Jsp连接Mysql数据库(带连接池)

huanat — Fri, 14 Jul 2006 03:26:00 GMT

Property	Value
JNDI Name:	jdbc/mysql
Data Source URL:	jdbc:mysql://localhost/test
JDBC Driver Class:
User Name:
Password:
Max. Active Connections:
Max. Idle Connections:
Max. Wait for Connection:
Validation Query:

在conf/server.xml中设置如下：

                    docBase="D:/myjsp"
            path="/myjsp">
                      global="jdbc/mysql"
            name="jdbc/mysql"
            type="javax.sql.DataSourcer"/>

:::::::::接着可以使用了::::::::

<%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
<%@ page session="false"%>
<%@ page import="java.sql.*"%>
<%@ page import="javax.sql.*"%>
<%@ page import="javax.naming.*"%>
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
http://www.w3.org/1999/xhtml">

无标题文档

<%
/** statment应用实例
Connection conn=null;
Statement sm=null;
ResultSet rs=null;
try
{
   InitialContext ctx=new InitialContext();
   DataSource ds=(DataSource)ctx.lookup("java:comp/env/jdbc/mysql");
   conn=ds.getConnection();
   sm=conn.createStatement();
   rs=sm.executeQuery("select * from go");
   while(rs.next())
   {
      out.println(rs.getString(2)+"....."+rs.getInt("id")+"
");
    }
}catch(Exception e){
   e.printStackTrace();
}finally{
if(sm!=null)
{
  sm.close();
}
if(conn!=null){
  conn.close();
}
}
*/
/**preparestatement应用实例
InitialContext ctx=new InitialContext();
DataSource ds=(DataSource)ctx.lookup("java:comp/env/jdbc/mysql");
Connection conn=ds.getConnection();
PreparedStatement psm=conn.prepareStatement("insert into go(name,sex) values(?,?)");
psm.setString(1,"华哥");
psm.setString(2,"英雄");
psm.executeUpdate();
psm.close();
conn.close();
out.println("更新成功");

InitialContext ctx=new InitialContext();
DataSource ds=(DataSource)ctx.lookup("java:comp/env/jdbc/mysql");
Connection conn=ds.getConnection();
PreparedStatement psm=conn.prepareStatement("update go set name=? where id=?");
psm.setString(1,"天使");
psm.setInt(2,2);
psm.executeUpdate();
out.println("更新成功!");
psm.close();
conn.close();
*/
InitialContext ctx=new InitialContext();
DataSource ds=(DataSource)ctx.lookup("java:comp/env/jdbc/mysql");
Connection conn=ds.getConnection();
Statement sm=conn.createStatement();
ResultSet rs=sm.executeQuery("select * from go");
while(rs.next())
{
out.println(rs.getString(1)+"..."+rs.getString(2)+"..."+"
");
}
sm.close();
rs.close();
conn.close();
%>

huanat 2006-07-14 11:26 发表评论

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Jsp连接Mysql数据库(带连接池)