Cannot forward after response has been committed问题

在一个项目中的servlet里,用户登出后做跳转:

boolean flag=uBiz.lointOut(userBean.getSesionId());
if(flag)
     response.sendRedirect("index.jsp");

结果抛出异常:

Cannot forward after response has been committed。。。。

后来在后面加上return ;就正常了

boolean flag=uBiz.lointOut(userBean.getSesionId());
if(flag)
        response.sendRedirect("index.jsp");
return;
 

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转载自enki-ding-yeah-net.iteye.com/blog/1037505