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实现在Springboot中集成Mybatis和Druid。其中使用的为spring-boot-starter-parent如下：
org.springframework.boot
spring-boot-starter-parent
2.0.0.RELEASE
1,引入需要的依赖
com.alibaba
druid
1.1.8
org.mybatis
mybatis-spring
1.3.2
org.mybatis
mybatis
3.4.6
org.springframework
spring-jdbc
com.github.pagehelper
pagehelper
5.1.4
2，application.yml中配置数据源信息
spring:
datasource:
master:
driverClassName: oracle.jdbc.OracleDriver
url: jdbc:oracle:thin:@192.168.30.150:1521:orcl
username: ioss_sqm
password: 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 {
@Override
public 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
@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 properties = new HashMap();
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5s
properties.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Bean
public 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 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 {
@Bean
public 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;
}
@Bean
public FilterRegistrationBean filterRegistrationBean() {
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
filterRegistrationBean.setFilter(new WebStatFilter());
filterRegistrationBean.addUrlPatterns("/*");
filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
return filterRegistrationBean;
}
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本文题目：如何实现在Springboot中集成Mybatis和Druid
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