官方文檔：https://developers.google.com/workspace/guides/configure-oauth-consent

https://developers.google.com/workspace/guides/create-credentials

參考視頻：https://www.youtube.com/watch?v=tGDn3V-mIOM

https://www.youtube.com/watch?v=IZ1ZEjuJF8U

OAuth2 client ID and client secret

新建 project

project 控制臺：https://console.cloud.google.com/cloud-resource-manager

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Enable Gmail Api

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點(diǎn)擊 Gmail Api 并 Enable

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新建 app

控制臺：https://console.cloud.google.com/apis/credentials/consent

打開控制臺，選擇 project：

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點(diǎn)擊菜單 OAuth consent screen，新建 app

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注：User type 只能選擇 External，Internal 是給 Google Worksapce 用戶使用的，是個(gè)收費(fèi)的產(chǎn)品

step1：

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step2：Scopes

這一步暫時(shí)不選擇，直接 ’保存并繼續(xù)‘

step3： add test users

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step4：創(chuàng)建完成

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step5: 發(fā)布 app，使 app 狀態(tài)處于 In production 狀態(tài)，防止 refresh token 失效

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新建 OAuth 2.0 Client

控制臺地址：https://console.developers.google.com/apis/credentials

點(diǎn)擊 Credentials 菜單

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保存并下載 .json 文件，可以命名為 credentials.json

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獲取 scope 對應(yīng)的 code

瀏覽器中請求如下 url

• scope 是需要的權(quán)限 https://developers.google.com/gmail/api/auth/scopes

• [your_client_id] 是上一步 credentials.json 中的 client_id 參數(shù)

https://accounts.google.com/o/oauth2/v2/auth?scope=https://mail.google.com/&access_type=offline&redirect_uri=http://localhost&response_type=code&client_id=[your_client_id]

請求之后，瀏覽器地址欄會出現(xiàn)如下鏈接

http://localhost/?code=4/0AX4XfWhkQGEQpDSfSwE2vOUDFpoNBLha_KBVYfngcBxnL0qLXQpEQ&scope=https://mail.google.com/

code 參數(shù)即我們需要的值

獲取 access_token 和 refresh_token

Wsl 執(zhí)行如下 url，code 來自上一步獲取的 code，client_id，client_secret 均來自 credentials.json

curl \ --request POST \ --data "code=4/0AX4XfWhkQGEQpDSfSwE2vOUDFpoNBVYfngcBxnL0VU1PlqLXQpEQ&client_id=358916748846-epks869ps.googleusercontent.com&client_secret=GOCSPX-ItJ5x6Bou5bTj&redirect_uri=http://localhost&grant_type=authorization_code" \ https://accounts.google.com/o/oauth2/token

返回：

{"access_token": "ya29.a0ARrdaM_9OV_3KTHol3hDWZnFtuxkFOCxPKBul8YZbSkjjM1L4rfx-iw35R9o4F_K27xFwwt_BJ2lzcZj5nkPyTTj-xNJ038gr9qS_z1ESQ67SJ","expires_in": 3599,"refresh_token": "1//0efEzWtmVh6BvCgYIARAAGA4SNwF-L9IrHZNakmKqCBBpMg--p5S4d9PgG2OzQY_26P6sHYrVc","scope": "https://mail.google.com/","token_type": "Bearer" }

認(rèn)證參考代碼1 (java)

private Gmail gmailService = null; private GoogleClientSecrets clientSecrets = null; private static final String CREDENTIALS_FILE_LOCATION = "configuration/gmail/credentials.json";@PostConstruct public void init() throws IOException, GeneralSecurityException {log.info("init gmailService start ...");clientSecrets = GoogleClientSecrets.load(JsonUtils.JSON_FACTORY,new InputStreamReader(GmailUtils.class.getClassLoader().getResourceAsStream(CREDENTIALS_FILE_LOCATION)));Credential authorize = new GoogleCredential.Builder().setTransport(GoogleNetHttpTransport.newTrustedTransport()).setJsonFactory(JsonUtils.JSON_FACTORY).setClientSecrets(clientSecrets.getDetails().getClientId(),clientSecrets.getDetails().getClientSecret()).build().setAccessToken(getAccessToken(gmailConfig.getGmailSettings().getRefreshToken(), gmailConfig.getGmailSettings().getTokenUrl())).setRefreshToken(gmailConfig.getGmailSettings().getRefreshToken());final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();gmailService = new Gmail.Builder(HTTP_TRANSPORT, JsonUtils.JSON_FACTORY, authorize).setApplicationName(gmailConfig.getGmailSettings().getApplicationName()).build();log.info("init gmailService completed ..."); }private String getAccessToken(String refreshToken, String tokenUrl) {Map<String, Object> params = new LinkedHashMap<>();params.put("grant_type", "refresh_token");params.put("client_id", clientSecrets.getDetails().getClientId());params.put("client_secret", clientSecrets.getDetails().getClientSecret());params.put("refresh_token", refreshToken);RequestBody authRequestBody = RequestBody.create(MediaType.parse("application/json;charset=UTF-8"), JsonUtils.toString(params));Request request = new Request.Builder().url(tokenUrl).method("POST", authRequestBody).build();String response = netUtils.executeRequest(request);JSONObject json = new JSONObject(response);return json.getString("access_token"); }

?認(rèn)證參考代碼2 (java)

public static Adsense createAdsense(AdsenseAccount account) throws IOException {HttpTransport HTTP_TRANSPORT = new NetHttpTransport();GoogleRefreshTokenRequest request = new GoogleRefreshTokenRequest(HTTP_TRANSPORT, JsonUtils.JSON_FACTORY,account.getRefreshToken(), account.getClientId(), account.getClientSecret()).setScopes(Collections.singleton(AdsenseScopes.ADSENSE_READONLY));Credential credential = new Credential.Builder(BearerToken.authorizationHeaderAccessMethod()).setTransport(HTTP_TRANSPORT).setJsonFactory(JsonUtils.JSON_FACTORY).setTokenServerUrl(new GenericUrl(GoogleOAuthConstants.TOKEN_SERVER_URL)).build().setFromTokenResponse(request.execute());return new Adsense.Builder(HTTP_TRANSPORT, JsonUtils.JSON_FACTORY, setHttpTimeout(credential)).setApplicationName("ad-data-scraper").build();}

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