作者:80后之多管闲事 | 来源:互联网 | 2022-03-06 21:23
信息发布界面
提供发布信息的交互界面,调用 recordMessage.jsp程序。
sayMessage.jsp
<% @ page cOntentType=“ text/html; charset=GB2312”% >
<% @ page language=“ java” import=“ java .sql .*”% >
连接数据库
通过调用 Java Bean连接 Oracle数据库。
opDb.java
package ymbean; // java包
import java.sql.* ;
public class opDb {
public opDb() { }
public ResultSet executeQuery(String sql)
{
ResultSet rs = null;
Statement lstmt = null;
try { lstmt = connectdb();
rs = lstmt.executeQuery(sql);
System.out.println(“ executeQuery:”+ sql);
} catch(SQLException ex) { return(null); }
return rs;
}
public String executeUpdate(String sql)
{
ResultSet rs = null;
Statement lstmt = null;
try {
lstmt = connectdb();
lstmt.executeUpdate(sql);
System.out.println(“ executeUpdate:”+ sql);
lstmt.executeUpdate(“ commit” );
}catch(SQLException ex) {}
return(“ executeUpdate ok” );
}
//连接数据库
public Statement connectdb()
{ Statement lstmt=null;
Connection cOnn=null;
final String connect_string=“ jdbc:oracle:thin:scott/tiger@192.168.0.1:1521:test” ;
final String driver_string=“ oracle.jdbc.driver.
OracleDriver” ;
Connection lconn;
try { Class.forName(driverstr);
lcOnn=DriverManager.getConnection(connectstr);
lstmt=lconn.createStatement();
} catch (Exception e) { return(null);}
return lstmt;
}
}//end opDb.java