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用Java发送带有HTTP请求的cookie

cookies http java

nkr1pt · 技术社区 · 16 年前

服务器分发的cookie在会话结束时过期。

在我看来,cookie是有效的,因为当我在Firefox中进行相同的调用时,Firefox中存储了一个类似的cookie,它具有相同的名称,以前3个相同的字母开头,长度相同,在会话结束时也会过期。

// Validate
        url = new URL(URL_VALIDATE);
        conn = (HttpURLConnection) url.openConnection();
        conn.setRequestProperty("Cookie", cookie);
        conn.connect();

        String headerName = null;
        for (int i = 1; (headerName = conn.getHeaderFieldKey(i)) != null; i++) {
            if (headerName.equals("Set-Cookie")) {
                if (conn.getHeaderField(i).startsWith("JSESSIONID")) {
                    cookie = conn.getHeaderField(i).substring(0, conn.getHeaderField(i).indexOf(";")).trim();
                }
            }
        }

        // Get the XML
        url = new URL(URL_XML_TOTALS);
        conn = (HttpURLConnection) url.openConnection();
        conn.setRequestProperty("Cookie", cookie);
        conn.connect();

        // Get the response
        StringBuffer answer = new StringBuffer();
        BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        String line;
        while ((line = reader.readLine()) != null) {
            answer.append(line);
        }
        reader.close();

        //Output the response
        System.out.println(answer.toString())

1 回复 | 直到 14 年前

McDowell rahul gupta 16 年前

CookieHandler 做重活。这是我之前做的一个:

public class MyCookieHandler extends CookieHandler {
  private final Map<String, List<String>> cookies = 
                                            new HashMap<String, List<String>>();

  @Override public Map<String, List<String>> get(URI uri,
      Map<String, List<String>> requestHeaders) throws IOException {
    Map<String, List<String>> ret = new HashMap<String, List<String>>();
    synchronized (cookies) {
      List<String> store = cookies.get(uri.getHost());
      if (store != null) {
        store = Collections.unmodifiableList(store);
        ret.put("Cookie", store);
      }
    }
    return Collections.unmodifiableMap(ret);
  }

  @Override public void put(URI uri, Map<String, List<String>> responseHeaders)
      throws IOException {
    List<String> newCookies = responseHeaders.get("Set-Cookie");
    if (newCookies != null) {
      synchronized (cookies) {
        List<String> store = cookies.get(uri.getHost());
        if (store == null) {
          store = new ArrayList<String>();
          cookies.put(uri.getHost(), store);
        }
        store.addAll(newCookies);
      }
    }
  }
}

这个 CookieHandler 假设您的cookie处理对于JVM是全局的;如果您想要每个线程的客户机会话或其他更复杂的事务处理,最好还是坚持使用手动方法。