springboot+springJdbc+postgresql 实现多数据源的配置

背景

最近公司在服务拆迁,接口转移,相同的功能接口到要迁移到对应的服务中,因为时间比较赶,别问为什么没给时间,没人,没资源,但是活还是得干的,为了减少工作量和稳妥的需要分两步走

• 先迁移相关代码,保证包的路径不变,请求接口的路径不变
• 将迁移的相关代码进行迁表迁库(这目前还没做,计划9月实施)

实施

配置文件

数据库配置相关类

import com.alibaba.druid.pool.DruidDataSource;

import java.io.Serializable;
import java.sql.SQLException;

public class JdbcConfig implements Serializable {
 public JdbcConfig() {
    super();
    // TODO Auto-generated constructor stub
 }

 public boolean isDecrypt() {
    return decrypt;
 }

 public void setDecrypt(boolean decrypt) {
    this.decrypt = decrypt;
 }

 public String getDriverClass() {
    return driverClass;
 }

 public void setDriverClass(String driverClass) {
    this.driverClass = driverClass;
 }

 public String getTerminalUrl() { return terminalUrl; }

 public void setTerminalUrl(String terminalUrl) { this.terminalUrl = terminalUrl;   }

 public String getSlaveurl() {
    return slaveurl;
 }

 public void setSlaveurl(String slaveurl) {
    this.slaveurl = slaveurl;
 }

 public String getUsername() {
    return username;
 }

 public void setUsername(String username) {
    this.username = username;
 }

 public String getPassword() {
    return password;
 }

 public void setPassword(String password) {
    this.password = password;
 }

 public int getInitialSize() {
    return initialSize;
 }

 public void setInitialSize(int initialSize) {
    this.initialSize = initialSize;
 }

 public int getMinIdle() {
    return minIdle;
 }

 public void setMinIdle(int minIdle) {
    this.minIdle = minIdle;
 }

 public int getMaxActive() {
    return maxActive;
 }

 public void setMaxActive(int maxActive) {
    this.maxActive = maxActive;
 }

 private boolean decrypt;
 private String driverClass;
 private String terminalUrl;
 private String slaveurl;
 private String username;
 private String password;
 private int initialSize;
 private int minIdle;
 private int maxActive;

 public DruidDataSource mainds() throws SQLException {
    DruidDataSource ds = ds();
    ds.setUrl(terminalUrl);
    return ds;
 }

 public DruidDataSource slaveds() throws SQLException {
    DruidDataSource ds = ds();
    ds.setUrl(slaveurl);
    return ds;
 }

 private DruidDataSource ds() throws SQLException {
    DruidDataSource ds = new DruidDataSource();
    ds.setUrl(terminalUrl);
    ds.setUsername(username);
    ds.setPassword(password);
    ds.setFilters("config");
    ds.setConnectionProperties("config.decrypt=" + decrypt);
    ds.setInitialSize(initialSize);
    ds.setMaxActive(maxActive);
    ds.setTimeBetweenEvictionRunsMillis(60000);
    ds.setMinEvictableIdleTimeMillis(300000);
    ds.setValidationQuery("select 'X'");
    ds.setTestWhileIdle(true);
    ds.setTestOnBorrow(false);
    ds.setTestOnReturn(false);

    System.out.println("terminalUrl: " + terminalUrl);
    return ds;

 }
}

相关配置

@Bean
@ConfigurationProperties(prefix = "jdbc")
public JdbcConfig jdbcConfig() {
 return new JdbcConfig();
}
@Bean
@ConfigurationProperties(prefix = "business.jdbc")
public JdbcConfig businessJdbcConfig() {
 return new JdbcConfig();
}

@Bean(initMethod = "init", destroyMethod = "close")
public DruidDataSource businessDataSource() throws SQLException {
 return businessJdbcConfig().mainds();
}

@Bean(initMethod = "init", destroyMethod = "close")
public DruidDataSource masterDataSource() throws SQLException {
 return jdbcConfig().mainds();
}

@Bean("jdbctemplate")
public JdbcTemplate jdbcTemplate() throws SQLException {
 JdbcTemplate t = new JdbcTemplate();
 t.setDataSource(masterDataSource());
 return t;
}

@Bean("businessJdbctemplate")
public JdbcTemplate businessjdbcTemplate() throws SQLException {
 JdbcTemplate t = new JdbcTemplate();
 t.setDataSource(businessDataSource());
 return t;
}

使用

@Bean
public RobotDataDao robotDataDao() throws SQLException {
 RobotDataDao dao = new RobotDataDao();
 dao.setJdbcTemplate(jdbcTemplate());
 dao.setTableName("t_business_robot_data");
 dao.setPrimaryKey("id");
 dao.setSeqName("seq_t_business");
 return dao;
}

@Bean
public VDeviceDao vdeviceDao() throws SQLException {
 VDeviceDao dao = new VDeviceDao();
 dao.setJdbcTemplate(businessjdbcTemplate());
 dao.setTableName("t_device");
 dao.setPrimaryKey("id");
 dao.setSeqName("seq_t_default");
 return dao;
}

特别注意的,一定要配置的,因为现在有多数据源了就要配置对应的事务配置,单个默认的,多个就要指定

@Configuration
public class TransactionConfig  {
  @Bean
  public PlatformTransactionManager bfscrmTransactionManager(@Qualifier("masterDataSource") DataSource masterDataSource) {
      return new DataSourceTransactionManager(masterDataSource);
  }
}

这就配置好了多个数据源了

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原文链接：https://juejin.cn/post/7003984639924649991