1、配置類程式碼

import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
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.jdbc.core.JdbcTemplate;

import javax.sql.DataSource;
import java.sql.SQLException;
@Configuration
@EnableAutoConfiguration
public class DbsourceConfig {

@Value("${spring.datasource.driver-class-name}")
private String driverClassName;
@Value("${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.useGlobalDataSourceStat}")
private boolean useGlobalDataSourceStat;


/*******************************資料來源1*******************/
@Value("${spring.datasource.url}")
private String dbUrl;
@Value("${spring.datasource.username}")
private String username;
@Value("${spring.datasource.password}")
private String password;
/*******************************資料來源2*******************/
@Value("${spring.datasource.finance.url}")
private String financeDbUrl;
@Value("${spring.datasource.finance.username}")
private String financeUsername;
@Value("${spring.datasource.finance.password}")
private String financePassword;






@Bean(name = "usersdataSource")     //宣告其為Bean例項
                  //在同樣的DataSource中，首先使用被標註的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.setUseGlobalDataSourceStat(useGlobalDataSourceStat);
    try {
        datasource.setFilters(filters);
    } catch (SQLException e) {
        System.err.println("druid configuration initialization filter: "+ e);
    }
    datasource.setConnectionProperties(connectionProperties);
    return datasource;
}


/**
 * mysql資料 jdbc連線
 * @return
 */
@Bean(name = "jdbcOperation")
public JdbcTemplate getGraphicDataDS(@Qualifier("usersdataSource") DataSource dataSource){
    return new JdbcTemplate(dataSource, true);

}







/****************************  資料來源2   *****************************/

@Bean(name = "financeDataSource")     //宣告其為Bean例項
public DataSource financeDataSource(){
    DruidDataSource datasource = new DruidDataSource();
    datasource.setUrl(this.financeDbUrl);
    datasource.setUsername(this.financeUsername);
    datasource.setPassword(this.financePassword);
    datasource.setDriverClassName(driverClassName);
    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.setUseGlobalDataSourceStat(useGlobalDataSourceStat);
    try {
        datasource.setFilters(filters);
    } catch (SQLException e) {
        System.err.println("druid configuration initialization filter: "+ e);
    }
    datasource.setConnectionProperties(connectionProperties);
    return datasource;
}

@Bean(name = "financejdbc")
public JdbcTemplate getFinanceDS(@Qualifier("financeDataSource") DataSource dataSource) {
    return new JdbcTemplate(dataSource,true);
}


/**
 * 業務hana源
 * 原來是從資料庫中讀取的配置現在把他抽取出來,
 * 因為基本業務型別確定後基本不會改變而且這種方式構造連線池不方便也沒有必要
 *
 * @return
 */
@Bean(name = "serviceHanaDataSource")
@Qualifier("serviceHanaDataSource")
@ConfigurationProperties(prefix = "service.hana.datasource")
public DataSource getServiceHanaDataSource() {
    return DataSourceBuilder.create().build();
}

@Bean(name = "serviceHanaJdbcTemplate")
public JdbcTemplate getServiceHanaJdbcTemplate(@Qualifier("serviceHanaDataSource") DataSource dataSource) {
    return new JdbcTemplate(dataSource);
}
 

}

使用時直接
@Resource
private JdbcTemplate financejdbc;
@Autowired
private JdbcTemplate jdbcOperation;