在Android排球库中使用Cookie
有没有人知道如何使用com.android.volley库将会话cookie附加到请求中？ 当我登录到网站时，它会给我一个会话cookie。 浏览器会将该cookie发送回任何后续请求。 Volley似乎没有这样做，至少不会自动。
谢谢。
Volley本身并不实际发出HTTP请求，因此不直接管理Cookies。 而是使用HttpStack的一个实例来执行此操作。 有两个主要的实现：
Cookie管理是这些HttpStack的责任。 他们每个人都以不同方式处理Cookie
如果你需要支持<2.3，那么你应该使用HttpClientStack：
配置一个HttpClient实例，并将其传递给Volley以供它在底层使用：
// If you need to directly manipulate cookies later on, hold onto this client
// object as it gives you access to the Cookie Store
DefaultHttpClient httpclient = new DefaultHttpClient();
CookieStore cookieStore = new BasicCookieStore();
httpclient.setCookieStore( cookieStore );
HttpStack httpStack = new HttpClientStack( httpclient );
RequestQueue requestQueue = Volley.newRequestQueue( context, httpStack );
与手动将Cookie插入标头的优点是，您可以获得实际的Cookie管理。 您商店中的Cookie将正确响应过期或更新它们的HTTP控件。
我已经更进了一步，将BasicCookieStore分类，以便我可以自动将Cookie保存到磁盘。
然而！ 如果你不需要支持旧版本的Android。 只需使用这种方法：
// CookieStore is just an interface, you can implement it and do things like
// save the cookies to disk or what ever.
CookieStore cookieStore = new MyCookieStore();
CookieManager manager = new CookieManager( cookieStore, CookiePolicy.ACCEPT_ALL );
CookieHandler.setDefault( manager );
// Optionally, you can just use the default CookieManager
CookieManager manager = new CookieManager();
CookieHandler.setDefault( manager );
HttpURLConnection将隐式地从中查询CookieManager。 HttpUrlConnection的性能也更高，并且在实施和使用IMO方面稍微清晰一些。
vmirinov是对的！
这是我解决问题的方法：
请求类：
public class StringRequest extends com.android.volley.toolbox.StringRequest {
private final Map<String, String> _params;
/**
* @param method
* @param url
* @param params
* A {@link HashMap} to post with the request. Null is allowed
* and indicates no parameters will be posted along with request.
* @param listener
* @param errorListener
*/
public StringRequest(int method, String url, Map<String, String> params, Listener<String> listener,
ErrorListener errorListener) {
super(method, url, listener, errorListener);
_params = params;
}
@Override
protected Map<String, String> getParams() {
return _params;
}
/* (non-Javadoc)
* @see com.android.volley.toolbox.StringRequest#parseNetworkResponse(com.android.volley.NetworkResponse)
*/
@Override
protected Response<String> parseNetworkResponse(NetworkResponse response) {
// since we don't know which of the two underlying network vehicles
// will Volley use, we have to handle and store session cookies manually
MyApp.get().checkSessionCookie(response.headers);
return super.parseNetworkResponse(response);
}
/* (non-Javadoc)
* @see com.android.volley.Request#getHeaders()
*/
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> headers = super.getHeaders();
if (headers == null
|| headers.equals(Collections.emptyMap())) {
headers = new HashMap<String, String>();
}
MyApp.get().addSessionCookie(headers);
return headers;
}
}
和MyApp：
public class MyApp extends Application {
private static final String SET_COOKIE_KEY = "Set-Cookie";
private static final String COOKIE_KEY = "Cookie";
private static final String SESSION_COOKIE = "sessionid";
private static MyApp _instance;
private RequestQueue _requestQueue;
private SharedPreferences _preferences;
public static MyApp get() {
return _instance;
}
@Override
public void onCreate() {
super.onCreate();
_instance = this;
_preferences = PreferenceManager.getDefaultSharedPreferences(this);
_requestQueue = Volley.newRequestQueue(this);
}
public RequestQueue getRequestQueue() {
return _requestQueue;
}
/**
* Checks the response headers for session cookie and saves it
* if it finds it.
* @param headers Response Headers.
*/
public final void checkSessionCookie(Map<String, String> headers) {
if (headers.containsKey(SET_COOKIE_KEY)
&& headers.get(SET_COOKIE_KEY).startsWith(SESSION_COOKIE)) {
String cookie = headers.get(SET_COOKIE_KEY);
if (cookie.length() > 0) {
String[] splitCookie = cookie.split(";");
String[] splitSessionId = splitCookie[0].split("=");
cookie = splitSessionId[1];
Editor prefEditor = _preferences.edit();
prefEditor.putString(SESSION_COOKIE, cookie);
prefEditor.commit();
}
}
}
/**
* Adds session cookie to headers if exists.
* @param headers
*/
public final void addSessionCookie(Map<String, String> headers) {
String sessionId = _preferences.getString(SESSION_COOKIE, "");
if (sessionId.length() > 0) {
StringBuilder builder = new StringBuilder();
builder.append(SESSION_COOKIE);
builder.append("=");
builder.append(sessionId);
if (headers.containsKey(COOKIE_KEY)) {
builder.append("; ");
builder.append(headers.get(COOKIE_KEY));
}
headers.put(COOKIE_KEY, builder.toString());
}
}
}
Volley的默认HTTP传输代码是HttpUrlConnection 。 如果我正确阅读文档，则需要选择自动会话cookie支持：
CookieManager cookieManager = new CookieManager();
CookieHandler.setDefault(cookieManager);
另请参见应Cookie的HttpURLConnection自动处理会话Cookie？
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