留言板（连接数据库）

简单实现留言功能

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>留言板</title>
</head>
<body>
<form action="session0625.jsp" method="post" id="form1" name="form1">
<div align="center">
<table width="50%" border="0">
<tr >
<td width="10%">您的联系邮箱：</td>
<td width="40%"><input type="text" name="email"/></td>
</tr>
</table>
<table width="50%" border="0" height="40%">
<tr><td>留言内容：</td></tr>
<tr><td><input type="text" style="width: 50%;height: 100%" name="liuyan"/></td></tr>
<tr><td><input type="submit" value="提交"/></td></tr>

</table>

</div>

</form>


</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>session</title>
</head>
<body>
<%
String email=new String(request.getParameter("email").getBytes("ISO-8859-1"),"UTF-8");
session.setAttribute("email",email);
String liuyan=new String(request.getParameter("liuyan").getBytes("ISO-8859-1"),"UTF-8");
session.setAttribute("liuyan",liuyan);
%>
<form action="result0625.jsp" method="post">
<table>
<tr><td>确定添加留言？</td></tr>
<tr>
<td><input type="submit" value="确定"/></td>
<td><input type="reset" value="取消"/></td>
</tr>

</table>


</form>
<%-- 
您的邮箱地址是：
<%=email %>
<br>
您的留言内容是：
<%=liuyan %>
--%>



</body>
</html>

连接数据库

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    <%@ page import="java.sql.*" import="java.util.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>留言板</title>
</head>
<body>



<%
String email=(String)session.getAttribute("email");
String liuyan=(String)session.getAttribute("liuyan");

Connection con=null;

try {
    //连接数据库
    Class.forName("oracle.jdbc.driver.OracleDriver");
    String strUrl="jdbc:oracle:thin:@localhost:1521:ORCL";        
    con=DriverManager.getConnection(strUrl,"test","test");
//添加到数据库
    PreparedStatement ps=con.prepareStatement("insert into text values(?,?)");
  
    ps.setString(1, email);
    ps.setString(2, liuyan);
    
    ps.executeUpdate();
    
    out.print("留言添加成功！"+"<br>");
    
    
    
    
    //显示所有留言
    
    Statement st=con.createStatement();
    //查询数据库，并遍历显示
    ResultSet rs=st.executeQuery("select * from text");
    while(rs.next())
    {
        String youxiang=rs.getString("email");
        String text=rs.getString("neirong");
        out.print("邮箱为"+youxiang+"的留言内容为"+text+"<br>");
        
    }
    
    %>
    
    
    
    
    <%
    ps.close();
    st.close();
    rs.close();
} catch (Exception e) {
    // TODO 自动生成的 catch 块
    e.printStackTrace();
}

finally
{
    if(con!=null)
    {
    try {
        con.close();
    } catch (SQLException e) {
        // TODO 自动生成的 catch 块
        e.printStackTrace();
    }
    }
}


%>








<%-- 
您的邮箱地址是：
<%=email %>
<br>
您的留言内容是：
<%=liuyan %>
--%>
 
</body>
</html>

运行结果：

 

posted @ 2016-06-27 16:55  鱼在我这里  阅读(4003)  评论(0)  编辑  收藏  举报