Get method name in Java Filter

Question

Got a Java Filter which is responsible to intercept some endpoints.

In doFilter method, as follows:

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException;

How do I get the accessed method name?

For instance:

Given 2 Servlets followed by operation name:

LifeCycle
   create
   delete
SearchService
   findByName
   findById

When LifeCycle.create operation is called by a front end perspective, the filter intercepts it, however I couldn't know if the operation called was create or delete?

Are there some way to get the "create" operation name in Java Filter?

Thanks in advance.

http://stackoverflow.com/questions/1069066/get-current-stack-trace-in-java You can get stacktrace and analyze it — Heisenberg, May 22 '15 at 13:17
could you give us some code on how doFilter is called? and from where, and the code from where it is called? — mpop, May 22 '15 at 13:27

score 1 · Answer 1 · answered May 23 '15 at 09:04

Filters are invoked by the web container when a request is made to the server (servlet or jsp). They are not called by Servlets or jsps.

You can see Filter's life-cycle in the image below:

enter image description here

For more see DOCUMENTATION

If you want to know which action is called from the front-end, then you can use a request parameter and then capture it from ServletRequest

score 1 · Accepted Answer · edited May 15 '18 at 01:05

1

I could get the operation name using:

((HttpServletRequest) request).getHeader("SOAPAction");

edited May 15 '18 at 01:05

Pang

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answered May 25 '15 at 17:08

THIAGORC

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score -1 · Answer 3 · answered May 23 '15 at 12:30

If you are searching for method names then you can try this piece of code:

    StackTraceElement[] st = Thread.currentThread().getStackTrace();
    String methodName = st[2].getMethodName();

You can further modify the index of st to get the chained caller methods. It is just a simple array of stack trace objects containing class and method names. Good Luck!

Get method name in Java Filter

3 Answers3