LDEV-4898 stricter soap detection

https://luceeserver.atlassian.net/browse/LDEV-4898

core/src/main/java/lucee/runtime/ComponentPageImpl.java

@@ -40,6 +40,7 @@
 import lucee.commons.lang.HTMLEntities;
 import lucee.commons.lang.StringUtil;
 import lucee.commons.lang.mimetype.MimeType;
+import lucee.commons.net.HTTPUtil;
 import lucee.runtime.component.StaticStruct;
 import lucee.runtime.config.ConfigWebPro;
 import lucee.runtime.converter.BinaryConverter;
@@ -87,6 +88,8 @@
 import lucee.runtime.type.util.UDFUtil;
 import lucee.runtime.util.PageContextUtil;
 
+
+
 /**
  * A Page that can produce Components
  */
@@ -691,6 +694,11 @@ private static void writeOut(PageContext pc, Object obj, MimeType mt, BinaryConv
 
 	public static boolean isSoap(PageContext pc) {
 		HttpServletRequest req = pc.getHttpServletRequest();
+
+		String strContentType = ReqRspUtil.getContentTypeAsString(pc, null);
+		Boolean isText = HTTPUtil.isTextMimeType(strContentType);
+		if (isText == null || !isText) return false;
+
 		InputStream is = null;
 		try {
 			is = req.getInputStream();