用JSP编写通用信息发布程序 _JSP实例

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