More than one way to pass an attribute across pages

Hi, I need to pass an attribute (not a parameter) across pages, there seem to be two ways and I tested them, both worked. But I still have doubt.
Approach 1: in a.jsp: session.setAttribute("house",house);
in b.jsp: Object house = session.getAttribute("house");
Approach 2: in a.jsp : RequestDispatcher rd = request.getRequestDispatcher("b.jsp");
request.setAttribute("house",house);
rd.forward(request,response);
in b.jsp : Object house = request.getAttribute("house");
Now my question is: Is it safe to use session to pass an attribute when the value of the attrbute is quite dynamic. I tried to test it, it seemed ok. But I can not convince myself completely.
Anybody can give me some comments on the two approaches? Which is safer, which is better?
Thanks

Both methods can handle dynamic data. The determining question s how long do you need the data for? If you only need the data for the life of the request use the request.setAttribute. If you need to access that data during the life of the session then use session.setAttribute.

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TÃtulo: Quer mudar sua vida??Leia com atenÃ§Ã£o!
          Autor: LUIZ
          Data: 19/11/2005
          Cidade: Boa Vista
          Estado: RR
          PaÃs: Brasil
          COMO ACABAR COM A DIFICULDADE FINANCEIRA
          ACABE COM A DIFICULDADE FINANCEIRA
          GANHE MUITO DINHEIRO COM APENAS 6 REAIS
          HONESTIDADE, INTELIGENCIA E EFICÃCIA
          POR FAVOR, LEIA COM BASTANTE ATENÃ‡ÃƒO, VALE A PENA!
          COMO TRANSFORMAR 6 (SEIS) REAIS EM NO MINIMO 6.000(SEIS MIL REAIS) !! : VOCÃŠ Ã‰ CAPAZ, APENAS FAÃ‡A FUNCIONAR.!
          Eu achei uma mensagem sobre esse assunto e nÃ£o dei muita atenÃ§Ã£o por ser um texto muito longo e parecer ser presente de papai Noel, mÃ¡s resolvi arriscar e deu certo. Vou tentar resumir para que vc tbm nÃ£o ache esse texto cansativo e se quiser mais informÃ§Ãµes mande-me um e-mail â€“ [email protected].
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          ENDEREÃ‡OS DAS PESSOAS QUE VC DEVE ENVIAR R$1,00 JUNTO COM O BILHETE:
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          2)Renato Pontes Eller - Rua Ranulfo Alves,709 Vila Isa.
          Cep: 35044-220 Governador Valadares - MG
          3)Dalton Sampaio - Rua Senador MÃ¡ximo, 75 - Centro.
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          6) Luiz Faustino â€“ Rua Ãgata, 238 â€“ JÃ³ckey Club
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