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$.ajax not working for GET
<report>
  <id>420</id>
  <checksum>339d9146ddd3d6646a1fe93ddf4d7ab8c4a51c61</checksum>
  <checksumValid>true</checksumValid>
  <reportName>sprawozdanie 1</reportName>
  <userName>John Smith</userName>
  <state>robocze</state>
</report>

$.ajax({
    type:"GET",
    url:"http://127.0.0.1:5050/rest/rest/report/check/" + obj.id + "/" + obj.checksum + ".xml",
    success:function (data, textStatus) {
        alert('success...');
    },
    error:function (xhr, ajaxOptions, thrownError) {
        alert("thrown: '" + thrownError + "', status: '"
        + xhr.status + "', status text: '"
         + xhr.statusText + "'");
    }
});

public class OptionsHeadersFilter implements Filter {

    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
            throws IOException, ServletException {
        HttpServletResponse response = (HttpServletResponse) res;

        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "GET,POST,PUT,DELETE");
        response.setHeader("Access-Control-Max-Age", "360");
        response.setHeader("Access-Control-Allow-Headers", "x-requested-with");

        chain.doFilter(req, res);
    }

    public void init(FilterConfig filterConfig) {
    }

    public void destroy() {
    }
}

<filter>
    <filter-name>OptionsHeadersFilter</filter-name>
    <filter-class>poi.rest.OptionsHeadersFilter</filter-class>
</filter>

<filter-mapping>
    <filter-name>OptionsHeadersFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>