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[Java] springboot后端配置多个数据源、Mysql数据库的便捷方法

编程语言 编程语言 发布于:2021-11-17 13:46 | 阅读数:672 | 评论:0

实现springboot 后端配置多个数据源、Mysql数据库,只需要新建 Mapper、实体类 相应的文件夹,将不同数据源的文件保存到对应的文件夹下,添加绑定数据库配置Config,就可以轻松完成
目录

  • 1、修改application.properties
  • 2、添加绑定数据库配置Config

    • 1)Test1DataSourceConfig.java
    • 2)Test2DataSourceConfig.java


1、修改application.properties
新建 Mapper、实体类 相应的文件夹,将不同数据源的文件保存到对应的文件夹下
# test1 数据库的配置
test1.spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
test1.spring.datasource.jdbc-url=jdbc:mysql://localhost:3306/database1?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT
test1.spring.datasource.username=username
test1.spring.datasource.password=password
# test2 数据库的配置
test2.spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
test2.spring.datasource.jdbc-url=jdbc:mysql://localhost:3306/database2?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT
test2.spring.datasource.username=username
test2.spring.datasource.password=password
# 配置 mybatis 配置 mapper.xml 文件路径mybatis.mapper-locations=classpath:/mapper/*.xml,classpath:/mapper/test1/*.xml,classpath:/mapper/test2/*.xml
# 配置 mybatis 配置 实体类 文件路径
mybatis.type-aliases-package=com.xxx.entity.test1, com.xxx.entity.test2
2、添加绑定数据库配置Config

1)Test1DataSourceConfig.java
package com.xxx.config.dataSource;
import com.alibaba.druid.pool.DruidDataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
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;
/** * @program: test1 主数据源配置
* @author: JackLee 
* @create: 2020-08-09 09:30 
* @version: 1.0
**/// 
扫描 Mapper 接口并容器管理
@MapperScan(basePackages = Test1DataSourceConfig.PACKAGE, sqlSessionFactoryRef = "test1SqlSessionFactory")
@Configuration
public class Test1DataSourceConfig {
// 精确到 test1 目录,以便跟其他数据源隔离 
static final String PACKAGE = "com.xxx.dao.test1"; 
static final String MAPPER_LOCATION = "classpath:mapper/test1/*.xml"; 
@Value("${test1.spring.datasource.jdbc-url}") 
private String url; 
@Value("${test1.spring.datasource.username}") 
private String user; 
@Value("${test1.spring.datasource.password}") 
private String password; 
@Value("${test1.spring.datasource.driver-class-name}") 
private String driverClass; 
@Bean(name = "test1DataSource") 
@Primary
public DataSource test1DataSource() {
DruidDataSource dataSource = new DruidDataSource(); 
dataSource.setDriverClassName(driverClass); 
dataSource.setUrl(url); 
dataSource.setUsername(user); 
dataSource.setPassword(password); 
return dataSource; 
} 
@Bean(name = "test1TransactionManager") 
@Primary
public DataSourceTransactionManager test1TransactionManager() { 
return new DataSourceTransactionManager(test1DataSource()); 
} 
@Bean(name = "test1SqlSessionFactory") 
@Primary
public SqlSessionFactory test1SqlSessionFactory(@Qualifier("test1DataSource") DataSource test1DataSource) 
throws Exception { 
final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean(); 
sessionFactory.setDataSource(test1DataSource); 
sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver() 
.getResources(Test1DataSourceConfig.MAPPER_LOCATION)); 
return sessionFactory.getObject(); 
}
 
}
2)Test2DataSourceConfig.java
package com.xxx.config.dataSource;
import com.alibaba.druid.pool.DruidDataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
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;
/** 
* @program: test2 其他数据源配置 
* @author: JackLee 
* @create: 2020-08-09 09:30 
* @version: 1.0 
**/
// 扫描 Mapper 接口并容器管理
@MapperScan(basePackages = Test2DataSourceConfig.PACKAGE, sqlSessionFactoryRef = "test2SqlSessionFactory")
@Configuration
public class Test2DataSourceConfig {   
 // 精确到 test2 目录,以便跟其他数据源隔离  
 static final String PACKAGE = "com.xxx.dao.test2";  
 static final String MAPPER_LOCATION = "classpath:mapper/test2/*.xml";   
 
 @Value("${test2.spring.datasource.jdbc-url}")  
 private String url;   
 
 @Value("${test2.spring.datasource.username}")  
 private String user;   
 
 @Value("${test2.spring.datasource.password}")  
 private String password;   
 
 @Value("${test2.spring.datasource.driver-class-name}")   
 private String driverClass;  
 
 @Bean(name = "test2DataSource")  
 public DataSource test2DataSource() {     
 DruidDataSource dataSource = new DruidDataSource();    
 dataSource.setDriverClassName(driverClass);    
 dataSource.setUrl(url);    
 dataSource.setUsername(user);    
 dataSource.setPassword(password);    
 return dataSource;  
 }   
 @Bean(name = "test2TransactionManager")   
 public DataSourceTransactionManager test2TransactionManager() {     
 return new DataSourceTransactionManager(test2DataSource());  
 }  
 @Bean(name = "test2SqlSessionFactory")   
 public SqlSessionFactory test2SqlSessionFactory(@Qualifier("test2DataSource") DataSource test2DataSource)       
 throws Exception {     
 final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();    
 sessionFactory.setDataSource(test2DataSource);    
 sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()        
 .getResources(Test2DataSourceConfig.MAPPER_LOCATION));
 return sessionFactory.getObject();  }
 
}
搞定,轻轻松松~
注:

  • mapper文件夹下新建的文件夹需要有 *.xml 文件( 即:classpath:/mapper/xxx/*.xml下要存在文件 ),不然可能检测不到
  • 需要继续添加数据源就再加一个其他数据源
以上就是方便快捷实现springboot 后端配置多个数据源、Mysql数据库的详细内容,更多关于springboot 后端配置多个数据源、Mysql数据库的资料请关注CodeAE代码之家其它相关文章!希望大家以后多多支持CodeAE代码之家!
原文链接:https://blog.csdn.net/weixin_42280984/article/details/119530437

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