I have started to maintain a legacy JSF application. It uses myFaces 1.1.x and tomahawk 1.1.6. I need to print META
tag X-UA-Compatible
as the first element of HEAD
element otherwise IE will ignore it.
<%@page contentType="text/html;charset=UTF-8" pageEncoding="UTF-8" %>
<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="t" uri="http://myfaces.apache.org/tomahawk"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<f:view>
<t:documentHead>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta http-equiv="Content-type" content="text/html; charset=UTF-8">
It will generate
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script type="text/javascript" src="/Viewer/faces/myFacesExtensionResource/org.apache.myfaces.renderkit.html.util.MyFacesResourceLoader/15311471/navmenu.jscookmenu.HtmlJSCookMenuRenderer/JSCookMenu.js"><!--
//--></script>
<script type="text/javascript" src="/Viewer/faces/myFacesExtensionResource/org.apache.myfaces.renderkit.html.util.MyFacesResourceLoader/15311471/navmenu.jscookmenu.HtmlJSCookMenuRenderer/MyFacesHack.js"><!--
//--></script>
<script type="text/javascript"><!--
var myThemeMiniBlackBase='/Viewer/faces/myFacesExtensionResource/org.apache.myfaces.renderkit.html.util.MyFacesResourceLoader/15311471/navmenu.jscookmenu.HtmlJSCookMenuRenderer/ThemeMiniBlack/';
//--></script>
<script type="text/javascript" src="/Viewer/faces/myFacesExtensionResource/org.apache.myfaces.renderkit.html.util.MyFacesResourceLoader/15311471/navmenu.jscookmenu.HtmlJSCookMenuRenderer/ThemeMiniBlack/theme.js"><!--
//--></script>
<link rel="stylesheet" href="/Viewer/faces/myFacesExtensionResource/org.apache.myfaces.renderkit.html.util.MyFacesResourceLoader/15311471/navmenu.jscookmenu.HtmlJSCookMenuRenderer/ThemeMiniBlack/theme.css" type="text/css" />
<script type="text/javascript" src="/Viewer/faces/myFacesExtensionResource/org.apache.myfaces.renderkit.html.util.MyFacesResourceLoader/15311471/popup.HtmlPopupRenderer/JSPopup.js"><!--
//--></script>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta http-equiv="Content-type" content="text/html; charset=UTF-8">
How can I force the META tag to be the first element? I tried plain HTML HEAD element but it did not work either.
I need
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta http-equiv="Content-type" content="text/html; charset=UTF-8">
Update:
Some of these javascripts and styles are rendered because of this tag:
<t:jscookMenu theme="ThemeMiniBlack" layout="hbr" immediate="true">
The remaining javascript comes from
<t:popup closePopupOnExitingElement="true" closePopupOnExitingPopup="true"
displayAtDistanceX="10" displayAtDistanceY="20" styleClass="popup">
The question is if I can enforce that what I put to t:documentHead has a precedence? I worry I will need to write my custom tag.
I would give a try to adding the meta tag yourself in a custom java filter.
<filter>
<filter-name>MetaTagsFilter</filter-name>
<filter-class>com.yournamespace.MetaTagsFilter</filter-class>
</filter>
Then do a filter mapping for the JSF servlet:
<filter-mapping>
<filter-name>MetaTagsFilter</filter-name>
<servlet-name>FacesServlet</servlet-name>
</filter-mapping>
<servlet-mapping>
<servlet-name>FacesServlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
In your filter logic, add the meta tag, after the servlet has performed the processing, kind of this:
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain filterChain) throws IOException, ServletException {
HtmlResponseWrapper capturingResponseWrapper = new HtmlResponseWrapper(
(HttpServletResponse) response);
filterChain.doFilter(request, capturingResponseWrapper);
if (response.getContentType() != null
&& response.getContentType().contains("text/html")) {
// Try this https://stackoverflow.com/a/32830377/1199132
capturingResponseWrapper.addHeader("X-UA-Compatible", "IE=edge");
// Or this, that way you have more control over WHERE it gets written
String content = capturingResponseWrapper.getCaptureAsString();
// replace stuff here (find the <head></head> tags and add the <meta> at the very beginning)
System.out.println(replacedContent);
response.getWriter().write(replacedContent);
}
}
See also: