标签:group 绑定 dmi init 自动 .config min 映射文件 font
1、JDBC
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency>
1 spring: 2 datasource: 3 username: root 4 password: 123456 5 url: jdbc:mysql://192.168.1.104:3306/jdbc 6 driver-class-name: com.mysql.jdbc.Driver
效果:
默认使用org.apache.tomcat.jdbc.pool.DataSource作为数据源;
数据源的相关配置都在DataSourceProperties里面;
自动配置原理:
org.springframework.boot.autoconfigure.jdbc:
1、参考DataSourceConfiguration,根据配置创建数据源,默认使用Tomcat连接池;可以使用spring.datasource.type指定自定义的数据源类型;
2、SpringBoot默认可以支持;
org.apache.tomcat.jdbc.pool.DataSource、HikariDataSource、BasicDataSource
3、自定义数据源类型
/** * Generic DataSource configuration. */ @ConditionalOnMissingBean(DataSource.class) @ConditionalOnProperty(name = "spring.datasource.type") static class Generic { @Bean public DataSource dataSource(DataSourceProperties properties) { //使用DataSourceBuilder创建数据源 ,利用反射创建响应type的数据源,并且绑定相关属性 return properties.initializeDataSourceBuilder().build(); } }
4、DataSourceInitializer:ApplicationListener
作用:
1)、runSchemaScripts();运行建表语句;
2)、runDataScripts();运行插入数据的sql语句;
默认只需要将文件命名为:
schema-*.sql、data-*.sql
默认规则:schema.sql,schema-all.sql;
可以使用
schema:
- classpath:department.sql
指定位置
5、操作数据库:自动配置jdbcTemplate操作数据库
2、整合Druid数据源
导入Druid数据源
1 @Configuration 2 public class DruidConfig { 3 4 @ConfigurationProperties(prefix = "spring.datasource") 5 @Bean 6 public DataSource druid(){ 7 return new DruidDataSource(); 8 } 9 10 //配置Druid的监控 11 //1、配置一个管理后台的Servlet 12 @Bean 13 public ServletRegistrationBean statViewServlet(){ 14 ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*"); 15 Map<String,String> initParams = new HashMap<>(); 16 initParams.put("loginUsername","admin"); 17 initParams.put("loginPassword","123456"); 18 initParams.put("allow","");//默认允许所有访问 19 initParams.put("deny","192.168.1.102"); 20 bean.setInitParameters(initParams); 21 return bean; 22 } 23 24 //2、配置一个web监控的filter 25 @Bean 26 public FilterRegistrationBean webStatFilter(){ 27 FilterRegistrationBean bean = new FilterRegistrationBean(); 28 bean.setFilter(new WebStatFilter()); 29 Map<String,String> initParams = new HashMap<>(); 30 initParams.put("exclusions","*.js,*.css,/druid/*"); 31 bean.setInitParameters(initParams); 32 bean.setUrlPatterns(Arrays.asList("/*")); 33 return bean; 34 } 35 36 }
3、整合Mybatis
1 <dependency> 2 <groupId>org.mybatis.spring.boot</groupId> 3 <artifactId>mybatis-spring-boot-starter</artifactId> 4 <version>1.3.2</version> 5 </dependency>
步骤:
1)、配置数据源相关属性(见上一节Druid)
2)、给数据库建表
3)、创建JavaBean
4、注解版
//指定这是一个操作数据库的mapper @Mapper public interface DepartmentMapper { @Select("select * from department where id=#{id}") Department getDeptById(Integer id); @Delete("delete from department where id=#{id}") int deleteDeptById(Integer id); @Options(useGeneratedKeys = true,keyProperty = "id") @Insert("insert into department(departmentName) values (#{departmentName})") int insertDept(Department department); @Update("update department set departmentName=#{departmentName} where id=#{id}") int updateDept(Department department); }
问题:
自定义MyBatis的配置规则,给容器中添加一个ConfigurationCustomizer;
@org.springframework.context.annotation.Configuration public class MyBatisConfig { @Bean public ConfigurationCustomizer configurationCustomizer() { return new ConfigurationCustomizer() { @Override public void customize(Configuration configuration) { configuration.setMapUnderscoreToCamelCase(true); } }; } }
使用MapperScan批量扫描所有的Mapper接口; @MapperScan(value = "com.young.springboot.mapper") @SpringBootApplication public class SpringBoot06DataMybatisApplication { public static void main(String[] args) { SpringApplication.run(SpringBoot06DataMybatisApplication.class, args); } }
5、配置文件版
mybatis:
config-location: classpath:mybatis/mybatis-config.xml 指定全局配置文件的位置
mapper-locations: classpath:mybatis/mapper/*.xml 指定sql映射文件的位置
标签:group 绑定 dmi init 自动 .config min 映射文件 font
原文地址:https://www.cnblogs.com/yang-young-young/p/9465497.html