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JAVA技巧(JNDI对数据库操作代码) |
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www.nanhushi.com 佚名 不详 |
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代码如下：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<jsp:directive.page import="javax.sql.DataSource"/>
<jsp:directive.page import="java.sql.Connection"/>
<jsp:directive.page import="java.sql.ResultSet"/>
<jsp:directive.page import="javax.naming.InitialContext"/>
<jsp:directive.page import="java.sql.SQLException"/>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.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>
<%
DataSource ds = null;
Connection conn = null;
ResultSet rs = null;
try{
InitialContext ctx=new InitialContext();
ds=(DataSource)ctx.lookup("java:comp/env/jdbc/e3java");
conn= ds.getConnection();
java.sql.Statement stmt = conn.createStatement();
//考试大提示users必须是数据库已有的表，
//这里的数据库前文提及的Data Source URL配置里包含的数据库。
String strSql = "select * from product";
rs= stmt.executeQuery(strSql);
while(rs.next()){
System.out.println(rs.getString(1));
}
}catch(Exception ex){
ex.printStackTrace();
}finally{
try {
rs.close();
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
%>
<body>
This is my JSP page. <br>
</body>
</html> 来源:考试大网
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| 文章录入：杜斌 责任编辑：杜斌 |
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