根据项目功能需求,需要与第三方公共库对接,需要对公共库进行相关操作,由于不想使用原生jdbc,所以采用mybaits进行多数据配置。
单纯的使用mybaits进行多数据配置网上资料很多,但由于前期为了方便开发,采用了tk-mybaits。关于tk-mybaits多数据源配置没有相关材料,官方也没有提供相关功能说明,所以最终采用mybatis+tk-mybaits分别使用的策略进行多数据源配置功能实现。具体代码如下
一、配置连接信息
#开发运行环境数据库
spring.datasource.local.url=jdbc:mysql://0.0.0.0:3306/zhdd
spring.datasource.local.username=root
spring.datasource.local.password=
spring.datasource.local.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.local.druid.initial-size=1
spring.datasource.local.druid.min-idle=1
spring.datasource.local.druid.max-active=20
spring.datasource.local.druid.test-on-borrow=true
spring.datasource.local.druid.stat-view-servlet.allow=true
#第三方对接通用数据库
spring.datasource.public.url=jdbc:mysql://0.0.0.0:3306/zhdd
spring.datasource.public.username=root
spring.datasource.public.password=
spring.datasource.public.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.public.druid.initial-size=1
spring.datasource.public.druid.min-idle=1
spring.datasource.public.druid.max-active=20
spring.datasource.public.druid.test-on-borrow=true
spring.datasource.public.druid.stat-view-servlet.allow=true
二、配置DataSource数据源
注意两个数据源中有一个是为主数据源,需要增加一个@Primary注解,有且只能有一个需要。关于2个以上数据源没有额外再进行研究了,不过利用mybatis再额外配置多个数据源应该可以实现
1.数据源1配置
package com.hiynn.core.mybatis;
import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
public class LocalDataSourceConfig {
@Bean(name = "localDataSource")
@ConfigurationProperties(prefix = "spring.datasource.local")
@Primary
public DataSource localDataSource() {
return DruidDataSourceBuilder.create().build();
}
@Bean(name = "localTransactionManager")
@Primary
public DataSourceTransactionManager mysqlTransactionManager() {
return new DataSourceTransactionManager(localDataSource());
}
@Bean(name = "localSqlSessionFactory")
@Primary
public SqlSessionFactory mysqlSqlSessionFactory(@Qualifier("localDataSource") DataSource dataSource)
throws Exception {
SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(dataSource);
//如果不使用xml的方式配置mapper,则可以省去下面这行mapper location的配置。
sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources("classpath*:mapper
@Configuration
public class PublicDataSourceConfig {
@Bean(name = "publicDataSource")
@ConfigurationProperties(prefix = "spring.datasource.public")
public DataSource publicDataSource() {
return DruidDataSourceBuilder.create().build();
}
@Bean(name = "publicTransactionManager")
public DataSourceTransactionManager mysqlTransactionManager() {
return new DataSourceTransactionManager(publicDataSource());
}
@Bean(name = "publicSqlSessionFactory")
public SqlSessionFactory mysqlSqlSessionFactory(@Qualifier("publicDataSource") DataSource dataSource)
throws Exception {
SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(dataSource);
//如果不使用xml的方式配置mapper,则可以省去下面这行mapper location的配置。
sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources("classpath*:mapper2
@ServletComponentScan
@SpringBootApplication
@EnableTransactionManagement
@EnableSwagger2
@MapperScan(basePackages = "com.hiynn.core.**.mapper",sqlSessionFactoryRef = "localSqlSessionFactory")
@org.mybatis.spring.annotation.MapperScan(basePackages = "com.hiynn.core.**.mapper2",sqlSessionFactoryRef = "publicSqlSessionFactory")
public class Application extends SpringBootServletInitializer{
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
四、Mapper代码结构
补充:
一、解决mybatis数据库驼峰命名自动映射问题以及sql语句打印问题,通过读取配置文件实现。两个数据源都需要设置
@Bean(name = "localSqlSessionFactory")
@Primary
public SqlSessionFactory mysqlSqlSessionFactory(@Qualifier("localDataSource") DataSource dataSource)
throws Exception {
SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(dataSource);
//添加mybatis配置文件读取功能更
sessionFactory.setConfigLocation(new PathMatchingResourcePatternResolver().getResource("mybatis-config.xml"));
//如果不使用xml的方式配置mapper,则可以省去下面这行mapper location的配置。
sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources("classpath*:mapper/*.xml"));
return sessionFactory.getObject();
}
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<setting name="mapUnderscoreToCamelCase" value="true" />
<!-- 打印查询语句 -->
<setting name="logImpl" value="STDOUT_LOGGING" />
</settings>
</configuration>
二、配置PageHelper分页插件,在application.properties统一配置
数据库方言 指定分页插件使用哪种数据库方言
pagehelper.helperDialect=mysql
#分页参数合理化 pageNum<=0 时会查询第一页, pageNum>pages(超过总数时),会查询最后一页
pagehelper.reasonable=true
pagehelper.supportMethodsArguments=true
pagehelper.params=count=countSql
到此这篇关于tk-mybatis整合springBoot使用两个数据源的方法的文章就介绍到这了,更多相关tk-mybatis springBoot数据源内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网!