java - OkHttp CookieJar 向请求添加 cookie 失败

Question

我正在尝试使用 CookieJar 将已保存的身份验证 cookie 添加到进一步的请求中。虽然获取正确的身份验证 cookie 并将其保存到 jar 中效果很好，但在检查 response.request().headers() 时，找不到 cookie。

我发现这特别奇怪，因为我通过调试发现为请求调用了 loadForRequest() 并返回了正确的 cookie。当在 Postman 中使用完全相同的 cookie 来伪造请求时，它会返回所需的结果(没有登录表单的页面)。

有人可以解释一下我遗漏了什么吗？

使用jar的类

class HTMLRoutes {
    var scheme = "https"
    var host = "www.mangaupdates.com"
    val cookieJar = MULoginCookieJar()
    var client = OkHttpClient.Builder()
            .cookieJar(cookieJar)
            .build()
/*Other code*/

private fun getHTMLFromUrl(url: HttpUrl): String {
        var request = Request.Builder()
                .url(url)
                .build()
        client.newCall(request).execute().use { response ->
        //Right before returning response the loadForRequest() method gets called in the MUCookieJar class
            if (response.isSuccessful) {
            //response.request.headers = ""
                if (response.body() != null) {
                    return response.body()!!.string()
                } else {
                    throw IOException("Response body is empty")
                }
            } else {
                throw IOException("Unexpected code" + response)
            }
        }
    }
}

我的 cookies jar

class MULoginCookieJar : CookieJar {
    private var secureSessionCookie: Cookie? = null

    override fun saveFromResponse(url: HttpUrl?, cookies: MutableList<Cookie>?) {
        if (url != null && cookies != null) {
            if (url.pathSegments().size > 0 && url.pathSegments()[0] == "login.html") {
                for (cookie in cookies) {
                    if(cookie.name() == "secure_session") {
                        secureSessionCookie = cookie
                    }
                }
            }
        }
    }

    override fun loadForRequest(url: HttpUrl?): List<Cookie>? { // url = https://www.mangaupdates.com/series.html?id=14829
        if(url != null && url.pathSegments().size > 0 && url.pathSegments()[0] == "login.html") {
            return emptyList()
        }

        val cookies: List<Cookie> = if(secureSessionCookie==null) emptyList() else listOf(secureSessionCookie!!)
        return cookies // = ["secure_session=601bbc74; expires=Sun, 07 Oct 2018 20:45:24 GMT; domain=www.mangaupdates.com; path=/; secure; httponly"]
    }
}

非常感谢您的帮助。我潜伏了很长时间，但这是我第一次被问题难住。

Answer 1

我建议使用现有的 cookie jar 而不是创建自己的 cookie jar。有关 cookie 的规则可能会变得有点复杂。

import okhttp3.JavaNetCookieJar;

CookieManager cookieManager = new CookieManager();
cookieManager.setCookiePolicy(CookiePolicy.ACCEPT_ALL);
JavaNetCookieJar cookieJar = new JavaNetCookieJar(cookieManager);

OkHttpClient client = new OkHttpClient.Builder().cookieJar(cookieJar).build();

还可以设置 OkHttp debug logging with an interceptor 来帮助调试.

Logger logger = LoggerFactory.getLogger(HttpUtil.class);
HttpLoggingInterceptor logging =
    new HttpLoggingInterceptor((msg) -> {
        logger.debug(msg);
    });
logging.setLevel(Level.BODY);

client.addNetworkInterceptor(logging);