java连接MySQL:
首先导入jar包文件:
下载地址:http://download.csdn.net/detail/chongzi321/5703641
然后:
1 Connection ct = null; 2 Statement sm = null; 3 ResultSet rs = null; 4 5 try{ 6 Class.forName("com.mysql.jdbc.Driver"); 7 ct = DriverManager.getConnection("jdbc:mysql://localhost:3306/数据库名?useUnicode=true&characterEncoding=utf-8","用户名", "密码"); 8 sm = ct.createStatement(); 9 String selectString = "select 字段 from 表名 where 字段 = '属性值'" 10 sm.executeQuery(selectString); 11 } 12 catch(Exception ex){ 13 System.out.print("失败!"); 14 } 15 finally{ 16 try{ 17 if(rs!=null){ 18 rs.close(); 19 } 20 if(sm!=null){ 21 sm.close(); 22 } 23 if(ct!=null){ 24 ct.close(); 25 } 26 27 } 28 catch(Exception ex){ 29 ex.printStackTrace(); 30 } 31 } 32
java连接SQL server:
导入sqljdbc驱动包
这里有驱动包:http://download.csdn.net/download/u011200062/8361465
接下来这样写:
Connection ct = null; Statement sm = null; ResultSet rs = null; try{ Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); String url="jdbc:sqlserver://localhost:1433;DatabaseName=数据库名"; String user="sa"; //登录sql server的用户名和密码 String pwd="123456"; //密码 ct=DriverManager.getConnection(url,user,pwd); sm = ct.createStatement(); rs = sm.executeQuery("select 字段 from 表名 where 字段 = '属性值'"); } catch(Exception ex){ } finally{ try{ if(rs!=null){ rs.close(); } if(sm!=null){ sm.close(); } if(ct!=null){ ct.close(); } } catch(Exception ex){ ex.printStackTrace(); } }
如果java web连不上SQL Server,就需要打开网络协议,参考这位同学: http://blog.csdn.net/stewen_001/article/details/19553173/