以下内容用于记录目的。实现在Springboot中集成Mybatis和Druid。其中使用的为spring-boot-starter-parent如下：

<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.0.RELEASE</version><relativePath/> <!-- lookup parent from repository -->
</parent>

1,引入需要的依赖

<dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.1.8</version>
</dependency>
<dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.3.2</version>
</dependency>
<dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.4.6</version>
</dependency>
<dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId>
</dependency>
<dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper</artifactId><version>5.1.4</version>
</dependency>

2，application.yml中配置数据源信息

spring: datasource: master:driverClassName: oracle.jdbc.OracleDriverurl: jdbc:oracle:thin:@192.168.30.150:1521:orclusername: ioss_sqmpassword: ioss_sqm

3，创建用于封装数据源配置信息的对象DruidPropConfig

public class DruidPropConfig {private String url ;private String driverClassName ;private String username ;
}

4，创建用于判断是否需要创建数据源的Condition对象

public class MasterDataSourceCondition implements Condition {@Overridepublic boolean matches(ConditionContext context, AnnotatedTypeMetadata arg1) {if(!context.getEnvironment().containsProperty("spring.datasource.master.url")){return false ;}if(!context.getEnvironment().containsProperty("spring.datasource.master.driverClassName")){return false ;}if(!context.getEnvironment().containsProperty("spring.datasource.master.username")){return false ;}if(!context.getEnvironment().containsProperty("spring.datasource.master.password")){return false ;}String url = context.getEnvironment().getProperty("spring.datasource.master.url") ;String driverClassName = context.getEnvironment().getProperty("spring.datasource.master.driverClassName") ;String username = context.getEnvironment().getProperty("spring.datasource.master.username") ;String password = context.getEnvironment().getProperty("spring.datasource.master.password") ;if(StringUtils.isNotBlank(url) && StringUtils.isNotBlank(driverClassName) && StringUtils.isNotBlank(username)&& StringUtils.isNotBlank(password)){return true ;}return false;}
}

5，配置数据源

@Configuration
@EnableTransactionManagement // 启注解事务管理，等同于xml配置方式的 <tx:annotation-driven />
@Conditional(MasterDataSourceCondition.class)
@MapperScan(basePackages = "com.ultrapower.ioss.cmnet.linksync.mapper", sqlSessionTemplateRef="sqlSessionTemplate")
public class MasterDataSourceCfg{private Logger log = LoggerFactory.getLogger(MasterDataSourceCfg.class) ;public PageInterceptor pageHelper() {PageInterceptor pageHelper = new PageInterceptor();Properties properties = new Properties();properties.setProperty("offsetAsPageNum", "true");properties.setProperty("rowBoundsWithCount", "true");properties.setProperty("offsetAsPageNum", "true");properties.setProperty("pageSizeZero", "true");properties.setProperty("reasonable", "true");properties.setProperty("autoRuntimeDialect", "true");// properties.setProperty("params","pageNum=pageNum;pageSize=pageSize");pageHelper.setProperties(properties);return pageHelper;}@Primary@Bean(name = "datasourceConfig")@ConfigurationProperties(prefix="spring.datasource.master")public DruidPropConfig datasourceConfig(){return new DruidPropConfig();}/*** 主数据库数据源* */@Primary@Bean(name = "dataSource")public DataSource dataSource() throws Exception{DruidPropConfig config = datasourceConfig();if(config == null || config.getDriverClassName() == null){throw new Exception("slave datasource 数据源需要配置." + config.toString());}/*DruidDataSource dataSource = new DruidDataSource();dataSource.setDriverClassName(config.getDriverClassName());dataSource.setUrl(config.getUrl());dataSource.setUsername(config.getUsername());dataSource.setPassword(config.getPassword());dataSource.setConnectionErrorRetryAttempts(5);return dataSource;*/Map<String, Object> properties = new HashMap<String, Object>();properties.put(DruidDataSourceFactory.PROP_DRIVERCLASSNAME, config.getDriverClassName());properties.put(DruidDataSourceFactory.PROP_URL, config.getUrl());properties.put(DruidDataSourceFactory.PROP_USERNAME, config.getUsername());properties.put(DruidDataSourceFactory.PROP_PASSWORD, config.getPassword());// 添加统计、SQL注入、日志过滤器properties.put(DruidDataSourceFactory.PROP_FILTERS, "stat,wall,log4j2");// sql合并，慢查询定义为5sproperties.put(DruidDataSourceFactory.PROP_CONNECTIONPROPERTIES, "druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000");return DruidDataSourceFactory.createDataSource(properties);}@Primary@Bean(name = "sqlSessionFactory")@ConditionalOnBean(name = "dataSource") // 仅仅在当前上下文中存在某个对象时，才会实例化一个Beanpublic SqlSessionFactory sqlSessionFactoryBean(@Qualifier("dataSource") DataSource dataSource) {SqlSessionFactoryBean bean = new SqlSessionFactoryBean();//bean.setObjectWrapperFactory(new MapWrapperFactory());bean.setDataSource(dataSource);// bean.setPlugins(new Interceptor[] {// pageHelper(),sqlPrintInterceptor() });bean.setPlugins(new Interceptor[] { pageHelper() });// 添加XML目录ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();try {List<Resource> resources = new ArrayList<>();resources.addAll(Arrays.asList(resolver.getResources("classpath*:com/ultrapower/ioss/**/mapper/**/*.xml")));resources.addAll(Arrays.asList(resolver.getResources("classpath:mapper/**/*.xml")));bean.setMapperLocations(resources.toArray(new Resource[resources.size()]));// 设置mybatis configuration 扫描路径// bean.setConfigLocation(resolver.getResource("classpath:mybatis-config.xml"));return bean.getObject();} catch (Exception e) {e.printStackTrace();throw new RuntimeException(e);}}@Primary@Bean("sqlSessionTemplate")@ConditionalOnBean(name = "sqlSessionFactory")public SqlSessionTemplate sqlSessionTemplate(@Qualifier("sqlSessionFactory") SqlSessionFactory sqlSessionFactory) {return new SqlSessionTemplate(sqlSessionFactory);}@Primary@ConditionalOnBean(name = "dataSource")@Bean(name = "transactionManager")public PlatformTransactionManager transactionManager(@Qualifier("dataSource") DataSource dataSource) {DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager(dataSource);return dataSourceTransactionManager;}
}

6，配置Durid监控

@Configuration
public class DruidConfiguration {@Beanpublic ServletRegistrationBean druidServlet() {ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean();servletRegistrationBean.setServlet(new StatViewServlet());servletRegistrationBean.addUrlMappings("/druid/*");// IP白名单//servletRegistrationBean.addInitParameter("allow", "192.168.2.25,127.0.0.1");// IP黑名单(共同存在时，deny优先于allow)//servletRegistrationBean.addInitParameter("deny", "192.168.1.100");// 控制台管理用户servletRegistrationBean.addInitParameter("loginUsername", "admin");servletRegistrationBean.addInitParameter("loginPassword", "admin");// 是否能够重置数据 禁用HTML页面上的“Reset All”功能servletRegistrationBean.addInitParameter("resetEnable", "false");return servletRegistrationBean;}@Beanpublic FilterRegistrationBean filterRegistrationBean() {FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();filterRegistrationBean.setFilter(new WebStatFilter());filterRegistrationBean.addUrlPatterns("/*");filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");return filterRegistrationBean;}
}