQL记录
      connection-properties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
      # 合并多个DruidDataSource的监控数据
      use-global-data-source-stat: true

#  jpa:
#    database: mysql
#    hibernate:
#      show_sql: true
#      format_sql: true
#      ddl-auto: none
#      naming:
#        physical-strategy: org.hibernate.boot.entity.naming.PhysicalNamingStrategyStandardImpl

#  mvc:
#    view:
#      prefix: /WEB-INF/jsp/
#      suffix: .jsp

  #添加Thymeleaf配置
  thymeleaf:
    cache: false
    prefix: classpath:/templates/
    suffix: .html
    mode: HTML5
    encoding: UTF-8
    content-type: text/html

  #Jedis配置
#  jedis :
#    pool :
#      host : 127.0.0.1
#      port : 6379
#      password : redispassword
#      timeout : 0
#      config :
#        maxTotal : 100
#        maxIdle : 10
#        maxWaitMillis : 100000

Application启动类

package com.muses.taoshop;

import org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration;
import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.stereotype.*;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.web.bind.annotation.*;
/**
 *
 * <pre>
 *  SpringBoot启动配置类
 * </pre>
 * @author nicky
 * @version 1.00.00
 * <pre>
 * 修改记录
 *    修改后版本:     修改人：  修改日期:     修改内容:
 * </pre>
 */
@Controller
@EnableScheduling//开启对计划任务的支持
@EnableTransactionManagement//开启对事务管理配置的支持
@EnableCaching
@EnableAsync//开启对异步方法的支持
@EnableAutoConfiguration
@ServletComponentScan
@SpringBootApplication(exclude={DataSourceAutoConfiguration.class,
        MybatisAutoConfiguration.class,
        DataSourceTransactionManagerAutoConfiguration.class})
public class PortalApplication {

    @RequestMapping("/")
    @ResponseBody
    String home() {
        return "portal web!";
    }

    @RequestMapping("/doTest")
    @ResponseBody
    String doTest(){
        System.out.println(Thread.currentThread().getName());
        String threadName = Thread.currentThread().getName();
        return threadName;
    }

    public static void main(String[] args) throws Exception {
        SpringApplication.run(PortalApplication.class, args);
    }

}

@SpringBootApplication(exclude={DataSourceAutoConfiguration.class,

MybatisAutoConfiguration.class,

DataSourceTransactionManagerAutoConfiguration.class})，这个注释是必须的，开启自动扫描数据源和Mybatis配置文件

数据库配置

做好SpringBoot启动类的注解之后，需要编写Mybatis和数据源的配置类

写一个Constants类：

package com.muses.taoshop.common.core.database.config;

/**
 * <pre>
 *  基本配置类
 * </pre>
 *
 * @author nicky
 * @version 1.00.00
 * <pre>
 * 修改记录
 *    修改后版本:     修改人：  修改日期:     修改内容:
 * </pre>
 */
public class BaseConfig {

    /**
     * 设置主数据源名称
     */
    public static final String DATA_SOURCE_NAME = "shop";

    /**
     * 加载配置文件信息
     */
    public static final String DATA_SOURCE_PROPERTIES = "spring.datasource.shop";

    /**
     * repository 所在包
     */
    public static final String REPOSITORY_PACKAGES = "com.muses.taoshop.**.repository";

    /**
     * mapper 所在包
     */
    public static final String MAPPER_PACKAGES = "com.muses.taoshop.**.mapper";

    /**
     * 实体类 所在包
     */
    public static final String ENTITY_PACKAGES = "com.muses.taoshop.*.entity";

    /**
     * 自定义TypeHandler
     */
    public static final String TYPE_HANDLERS_PACKAGES = "com.muses.taoshop.common.core.database.typehandlers";

    /**
     * Mybatis session 工厂
     */
    public static final String SQL_SESSION_FACTORY = "sqlSessionFactory";

    /**
     * Mybatis 事务管理器
     */
    public static final String MYBATIS_TRANSACTION_MANAGER = "mybatisTransactionManager";

    /**
     * Jedis连接池
     */
    public static final String JEDIS_POOL = "jedisPool";

    /**
     * Jedis连接池配置
     */
    public static final String JEDIS_POOL_CONFIG = "jedisPoolConfig";

}

DataSource配置类：

package com.muses.taoshop.common.core.database.config;

import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;

import static com.muses.taoshop.common.core.database.config.BaseConfig.DATA_SOURCE_NAME;
import static com.muses.taoshop.common.core.database.config.BaseConfig.DATA_SOURCE_PROPERTIES;

/**
 * <pre>
 *  DataSource配置类
 * </pre>
 *
 * @author nicky
 * @version 1.00.00
 * <pre>
 * 修改记录
 *    修改后版本:     修改人：  修改日期:     修改内容:
 * </pre>
 */
@Configuration
public class DataSourceConfig {

    @Bean(name = DATA_SOURCE_NAME)
    @ConfigurationProperties(prefix = DATA_SOURCE_PROPERTIES)
    public DataSource dataSource() {
        return DruidDataSourceBuilder.create().build();
    }
}

Mybatis配置类：

package com.muses.taoshop.common.core.database.config;

//import com.muses.taoshop.common.core.database.annotation.MybatisRepository;
import com.muses.taoshop.common.core.database.annotation.TypeAliasesPackageScanner;
import org.apache.ibatis.io.VFS;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.mybatis.spring.boot.autoconfigure.SpringBootVFS;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.*;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;

import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import javax.sql.DataSource;

import static com.muses.taoshop.common.core.database.config.BaseConfig.*;

/**
 * <pre>
 *  Mybatis配置类
 * </pre>
 *
 * @author nicky
 * @version 1.00.00
 * <pre>
 * 修改记录
 *    修改后版本:     修改人：  修改日期:     修改内容:
 * </pre>
 */
@MapperScan(
        basePackages = MAPPER_PACKAGES,
        //annotationClass = MybatisRepository.class,
        sqlSessionFactoryRef = SQL_SESSION_FACTORY
)
@ComponentScan
@EnableTransactionManagement
@Configuration
public class MybatisConfig {

    //@Autowired
   //MybatisSqlInterceptor mybatisSqlInterceptor;

    TypeAliasesPackageScanner packageScanner = new TypeAliasesPackageScanner();

    @Bean(name = DATA_SOURCE_NAME)
    @ConfigurationProperties(prefix = DATA_SOURCE_PROPERTIES)
    @Primary
    public DataSource dataSource(){
        return DataSourceBuilder.create().build();
    }

    @Primary
    @Bean(name = SQL_SESSION_FACTORY)
    public SqlSessionFactory sqlSessionFactory(@Qualifier(DATA_SOURCE_NAME)DataSource dataSource)throws Exception{
        //SpringBoot默认使用DefaultVFS进行扫描，但是没有扫描到jar里的实体类
        VFS.addImplClass(SpringBootVFS.class);
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        //factoryBean.setPlugins(new Interceptor[]{mybatisSqlInterceptor});
        factoryBean.setDataSource(dataSource);
        //factoryBean.setConfigLocation(new ClassPathResource("mybatis-config.xml"));
        ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        try{
            factoryBean.setMapperLocations(resolver.getResources("classpath*:/mybatis/*Mapper.xml"));
            String typeAliasesPackage = packageScanner.getTypeAliasesPackages();
            factoryBean.setTypeAliasesPackage(typeAliasesPackage);
            SqlSessionFactory sqlSessionFactory = factoryBean.getObject();
            return sqlSessionFactory;
        }catch (Exception e){
            e.printStackTrace();
            throw new RuntimeException();
        }
    }

    @Bean(name = MYBATIS_TRANSACTION_MANAGER)
    public DataSourceTransactionManager transactionManager(@Qualifier(DATA_SOURCE_NAME)DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

}

通配符别名扫描

这里需要注意一点，因为项目业务需要，这里的别名扫描是做到了竟然通配符的，详情可以参考我之前的博客：https://blog.csdn.net/u014427391/article/details/84723292

Mybatis例子实践

所以，SpringBoot集成Mybatis就基本搭建好了，下面来实践一个例子：

注意：Mybatis的xml文件都要放在resources资源文件夹下面的一个Mybatis文件夹里面，因为已经做了配置

factoryBean.setMapperLocations(resolver.getResources("classpath:/mybatis/Mapper.xml"));

<?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.muses.taoshop.item.mapper.ItemMapper" >

    <sql id="BaseColumnList" >
        id ,
        sku_code ,
        sku_name ,
        price ,
        stock ,
        last_modify_time as lastModifyTime,
        create_time as createTime
    </sql>
    <sql id="OrderBy">
        ORDER BY price
    </sql>

    <!-- 商品详情-->
    <select id="getItemDetail" resultType="ItemDetail">
        SELECT
          itb.brand_name AS brandName,
          s.shop_name AS shopName,
          spu.item_name AS itemName,
          sku.price,
          sku.promotion_price AS promotionPrice,
          sku.img_path AS imgPath,
          sku.stock
        FROM
          item_spu spu
        RIGHT JOIN item_brand itb
          ON itb.id = spu.brand_id
       RIGHT JOIN shop_info s
          ON s.id = spu.shop_id
        LEFT JOIN
        (SELECT
              s.price,
              s.promotion_price,
              s.spu_id,
              s.img_path,
              s.stock
         FROM
              item_sku s
          GROUP BY s.spu_id) sku
        ON sku.spu_id = spu.id
        <where>
            spu.id = #{spuId}
        </where>
    </select>

</mapper>

Mapper接口类：

package com.muses.taoshop.item.mapper;

import com.muses.taoshop.item.entity.ItemDetail;
import com.muses.taoshop.item.entity.ItemPortal;
import com.muses.taoshop.item.entity.ItemSpec;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

import java.util.List;

@Mapper
public interface ItemMapper {

    ItemDetail getItemDetail(@Param("spuId")int spuId);

}

业务接口类：

package com.muses.taoshop.item.service;

import com.muses.taoshop.item.entity.ItemDetail;
import com.muses.taoshop.item.entity.ItemPortal;
import com.muses.taoshop.item.entity.ItemSpec;
import com.muses.taoshop.item.mapper.ItemMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * <pre>
 *  商品信息服务实现类
 * </pre>
 *
 * @author nicky
 * @version 1.00.00
 * <pre>
 * 修改记录
 *    修改后版本:     修改人：  修改日期: 2018.06.24 22:37    修改内容:
 * </pre>
 */
@Service
public class ItemServiceImpl implements IItemService {

    @Autowired
    ItemMapper itemMapper;

    /**
     * 获取商品详情信息
     * @return ItemDetail
     */
    @Override
    public ItemDetail getItemDetailInfo(int spuId){
        ItemDetail itemDetail = itemMapper.getItemDetail(spuId);
        return  itemDetail;
    }

}

代码取自个人的开源项目：https://github.com/u014427391/taoshop，有需要可以参考

原文地址：https://www.cnblogs.com/mzq123/p/10359195.html

时间： 2024-10-24 20:11:53

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