Passing html code from servlet to ajax through JSON

Question

I want to put some html code to a JSONObject inside a Java servlet and send to the client using ajax, this is my html code that I want to put into a string variable called "resultado" (escaping html characters):

resultado += "<a href=\"javascript:void(0);\">" + stringValue + "</a>";

This is the way I put the html code into a JsonObject (inside my servlet) through the variable that is called "resultado":

response.setContentType("text/html; charset=windows-1252");
PrintWriter out = response.getWriter();
jsonGeneral.put("error", 0);
jsonGeneral.put("contenido", resultado);
out.print(jsonGeneral.toString());
out.close();

Then, the "error" attribute of $ajax() function shows me the next sentence (browser console):

SyntaxError: illegal character
<a href="\&quot;javascript:void(0);\&quot;">abc123...

This seems the html escaping is not the correct.

jsonGeneral is a JsonObject JSONObject jsonGeneral = new JSONObject();

and this is my code client:

$('#cargaDocumentoForm').ajaxForm({
  dataType: 'json',
  beforeSubmit: ShowRequest,
  success: SubmitSuccesful,
  error: function (xhr, status, error){
  var err = eval("(" + xhr.responseText + ")"); 
    console.log("err: " + err.Message);        
  }

@SLaks Oh I thought you were talking about User-Agent for some reason. My bad. — mattbdean, Feb 05 '14 at 16:12
About the content type in my servlet I tried with "application/json; charset=utf-8", application/x-www-form-urlencoded; charset=UTF-8" but It doesn't work with none of them — jcflorezr, Feb 05 '14 at 16:22
I got it! All I needed was just add the html code to a wrapper tag that I create in response time: var message = $("
").html(responseText.contenido).text(); $('#estado_upload').html(message); Where "message" is a var where I get the response from the servlet (my JSON including the html code specified in my question) wrapped in a `
` tag, it could be any tag (`
`, `
`, however). — jcflorezr, Feb 05 '14 at 20:11

score 0 · Answer 1 · edited May 23 '17 at 12:03

0

When I have needed to pass XML or similar in the past, we used base-64 or URL encoding on the string to avoid any need to worry about character escaping.

From a Java point of view, the following may be of use (there is too much code and too varying a view point to make it worth me picking one, as someone will complain): Decode Base64 data in Java

Ajax I've not looked into but there will be examples around somewhere.

edited May 23 '17 at 12:03

Community

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answered Feb 05 '14 at 16:34

Paul Eden

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Could you share with me some code where I could use base-64 or url encoding? – jcflorezr Feb 05 '14 at 16:37
Edited to include a link – Paul Eden Feb 05 '14 at 16:58
I got it! All I needed was just add the html code to a wrapper tag that I create in response time: var message = $("
").html(responseText.contenido).text(); $('#estado_upload').html(message); Where "message" is a var where I get the response from the servlet (my JSON including the html code specified in my question) wrapped in a `
` tag, it could be any tag (`
`, `
`, however). – jcflorezr Feb 05 '14 at 20:11

Passing html code from servlet to ajax through JSON

1 Answers1