CODEWITHSUNDEEP
jsp
user1316131
user1316131

Reputation: 181

Display messesge wait....as background processing happening

I want to display messsge as "Please Wait........" tilll my java code finishes some processing.

page1.jsp - my form where I have text boxes and submit button. When click on submit button I am doing form submit and calling page2.jsp

In page2.jsp I am requesting parametrs from page1.jsp and passing to my java method which returns me userid. 

userid = myclass.mymethod(); 
if(userid!=null){ 
out.println("Record is in process.Please wait"); 
} 
response.sendredirect("page3.jsp?"+userid=userId);

in page3.jsp i m doing processing on userid which I got in page2.jsp simultaneously. 

someid =request.getparameter(userid); 
process(someid );

But that "Wait " messge is displayed after all processing is finished. I want to display it as soon as I got userId. And continue in background processing on that userId.

Upvotes: 1

Views: 7532

Answers (2)

rickz
rickz

Reputation: 4474

You could use javascript to do many things. Here is one idea.

<html>
<body>
<div id="wait">
Some text here is necessary here for the IE browser to start displaying. 
Otherwise it will wait until it receives enough of a response to begin displaying         anything.
I am not sure how much padding is necessary. This works in IE 8.
<%
  out.print("<little.gif' />");
  out.flush();
  for(int x = 0; x < 3; x++){
                         out.print("<br/>Processing!");
                         out.flush();
                         Thread.sleep(3000);  //mock processing
  }
%>
<br/></div>
<script>
  alert("Finished processing.");
  document.getElementById("wait").innerHTML = "Here are the results...";
</script>
</body>
</html>

Upvotes: 1

rickz
rickz

Reputation: 4474

I tested in IE8 and Chrome 18. If your server has restrictions, then you might have problems. For instance, it won't work on Google App Engine.

<html>
<body>
Some text here is necessary here for the IE browser to start displaying. 
Otherwise it will wait until it receives enough of a response to begin displaying      anything.
I am not sure how much padding is necessary. This works in IE 8.
<%
  out.print("<loading.gif' />");
  out.flush();
  //mock processing
  for(int x = 0; x < 3; x++){
                         out.print("<br/>Processing!");
                         out.flush();
                         Thread.sleep(3000);  
  }
%>
<br/>Finished processing. Here are the results...
</body>
</html>

Upvotes: 0

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