Question

我正在尝试使用Cookie发送帖子请求。这是代码：

try {

    String query = URLEncoder.encode("key", "UTF-8") + "=" + URLEncoder.encode("value", "UTF-8");
    String cookies = "session_cookie=value";
    URL url = new URL("https://myweb");
    HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();

    conn.setRequestProperty("Cookie", cookies);
    conn.setRequestMethod("POST");
    conn.setDoInput(true);
    conn.setDoOutput(true);

    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
    out.writeBytes(query);
    out.flush();
    out.close();

    BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
    String decodedString;
    while ((decodedString = in.readLine()) != null) {
        System.out.println(decodedString);
    }
    in.close();

    // Send the request to the server
    //conn.connect();
} catch (MalformedURLException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

问题是请求是在没有cookie的情况下发送的。如果我只做： conn.connect（）;并且不发送数据，cookie被发送好了。我无法确切地检查发生了什么，因为连接是SSL。我只检查回复。

Answer 1

根据URLConnection javadoc：

The following methods are used to access the header fields and the 
contents AFTER the connection is made to the remote object:

* getContent
* getHeaderField
* getInputStream
* getOutputStream

您是否已确认在您的测试用例中，请求是否已进入服务器？我看到你在connect()之后接到getOutputStream()的电话，并在此之外发表评论。如果您取消注释并在调用getOutputStream()之前向上移动会发生什么？

Java HttpURLConnection - 使用Cookie进行POST

1 个答案: