springboot配置多數(shù)據(jù)源

依賴 pom.xml

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        
        <!-- oracle驅(qū)動 -->
        <!-- 可能在maven倉庫中找不到翎承，需要下載jar包，加載進(jìn)本地倉庫    -->
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc6</artifactId>
            <version>6.0</version>
        </dependency>
        
        <!-- mysql驅(qū)動 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!-- druid數(shù)據(jù)源驅(qū)動 -->
        <dependency>
           <groupId>com.alibaba</groupId>
           <artifactId>druid-spring-boot-starter</artifactId>
           <version>1.1.6</version>
        </dependency>

配置文件application.yml

server:
  context-path: /web

spring:
  datasource:
    druid:
      # 數(shù)據(jù)庫訪問配置, 使用druid數(shù)據(jù)源
      # 數(shù)據(jù)源1 mysql
      mysql:
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.jdbc.Driver
        url: jdbc:mysql://10.0.0.3:3306/test?useUnicode=true&characterEncoding=UTF-8&rewriteBatchedStatements=true&autoReconnect=true&failOverReadOnly=false&zeroDateTimeBehavior=convertToNull
        username: root
        password: root
      # 數(shù)據(jù)源2 oracle
      oracle: 
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: oracle.jdbc.driver.OracleDriver
        url: jdbc:oracle:thin:@localhost:1521:ORCL
        username: c##abc
        password: 123456
        
      # 連接池配置
      initial-size: 5
      min-idle: 5
      max-active: 20
      # 連接等待超時時間
      max-wait: 30000
      # 配置檢測可以關(guān)閉的空閑連接間隔時間
      time-between-eviction-runs-millis: 60000
      # 配置連接在池中的最小生存時間
      min-evictable-idle-time-millis: 300000
      validation-query: select '1' from dual
      test-while-idle: true
      test-on-borrow: false
      test-on-return: false
      # 打開PSCache料滥，并且指定每個連接上PSCache的大小
      pool-prepared-statements: true
      max-open-prepared-statements: 20
      max-pool-prepared-statement-per-connection-size: 20
      # 配置監(jiān)控統(tǒng)計攔截的filters, 去掉后監(jiān)控界面sql無法統(tǒng)計, 'wall'用于防火墻
      filters: stat,wall
      # Spring監(jiān)控AOP切入點开财，如x.y.z.service.*,配置多個英文逗號分隔
      aop-patterns: com.springboot.servie.*
      
    
      # WebStatFilter配置
      web-stat-filter:
        enabled: true
        # 添加過濾規(guī)則
        url-pattern: /*
        # 忽略過濾的格式
        exclusions: '*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*'
      
      # StatViewServlet配置 
      stat-view-servlet:
        enabled: true
        # 訪問路徑為/druid時，跳轉(zhuǎn)到StatViewServlet
        url-pattern: /druid/*
        # 是否能夠重置數(shù)據(jù)
        reset-enable: false
        # 需要賬號密碼才能訪問控制臺
        login-username: druid
        login-password: druid123
        # IP白名單
        # allow: 127.0.0.1
        #　IP黑名單（共同存在時，deny優(yōu)先于allow）
        # deny: 192.168.1.218
      
      # 配置StatFilter
      filter: 
        stat: 
          log-slow-sql: true

配置多數(shù)據(jù)源

mysql:

MysqlDatasourceConfig.class

Configuration
// 指定掃描的mapper包
@MapperScan(basePackages = "com.springboot.mysqlDao", sqlSessionFactoryRef = "mysqlSqlSessionFactory")
public class MysqlDatasourceConfig {


    // mybatis mapper掃描路徑
    private static final String MAPPER_LOCATION = "classpath:mapper/mysql/*.xml";

    @Primary
    @Bean(name = "mysqldatasource")
    // 使用yml里的配置配置數(shù)據(jù)源builder
    @ConfigurationProperties("spring.datasource.druid.mysql")
    public DataSource mysqlDataSource() {
        return DruidDataSourceBuilder.create().build();
    }

    @Bean(name = "mysqlTransactionManager")
    @Primary
    public DataSourceTransactionManager mysqlTransactionManager() {
        return new DataSourceTransactionManager(mysqlDataSource());
    }

    @Bean(name = "mysqlSqlSessionFactory")
    @Primary
    public SqlSessionFactory mysqlSqlSessionFactory(@Qualifier("mysqldatasource") DataSource dataSource)
            throws Exception {
        final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource);
        //如果不使用xml的方式配置mapper，則可以省去下面這行mapper location的配置泪勒。
        sessionFactory.setMapperLocations(
                new PathMatchingResourcePatternResolver().getResources(MysqlDatasourceConfig.MAPPER_LOCATION));
        return sessionFactory.getObject();
    }
}

oracle：

OracleDatasourceConfig.class

@Configuration
@MapperScan(basePackages = "com.springboot.oracleDao",
    sqlSessionFactoryRef = "oracleSqlSessionFactory")
public class OracleDatasourceConfig {
    

    // mybatis mapper掃描路徑
    static final String MAPPER_LOCATION = "classpath:mapper/oracle/*.xml";
    
    @Bean(name = "oracledatasource")
    @ConfigurationProperties("spring.datasource.druid.oracle")
    public DataSource oracleDataSource() {
        return DruidDataSourceBuilder.create().build();
    }
    
    @Bean(name = "oracleTransactionManager")
    public DataSourceTransactionManager oracleTransactionManager() {
        return new DataSourceTransactionManager(oracleDataSource());
    }
 
    @Bean(name = "oracleSqlSessionFactory")
    public SqlSessionFactory oracleSqlSessionFactory(@Qualifier("oracledatasource") DataSource dataSource) throws Exception {
        final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource);
        //如果不使用xml的方式配置mapper，則可以省去下面這行mapper location的配置减途。
        sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
                .getResources("classpath:mapper/oracle/*.xml"));
        return sessionFactory.getObject();
    }
}

mapper文件

mysql：MysqlStudentMapper.class

package com.springboot.mysqlDao;
@Mapper
public interface MysqlStudentMapper {
   List<Map<String, Object>> getAllStudents();
}

oracle: OracleStudentMapper.class

package com.springboot.oracleDao;
@Mapper
public interface OracleStudentMapper {
   List<Map<String, Object>> getAllStudents();
}

service調(diào)用:

@Service
public class StudentServiceImp implements StudentService{
    @Autowired
    private OracleStudentMapper oracleStudentMapper;
    @Autowired
    private MysqlStudentMapper mysqlStudentMapper;
    
    @Override
    public List<Map<String, Object>> getAllStudentsFromOralce() {
        return this.oracleStudentMapper.getAllStudents();
    }

    @Override
    public List<Map<String, Object>> getAllStudentsFromMysql() {
        return this.mysqlStudentMapper.getAllStudents();
    }
}