Sending HTML as JSON with RequestBuilder

[Milan Cvejic]

Hi,
I am trying to send HTML string to server using RequestBuilder with JSON but without any success.

Everything works well when in HTML there are no double quotes or other JSON charachters.

So I am trying something like this

RichTextArea area = new RichTextArea();

String htmlToSend = area.getHTML();

JSONObject requestParams = new JSONObject();
requestParams.put("some_key", new JSONString(htmlToSend));

Unfortunately that string is not encoded properly to be safe to send with json

So if value retuned from area.getHTML() contains double quotes like this:

<p><a href="http://www.denic.de/de/domains/recht/index.html" target="_blank">www.denic.de/de/domains/recht/index.html</a></p>

request param looks like

{"some_key":"<p><a href="http://www.denic.de/de/domains/recht/index.html" target="_blank">www.denic.de/de/domains/recht/index.html</a></p>"}

JSONString method toString() on the other hand is calling JsonUtils.escapeValue(value) so that string should be escaped. And If I call escapeValue from JsonUtils by myself
i get string encoded but end up with two double quotes at the beginning and the end of that string..

Any help is welcome,
Thanks,
Milan

[Thomas Broyer]

On Tuesday, November 27, 2012 9:18:16 AM UTC+1, Jose Javier García Zornoza wrote:

This way I'm sending html with JSON without problems:

public final class HtmlJSONWrapper extends JavaScriptObject {

   public static native HtmlJSONWrapper create(String jsonStr) /*-{

return JSON.parse(jsonStr);

You can use com.google.gwt.core.client.JsonUtils instead of JSNI here.

But I don't understand why it's not working in Milan's case: it *should* work, there are unit-tests checking that it works: https://code.google.com/p/google-web-toolkit/source/browse/tags/2.5.0/user/test/com/google/gwt/json/client/JSONTest.java#187

[Jose Javier García Zornoza]

I think it's not related but with Internet Explorer 8 I'm having a JSON problem with code that runs on other browsers, it says that 'JSON is undefined'

[Milan Cvejic]

Thanks guys for help, I forgot to mention that json gets properly
encoded if using

RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, url);
builder.setHeader("Content-Type", "application/json");

but in my case i need request to be sent as
application/x-www-form-urlencoded or as text/html.

Any idea?
Thanks.

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[Thomas Broyer]

On Tuesday, November 27, 2012 5:30:08 PM UTC+1, Milan Cvejic wrote:

Thanks guys for help, I forgot to mention that json gets properly
encoded if using

RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, url);
        builder.setHeader("Content-Type", "application/json");

but in my case i need request to be sent as
application/x-www-form-urlencoded or as text/html.

Ah, so you need an extra level of escaping: URL.encodeURIComponent for applicationx-www-form-urlencoded, or SafeHtmlUtils for text/html (that one really depends how you're processing the data on the server side).

[Milan Cvejic]

Thanks Thomas,
I will try that one later today.

Best,
Milan

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