HttpClient 不会将所有 cookie 发送到 restful api

Question

我正在使用HttpClient 4.4.1调用一个restful api，但它没有发送cookie，

private CloseableHttpResponse call(String url, javax.servlet.http.HttpServletRequest httpServletRequest) {
HttpGet request = new HttpGet(url);
BasicHttpContext localContext = new BasicHttpContext();
CookieStore cookieStore = new BasicCookieStore();
javax.servlet.http.Cookie[] cookies = httpServletRequest.getCookies();
BasicClientCookie basicClientCookie = null;
if (cookies != null) {
for (int i = 0; i < cookies.length; i++) {
javax.servlet.http.Cookie cookie = cookies[i];
basicClientCookie = new BasicClientCookie(cookie.getName(), cookie.getValue());
basicClientCookie.setDomain(cookie.getDomain());
basicClientCookie.setPath("/");
basicClientCookie.setAttribute(ClientCookie.DOMAIN_ATTR, "true");
basicClientCookie.setVersion(0);
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.DAY_OF_YEAR, 100);
Date date = calendar.getTime();
basicClientCookie.setExpiryDate(date);
cookieStore.addCookie(basicClientCookie);
}
}
if (cookieStore.getCookies() != null) {
System.out.println("Cookies size " + cookieStore.getCookies().size());
}
localContext.setAttribute(HttpClientContext.COOKIE_STORE, cookieStore);
CloseableHttpClient httpClient = HttpClients.createDefault();
CloseableHttpResponse httpResponse = null;
try {
httpResponse = httpClient.execute(request, localContext);
} catch (IOException e) {
System.out.println("msg " + e.getMessage());
}
return httpResponse;
}

我可以看到它只发送已添加的最后一个cookie。我错过了什么？请帮忙。

Answer 1

问题肯定出在 for 循环中的代码中，因为只有最后添加的 cookie 是可见的。

尝试使用调试器调试 for 循环，或者在从请求获取 cookie 数组时在循环之前添加system.out.println语句，而不是在创建基本客户端 cookie 时在循环内调试，然后在将基本客户端 cookie 添加到cookiestore之前和之后

如评论中所建议的，您也没有将cookiestore添加到上下文中。

localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);

上述代码的另一个问题是

basicClientCookie.setDomain(cookie.getDomain());

request的cookie.getDomain()和URL可以不同，根据cookie行为，它们应该是相同的，然后只有cookie才会发送。因此，只有具有相同 URL 的 cookie 才会随请求一起发送