在jsp和servlet之間發送參數

Question

我需要將參數從jsp發送到servlet，但只更新一行而不是所有由servlet生成的行。 你能幫我嗎？ 我的servlet代碼是：

public class ExcelTest extends HttpServlet { 

    @Override 
    protected void doPost(HttpServletRequest request, HttpServletResponse response) 
      throws ServletException, IOException { 
     //processRequest(request, response); 

     response.setContentType("text/html"); 

     PrintWriter out = response.getWriter(); 

     //out.println(request.getParameter("customerName")); 
     for (int i = 0; i < 250; i++){ 
      out.println("<input + id = " + i + " type=\"text\" value = " + request.getParameter("customerName") + ">"); 
      request.setAttribute("vvv", i); 
      out.println("<a href=\"http://localhost:8079/TesteExcel/createparameters.jsp\">Visit</a>"); 
      out.println("<div>");    
      for (int j = 0; j < 10; j++){     
       out.print("<div id = " + i + "" + j + " style=\"width:100px; float:left\">" + i + " - " + j +"</div>"); 
      } 
      out.println("</br>"); 
      out.println("</div>"); 
     } 
    } 
} 

，併爲JSP是：

<form name="excel" action="ExcelTest" method="post"> 
      <input type="text" name="customerName"> 
      <input type="text" name="customerCUI"> 
      <input type=submit value="click me"> 

</form> 

謝謝 可可

Answer 1

試試這個

  String custName = request.getParameter("customerName"); 
      for (int i = 0; i < 250; i++){ 
       if(i!=0) 
        custName=""; 
       out.println("<input + id = " + i + " type=\"text\" value = " + custName + ">"); 
       request.setAttribute("vvv", i); 
       out.println("<a href=\"http://localhost:8079/TesteExcel/createparameters.jsp\">Visit</a>"); 
       out.println("<div>");    
       for (int j = 0; j < 10; j++){     
        out.print("<div id = " + i + "" + j + " style=\"width:100px; float:left\">" + i + " - " + j +"</div>"); 
       } 
       out.println("</br>"); 
       out.println("</div>"); 
      } 

對於第一次迭代只，它將需要customer name。

這裏我假設你需要在每次迭代中使用input標記。