使用不同凭据访问 Google Analytics 报告数据时出现空指针异常
Null Pointer Exception when accessing Google Analytics report data using different credentials
我正在关注 tutorial 通过使用 Google 开发人员控制台执行简单的 GA 查询来访问 GA 帐户报告数据。
我按照教程中提到的所有步骤进行操作，代码运行良好。
我已经包含了下面的代码。
public class GoogleAnalyticsAccess {
private static final String APPLICATION_NAME = "GAAccess/1.0";
private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"), ".store/analytics_sample");
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
private static FileDataStoreFactory dataStoreFactory;
private static HttpTransport httpTransport;
public static Credential authorizeUser() throws IOException {
GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(
GoogleAnalyticsAccess.class.getResourceAsStream("/client_secrets.json")));
if (clientSecrets.getDetails().getClientId().startsWith("Enter") ||
clientSecrets.getDetails().getClientSecret().startsWith("Enter ")) {
System.out.println("Enter Client ID and Secret from https://code.google.com/apis/console/?api=analytics " +
"into Dashboard/src/main/resources/client_secrets.json");
System.exit(1);
}
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(httpTransport, JSON_FACTORY,
clientSecrets, Collections.singleton(AnalyticsScopes.ANALYTICS_READONLY))
.setDataStoreFactory(dataStoreFactory).build();
return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
}
public static Analytics getAnalyticsServiceObject(Credential credential){
return new Analytics.Builder(httpTransport, JSON_FACTORY, credential).setApplicationName(APPLICATION_NAME)
.build();
}
public static String getGAAccountId(Analytics analytics) throws IOException {
String accountId =null;
Accounts accounts = analytics.management().accounts().list().execute();
List<Account> accountsList = accounts.getItems();
if(accountsList.isEmpty()){
System.err.println("No accounts found");
}
else{
for(int i=0; i<accountsList.size();i++){
if(accountsList.get(i).getName().equals("XXXX")){
accountId = accountsList.get(i).getId();
break;
}
}
}
return accountId;
}
public static String getGAWebPropertyId(Analytics analytics,String accountId) throws IOException {
String webPropertyId = null;
Webproperties webProperties = null;
webProperties = analytics.management().webproperties().list(accountId).execute();
List<Webproperty> webPropertiesList = webProperties.getItems();
if (webPropertiesList.isEmpty()) {
System.err.println("No Web Properties found");
} else {
for (int i=0; i<webPropertiesList.size();i++){
if(webPropertiesList.get(i).getName().equals("XXXX")){
webPropertyId = webPropertiesList.get(i).getId();
}
}
}
return webPropertyId;
}
public static String getGAViewId(Analytics analytics, String accountId, String webPropertyId) throws IOException {
String viewId = null;
Profiles views = analytics.management().profiles().list(accountId, webPropertyId).execute();
List<Profile> viewsList = views.getItems();
if (viewsList.isEmpty()) {
System.err.println("No profiles found");
} else {
for(int i=0; i<viewsList.size();i++){
if(viewsList.get(i).getName().equals("XXXX")){
viewId = viewsList.get(i).getId();
}
}
}
return viewId;
}
public static List<GoogleAnalyticsData> executeGAQuery(Analytics analytics, String viewId, String dimension) throws IOException {
List<GoogleAnalyticsData> dataList = new ArrayList<GoogleAnalyticsData>();
if (viewId == null) {
System.err.println("No profiles found.");
} else {
GaData gaData = analytics.data().ga().get("ga:" + viewId, "2015-02-13", "2015-02-27", "ga:users")
.setDimensions("ga:" + dimension)
.setMaxResults(200).execute();
if (gaData.getRows() == null || gaData.getRows().isEmpty()) {
System.out.println("No results Found.");
} else {
GoogleAnalyticsData data;
for (List<String> row : gaData.getRows()) {
data = new GoogleAnalyticsData();
data.setName(row.get(0));
data.setValue(Integer.parseInt(row.get(1)));
dataList.add(data);
}
}
}
return dataList;
}
public static void main(String[] args) throws GeneralSecurityException, IOException {
httpTransport = GoogleNetHttpTransport.newTrustedTransport();
dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR);
Credential credential = authorizeUser();
Analytics analytics = getAnalyticsServiceObject(credential);
String accountId = getGAAccountId(analytics);
String webPropertyId = getGAWebPropertyId(analytics,accountId);
String viewId = getGAViewId(analytics,accountId,webPropertyId);
List<GoogleAnalyticsData> continentDataList = executeGAQuery(analytics, viewId, "continent");
List<GoogleAnalyticsData> countryDataList = executeGAQuery(analytics, viewId, "country");
for(int i =0; i <continentDataList.size();i++){
System.out.println(continentDataList.get(i).getName() + " " + continentDataList.get(i).getValue());
}
for(int i=0; i< countryDataList.size();i++){
System.out.println(countryDataList.get(i).getName() + " " + countryDataList.get(i).getValue());
}
}
}
当我通过提供另一个用户的凭据（客户端密码和 ID）访问相同的 GA 帐户报告数据时，我收到了一个错误，该用户也可以共享该报告数据的访问权限。
我可以使用其他用户凭据成功访问报告数据如果我已经 运行 java 应用程序首先使用我的凭据。但是，如果我 运行 应用程序首先使用其他用户凭据，则会出现以下错误。
堆栈跟踪如下所示。
Exception in thread "main" java.lang.NullPointerException
at com.google.api.client.repackaged.com.google.common.base.Preconditions.checkNotNull(Preconditions.java:191)
at com.google.api.client.util.Preconditions.checkNotNull(Preconditions.java:127)
at com.google.api.client.json.jackson2.JacksonFactory.createJsonParser(JacksonFactory.java:92)
at com.google.api.client.json.JsonObjectParser.parseAndClose(JsonObjectParser.java:85)
at com.google.api.client.json.JsonObjectParser.parseAndClose(JsonObjectParser.java:81)
at com.google.api.client.auth.oauth2.TokenResponseException.from(TokenResponseException.java:88)
at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:287)
at com.google.api.client.auth.oauth2.TokenRequest.execute(TokenRequest.java:307)
at com.google.api.client.auth.oauth2.Credential.executeRefreshToken(Credential.java:570)
at com.google.api.client.auth.oauth2.Credential.refreshToken(Credential.java:489)
at com.google.api.client.auth.oauth2.Credential.intercept(Credential.java:217)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:859)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:410)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:343)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:460)
at org.dashboard.access.data.GoogleAnalyticsAccess.getGAAccountId(GoogleAnalyticsAccess.java:266)
at org.dashboard.access.data.GoogleAnalyticsAccess.main(GoogleAnalyticsAccess.java:364)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
具体的异常发生在方法getGAAccountId的下面一行。
Accounts accounts = analytics.management().accounts().list().execute();
这个问题有什么解决方法吗？
如果您的 client_secrets.json 配置正确，您只需删除文件。store/analytics_sample 并再次 运行 它。
我正在关注 tutorial 通过使用 Google 开发人员控制台执行简单的 GA 查询来访问 GA 帐户报告数据。 我按照教程中提到的所有步骤进行操作，代码运行良好。
我已经包含了下面的代码。
public class GoogleAnalyticsAccess {
private static final String APPLICATION_NAME = "GAAccess/1.0";
private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"), ".store/analytics_sample");
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
private static FileDataStoreFactory dataStoreFactory;
private static HttpTransport httpTransport;
public static Credential authorizeUser() throws IOException {
GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(
GoogleAnalyticsAccess.class.getResourceAsStream("/client_secrets.json")));
if (clientSecrets.getDetails().getClientId().startsWith("Enter") ||
clientSecrets.getDetails().getClientSecret().startsWith("Enter ")) {
System.out.println("Enter Client ID and Secret from https://code.google.com/apis/console/?api=analytics " +
"into Dashboard/src/main/resources/client_secrets.json");
System.exit(1);
}
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(httpTransport, JSON_FACTORY,
clientSecrets, Collections.singleton(AnalyticsScopes.ANALYTICS_READONLY))
.setDataStoreFactory(dataStoreFactory).build();
return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
}
public static Analytics getAnalyticsServiceObject(Credential credential){
return new Analytics.Builder(httpTransport, JSON_FACTORY, credential).setApplicationName(APPLICATION_NAME)
.build();
}
public static String getGAAccountId(Analytics analytics) throws IOException {
String accountId =null;
Accounts accounts = analytics.management().accounts().list().execute();
List<Account> accountsList = accounts.getItems();
if(accountsList.isEmpty()){
System.err.println("No accounts found");
}
else{
for(int i=0; i<accountsList.size();i++){
if(accountsList.get(i).getName().equals("XXXX")){
accountId = accountsList.get(i).getId();
break;
}
}
}
return accountId;
}
public static String getGAWebPropertyId(Analytics analytics,String accountId) throws IOException {
String webPropertyId = null;
Webproperties webProperties = null;
webProperties = analytics.management().webproperties().list(accountId).execute();
List<Webproperty> webPropertiesList = webProperties.getItems();
if (webPropertiesList.isEmpty()) {
System.err.println("No Web Properties found");
} else {
for (int i=0; i<webPropertiesList.size();i++){
if(webPropertiesList.get(i).getName().equals("XXXX")){
webPropertyId = webPropertiesList.get(i).getId();
}
}
}
return webPropertyId;
}
public static String getGAViewId(Analytics analytics, String accountId, String webPropertyId) throws IOException {
String viewId = null;
Profiles views = analytics.management().profiles().list(accountId, webPropertyId).execute();
List<Profile> viewsList = views.getItems();
if (viewsList.isEmpty()) {
System.err.println("No profiles found");
} else {
for(int i=0; i<viewsList.size();i++){
if(viewsList.get(i).getName().equals("XXXX")){
viewId = viewsList.get(i).getId();
}
}
}
return viewId;
}
public static List<GoogleAnalyticsData> executeGAQuery(Analytics analytics, String viewId, String dimension) throws IOException {
List<GoogleAnalyticsData> dataList = new ArrayList<GoogleAnalyticsData>();
if (viewId == null) {
System.err.println("No profiles found.");
} else {
GaData gaData = analytics.data().ga().get("ga:" + viewId, "2015-02-13", "2015-02-27", "ga:users")
.setDimensions("ga:" + dimension)
.setMaxResults(200).execute();
if (gaData.getRows() == null || gaData.getRows().isEmpty()) {
System.out.println("No results Found.");
} else {
GoogleAnalyticsData data;
for (List<String> row : gaData.getRows()) {
data = new GoogleAnalyticsData();
data.setName(row.get(0));
data.setValue(Integer.parseInt(row.get(1)));
dataList.add(data);
}
}
}
return dataList;
}
public static void main(String[] args) throws GeneralSecurityException, IOException {
httpTransport = GoogleNetHttpTransport.newTrustedTransport();
dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR);
Credential credential = authorizeUser();
Analytics analytics = getAnalyticsServiceObject(credential);
String accountId = getGAAccountId(analytics);
String webPropertyId = getGAWebPropertyId(analytics,accountId);
String viewId = getGAViewId(analytics,accountId,webPropertyId);
List<GoogleAnalyticsData> continentDataList = executeGAQuery(analytics, viewId, "continent");
List<GoogleAnalyticsData> countryDataList = executeGAQuery(analytics, viewId, "country");
for(int i =0; i <continentDataList.size();i++){
System.out.println(continentDataList.get(i).getName() + " " + continentDataList.get(i).getValue());
}
for(int i=0; i< countryDataList.size();i++){
System.out.println(countryDataList.get(i).getName() + " " + countryDataList.get(i).getValue());
}
}
}
当我通过提供另一个用户的凭据（客户端密码和 ID）访问相同的 GA 帐户报告数据时，我收到了一个错误，该用户也可以共享该报告数据的访问权限。 我可以使用其他用户凭据成功访问报告数据如果我已经 运行 java 应用程序首先使用我的凭据。但是，如果我 运行 应用程序首先使用其他用户凭据，则会出现以下错误。
堆栈跟踪如下所示。
Exception in thread "main" java.lang.NullPointerException
at com.google.api.client.repackaged.com.google.common.base.Preconditions.checkNotNull(Preconditions.java:191)
at com.google.api.client.util.Preconditions.checkNotNull(Preconditions.java:127)
at com.google.api.client.json.jackson2.JacksonFactory.createJsonParser(JacksonFactory.java:92)
at com.google.api.client.json.JsonObjectParser.parseAndClose(JsonObjectParser.java:85)
at com.google.api.client.json.JsonObjectParser.parseAndClose(JsonObjectParser.java:81)
at com.google.api.client.auth.oauth2.TokenResponseException.from(TokenResponseException.java:88)
at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:287)
at com.google.api.client.auth.oauth2.TokenRequest.execute(TokenRequest.java:307)
at com.google.api.client.auth.oauth2.Credential.executeRefreshToken(Credential.java:570)
at com.google.api.client.auth.oauth2.Credential.refreshToken(Credential.java:489)
at com.google.api.client.auth.oauth2.Credential.intercept(Credential.java:217)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:859)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:410)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:343)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:460)
at org.dashboard.access.data.GoogleAnalyticsAccess.getGAAccountId(GoogleAnalyticsAccess.java:266)
at org.dashboard.access.data.GoogleAnalyticsAccess.main(GoogleAnalyticsAccess.java:364)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
具体的异常发生在方法getGAAccountId的下面一行。
Accounts accounts = analytics.management().accounts().list().execute();
这个问题有什么解决方法吗？
如果您的 client_secrets.json 配置正确，您只需删除文件。store/analytics_sample 并再次 运行 它。