tomcat-Invalid Chunk

Tomcat 5.x以後(5.5.26/27) 可能出現類似："Invalid chunk" 警告訊息

Between Tomcat 5.5.17 and 5.5.27, a change was made to log warning messages for URL queries that contain a null "parameter=value" string. When you run some apps in Tomcat 5.5.27, Tomcat logs this warning message because http://<webapps_url>?&<query_string> has no query parameter between "?" and "&," but the issue is ignored.

There is no problem with your processing, either before or after this warning message.

However, since Tomcat logs this message you may find that your log files consume excessive amounts of disk space in the catalina.out file (on Unix/Linux) or in the JVM stdout log file (on Windows). If you run your apps interactively on Windows with the app's debug option,

Each message looks like this:
 org.apache.tomcat.util.http.Parameters processParameters
 WARNING: Parameters: Invalid chunk ignored.

Note that this message can be caused by URLs constructed by WorldServer or by any customizations that you have installed. It can also be caused by URLs defined as Useful Links, or stored externally in bookmarks, documents,spreadsheets, mail messages, etc.

To stop logging these warnings, add this line to the JVM logging.properties file:
    org.apache.tomcat.util.http.Parameters.level = SEVERE

On Windows, the file is &systemdir&\jre\jre\lib\logging.properties.
  If you use another JDK, find this file in $JAVA_HOME/jre/lib. For example,
  C:\Program Files\Java\jdk1.5.0_11\jre\lib\logging.properties.
On Unix/Linux, if JAVA_HOME=/usr/jdk/instances/jdk1.5.0, the file is
  /usr/jdk/instances/jdk1.5.0/jre/lib/logging.properties.

For information about Tomcat logging, see http://tomcat.apache.org/tomcat-5.5-doc/logging.html. The warning is in tomcat-5.5.27-src\connectors\util\java\org\apache\tomcat\util\http\Parameters.java.