Java实战之用hutool-db实现多数据源配置

   <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.45</version>
        </dependency>
        <dependency>
            <groupId>com.microsoft.sqlserver</groupId>
            <artifactId>sqljdbc4</artifactId>
            <version>4.0</version>
        </dependency>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-db</artifactId>
            <version>5.7.22</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.9</version>
        </dependency>

[mysql]
url = jdbc:mysql://127.0.0.1:3306/mydb?characterEncoding=utf-8&useSSL=false&serverTimezone=GMT
username = root
password = 123456
driver = com.mysql.jdbc.Driver
[sqlserver]
url = jdbc:sqlserver://192.168.33.4:1433;DatabaseName=DB
username = sa
password = 123456
driver = com.microsoft.sqlserver.jdbc.SQLServerDriver

/**
     * 测试mysql
     */
    private static void testMysql() {
        DataSource ds = DSFactory.get("mysql");
        Db.use(ds);
        Connection conn = null;
        try {
            conn = ds.getConnection();
            // 插入语句
            SqlExecutor.execute(conn, "insert into t_user (name,age) value ('小张',35)");
            // 更新语句
            SqlExecutor.execute(conn, "update t_user set name='小明002' where id=2 ");
            // 删除语句
            SqlExecutor.execute(conn, "delete from t_user  where id=2 ");
            List<Entity> entityList = SqlExecutor.query(conn, "select * from t_user limit 50", new EntityListHandler());
            for (Entity entity : entityList) {
                System.out.println(entity.get("name"));
            }
        } catch (SQLException e) {
 
        } finally {
            DbUtil.close(conn);
        }
    }
 
    /**
     * 测试sqlserver
     */
    private static void testSqlServer() {
        DataSource ds = DSFactory.get("sqlserver");
        Connection conn = null;
        try {
            conn = ds.getConnection();
            List<Entity> entityList = SqlExecutor.query(conn, "select * from t_user", new EntityListHandler());
            for (Entity entity : entityList) {
                System.out.println(entity.get("username"));
            }
        } catch (SQLException e) {
 
        } finally {
            DbUtil.close(conn);
        }
    }
 
    /**
     * 直接代码写jdbc数据源 不推荐的方式
     */
    private static void testDefineJdbc() {
        DruidDataSource ds = new DruidDataSource();
        ds.setUrl("jdbc:mysql://127.0.0.1:3306/mydb?characterEncoding=utf-8&useSSL=false&serverTimezone=GMT");
        ds.setUsername("root");
        ds.setPassword("12345678");
        Connection conn = null;
        try {
            conn = ds.getConnection();
            List<Entity> entityList = SqlExecutor.query(conn, "select * from t_user", new EntityListHandler());
            for (Entity entity : entityList) {
                System.out.println(entity.get("name"));
            }
        } catch (SQLException e) {
 
        } finally {
            DbUtil.close(conn);
        }
    }