zoukankan      html  css  js  c++  java
  • 编写一个简易的留言薄,实现添加留言和显示留言内容的功能

    <%@ 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>Insert title here</title>
    </head>
    <body>
    <form action="lyxianshi.jsp" method="post">
    &nbsp;&nbsp;ID:&nbsp;&nbsp;<input type="text" name="name">
    <br>
    回复:<textarea name="testarea" ></textarea>
    <br>
    <input type="submit" value="提交">
    </form>
    </body>
    </html>
    <%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <%@ page import="java.sql.*"%>
    
    <!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>Insert title here</title>
    </head>
    <body>
    <% 
              String name=new String(request.getParameter("name").getBytes("ISO-8859-1"),"UTF-8"); 
              String testarea=new String(request.getParameter("testarea").getBytes("ISO-8859-1"),"UTF-8");
              Connection conn = null;
              try
              {
                  Class.forName("oracle.jdbc.driver.OracleDriver");
                  String strUrl = "jdbc:oracle:thin:@localhost:1521:orcl"    ;
                  conn  = DriverManager.getConnection(strUrl, "test", "5211314");
                  System.out.println("连接数据库成功!");
                  
                  Statement st = conn.createStatement(); 
                  st.executeUpdate("insert into liuyan values( ly.nextval,'"+name+"','"+testarea+"')");
                  
                  ResultSet rs= st.executeQuery("select * from liuyan order by ly");
                  while(rs.next())
                {
                   
                   String id= rs.getString(2);
                   String liuyan= rs.getString(3);
                 %>             
                   <table width="100%" border="1">
                   <tr height="20" ><td>id:<%=id %></td></tr>
                   <tr height="40" ><td>留言:<%=liuyan %></td></tr>
                   </table>
                   <%--out.print("<br>id:"+ id + "  留言:"+liuyan );--%>
                  <%
                }
                  rs.close();
                  st.close();
                  conn.close();
                  
              } 
              catch (Exception e)
              {
                  // TODO 自动生成的 catch 块
                  e.printStackTrace();
              }
    
    %> 
    
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/ljxe/p/5619163.html
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