用JSP编写通用信息发布程序
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
HTML> HEAD> TITLE> 信息发布/TITLE>
META content = "text/html; charset=GB2312" http-equiv = Content-Type>
LINK href ="css_01.css" rel = stylesheet>
META content = "MSHTML 5.00.3103.1000" name =GENERATOR> /HEAD>
BODY>
% @ page contentType=“ text/html; charset=GB2312”% >
% @ page language=“ java” import=“ java .sql .*”% >
jsp: usebean id ="rencommend" scope="page" class="ymbean.opDb"/>
form action =recordmessage.jsp method =post name=sign>
input name=dtkey type=hidden value=ta_routes>
table bgcolor=#d5e8fd border=0 cellspacing=1 width="97%">
tbody>
tr> td nowrap width="45%" height="185">
div align=left>
table bgcolor=#d5e8fd border=0 cellspacing=1 width="100%">
tbody>
tr> td nowrap width="100%" >线路名称:
input maxlength=100 name = routename size=36>
/td>
/tr>
tr>td nowrap width="100%">显示序号:
input maxlength=3 name=routeno size=36>
/td>/tr>
tr>
td width="100%" >游览内容。文字超一行时 ,请您敲 Enter键换行/td>
/tr>
tr>td width="100%" height="162">
TEXTAREA cols=55 name =c04 rows=9>
/TEXTAREA>
/TD>
/TR>/TBODY>/TABLE>/DIV>/TD>/TR>
TR>TD align=middle colspan=2 nowrap>
input name=cmdcommit type=submit value="提交">
/td>/tr>/tbody>/table>
/form>/center>
div>/div>/body>/html>
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