My Tech Blog

<context-param>     <param-name>webAppRootKey</param-name>     <param-value>{project name and version}</param-value>    </context-param> Add this to Web.xml and this will fix the issue. Replace the value with project name and version number. Happy Coding.

Recently was trying to consume a Rest Web Service by passing AES256 encrypted values in header Params and hit the above exception. java.lang.IllegalArgumentException: Illegal character(s) in message header value: After a little bit of resaerch i found that it is a bug with java while using BASE64 Encoded String.If the string length exceeds 76 characters, the Base64Encoder adds a "\n" character. While trying to sent it in header it fails complaining about the "\n" in the Base64 encoded string. This is actually a bug with JAVA http://bugs.java.com/bugdatabase/view_bug.do?bug_id=6459815 The fix is String encodeMe = m_username + ":" + m_sToken; BASE64Encoder encoder = new BASE64Encoder(); String base64Encoded = encoder.encode(encodeMe.getBytes()); //!Important! - Get rid of any newline characters erroneously // added by the Base64Encoder base64Encoded = base64Encoded.replaceAll(...