 <p>Try processing the json data form the url using JsonSlulrper as follows:</p> <pre><code>def resp = new JsonSlurper().parseText(url.text) </code></pre> <p>Also in your HTML views/layouts, make sure you apply encoding:</p> <pre><code>&lt;!doctype html&gt; &lt;html&gt; &lt;head&gt; &lt;meta charset="utf-8"&gt; ........ </code></pre>