我有8×8的表我想顯示圖像或值隨機在JSP

我要顯示的圖像的網格視圖，但我想我每次打開視圖圖像採取隨機值我的意思是不同的IMGS我有8×8的表我想顯示圖像或值隨機在JSP

public class database extends HttpServlet 

{ 

private static final long serialVersionUID = 1L; 

String firstname; 
String lname; 
String Email; 
String ContactNo; 
String Address; 
String town; 
String pincode; 
String pancard ; 
String voterId; 
String f1,f2,f3,f4,s1,s2,s3,s4; 

/** 
* @see HttpServlet#HttpServlet() 
*/ 
public database() { 
    super(); 
    // TODO Auto-generated constructor stub 
} 

/** 
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) 
*/ 
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 
    // TODO Auto-generated method stub 
} 

/** 
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) 
*/ 

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException 
{ 
    Connection con = null; 
    PreparedStatement ps = null; 
    ResultSet rs = null; 
    Statement st = null; 
    PrintWriter pwinsert = response.getWriter(); 
    firstname=request.getParameter("fname"); 
    lname=request.getParameter("lname"); 
    Email=request.getParameter("email"); 
    ContactNo=request.getParameter("contactNo"); 
    Address=request.getParameter("address"); 
    town=request.getParameter("fname1"); 
    pincode=request.getParameter("fname2"); 
    pancard=request.getParameter("fname3"); 
    voterId=request.getParameter("fname4"); 
    f1=request.getParameter("firstimgval1"); 
    f2=request.getParameter("secimgval1"); 
    f3=request.getParameter("thirdimgval1"); 
    f4=request.getParameter("forthimgval1"); 
    s1=request.getParameter("firstimgval2"); 
    s2=request.getParameter("secimgval2"); 
    s3=request.getParameter("thirdimgval2"); 
    s4=request.getParameter("forthimgval2"); 
     try { 
      Class.forName("oracle.jdbc.driver.OracleDriver"); 
      System.out.println("driver loaded"); 
     } 
     catch(ClassNotFoundException ex) { 
      System.out.println("driver not loaded"); 

     } 


     String URL = "jdbc:oracle:thin:@localhost:1521:xe"; 
     String Username = "system"; 
     String Password = "toushif"; 
    try 
    { 


     con = DriverManager.getConnection(URL,Username,Password); 
     ps = con.prepareStatement("INSERT INTO TOU1 (MOBILE,LNAME,FNAME,EMAIL,ADDRESS) VALUES (?,?,?,?,?)"); 
     ps.setString(1,ContactNo); 
     ps.setString(2,lname); 
     ps.setString(3,firstname); 
     ps.setString(4,Email); 
     ps.setString(5,Address); 


     int i = ps.executeUpdate(); 
     pwinsert.println(i); 

     if(i!=0) 
     { 
      pwinsert.println("data has been stored"); 





     } 
     else { 
      pwinsert.println("data could not be stored"); 
     } 
    } 
    catch(Exception e) 
    { 
     e.printStackTrace(); 
    } 

    // TODO Auto-generated method stub 
}

來源

2013-10-12 Toushif Nadaf

按照您的代碼，我可以理解它只能在數據庫中插入但如果是你的代碼顯示 – SpringLearner

雅，但計算器是不允許過去我的代碼 –

所以PLZ告訴如何在jsp中提前致謝 –

步驟

假設你從數據庫中讀取一個list
這集要listhttp-request attribute。
並從httpRequest獲得RequestDispatcher。

然後按照

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> 
<Table> 
<Tr> 
    <td>col1</td> 
    <td>col2</td> 
</tr> 
<c:forEach var="i" items="${listName}"> 
    <tr> 
     <td> 
     <c:out value="${i['col1']}"/> 
     </td>   
     <td> 
     <c:out value="${i['col1']}"/> 
     </td> 
    <tr> 
</c:forEach> 
</table>

來源

2013-10-12 06:17:51

我有8×8的表我想顯示圖像或值隨機在JSP

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