📄 ex5_3.jsp
字号:
<%@ page language="java" contentType="text/html; charset=GB2312"
pageEncoding="GB2312"%>
<%@ page import="java.util.*"%>
<%@ page import="java.sql.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB2312">
<title>查询数据</title>
</head>
<body>
<h2>查询客户信息</h2>
<table width="80%" height="156" border="0" cellpadding=" cellspacing="0">
<tr>
<td width="10%">客户ID</td>
<td width="20%">客户名</td>
<td width="15%">客户电话</td>
<td width="25%">客户Email</td>
<td width="30%">加入时间</td>
</tr>
<font size=2>
<%//连接需要的对象
Connection conn = null;
Statement stmt = null;
String sql = null;
ResultSet rs = null;
int ret;
try {
Class.forName("com.mysql.jdbc.Driver"); //载入JDBC驱动程序
String strCon = "jdbc:mysql://localhost:3306/JspSamples"; //连接字
conn = DriverManager.getConnection(strCon, "root", "root"); //连接数据库
stmt = conn.createStatement(); //初始化查询
sql = "select * from customers "; //查询数据
rs = stmt.executeQuery(sql); //执行查询数据，返回结果集
while (rs.next()) { //遍历结果集
int id = rs.getInt("Id"); //获取指定列的值
String name = rs.getString("Name");
String tel = rs.getString("Tel");
String email = rs.getString("Email");
Timestamp addtime = rs.getTimestamp("addTime", Calendar
.getInstance());
out.println("<tr>"); //显示结果
out.println("<td>" + id + "</td>");
out.println("<td>" + name + "</td>");
out.println("<td>" + tel + "</td>");
out.println("<td>" + email + "</td>");
out.println("<td>" + addtime + "</td>");
out.println("</tr>");
}
rs.close(); //关闭结果集
stmt.close(); //关闭查询
conn.close(); //关闭连接
} catch (ClassNotFoundException e) { //意外处理，驱动程序无法找到
e.printStackTrace();
out.println("<h1>无法找到数据库驱动</h1>");
} catch (SQLException e1) { //意外处理，数据库操作失败
e1.printStackTrace();
out.println("<h1>数据库操作失败</h1>");
}
%>
</table>
</font>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -