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摘要: JSP中连接SQL 2000数据库的问题总结
由于系统需求,最近在开发过程中将系统从原来的MySQL转移到SQL 2000下,其中遇到了诸多问题,花费了我不少时间。现在把我的经验拿出来告诉大家,好让大家少走弯路,节约时间。
首先是SQL 2000数据库的安装问题,在此我主要讲些关于SQL 2000的版本与操作系统的兼容性问题:SQL 2000总共有7个不同版本,适应不同等级用户的需求。
我试了一下,在XP系统下只有“个人开发版”能正常安装而不出现错误,所以大家在安装时要注意,具体安装时的配置参照相关说明就可以了。
下面说明如何连接到SQL 2000数据库,首先当然是要下载JDBC驱动程序,最好去微软官方网站下载,然后将下载到的三个JAR包放入你的WEB应用的WEB-INF/lib/下。接下来编写程序进行测试:
</td></tr></table>/*********************************************** /* /*DBTest.java /* /******************************************* */ import java.sql.*; public class DBTest { Connection con; Statement sta; ResultSet rs; String driver; String url; String user; String pwd; public DBTest() { driver = "com.microsoft.jdbc. sqlserver.SQLServerDriver";; url = "jdbc:microsoft:sqlserver: //localhost:1433;DatabaseName =test"; //test为数据库名 user = "sa"; pwd = "sa"; //请更改为你相应的用户和密码 init(); } public void init() { try{ Class.forName(driver); System.out.println("driver is ok"); con = DriverManager. getConnection(url,user,pwd); System.out.println("conection is ok"); sta = con.createStatement(); rs = sta.executeQuery ("select * from room"); while(rs.next()) System.out.println (rs.getInt("roomNum")); }catch(Exception e) { e.printStackTrace(); } } public static void main(String args[]) //自己替换[] { new DBTest(); } }
</td></tr></table>driver is ok java.sql.SQLException: [Microsoft] [SQLServer 2000 Driver for JDBC] Error establis hing socket. at com.microsoft.jdbc.base. BaseExceptions.createException(Unknown Source ) at com.microsoft.jdbc.base. BaseExceptions.getException(Unknown Source) at com.microsoft.jdbc.base. BaseExceptions.getException(Unknown Source) at com.microsoft.jdbc.sqlserver.tds. TDSConnection. (Unknown Source) at com.microsoft.jdbc.sqlserver. SQLServerImplConnection.open(Unknown Sou rce) at com.microsoft.jdbc.base. BaseConnection.getNewImplConnection(Unknown S ource) at com.microsoft.jdbc.base. BaseConnection.open(Unknown Source) at com.microsoft.jdbc.base. BaseDriver.connect(Unknown Source) at java.sql.DriverManager. getConnection(DriverManager.java:523) at java.sql.DriverManager. getConnection(DriverManager.java:171) at DbTest.init(DbTest.java:32) at DbTest. (DbTest.java:25) at DbTest.main(DbTest.java:46) Press any key to continue...
</td></tr></table>driver is ok conection is ok java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC] [SQLServer]对 象名 'room' 无效。 at com.microsoft.jdbc.base. BaseExceptions.createException(Unknown Source ) at com.microsoft.jdbc.base. BaseExceptions.getException(Unknown Source) at com.microsoft.jdbc.sqlserver.tds. TDSRequest.processErrorToken(Unknown Source) at com.microsoft.jdbc.sqlserver.tds. TDSRequest.processReplyToken(Unknown Source) at com.microsoft.jdbc.sqlserver.tds. TDSExecuteRequest.processReplyToken( Unknown Source) at com.microsoft.jdbc.sqlserver.tds. TDSRequest.processReply(Unknown Sour ce) at com.microsoft.jdbc.sqlserver. SQLServerImplStatement.getNextResultType (Unknown Source) at com.microsoft.jdbc.base. BaseStatement.commonTransitionToState (Unknown Source) at com.microsoft.jdbc.base. BaseStatement.postImplExecu te(Unknown Source) at com.microsoft.jdbc.base. BaseStatement.commonExecute(Unknown Source) at com.microsoft.jdbc.base. BaseStatement.executeQueryInternal (Unknown So urce) at com.microsoft.jdbc.base. BaseStatement.executeQuery(Unknown Source) at DbTest.init(DbTest.java:35) at DbTest. (DbTest.java:25) at DbTest.main(DbTest.java:46) Press any key to continue...
</td></tr></table>driver is ok conection is ok 1001 1002 1003 1004 1005 1006 Press any key to continue...