Java gwt google API调用导致“无法调用未定义的'newHttpRequest'方法”

我正在使用gwt-plus-v1-0.2-alpha API来：

允许谷歌登录 获取已登录用户的信息 Google登录可以正常工作，但获取用户信息失败，原因是

Cannot call method 'newHttpRequest' of undefined

错误

以下是我的GoogleApi助手类：

public final class GoogleApi {
    private static final Plus plus = GWT.create(Plus.class);

    private final String clientId;

    private final ClientOAuth2Login oAuth2Login;
    private ClientGoogleApiRequestTransport requestTransport;

    /**
     * @param clientId
     *            This app's personal client ID assigned by the Google APIs
     *            Console (http://code.google.com/apis/console)
     */
    public GoogleApi(EventBus eventBus, String clientId) {
        this.clientId = clientId;
        requestTransport = new ClientGoogleApiRequestTransport();
        requestTransport.setApplicationName(MY_APP_NAME)
                .setApiAccessKey(MY_API_KEY);
        plus.initialize(eventBus, requestTransport);
        oAuth2Login = new ClientOAuth2Login(clientId);
        oAuth2Login.withScopes(PlusAuthScope.PLUS_ME);
    }

    public void login(final Receiver<String> callback) {
        oAuth2Login.login(new Receiver<String>() {
            @Override
            public void onSuccess(String response) {
                requestTransport.setAccessToken(response);
                callback.onSuccess(response);
            }

            @Override
            public void onFailure(ServerFailure error) {
                Window.alert(error.getMessage());
            }
        });
    }

    public void getUserInfo(Receiver<Person> receiver) {
        plus.people().get("me").to(receiver).fire();
    }
}

以下显示了故障发生的位置：

GoogleApi googleApi = new GoogleApi(eventBus, MY_CLIENT_ID);

googleApi.login(new Receiver<String>() {
    @Override
    public void onSuccess(final String token) {
        // login is successful and access token is received

        // but the following call fails with "Cannot call method 'newHttpRequest'
        // of undefined" error
        googleApi.getUserInfo(new Receiver<Person>() {
            @Override
            public void onSuccess(Person person) {
                // never gets here
            }

            @Override
            public void onFailure(ServerFailure error) {
                // nor here
            }
        });
    }
}

---

尝试更新您的gwt google API库，早在6月份就有了一项更改，将对$wnd.googleapis.newHttpRequest的调用替换为对$wnd.gapi.client.rpcRequest的调用：

---

身份验证之所以有效，是因为它不使用相同的代码与服务器通信。

尝试更新您的gwt google API库，6月份发生了一次更改，将对$wnd.googleapis.newHttpRequest的调用替换为对$wnd.gapi.client.rpcRequest的调用：

---

身份验证之所以有效，是因为它不使用相同的代码与服务器进行通信。

我一直在使用1.0.2-alpha版本的代码，并使其有效！以下是更新的代码：

public final class GoogleApi {
    private static final Plus plus = GWT.create(Plus.class);

    private final String clientId;

    private EventBus eventBus;

    private final ClientOAuth2Login oAuth2Login;
    private ClientGoogleApiRequestTransport requestTransport;

    private String accessToken;

    /**
     * @param clientId
     *            This app's personal client ID assigned by the Google APIs
     *            Console (http://code.google.com/apis/console)
     */
    public GoogleApi(final EventBus eventBus, String clientId) {
        this.eventBus = eventBus;
        this.clientId = clientId;
        oAuth2Login = new ClientOAuth2Login(clientId);
        oAuth2Login.withScopes(PlusAuthScope.PLUS_ME);
    }

    public void login(final Receiver<String> callback) {
        oAuth2Login.login(new Receiver<String>() {
            @Override
            public void onSuccess(String response) {
                accessToken = response;
                callback.onSuccess(response);
            }

            @Override
            public void onFailure(ServerFailure error) {
                Window.alert(error.getMessage());
            }
        });
    }

    public void getUserInfo(final Receiver<Person> receiver) {
        requestTransport = new ClientGoogleApiRequestTransport();
        requestTransport.setApplicationName(ClientConstants.GOOGLE_APP_NAME)
                .setApiAccessKey(ClientConstants.GOOGLE_API_KEY)
                .setAccessToken(accessToken);
        requestTransport.create(new Receiver<GoogleApiRequestTransport>() {
            @Override
            public void onSuccess(GoogleApiRequestTransport transport) {
                plus.initialize(eventBus, transport);
                plus.people().get("me").to(receiver).fire();
            }
        });
    }
}

不过，我不知道这有多有效。每次调用getUserInfo时，都会调用Plus的initialize方法

---

对我来说，下一步是用最新版本的API手动构建一个jar，并相应地调整我的代码：/bick me luck

我一直在使用1.0.2-alpha版本的代码，并使其正常工作！以下是更新的代码：

public final class GoogleApi {
    private static final Plus plus = GWT.create(Plus.class);

    private final String clientId;

    private EventBus eventBus;

    private final ClientOAuth2Login oAuth2Login;
    private ClientGoogleApiRequestTransport requestTransport;

    private String accessToken;

    /**
     * @param clientId
     *            This app's personal client ID assigned by the Google APIs
     *            Console (http://code.google.com/apis/console)
     */
    public GoogleApi(final EventBus eventBus, String clientId) {
        this.eventBus = eventBus;
        this.clientId = clientId;
        oAuth2Login = new ClientOAuth2Login(clientId);
        oAuth2Login.withScopes(PlusAuthScope.PLUS_ME);
    }

    public void login(final Receiver<String> callback) {
        oAuth2Login.login(new Receiver<String>() {
            @Override
            public void onSuccess(String response) {
                accessToken = response;
                callback.onSuccess(response);
            }

            @Override
            public void onFailure(ServerFailure error) {
                Window.alert(error.getMessage());
            }
        });
    }

    public void getUserInfo(final Receiver<Person> receiver) {
        requestTransport = new ClientGoogleApiRequestTransport();
        requestTransport.setApplicationName(ClientConstants.GOOGLE_APP_NAME)
                .setApiAccessKey(ClientConstants.GOOGLE_API_KEY)
                .setAccessToken(accessToken);
        requestTransport.create(new Receiver<GoogleApiRequestTransport>() {
            @Override
            public void onSuccess(GoogleApiRequestTransport transport) {
                plus.initialize(eventBus, transport);
                plus.people().get("me").to(receiver).fire();
            }
        });
    }
}

不过，我不知道这有多有效。每次调用getUserInfo时，都会调用Plus的initialize方法

---

对我来说，下一步是用最新版本的API手动构建一个jar，并相应地调整我的代码：/bick me luck

谢谢你的回复，托马斯。是否有包含这些最新更改的可下载jar？我能找到的最新版本是3月份的v1.0.3。我无法使用最新版本的API，因此我将不得不使用我在自己的答案中粘贴的代码以及gwt-plus-v1.0.2-alpha。谢谢你的回复，Thomas。是否有包含这些最新更改的可下载jar？我能找到的最新版本是3月份的v1.0.3。我无法使用最新版本的API，因此我将不得不使用我在自己的答案中粘贴的代码以及gwt-plus-v1.0.2-alpha.jar