技術標籤：java專案同時訪問兩個資料庫的配置mybatismysqlspring boot

java專案同時訪問兩個資料庫的配置
(1)在application.yml配置檔案中對兩個資料庫進行訪問配置（任何兩種資料庫都可以用如下的配置）

  # ----------------------------------------------------------------> 資料庫
  datasource:
   one:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/anji_tea?useSSL = false&useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8
    username: root
    password: 123456

   two:
    driver-class-name: org.postgresql.Driver
    url: jdbc:postgresql://localhost:5432/postgis_24_sample
    username: postgres
    password: 123456

 

（2）分別建立兩個類進行兩個資料庫訪問的配置
①資料庫1

package com.sunvua.config;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
//import org.springframework.boot.jdbc.DataSourceBuilder;
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;

/**
 * 資料庫1配置
 * @author 
 */
@Configuration
@MapperScan(basePackages = "com.sunvua.sys.**.mapper.**", sqlSessionTemplateRef = "oneSqlSessionTemplate")
public class OneDataSourceConfig {
    @Bean(name = "oneDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.one")
    @Primary
    public DataSource oneDataSource(){
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "oneSqlSessionFactory")
    @Primary
    public SqlSessionFactory testSqlSessionFactory(@Qualifier("oneDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapper/**/*.xml"));
        return bean.getObject();
    }

    @Bean(name = "oneTransactionManager")
    @Primary
    public DataSourceTransactionManager testTransactionManager(@Qualifier("oneDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean(name = "oneSqlSessionTemplate")
    @Primary
    public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("oneSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }


}

 

②資料庫2

package com.sunvua.config;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;

/**
 * 資料庫2配置
 * @author 
 */
@Configuration
@MapperScan(basePackages = "com.sunvua.twokinds.**.mapper.**",sqlSessionTemplateRef = "twoSqlSessionTemplate")
public class TwoDataSourceConfig {
    @Bean(name = "twoDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.two")
    public DataSource testDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "twoSqlSessionFactory")
    public SqlSessionFactory testSqlSessionFactory(@Qualifier("twoDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mappers/**/*.xml"));
        return bean.getObject();
    }

    @Bean(name = "twoTransactionManager")
    public DataSourceTransactionManager testTransactionManager(@Qualifier("twoDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean(name = "twoSqlSessionTemplate")
    public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("twoSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
 

.xml分佈：