获取接口请求之后的cookie*(爬虫)_请求接口返回2个set-cookie-优快云博客

本文链接：https://blog.youkuaiyun.com/dalter/article/details/86599261

本文介绍了一种使用Java通过HTTPS连接进行登录并从响应中提取Cookies的方法。代码示例展示了如何设置HTTP请求参数，发送POST请求，并解析返回的CookiesHeader。

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public String getCookie() {
       HttpURLConnection connection = null;
       try {
           URL url = new URL("https://**************login");
           connection = (HttpURLConnection) url.openConnection();
           connection.setUseCaches(true);
           connection.setRequestMethod("POST");
           connection.setInstanceFollowRedirects(true);
           connection.setConnectTimeout(3000);
           connection.setDoInput(true);
           connection.setDoOutput(true);
PrintWriter printWriter = new PrintWriter(connection.getOutputStream());
printWriter.write("{'userName':'******','password':'*********'}");
printWriter.flush();
BufferedInputStream bis = new BufferedInputStream(connection.getInputStream());
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int len;
byte[] arr = new byte[1024];
while((len=bis.read(arr))!= -1){
bos.write(arr,0,len);
bos.flush();
}
String cookiesHeader = connection.getHeaderField("Set-Cookie");
bos.close();
return cookiesHeader;
       } catch (Exception e) {
           e.printStackTrace();
       }finally{
           connection.disconnect();
       }
       return null;
   }