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通过mysql来查询表单数据并显示

2014-12-02 09:44 330 查看

/* * 通过mysql来查询表单数据并显示 */package servlet;
import java.io.*;import javax.servlet.*;import javax.servlet.http.*;import java.sql.*;
public class viewTeams extends HttpServlet{ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Connection cn = null; PreparedStatement pst = null; ResultSet rs = null; try { Class.forName("com.mysql.jdbc.Driver");//加载MySQL驱动程序
//建立与数据库的连接 String url = "jdbc:mysql://localhost:3306/training"; String user = "root"; String password = "jakeyouxiang"; cn = DriverManager.getConnection(url,user,password);
pst = cn.prepareStatement("select * from team"); //创建PreparedStatement对象 rs = pst.executeQuery(); //执行查询 // 通过response向客户端应答 response.setContentType("text/html;charset=GBK"); PrintWriter out = response.getWriter(); out.println("<html>"); out.println("<head>"); out.println("<title>显示小组</title>"); out.println("</head>"); out.println("<body>"); out.println("<h1 align=center>显示</h1>"); out.println("<table border='1' align='center'>"); out.println("<tr><th>编号</th><th>组名</th><th>口号</th><th>组长</th></tr>");
//把结果集里的数据在表格里显示出来 while(rs.next()) { out.println("<tr>"); out.println("<td>" + rs.getString("id") + "</td>"); out.println("<td>" + rs.getString("name") + "</td>"); out.println("<td>" + rs.getString("slogan") + "</td>"); out.println("<td>" + rs.getString("leader") + "</td>"); out.println("</tr>"); } out.println("</table>"); out.println("<p><a href='../addTeam.html'>增加小组</a>"); out.println("<a href='../index.html'>返回首页</a>"); out.println("</body>"); out.println("</html>"); } catch (Exception e) { e.printStackTrace(); // 通过response向客户端应答，显示增加失败 response.setContentType("text/html;charset=GBK"); PrintWriter out = response.getWriter(); out.println("<html>"); out.println("<head>"); out.println("<title>显示小组失败</title>"); out.println("</head>"); out.println("<body>"); out.println("<h1 align=center>显示小组失败</h1>"); out.println("<p><a href='../addTeam.html'>增加小组</a>"); out.println("<a href='viewTeams'>显示小组</a>"); out.println("<a href='../index.html'>返回首页</a>"); out.println("</body>"); out.println("</html>"); } finally { try { rs.close(); pst.close(); cn.close(); } catch(Exception e) { e.printStackTrace(); } } }
}

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