完善xss过滤表达式，避免出现data:

Author: think-gem

common/src/main/java/com/jeesite/common/codec/EncodeUtils.java

@@ -191,7 +191,7 @@ public static String decodeUrl2(String part) {
 	// 预编译XSS过滤正则表达式
 	private static final List<Pattern> xssPatterns = ListUtils.newArrayList(
 			Pattern.compile("(<\\s*(script|link|style|iframe)([\\s\\S]*?)(>|<\\/\\s*\\1\\s*>))|(</\\s*(script|link|style|iframe)\\s*>)", Pattern.CASE_INSENSITIVE),
-			Pattern.compile("\\s*(href|src)\\s*=\\s*(\"\\s*(javascript|vbscript):[^\"]+\"|'\\s*(javascript|vbscript):[^']+'|(javascript|vbscript):[^\\s]+)\\s*(?=>)", Pattern.CASE_INSENSITIVE),
+			Pattern.compile("\\s*(href|src)\\s*=\\s*(\"\\s*(javascript|vbscript|data):[^\"]+\"|'\\s*(javascript|vbscript|data):[^']+'|(javascript|vbscript|data):[^\\s]+)\\s*(?=>)", Pattern.CASE_INSENSITIVE),
 			Pattern.compile("\\s*/?\\s*on[a-zA-Z]+\\s*=\\s*(['\"]?)(.*?)\\1(?=\\s|>|/>)", Pattern.CASE_INSENSITIVE),
 			Pattern.compile("(eval\\((.*?)\\)|expression\\((.*?)\\))", Pattern.CASE_INSENSITIVE),
 			Pattern.compile("^(javascript:|vbscript:)", Pattern.CASE_INSENSITIVE)

common/src/test/java/com/jeesite/test/codec/EncodeUtilsTest.java

@@ -41,6 +41,7 @@ public static void main(String[] args) {
 		xssFilter(i++, "<!--HTML-->你好 ?abc=def&hello=123&world={\"a\":1}我还在。");
 		xssFilter(i++, "<!--HTML-->你好 ?abc=def&hello=123&world={'a':1}我还在。");
 		xssFilter(i++, "<!--HTML-->\"><svg/ONLOAD=confirm(3) />");
+		xssFilter(i++, "<!--HTML-->XSS<embed src=\"data:text/html;base64,PHNjcmlwdD5hbGVydCg5KTwvc2NyaXB0Pgo=\">");
 		sqlFilter(i++, "你好 select * from xxx where abc=def and 1=1我还在。", "common");
 		sqlFilter(i++, "你好 insert into xxx values(1,2,3,4,5)我还在。", "common");
 		sqlFilter(i++, "你好 delete from xxx我还在。", "common");