Webfilter + vraptor 3

[Biel Dantonio]

Prezados,

estou tentando implementar um webfilter:

@WebFilter(
  filterName = "CompressResponseFilter",
  urlPatterns = { "/*" }
)

e quando ele chega nessa linha:

String servletResponse = new String(responseWrapper.toString());
    resp.getWriter().write(compressor.compress(servletResponse));

estoura a seguinte exception:

java.lang.IllegalStateException: getOutputStream() has already been called for this response
    at org.apache.catalina.connector.Response.getWriter(Response.java:648)
    at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:213)
    at br.com.components.CompressResponseFilter.doFilter(CompressResponseFilter.java:34)

at br.com.caelum.vraptor.VRaptor.doFilter(VRaptor.java:79)

No VRaptor é essa linha:
staticHandler.deferProcessingToContainer(chain, baseRequest, baseResponse);

Alguma idéia de porque isso acontece? Ou não posso colocar um webfilter junto com o VRaptor?

Abs,

Marcão

[Lucas Cavalcanti]

Olá,

já tentou usar esse filter numa aplicação sem o VRaptor? Ou melhor, na mesma, mas sem o filtro do VRaptor...

a linha do VRaptor aparece pq ele é um filtro, logo participa da request.

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