spring boot如何设置两个数据源

废话不多说  直接上配置代码


import com.alibaba.druid.pool.DruidDataSource;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
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.context.annotation.Primary;
import org.springframework.jdbc.core.JdbcTemplate;

import javax.sql.DataSource;

import java.sql.SQLException;

@Configuration
public class DruidDBConfig {  
    private Logger logger = LoggerFactory.getLogger(DruidDBConfig.class);
      
    @Value("${spring.datasource.url}")
    private String dbUrl;  
      
    @Value("${spring.datasource.username}")
    private String username;  
      
    @Value("${spring.datasource.password}")
    private String password;  
      
    @Value("${spring.datasource.driverClassName}")
    private String driverClassName;  
      
    @Value("${spring.datasource.initialSize}")
    private int initialSize;  
      
    @Value("${spring.datasource.minIdle}")
    private int minIdle;  
      
    @Value("${spring.datasource.maxActive}")
    private int maxActive;  
      
    @Value("${spring.datasource.maxWait}")
    private int maxWait;  
      
    @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
    private int timeBetweenEvictionRunsMillis;  
      
    @Value("${spring.datasource.minEvictableIdleTimeMillis}")
    private int minEvictableIdleTimeMillis;  
      
    @Value("${spring.datasource.validationQuery}")
    private String validationQuery;  
      
    @Value("${spring.datasource.testWhileIdle}")
    private boolean testWhileIdle;  
      
    @Value("${spring.datasource.testOnBorrow}")
    private boolean testOnBorrow;  
      
    @Value("${spring.datasource.testOnReturn}")
    private boolean testOnReturn;  
      
    @Value("${spring.datasource.poolPreparedStatements}")
    private boolean poolPreparedStatements;  
      
    //@Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")  
    //private int maxPoolPreparedStatementPerConnectionSize;  
      
    @Value("${spring.datasource.filters}")
    private String filters;  
      
    @Value("${spring.datasource.connectionProperties}")
    private String connectionProperties;  
    
    @Value("${spring.datasource.removeAbandoned}")
    private boolean removeAbandoned;
    
    @Value("${spring.datasource.removeAbandonedTimeout}")
    private int removeAbandonedTimeout;
    
//    @Value("${spring.datasource.connectionInitSqls}")
//    private String connectionInitSqls;

    
    @Value("${spring.datasource.keepAlive}")
    private boolean keepAlive;
      
    @Bean     //声明其为Bean实例
    @Primary  //在同样的DataSource中,首先使用被标注的DataSource
    public DataSource dataSource(){  
        DruidDataSource datasource = new DruidDataSource();
          
        datasource.setUrl(this.dbUrl);  
        datasource.setUsername(username);  
        datasource.setPassword(password);  
        datasource.setDriverClassName(driverClassName);  
          
        //configuration  
        datasource.setInitialSize(initialSize);  
        datasource.setMinIdle(minIdle);  
        datasource.setMaxActive(maxActive);  
        datasource.setMaxWait(maxWait);  
        datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);  
        datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);  
        datasource.setValidationQuery(validationQuery);  
        datasource.setTestWhileIdle(testWhileIdle);  
        datasource.setTestOnBorrow(testOnBorrow);  
        datasource.setTestOnReturn(testOnReturn);  
        datasource.setPoolPreparedStatements(poolPreparedStatements);  
        //datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
        datasource.setRemoveAbandoned(removeAbandoned);
        datasource.setRemoveAbandonedTimeout(removeAbandonedTimeout); //秒
        datasource.setKeepAlive(keepAlive);
       
        //Collection collection=new ArrayList();
        //collection.add(connectionInitSqls);
        //datasource.setConnectionInitSqls(collection);
        try {  
            datasource.setFilters(filters);  
        } catch (SQLException e) {  
            logger.error("druid configuration initialization filter", e);  
        }  
        datasource.setConnectionProperties(connectionProperties);  
          
        return datasource;  
    }  
    
    
  @Value("${spring.datasource.secondary.url}")
  private String pgdbUrl;  
    
  @Value("${spring.datasource.secondary.username}")
  private String pgusername;  
    
  @Value("${spring.datasource.secondary.password}")
  private String pgpassword;  
    
  @Value("${spring.datasource.secondary.driver-class-name}")
  private String pgdriverClassName;  
    
    @Bean(name = "secondaryDataSource")
    public DataSource secondaryDataSource() {
        DruidDataSource datasource2 = new DruidDataSource();
        
        datasource2.setUrl(this.pgdbUrl);  
        datasource2.setUsername(pgusername);  
        datasource2.setPassword(pgpassword);  
        datasource2.setDriverClassName(pgdriverClassName);  
          
        //configuration  
        datasource2.setInitialSize(initialSize);  
        datasource2.setMinIdle(minIdle);  
        datasource2.setMaxActive(maxActive);  
        datasource2.setMaxWait(maxWait);  
        datasource2.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);  
        datasource2.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);  
        datasource2.setValidationQuery(validationQuery);  
        datasource2.setTestWhileIdle(testWhileIdle);  
        datasource2.setTestOnBorrow(testOnBorrow);  
        datasource2.setTestOnReturn(testOnReturn);  
        datasource2.setPoolPreparedStatements(poolPreparedStatements);  
        //datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
        datasource2.setRemoveAbandoned(removeAbandoned);
        datasource2.setRemoveAbandonedTimeout(removeAbandonedTimeout); //秒
        datasource2.setKeepAlive(keepAlive);
       
        //Collection collection=new ArrayList();
        //collection.add(connectionInitSqls);
        //datasource.setConnectionInitSqls(collection);
        try {  
            datasource2.setFilters(filters);  
        } catch (SQLException e) {  
            logger.error("druid configuration initialization filter", e);  
        }  
        datasource2.setConnectionProperties(connectionProperties);  
          
        return datasource2;  
    }
    //这个第二个数据源,每次使用需要注入secondaryJdbcTemplate 就可以使用了
    @Bean(name = "secondaryJdbcTemplate")
    public JdbcTemplate secondaryJdbcTemplate() {
        return new JdbcTemplate(secondaryDataSource());

    }

}
 

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