springboot+druid雙數據源動態配置
進行動態切換，需要在類裏面配置，順便解決mybatis-plus自帶代碼無法使用問題，直接上代碼：
一.yml配置：
數據源可以都是oracle的也可以一個是oracle一個是mysql的。
spring:
datasource:
druid:
db-type: com.alibaba.druid.pool.DruidDataSource
#多數據源1:
zjdb:
driverClassName: oracle.jdbc.driver.OracleDriver
url: jdbc:oracle:thin:@XX.XX.XX.XX:1521/ORCL
username: XXXXXXX
password: XXX
# \u521D\u59CB\u5316\u8FDE\u63A5\u5927\u5C0F
initial-size: 5
# \u6700\u5C0F\u7A7A\u95F2\u8FDE\u63A5\u6570
min-idle: 5
max-active: 20
max-wait: 30000
# \u53EF\u5173\u95ED\u7684\u7A7A\u95F2\u8FDE\u63A5\u95F4\u9694\u65F6\u95F4
time-between-eviction-runs-millis: 60000
# \u914D\u7F6E\u8FDE\u63A5\u5728\u6C60\u4E2D\u7684\u6700\u5C0F\u751F\u5B58\u65F6\u95F4
min-evictable-idle-time-millis: 300000
validation-query: select '1' from dual
test-while-idle: true
test-on-borrow: false
test-on-return: false
# \u6253\u5F00PSCache\uFF0C\u5E76\u4E14\u6307\u5B9A\u6BCF\u4E2A\u8FDE\u63A5\u4E0APSCache\u7684\u5927\u5C0F
pool-prepared-statements: true
max-open-prepared-statements: 20
max-pool-prepared-statement-per-connection-size: 20
# \u914D\u7F6E\u76D1\u63A7\u7EDF\u8BA1\u62E6\u622A\u7684filters
filters: stat
#多數據源2:
zjfz:
driverClassName: oracle.jdbc.driver.OracleDriver
url: jdbc:oracle:thin:@XX.XX.XX.XX:51521/ORCL
username: XXXXX
password: XXXX
# driverClassName: com.mysql.jdbc.Driver
# url: jdbc:mysql://127.0.0.1:3306/ketech-dev?serverTimezone=Asia/Shanghai&characterEncoding=utf8&useSSL=false&allowMultiQueries=true&allowPublicKeyRetrieval=true
# username: root
# password: 123456
# \u521D\u59CB\u5316\u8FDE\u63A5\u5927\u5C0F
initial-size: 5
# \u6700\u5C0F\u7A7A\u95F2\u8FDE\u63A5\u6570
min-idle: 5
max-active: 20
max-wait: 30000
# \u53EF\u5173\u95ED\u7684\u7A7A\u95F2\u8FDE\u63A5\u95F4\u9694\u65F6\u95F4
time-between-eviction-runs-millis: 60000
# \u914D\u7F6E\u8FDE\u63A5\u5728\u6C60\u4E2D\u7684\u6700\u5C0F\u751F\u5B58\u65F6\u95F4
min-evictable-idle-time-millis: 300000
validation-query: select '1' from dual
test-while-idle: true
test-on-borrow: false
test-on-return: false
# \u6253\u5F00PSCache\uFF0C\u5E76\u4E14\u6307\u5B9A\u6BCF\u4E2A\u8FDE\u63A5\u4E0APSCache\u7684\u5927\u5C0F
pool-prepared-statements: true
max-open-prepared-statements: 20
max-pool-prepared-statement-per-connection-size: 20
# \u914D\u7F6E\u76D1\u63A7\u7EDF\u8BA1\u62E6\u622A\u7684filters
filters: stat
stat-view-servlet:
url-pattern: /druid/*
reset-enable: false
login-username: admin
login-password: 123456
web-stat-filter:
url-pattern: /*
exclusions: "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*"
二：動態切換數據源配置文件
1.數據源db1：
package yin.ketech.app.config;
import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
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.core.io.support.ResourcePatternResolver;
import javax.sql.DataSource;
/**
* @FileName: ZjDbConfig
* @Author Yep
* @create 2020-06-17
* @Description: 多數據源-1
*/
@Configuration
@MapperScan(basePackages = "yin.ketech.app.mapper", sqlSessionFactoryRef = "zjdbSqlSessionFactory")
public class ZjDbConfig {
@Primary
@Bean(name = "zjdbDataSource")
@Qualifier("zjdbDataSource")
@ConfigurationProperties(prefix = "spring.datasource.zjdb")
public DataSource zjdbDataSource() {
return DruidDataSourceBuilder.create().build();
}
@Primary
@Bean(name = "zjdbSqlSessionFactory")
@Qualifier("zjdbSqlSessionFactory")
public SqlSessionFactory zjdbSqlSessionFactory(@Qualifier("zjdbDataSource") DataSource zjdbDataSource) throws Exception {
// SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
// factoryBean.setDataSource(zjdbDataSource);
//解決無法使用自帶方法問題
// TODO 使用 MybatisSqlSessionFactoryBean 而不是 SqlSessionFactoryBean
MybatisSqlSessionFactoryBean factory = new MybatisSqlSessionFactoryBean();
factory.setDataSource(zjdbDataSource);
//添加XML目錄
ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
try {
factory.setMapperLocations(resolver.getResources("classpath:/yin/ketech/app/mapper/*/*.xml"));
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
}
//解決無法使用分頁問題
// factory.setPlugins(new Interceptor[]{new MybatisPlusConfig().paginationInterceptor()});
//設置Oracle主鍵自增
factory.setGlobalConfig(new MybatisPlusConfig().globalConfig());
return factory.getObject();
}
@Primary
@Bean(name = "zjdbSqlSessionTemplate")
public SqlSessionTemplate zjdbSqlSessionTemplate(@Qualifier("zjdbSqlSessionFactory") SqlSessionFactory zjdbSqlSessionFactory) throws Exception {
// 使用上面配置的Factory
SqlSessionTemplate template = new SqlSessionTemplate(zjdbSqlSessionFactory);
return template;
}
}
2..數據源db2：
package yin.ketech.app.config;
import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
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.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.core.io.support.ResourcePatternResolver;
import javax.sql.DataSource;
/**
* @FileName: ZjFzConfig
* @Author Yep
* @create 2020-06-17
* @Description: 多數據源-2
*/
@Configuration
@MapperScan(basePackages = "yin.ketech.app.zjfzmapper", sqlSessionFactoryRef = "zjfzSqlSessionFactory")
public class ZjFzConfig {
@Bean(name = "zjfzDataSource")
@Qualifier("zjfzDataSource")
@ConfigurationProperties(prefix = "spring.datasource.zjfz")
public DataSource zjfzDataSource() {
return DruidDataSourceBuilder.create().build();
}
@Bean(name = "zjfzSqlSessionFactory")
@Qualifier("zjfzSqlSessionFactory")
public SqlSessionFactory zjfzSqlSessionFactory(@Qualifier("zjfzDataSource") DataSource zjfzDataSource) throws Exception {
SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
factoryBean.setDataSource(zjfzDataSource);
//添加XML目錄
ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
try {
factoryBean.setMapperLocations(resolver.getResources("classpath:/yin/ketech/app/mapper/zjfz/mapper/*.xml"));
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
}
return factoryBean.getObject();
}
@Bean(name = "zjfzSqlSessionTemplate")
public SqlSessionTemplate zjfzSqlSessionTemplate(@Qualifier("zjfzSqlSessionFactory") SqlSessionFactory zjfzSqlSessionFactory) throws Exception {
// 使用上面配置的Factory
SqlSessionTemplate template = new SqlSessionTemplate(zjfzSqlSessionFactory);
return template;
}
}
三：多數據源的mapper包最好是分開，在掃描的時候會動態注入，可能在上述代碼中會導致數據源自動切換失敗：
四：代碼中調用：
總結：
1.注意動態配置的類結合自己的包項目結構修改
2.解決了mybatis-plus自帶語句不能使用問題
3.解決無法使用分頁問題
4.解決無法使用oracle自增主鍵問題