《注册jdbc驱动程序的三种方式.docx》由会员分享，可在线阅读，更多相关《注册jdbc驱动程序的三种方式.docx（3页珍藏版）》请在三一办公上搜索。
1、注册jdbc驱动程序的三种方式注册jdbc驱动程序的三种方式 1、比较常用 try Class.forName(com.mysql.jdbc.Driver);/加载数据库驱动 String url=jdbc:mysql:/localhost:3306/databasename;/数据库连接子协议 Connection conn=DriverManager.getConnection(url,username,password); Statement stmt=conn.createStatement; ResultSet rs=stmt.executeQuery(select * from t
2、ablename); while(rs.next)/不断指向下一条记录 System.out.println(DeptNo:+rs.getInt(1); System.out.println(tDeptName:+rs.getString(2); System.out.println(tLOC:+rs.getString(3); rs.close; stmt.close; conn.close; catch(ClassNotFoundException e) System.out.println(找不到指定的驱动程序类！); catch(SQLException e) e.printStack
3、Trace; 2、通过系统的属性设置 try System.setProperty(jdbc.driver,com.mysql.jdbc.Driver);/系统属性指定数据库驱动 String url=jdbc:mysql:/localhost:3306/databasename;/数据库连接子协议 Connection conn=DriverManager.getConnection(url,username,password); Statement stmt=conn.createStatement; ResultSet rs=stmt.executeQuery(select * from
4、 tablename); while(rs.next)/不断指向下一条记录 System.out.println(DeptNo:+rs.getInt(1); System.out.println(tDeptName:+rs.getString(2); System.out.println(tLOC:+rs.getString(3); rs.close; stmt.close; conn.close; catch(SQLException e) e.printStackTrace; 3、看起来比较直观的一种方式，注册相应的db的jdbc驱动，3在编译时需要导入对应的lib try new com
5、.mysql.jdbc.Driver;/创建driver对象，加载数据库驱动 String url=jdbc:mysql:/localhost:3306/databasename;/数据库连接子协议 Connection conn=DriverManager.getConnection(url,username,password); Statement stmt=conn.createStatement; ResultSet rs=stmt.executeQuery(select * from tablename); while(rs.next)/不断指向下一条记录 System.out.println(DeptNo:+rs.getInt(1); System.out.println(tDeptName:+rs.getString(2); System.out.println(tLOC:+rs.getString(3); rs.close; stmt.close; conn.close; catch(SQLException e) e.printStackTrace;
