jdbc数据连接

Java代码  

/** 数据库连接*/
public class BaseDao {
    public final static String quDong = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; // 数据库驱动
    public final static String duanKOu = "jdbc:sqlserver://localhost:1433;databasename = news";// jdbc:sqlservier://数据库IP:端口号;DatabaseName=数据库
    public final static String name = "sa";// 数据库名字
    public final static String miMa = "sa";// 密码
    protected Statement stmt;
    protected ResultSet rs;

/** 关闭所有连接 */
    public void closeAll(ResultSet rs, PreparedStatement pretmt, Connection conn) {
        if (rs != null) {
            try {
                rs.close();
            } catch (Exception e) {
                e.printStackTrace();

            }
        }
        if (pretmt != null) {
            try {
                pretmt.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        if (conn != null) {
            try {
                conn.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

/**返回数据库连接*/
    public Connection fanHuiShuJuKuLianJie() {
        Connection connetion = null;
        try {
            Class.forName(quDong);
            connetion = DriverManager.getConnection(duanKOu, name, miMa);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return connetion;
    }

/**执行SQL语句，可进行增，删，改*/
    public int ShuJuKuChaoZuo(String Sql, String[] param) {
        Connection con = null;
        PreparedStatement pstmt = null;
        ResultSet rs = null;
        int num = 0;
        try {
            con = fanHuiShuJuKuLianJie();// 得到数据库连接
            pstmt = con.prepareStatement(Sql);
            if (param != null) {
                for (int i = 0; i < param.length; i++) {
                    pstmt.setString(i + 1, param[i]);// 设置参数
                }
            }
            num = pstmt.executeUpdate();// 执行SQL语句
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            closeAll(rs, pstmt, con);
        }
        return num;
    }

    public static String getStr(String info) {
        try {
            byte[] b = info.getBytes("ISO-8859-1");
            return new String(b, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return "";
        }

    }
}