springboot整合mybatis框架

一、引入依赖jar包

    <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
         <scope>test</scope>
      </dependency>
      <dependency>
          <groupId>commons-lang</groupId>
          <artifactId>commons-lang</artifactId>
          <version>2.6</version>
      </dependency>
      <!-- gson工具依赖 -->
      <dependency>
          <groupId>com.google.code.gson</groupId>
          <artifactId>gson</artifactId>
          <version>2.8.2</version>
      </dependency>
      <!-- fastjson工具依赖 -->
      <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>fastjson</artifactId>
          <version>1.2.47</version>
      </dependency>

      <dependency>
         <groupId>net.sf.json-lib</groupId>
         <artifactId>json-lib</artifactId>
         <version>2.2.1</version>
         <classifier>jdk15</classifier>
         <scope>compile</scope>
      </dependency>

      <dependency>
         <groupId>struts</groupId>
         <artifactId>struts</artifactId>
         <version>1.2.9</version>
         <scope>compile</scope>
      </dependency>

      <dependency>
         <groupId>org.apache.shiro</groupId>
         <artifactId>shiro-core</artifactId>
         <version>1.2.1</version>
         <scope>compile</scope>
      </dependency>
      <dependency>
         <groupId>org.apache.shiro</groupId>
         <artifactId>shiro-web</artifactId>
         <version>1.2.1</version>
         <scope>compile</scope>
      </dependency>
      <dependency>
         <groupId>org.apache.shiro</groupId>
         <artifactId>shiro-ehcache</artifactId>
         <version>1.2.1</version>
         <scope>compile</scope>
      </dependency>
      <dependency>
         <groupId>org.apache.shiro</groupId>
         <artifactId>shiro-spring</artifactId>
         <version>1.2.1</version>
         <scope>compile</scope>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>

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

      <!-- spring mvc json start -->
      <dependency>
         <groupId>org.codehaus.jackson</groupId>
         <artifactId>jackson-mapper-asl</artifactId>
         <version>1.9.13</version>
      </dependency> 
      <!-- spring mvc json end -->

      <!-- druid数据源连接 -->
      <dependency>
         <groupId>com.alibaba</groupId>
         <artifactId>druid</artifactId>
         <version>1.0.9</version>
         <exclusions>
            <exclusion>
               <groupId>com.alibaba</groupId>
               <artifactId>jconsole</artifactId>
            </exclusion>
            <exclusion>
               <groupId>com.alibaba</groupId>
               <artifactId>tools</artifactId>
            </exclusion>
         </exclusions>
      </dependency>

      <!-- mybatis分页插件 -->
      <dependency>
         <groupId>com.github.pagehelper</groupId>
         <artifactId>pagehelper</artifactId>
         <version>4.1.6</version>
      </dependency>

      <!-- oracle驱动包 -->
      <dependency>
         <groupId>com.oracle</groupId>
         <artifactId>ojdbc14</artifactId>
         <version>10.2.0.1.0</version>
      </dependency>

      <!-- 集成swaggerUI -->
      <dependency>
         <groupId>io.springfox</groupId>
         <artifactId>springfox-swagger-ui</artifactId>
         <version>2.5.0</version>
      </dependency>

      <dependency>
         <groupId>io.springfox</groupId>
         <artifactId>springfox-swagger2</artifactId>
         <version>2.5.0</version>
      </dependency>

      <dependency>
         <groupId>javax.persistence</groupId>
         <artifactId>persistence-api</artifactId>
         <version>1.0.2</version>
      </dependency>

      <!-- io处理 -->
      <dependency>
         <groupId>org.apache.commons</groupId>
         <artifactId>commons-io</artifactId>
         <version>1.3.2</version>
      </dependency>

      <dependency>
         <groupId>org.apache.directory.studio</groupId>
         <artifactId>org.apache.commons.io</artifactId>
         <version>2.4</version>
      </dependency>
      <dependency>
          <groupId>org.apache.commons</groupId>
          <artifactId>commons-lang3</artifactId>
          <version>3.7</version>
      </dependency>

      <!-- xstream jar -->
      <dependency>
          <groupId>com.thoughtworks.xstream</groupId>
          <artifactId>xstream</artifactId>
          <version>1.4.9</version>
      </dependency>

      <!-- FreeMarker支持 -->
<!--       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-freemarker</artifactId>
       </dependency> -->
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-thymeleaf</artifactId>
      </dependency>

      <dependency>
         <groupId>org.slf4j</groupId>
         <artifactId>slf4j-api</artifactId>
         <version>1.7.21</version>
      </dependency>

二、编写mybatis映射xml接口一一映射的类

package com.yzh.config;
import java.util.Properties;
import javax.sql.DataSource;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.env.Environment;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import com.alibaba.druid.pool.DruidDataSource;
import com.github.pagehelper.PageHelper;

/**
 * @Description: Mybatis基础配置
 * @author 
* @version 1.0.1
 */
@Configuration
@MapperScan(basePackages = "com.yzh.dao", sqlSessionFactoryRef = "defaultSqlSessionFactory")
public class MyBatisConfig {

   @Autowired
   private Environment env;

   @Primary
   @Bean(name = "defaultDataSource")
   public DataSource defaultDataSource(){
      DruidDataSource dataSource = new DruidDataSource();
      dataSource.setDriverClassName(env.getProperty("spring.datasource.driver-class-name"));
      dataSource.setUrl(env.getProperty("spring.datasource.url"));
      dataSource.setUsername(env.getProperty("spring.datasource.username"));
      dataSource.setPassword(env.getProperty("spring.datasource.password"));
      return dataSource;
   }

   /**
    * @Title: sqlSessionFactoryBean 
    * @Description: 获取session工厂
    * @return SqlSessionFactory
    */
   @Primary
    @Bean(name = "defaultSqlSessionFactory")
    public SqlSessionFactory sqlSessionFactoryBean(@Qualifier("defaultDataSource") DataSource defaultDataSource) {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(defaultDataSource);
        bean.setTypeAliasesPackage("com.yzh.entity");

        //分页插件
        PageHelper pageHelper = new PageHelper();
        Properties properties = new Properties();
        properties.setProperty("reasonable", "true");
        properties.setProperty("supportMethodsArguments", "true");
        properties.setProperty("returnPageInfo", "check");
        properties.setProperty("params", "count=countSql");
        pageHelper.setProperties(properties);

        //添加插件
        bean.setPlugins(new Interceptor[]{pageHelper});

        //添加XML目录
        ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        try {
            bean.setMapperLocations(resolver.getResources("classpath*:mybatis/com/yzh/dao/*.xml"));
            return bean.getObject();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * @Title: sqlSessionTemplate 
     * @Description: sqlSessionTemplate实例
     * @param sqlSessionFactory session工厂
     * @return SqlSessionTemplate
     */
    @Primary
    @Bean("defaultSqlSessionTemplate")
    public SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }

    @Primary
    @Bean(name = "defaultTransactionManager")
   public DataSourceTransactionManager transactionManager(@Qualifier("defaultDataSource") DataSource dataSource) {
      return new DataSourceTransactionManager(dataSource);
   }

}

三、编写映射xml文件
在IDEA工程下面的resources目录编写一个mybatis.com.yzh.dao目录，在目录下建立xml文件，这些xml文件通过下面的语句一一映射到mapper接口：
bean.setMapperLocations(resolver.getResources(“classpath*:mybatis/com/yzh/dao/*.xml”));
注意：
@Configuration注解
Spring Boot提倡基于Java的配置。尽管你可以使用一个XML源来调用 SpringApplication.run() ，我们通常建议你使用 @Configuration 类作为主要源。一般定义 main 方法的类也是主要 @Configuration 的一个很好候选。你不需要将所有的 @Configuration 放进一个单独的类。 @Import 注解可以用来导入其他配置类。另外，你也可以使用 @ComponentScan 注解自动收集所有的Spring组件，包括 @Configuration 类。如果你绝对需要使用基于XML的配置，我们建议你仍旧从一个 @Configuration 类开始。你可以使用附加的 @ImportResource 注解加载XML配置文件。@Configuration注解该类，等价 与XML中配置beans；用@Bean标注方法等价于XML中配置bean。

四、编写application.yml文件
在resource目录下面编写application.yml文件，内容如下所示。

`server:

    port: 8086
#是否开启swagger (true/false)
swagger-open: true

#json文件上传路径
saveFileRootPath: C:\Users\Administrator\Desktop

spring:
    datasource:
        name: pro
        url: jdbc:oracle:thin:@localhost:1521:orcl
        username: xxx
        password: y
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: oracle.jdbc.driver.OracleDriver
        filters: stat
        maxActive: 20
        initialSize: 1
        maxWait: 60000
        minIdle: 1
        timeBetweenEvictionRunsMillis: 60000
        minEvictableIdleTimeMillis: 300000
        validationQuery: select 'x'
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        poolPreparedStatements: true
        maxOpenPreparedStatements: 20