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Thread: Fetching the document mode of IE in java

  1. #1
    Junior Member
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    Nov 2013
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    Exclamation Fetching the document mode of IE in java

    HI all ,
    I am trying to fetch the browser version as well as document mode of the browser i.e IE from the given function.I knew that in javascript we can use document.documentMode to fetch the doucment mode of IE.but is there any way to do it in java ? I have the userAgent string fro the HttpServletRequest ,but i cannot use it to fetch the document mode.I have used ScriptEngine to execute the javascript inside the java code ,but It is giving exception that the document element is not defined.Kindly help please

    private float getIEVersion(String useragent) 
    	  ScriptEngine engine = 
                    new ScriptEngineManager().getEngineByName("javascript");
    		String docversio = null;
    		String script = "function documentversion() { return document.documentMode }";
    		try {
    		     Invocable inv = (Invocable)engine;
    			try {
    				docversio = (String) inv.invokeFunction("documentversion");
    			} catch (NoSuchMethodException e) {
    				System.out.println("No such method");
    			if(null != docversio)
    			System.out.println("the document version is "+docversio);
    		} catch (ScriptException e) {
    			// TODO Auto-generated catch block
    		float ieVersion = -1;
    		if (useragent != null && useragent.length() > 0) 
    			useragent = useragent.toLowerCase();
    			if (useragent.contains("msie")) 
    				Pattern iePattern = Pattern.compile("msie ([0-9]{1,}[\\.0-9]{0,})");
    				Matcher m = iePattern.matcher(useragent);
    				if (m.find()) 
    					ieVersion = Float.parseFloat(m.group(1));
    		//System.out.println("The ie version is "+ ieVersion);
    		return ieVersion;

  2. #2
    Forum VIP
    Join Date
    Jun 2011
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    Default Re: Fetching the document mode of IE in java

    'document' is undefined because this is executing on the server side. To get the clients browser you will need to pass document.documentMode to the servlet as a parameter. You can scrap the ScriptEngineManager.

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