Android的OkHttp包處理使用者認證的代碼執行個體分享_Android

OkHttp 提供了對使用者認證的支援。當 HTTP 響應的狀態碼是 401 時，OkHttp 會從設定的 Authenticator 對象中擷取到新的 Request 對象並再次嘗試發出請求。Authenticator 介面中的 authenticate 方法用來提供進行認證的 Request 對象，authenticateProxy 方法用來提供對Proxy 伺服器進行認證的 Request 對象。
使用者認證的樣本：

OkHttpClient client = new OkHttpClient();client.setAuthenticator(new Authenticator() {public Request authenticate(Proxy proxy, Response response) throws IOException {  String credential = Credentials.basic("user", "password");  return response.request().newBuilder()      .header("Authorization", credential)      .build();}public Request authenticateProxy(Proxy proxy, Response response) throws IOException {  return null;}});

進階
當需要實現一個 Basic challenge， 使用 Credentials.basic(username, password) 來編碼要求標頭。

private final OkHttpClient client = new OkHttpClient();public void run() throws Exception { client.setAuthenticator(new Authenticator() {  @Override public Request authenticate(Proxy proxy, Response response) {   System.out.println("Authenticating for response: " + response);   System.out.println("Challenges: " + response.challenges());   String credential = Credentials.basic("jesse", "password1");   return response.request().newBuilder()     .header("Authorization", credential)     .build();  }  @Override public Request authenticateProxy(Proxy proxy, Response response) {   return null; // Null indicates no attempt to authenticate.  } }); Request request = new Request.Builder()   .url("http://publicobject.com/secrets/hellosecret.txt")   .build(); Response response = client.newCall(request).execute(); if (!response.isSuccessful()) throw new IOException("Unexpected code " + response); System.out.println(response.body().string());}