jdbc连接sqlserver数据库

1.下载连接引擎jar

微软官方：https://www.microsoft.com/en-us/download/details.aspx?id=11774

2.载入引擎

注意： 不同版本的引擎driver地址不一样

static final String SQLSERVER_DRIVER = "com.microsoft.sqlserver.jdbc.SQLServerDriver";

// 初始化时调用一次
Class.forName(DBUtils.SQLSERVER_DRIVER);

3.建立数据库链接

static final String SQLSERVER_URL = "jdbc:sqlserver://192.168.1.1:1111;databaseName=xxxx";
static final String USER = "user_";
static final String PASSWORD = "password_";

// 获得数据库连接
Connection conn = DriverManager.getConnection(DBUtils.SQLSERVER_URL + dbName, DBUtils.USER, DBUtils.PASSWORD);

4.执行具体的操作

进行简单的查询操作

/**
* 查询公用方法
*
* @param conn    数据库连接
* @param sql     查询sql
* @param objects sql中的参数
* @author fengzhen
* @version v1.0, 2017/9/4 14:05
*/
public static List> query(Connection conn, String sql, Object[] objects)
       throws SQLException, ClassNotFoundException {
   if (conn == null || sql == null) return null;

   PreparedStatement pstmt = null;
   ResultSet resultSet = null;
   try {
       pstmt = conn.prepareStatement(sql);
       for (int i = 1, j = objects.length; i <= j; i++) {
           pstmt.setObject(i, objects[i - 1]);
       }
       resultSet = pstmt.executeQuery();
       return DBUtils.resultToList(resultSet);
   } finally {
       DBUtils.close(conn, resultSet, pstmt);
   }
}

/**
 * 查询结果转换为List
 *
 * @author fengzhen
 * @version v1.0, 2017/9/4 15:10
 */
public static List> resultToList(ResultSet resultSet)
        throws SQLException {
    ArrayList> result = new ArrayList<>();
    ResultSetMetaData metaData = resultSet.getMetaData();
    int columnCount = metaData.getColumnCount();
    while (resultSet.next()) {
        HashMap map = new HashMap<>();
        for (int i = 1; i <= columnCount; i++) {
            map.put(metaData.getColumnName(i), resultSet.getString(i));
        }
        result.add(map);
    }
    return result;
}

/**
 * 释放链接
 *
 * @author fengzhen
 * @version v1.0, 2017/9/4 14:59
 */
public static void close(Connection conn, ResultSet rs, PreparedStatement ps)
        throws SQLException {
    if (ps != null) {
        ps.close();
    }
    if (rs != null) {
        rs.close();
    }
    if (conn != null) {
        conn.close();
    }
}