Databases
StackOverflow2013
Postsdbo
POPassing values from servlet to jsp
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POPassing values from servlet to jsp
    primarykey
    data
    text
    <p>I'm going to implement a searching function for a sms managing system, where the user can enter a name(keyword) and get relevant information. </p> <p>This is the code that i wrote in "InstantSMS.jsp" </p> <hr> <pre><code> $("#search").click(function() { var keyword = $("#customerName").val(); $.ajax({ type : "GET", url : "SearchingClass", data : { key : keyword } }).success(function() { $.getJSON('SearchingClass', function(data) { $("#resultTable").html(data.messageRes); }); }) .error(function(request, error) { $().toastmessage('showWarningToast', "Error! "); }); }); </code></pre> <hr> <p>Here the 'SearchingClass' is the name of the servlet. this is the code of 'SearchingClass.java'</p> <hr> <pre><code>protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String keyword = request.getParameter("key"); SmsMessagesService search = new SmsMessagesService(); ArrayList&lt;Customers&gt; result = new ArrayList&lt;Customers&gt;(); System.out.println("For testing Keyword is ::: "+keyword); result = search.searchCustomer(keyword); String table = "in here i'll generate a code to draw a table using html" Map&lt;String, Object&gt; data = new HashMap&lt;String, Object&gt;(); data.put("messageRes", table); // Write response data as JSON. response.setContentType("application/json"); response.setCharacterEncoding("UTF-8"); response.getWriter().write(new Gson().toJson(data)); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request,response); } </code></pre> <hr> <p>Now the problem is after i press the search button the searching process or the doGet method run 2 times.</p> <p>In 1st run output "For testing Keyword is ::: john " 2nd run "For testing Keyword is ::: "</p> <p>I think that the 2nd run is happening because of "$.getJSON()" method. How to avoid this ? </p> <p>How can i use $.getJSON() method only to get the "String table" but not to run the "doGet()" method ? </p> <p>Is there another way to get a string from servlet to jsp using ajax ?</p> <p>Can i pass this keyword using $.getJSON() method ? </p> <p>Thank you !</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USAnjula
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COThe `.getJSON()` is certainly making another call to the servlet, but in that particular request it's not sending a key. So that totally explains the second run with no keyword in the output. Do you not want it to go back to the servlet at all? If not, what was the original intention of the `.getJSON()` method so that someone can help you figure out what needs axing?
      singulars
      1. POPassing values from servlet to jsp
      1. USGreg Pettit
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload