Jboss配置mysql数据库连接池-技术开发专区

Jboss配置mysql数据库连接池

作者：billhepeng 编辑： ITPUB实习编辑 2006-10-23 13:12

【IT168技术文档】
6:Myeclispe 新建Web project 命名为:UseTest
新建JAVA类DatabaseConn.java

package com.db;

import java.sql.*;

import javax.naming.*;
import javax.sql.DataSource;

public class DatabaseConn ...{

        public static synchronized Connection getConnection() ...{
            try ...{
                Context envCtx = new InitialContext();
                DataSource ds = (DataSource) envCtx.lookup("java:/test");
                return ds.getConnection();
            } catch (SQLException e) ...{
                System.out.println("数据源配置发生错误" + e.toString());
                return null;
            } catch (NamingException e2) ...{
                System.out.print("数据源配置" + e2.toString());
                return null;
            }

        }



    public static void close(ResultSet rs, Statement st, Connection conn) ...{
        try ...{
            if (rs != null)
                rs.close();
        } catch (SQLException ex) ...{
        }
        ;

        try ...{
            if (st != null)
                st.close();
        } catch (SQLException ex) ...{
        }
        ;

        try ...{
            if (conn != null)
                conn.close();
        } catch (SQLException ex) ...{
        }
        ;
    }
}

7:新建JSP页面:MyJsp.jsp

<%@ page language="java" import="java.util.*" pageEncoding="GB2312"%>
<%@ page import="java.sql.*"%>
<%@ page import="com.db.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>

    <title>My JSP 'MyJsp.jsp' starting page</title>

    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">

    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>

  <body>
    <%
Connection conn = DatabaseConn.getConnection();
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery("select * from test");
while(rs.next())
...{
out.println(rs.getInt("Test_id"));
out.println(rs.getString("Test_name"));
out.println(rs.getString("Test_password"));

}
DatabaseConn.close(rs,stmt,conn);
%>
  </body>
</html>

    8 :部署Web project
    9:重新启动服务器
    10:访问: http://127.0.0.1:8080/UseTest/MyJsp.jsp

第1页：配置第2页：测试

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