带有“ Cookie”的HttpURLConnection addRequestProperty导致逗号分隔的Cookie字符串？ [英] HttpURLConnection addRequestProperty with "Cookie" resulting in comma separated Cookie string?

问题描述

我必须从Java代码模拟浏览器的行为。

在将请求发布到服务器之前，我必须在请求上设置两个cookie。

我这样做：

  HttpURLConnection conn = ... 
 ... 
 conn.addRequestProperty（ Cookie， IDS_SSO_ID = + onething）; 
 conn.addRequestProperty（ Cookie， JSESSIONID = + otherthing）））; 
 ... 
 conn.close（）; 
  

在服务器日志上，我看到 IDS_SSO_ID cookie被检索为 onething，JSESSIONID，这会导致错误。

请注意，我无权访问服务器或服务器的源代码，我只有日志。

如何使用HttpURLConnection设置cookie？

---

因此，我创建了一个小示例；如果我使用 addRequestProperty，则会发送不正确的Cookie标头：

  URL url = new URL（ https：// en0hphl04qcwvf .x.pipedream.net /）; 
 HttpURLConnection conn =（HttpURLConnection）url.openConnection（）; 
 
 conn.addRequestProperty（ Cookie， JSESSIONID = akarmi123）; 
 conn.addRequestProperty（ Cookie， IDS_SSO_ID = netudd321）; 
 
 byte [] bytes = StreamUtils.copyToByteArray（conn.getInputStream（））; 
 System.out.println（ response： +新的String（bytes））; 
 conn.disconnect（）; 
  

cookie标头值为： JSESSIONID = akarmi123，IDS_SSO_ID = netudd321

如果我使用'setRequestProperty'并手动构造cookie头，则会发送正确的cookie头：

  conn =（HttpURLConnection）url.openConnection（）; 
 
 conn.setRequestProperty（ Cookie， JSESSIONID = akarmi123; IDS_SSO_ID = netudd321）; 
 
字节= StreamUtils.copyToByteArray（conn.getInputStream（））; 
 System.out.println（ response： +新的String（bytes））; 
 conn.disconnect（）; 
  

cookie标头值为： JSESSIONID = akarmi123; IDS_SSO_ID = netudd321

奇怪的是，网络中的大量资源（以及SO中的资源）推荐了我的第一种方法-多次调用在addRequestProperty（...）上：

如何使用Java在Http Get方法中设置Cookie

https://www.codota.com/code/java/methods/java.net.URLConnection/addRequestProperty

https://www.programcreek.com/java-api-examples/?class=java.net.HttpURLConnection&method=addRequestProperty

http：// w ww.massapi.com/method/ad/addRequestProperty-2.html

但似乎他们错了...

解决方案

一种可能性是通过执行以下操作来强制cookie字符串的正确连接：

< pre class = lang-java prettyprint-override> conn.addRequestProperty（ Cookie， JSESSIONID = + otherthing +; IDS_SSO_ID = + onething）;


您所描述的行为在我看来是意外行为。

I have to emulate browser behaviour from Java code.

I have to set two cookies on a request before posting it to the server.

I do this:

HttpURLConnection conn = ...
...
conn.addRequestProperty("Cookie", "IDS_SSO_ID=" + "onething");
conn.addRequestProperty("Cookie", "JSESSIONID=" + "otherthing"));
...
conn.close();

On the server logs I see that the 'IDS_SSO_ID' cookie is retrieved as "onething, JSESSIONID", which causes an error.

Note that I have no access to the server nor the server's source code, I only have the logs.

How should I set cookies using HttpURLConnection?

---

So, I've created a small demonstration; If I use 'addRequestProperty' then an incorrect cookie header is sent:

URL url = new URL("https://en0hphl04qcwvf.x.pipedream.net/");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();

conn.addRequestProperty("Cookie", "JSESSIONID=akarmi123");
conn.addRequestProperty("Cookie", "IDS_SSO_ID=netudd321");

byte[] bytes = StreamUtils.copyToByteArray(conn.getInputStream());
System.out.println("response: " + new String(bytes));
conn.disconnect();

cookie header value is: JSESSIONID=akarmi123, IDS_SSO_ID=netudd321

If I use 'setRequestProperty' and manually construct the cookie header, then a correct cookie header is sent:

conn = (HttpURLConnection) url.openConnection();

conn.setRequestProperty("Cookie", "JSESSIONID=akarmi123; IDS_SSO_ID=netudd321");

bytes = StreamUtils.copyToByteArray(conn.getInputStream());
System.out.println("response: " + new String(bytes));
conn.disconnect();

cookie header value is: JSESSIONID=akarmi123; IDS_SSO_ID=netudd321

The strange thing is, that a lot of resources in the web (and here in SO too) recommends my first approach -- multiple calls on addRequestProperty(...):

How to set Cookies at Http Get method using Java

https://www.codota.com/code/java/methods/java.net.URLConnection/addRequestProperty

https://www.programcreek.com/java-api-examples/?class=java.net.HttpURLConnection&method=addRequestProperty

http://www.massapi.com/method/ad/addRequestProperty-2.html

But it seems that they are wrong...

解决方案

A possibility would be to enforce the right concatenation of the cookie strings by doing the following:

conn.addRequestProperty("Cookie", "JSESSIONID=" + "otherthing" + ";IDS_SSO_ID=" + "onething");

The behavior described by you looks to me as an unintended behavior.

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