I have developed a web application. It's working fine with the Websphere. I have delpoyed the same application into the tomcat 6.0.14, the deployment was sucessful.
But i try to use some functionalities such as saving data after entering input to the page, it's throwing the following error message and the operation was failed.
Caused by: java.lang.IllegalStateException: No modifications are allowed to a locked ParameterMap
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Requesting you please let me know that what may be the mistake and provided solution.
Thanks for your reply. I am able to run the same application successfully with the Web Sphere 6.1 server.
That just means that WAS 6.1 isn't enforcing the J2EE standard. Just like writing into a WAR, for all intents and purposes, you're exploiting a bug in a particular implementation of a server. Because it's a standards violation, you can't expect to find that same loophole in other servers or even in other versions of the same server.
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Joined: Mar 22, 2000
If i need to create a new map that is a copy of the orginal ParameterMap in Tomcat environment, then how can i do this. Please help me.
Look at the JavaDocs for the API for the java.util.Map interface.
You can use the keySet method to obtain a collection of all of the key values as a Set.
Create a new Map object from one of the classes which implements Map - I typically use HashMap.
Iterate through the keySet - for each key, extract the value from the ParameterMap - the value is a String but just treat it as an object.
Store that value in the new Map using that key.
You now have a Map that contains all the original data but is not locked.