用JSP编写通用信息发布程序


答案：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
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