bourbaki4481472 bourbaki4481472 - 1 year ago 62
Java Question

Passing a value from servlet doGet() to javascript's $.get() returning whole HTML instead

My work necessitates working with Java logic and Javascript. So, now I am trying to pass a value to javascript once a doGet() of a servlet is executed. Somehow, instead of some Java string, javascript displays the whole HTML String as the value (


The following is an excerpt from the hello.jsp:

<script src=""></script>
$.get('hello', function(data) {

<div id="input">
<form action="hello" method="get">
<p><input type="text" name="query" value="${messages.query}"><input type="submit" value="Go!"></p>


<div id="data"></div>

Except from

public class HelloServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

String data = "Hello World from doGet()!";

request.getRequestDispatcher("/WEB-INF/pages/hello.jsp").forward(request, response);

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {


So, once doGet() is executed, I want
"Hello World from doGet()"
to be passed back as
to javascript's
, but instead
is displayed in the
div. Any advice?

Answer Source

Look at what your doGet is doing.

String data = "Hello World from doGet()!"; // creates a String
response.setContentType("text/plain"); // sets the content type
response.setCharacterEncoding("UTF-8"); // sets the encoding
response.getWriter().write(data); // writes the value of the String to the response

and finally

request.getRequestDispatcher("/WEB-INF/pages/hello.jsp").forward(request, response);

What does this do? The javadoc states

Forwards a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server. This method allows one servlet to do preliminary processing of a request and another resource to generate the response.

A JSP is a Servlet. So when you forward to that JSP, it is rendered and the generated HTML gets written to the HTTP response. If you don't want that, get rid of it.

Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download