SpringBoot整合Mybatis（注解版）

不知道是人品问题还是什么，我使用springBoot整合Mybatis模块后，竟然起作用

下面是我的解决办法：

         springBoot :1.5.10.RELEASE

     idea : 2017.4

     mysql :5.5

     Druid数据源

步骤：

    1.创建springBoot工程，导入web ,Mysql ,jdbc ,Mybatis模块

    2.在pom中导入 druid,Mybatis,Mybatis-spring

      mybatis自动生成器，分页插件的依赖

    3.pom.xml文件如下：

        

<?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.ssm</groupId>
   <artifactId>springboot-data-mybatis-09</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <packaging>jar</packaging>

   <name>springboot-data-mybatis-09</name>
   <description>Demo project for Spring Boot</description>

   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>1.5.10.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>

   <properties>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
      <java.version>1.8</java.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-data-jpa</artifactId>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-jdbc</artifactId>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>
      <dependency>
         <groupId>org.mybatis.spring.boot</groupId>
         <artifactId>mybatis-spring-boot-starter</artifactId>
         <version>1.3.2</version>
      </dependency>

      <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
         <scope>runtime</scope>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
      </dependency>
      <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
      <dependency>
         <groupId>com.alibaba</groupId>
         <artifactId>druid</artifactId>
         <version>1.1.10</version>
      </dependency>
      <!--mybatis-spring-->
      <dependency>
         <groupId>org.mybatis</groupId>
         <artifactId>mybatis-spring</artifactId>
         <version>1.2.2</version>
      </dependency>
      <!--mybatis-->
      <dependency>
         <groupId>org.mybatis</groupId>
         <artifactId>mybatis</artifactId>
         <version>3.2.8</version>
      </dependency>
      <!--pageHelper-->
      <dependency>
         <groupId>com.github.pagehelper</groupId>
         <artifactId>pagehelper</artifactId>
         <version>4.1.6</version>
      </dependency>
   </dependencies>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
         <plugin>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-maven-plugin</artifactId>
            <version>1.3.2</version>
            <configuration>
               <verbose>true</verbose>
               <overwrite>true</overwrite>
            </configuration>
            <dependencies>
               <dependency>
                  <groupId>org.mybatis.generator</groupId>
                  <artifactId>mybatis-generator-core</artifactId>
                  <version>1.3.2</version>
               </dependency>
            </dependencies>
         </plugin>
      </plugins>
   </build>


</project>

    4. 在application.yml中配置数据源

        

spring:
  datasource:
    username: root
    password: 123456
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/ssm
    type: com.alibaba.druid.pool.DruidDataSource
#   数据源其他配置
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
#   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,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500


  5. 创建Druid配置类

@Configuration
public class DruidConfig {



    @Bean
    @ConfigurationProperties(prefix = "spring.datasource")
    public DruidDataSource druidDataSource(){
        return new DruidDataSource();
    }

    @Bean
    public ServletRegistrationBean servletRegistrationBean(){
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
        Map<String,String> map = new HashMap<>();
        map.put("loginUsername", "admin");
        map.put("loginPassword", "123456");
        map.put("allow", "localhost");
        servletRegistrationBean.setInitParameters(map);
        return servletRegistrationBean;
    }

    @Bean
    public FilterRegistrationBean filterRegistrationBean(){
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
        Map<String,String> inintParam = new HashMap<>();
        //不过滤静态资源和后台请求
        inintParam.put("exclusions","*.js,*.css,/druid/*");
        filterRegistrationBean.setInitParameters(inintParam);
        return filterRegistrationBean;
    }
}

    6.使用Mybatis自动生成器生成代码

    7.创建Mybatis配置类:（一定配置成两个配置类，否则会报错）

        MybatisConfig:(mybatis主配置类)

            

@Configuration
@EnableTransactionManagement
public class MyBatisConfig implements TransactionManagementConfigurer {

    @Autowired
    DataSource dataSource;

    @Bean(name = "sqlSessionFactory")
    public SqlSessionFactory sqlSessionFactoryBean() {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setTypeAliasesPackage("com.ssm.pojo");


        //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:mapper/*.xml"));
            return bean.getObject();
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(e);
        }
    }

    @Bean
    public SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }

    @Bean
    @Override
    public PlatformTransactionManager annotationDrivenTransactionManager() {
        return new DataSourceTransactionManager(dataSource);
    }

}

        MyBatisMapperScannerConfig:(扫描mapper  dao)

                

@Configuration
@AutoConfigureAfter(MyBatisConfig.class)//必须加这个注解，否则会报错
public class MyBatisMapperScannerConfig {

    @Bean
    public MapperScannerConfigurer mapperScannerConfigurer() {
        MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
        mapperScannerConfigurer.setSqlSessionFactoryBeanName("sqlSessionFactory");
        mapperScannerConfigurer.setBasePackage("com.ssm.dao");
        return mapperScannerConfigurer;
    }

}

        8.创建controller测试是否可用