从doFilter方法设置cookie [英] Setting cookie from doFilter method

问题描述

我有一个过滤器类与doFilter方法。在doFilter方法中，我设置一个cookie如下：

I have a filter class with doFilter method. In the doFilter method, I am setting a cookie as follows

HttpServletResponse httpResp=(HttpServletResponse)servletResponse;
Cookie myCookie=new Cookie("test","");
myCookie.setValue("testValue");
myCookie.setPath("/");
myCookie.setDomain(".mydomain.com");
httpResp.addCookie(myCookie);
filterChain.doFilter(servletRequest,servletResponse); 

这应该是理想的工作吗？在httpResp（HttpServletResponse）对象中设置cookie，然后只转发servletResponse（ServletResponse）对象。

Should this ideally work? Setting a cookie in httpResp(HttpServletResponse) object and then just forwarding servletResponse(ServletResponse) object

奇怪的是，Cookie是为某些客户端设置的， cookie未设置。我已经检查客户端浏览器的cookie设置，它看起来确定。

Strangely the cookie is set for some clients but for some others the cookie is not set. I have checked the cookie settings on client's browser and it looks ok.

推荐答案

public void doFilter(ServletRequest req, ServletResponse res,
        FilterChain chain) throws IOException, ServletException {


    Cookie cookie = new Cookie("LoginCookie","token");

    HttpServletResponse response = (HttpServletResponse) res;
    response.addCookie(cookie);

    chain.doFilter(req, response);
}

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