Java HttpServletResponse addCookie 在 chrome 上无法使用，即

Question

我使用 addCookie 方法设置 scdid 就像 jsessionid。但不幸的是，它在 Chrome 和 IE 上没有用，在 Firefox 上没问题。

那么，有人可以帮我吗？

Cookie cookie = new Cookie("xx", "xxx");
cookie.setMaxAge(3600);
cookie.setDomain("xxxx"); 
cookie.setPath("/");
response.addCookie(cookie);

这是request/response正文：

Headers
Remote Address:127.0.0.1:80
Request URL:http(can't give it to a link)://localhost/login
Request Method:POST
Status Code:302 Found

Request body
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Encoding:gzip, deflate
Accept-Language:zh-CN,zh;q=0.8,en-US;q=0.6,en;q=0.4
Cache-Control:max-age=0
Connection:keep-alive
Content-Length:28
Content-Type:application/x-www-form-urlencoded
Cookie:JSESSIONID=3a210ab5-2e48-4a0b-b669-f9b5e82b9988
Host:localhost
Origin:http://localhost
Referer:http://localhost/login
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.111 Safari/537.36

Response body
Content-Length:0
Date:Tue, 09 Jun 2015 01:06:52 GMT
Location:http://localhost/
Server:Apache-Coyote/1.1
Set-Cookie:examid=366d69ae-5249-4e68-b779-c03056188249; Domain=localhost; Expires=Tue, 09-Jun-2015 02:06:51 GMT; Path=/

以上回复于 2015 年 6 月 9 日星期二收到08:06:51

2015-06-10 编辑： 我已经通过以下方式解决了这个问题，但我仍然很困惑。

Cookie cookie = new Cookie("examid", UUID.randomUUID().toString());
response.addCookie(cookie);

在这个解决方案中，我没有设置expires、domain和path，它们的灵感来自于Chrome中的jsessionid。

Remote Address:127.0.0.1:80
Request URL:http://localhost/login
Request Method:POST
Status Code:302 Found

Request Headers
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Encoding:gzip, deflate
Accept-Language:zh-CN,zh;q=0.8,en-US;q=0.6,en;q=0.4
Cache-Control:max-age=0
Connection:keep-alive
Content-Length:28
Content-Type:application/x-www-form-urlencoded
Cookie:JSESSIONID=f63df7a3-f381-4914-92c1-a349bf73316b; examid=
Host:localhost
Origin:http://localhost
Referer:http://localhost/login
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.111 Safari/537.36

Form Dataview source
username:admin
password:xxxx

Response Headers
Content-Length:0
Date:Wed, 10 Jun 2015 01:35:53 GMT
Location:http://localhost/
Server:Apache-Coyote/1.1
Set-Cookie:examid=d65f7974-17f1-4338-9284-48f00670a012

2015-06-12 编辑： MaxAge、路径、域我都一一设置。我发现它在设置域（来自请求参数）时出错。我的代码是如何获取域：

private static final String getDomainName(HttpServletRequest request) {
    String domainName = null;

    String serverName = request.getRequestURL().toString();
    if (serverName == null || serverName.equals("")) {
        domainName = "";
    } else {
        serverName = serverName.toLowerCase();
        serverName = serverName.substring(7);
        final int end = serverName.indexOf("/");
        serverName = serverName.substring(0, end);
        final String[] domains = serverName.split("\.");
        int len = domains.length;
        if (len > 3) {
            // www.xxx.com.cn
            domainName = "." + domains[len - 3] + "." + domains[len - 2] + "." + domains[len - 1];
        } else if (len <= 3 && len > 1) {
            // xxx.com or xxx.cn
            domainName = "." + domains[len - 2] + "." + domains[len - 1];
        } else {
            domainName = serverName;
        }
    }

    if (domainName != null && domainName.indexOf(":") > 0) {
        String[] ary = domainName.split("\:");
        domainName = ary[0];
    }
    return domainName;
}

Answer 1

可能您的 Chrome 和 IE 禁用了 cookie？

Answer 2

更新问题的答案：

Actually, I get domain "localhost" by my code

这就是问题所在：如果您的域名= localhost，则不会设置cookie。由 spec，cookie 域名必须至少有 2 或 3 个点 (.)。 localhost是顶级域名，这样不行。不遵守此规则可能会导致某些浏览器出现问题：

Only hosts within the specified domain can set a cookie for a domain and domains must have at least two (2) or three (3) periods in them to prevent domains of the form: ".com", ".edu", and "va.us".

因此，作为解决方案，在本地主机上工作时，我建议您不要设置域名，或者只使用 127.0.0.1.

您可以参考this answer and this answer了解更多信息。

Answer 3

HttpServletResponse -> flushBuffer() 对我来说非常好。

response.flushBuffer();

Java HttpServletResponse addCookie 在 chrome 上无法使用，即

Java HttpServletResponse addCookie could not be useful on chrome and ie

java

cookies