XSS 조치 방법(Remove the script)

public static String getRemoveScript(String strContent) {
		Pattern patternTag = Pattern.compile("\\<(\\/?)(\\w+)*([^<>]*)>");
		Pattern patternScript = Pattern.compile("(?i)\\<script(.*?)</script>");
		Pattern patternMouseOver = Pattern
				.compile("(?i) onmouseover=[\"']?([^>\"']+)[\"']*");
		Pattern patternMouseOut = Pattern
				.compile("(?i) onmouseout=[\"']?([^>\"']+)[\"']*");
		Pattern patternMouseClick = Pattern
				.compile("(?i) onclick=[\"']?([^>\"']+)[\"']*");
		Pattern patternImgtag = Pattern
				.compile("<img.+?src(.+?)&#[0-9]{2,7};(.+?)>");

		Matcher matcherTag = patternTag.matcher(strContent);
		strContent = matcherTag.replaceAll("");

		Matcher matcherContent = patternScript.matcher(strContent);
		strContent = matcherContent.replaceAll("");

		Matcher matcherMouseOver = patternMouseOver.matcher(strContent);
		strContent = matcherMouseOver.replaceAll("");

		Matcher matcherMouseOut = patternMouseOut.matcher(strContent);
		strContent = matcherMouseOut.replaceAll("");

		Matcher matcherMouseClick = patternMouseClick.matcher(strContent);
		strContent = matcherMouseClick.replaceAll("");
		
		Matcher matcherImgtag = patternImgtag.matcher(strContent);
		strContent = matcherImgtag.replaceAll("");

		return strContent;
	}