在程序中访问(WebSphere6.1)Was中数据源

在程序中访问(WebSphere6.1)Was中数据源

2012年6月21日15:21:59

程序代码下载：
http://www.blogjava.net/Files/heyang/ViewDsSample.zip
注意这个程序是RSA中的Dynamic Web Project


如果需要建立数据源，请参考：
http://www.blogjava.net/heyang/archive/2012/06/21/381257.html

如果需要建立JDBC Provider，请参考：
http://www.blogjava.net/heyang/archive/2012/06/21/381254.html

由于是示例代码，所以比较简单，功能就是访问数据库中一张表，然后把数据在表格中显示出来。index.jsp中的代码如下：

<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd" >
<% @ page language = " java "  autoFlush = " true "  isThreadSafe = " true "  buffer = " 10kb "   %>
<% @ page import = " javax.servlet.http.* " %>
<% @ page import = " java.util.*,java.lang.*,java.math.* " %>


<% @ page import = " java.sql.Connection " %>
<% @ page import = " java.sql.DriverManager " %>
<% @ page import = " java.sql.Statement " %>
<% @ page import = " javax.naming.Context " %>
<% @ page import = " javax.naming.InitialContext " %>
<% @ page import = " javax.sql.DataSource " %>
<% @ page import = " java.sql.ResultSet " %>


< html >
     < head >
         < title > View DataSource In Was </ title >
     </ head >
    
     < body >
         < table  width ="100px"  border ="1" >
         < caption > Visit the data in DataSource </ caption >     
         < thead >
         < tr >
             < td  width ="50px" > Id </ td >
             < td  width ="50px" > Name </ td >
         </ tr >     
         </ thead >
         < tbody >
         <%
            Context ctx =   new  InitialContext();
            DataSource ds  =  (DataSource) ctx.lookup( " jdbc/localdb2 " ); // 注意这里需要和数据源配置中的jndi名对应上。
            
            Connection con  =  ds.getConnection();
             String  sql  =   " select * from SYSTEM.TESTTB0619 " ;
            
            Statement stmt  =  con.createStatement();
            ResultSet rs = stmt.executeQuery(sql);
            
             while  (rs.next()) {
                 String  id  =  rs.getString( " id " );
                 String  name  =  rs.getString( " name " );
                
                out.println( " <tr> " );
                out.println( " <td> " + id + " </td> " );
                out.println( " <td> " + name + " </td> " );
                out.println( " </tr> " );
            }
            
            
            rs.close();
            stmt.close();
            con.close();
         %>
         </ tbody >
         </ table >
     </ body >
</ html >

首页显示效果如下：