问题
I'm trying to access data from the Google analytics reporting API using Java.
I was following the "Hello Analytics API: Java quickstart for installed applications" tutorial, and i did everything it tells you, and i get following issues:
com.google.api.client.util.store.FileDataStoreFactory setPermissionsToOwnerOnly
WARNING: unable to change permissions for everybody: C:\Users\<user>\.store\hello_analytics
com.google.api.client.util.store.FileDataStoreFactory setPermissionsToOwnerOnly
WARNING: unable to change permissions for owner: C:\Users\timst\.store\hello_analytics
java.lang.NullPointerException
at java.io.Reader.<init>(Reader.java:78)
at java.io.InputStreamReader.<init>(InputStreamReader.java:72)
at com.example.demo.HelloAnalytics.initializeAnalytics(HelloAnalytics.java:60)
at com.example.demo.HelloAnalytics.main(HelloAnalytics.java:44)
I tried using the full path for the client_secret.json.
tried using different methods i found online, but none seem to work.
After getting frustrated by this error i tried the "Hello Analytics API: Java quickstart for service accounts" tutorial.
But here i have the issue that i can't add users to the account, property or view for the accounts i can access. I have access to other peoples analytics accounts and I can only remove myself from the accounts.
All code I'm using is from the tutorials, using Intellij and gradle.
tl;dr;All I want to do is access the analytics data for all my accounts, using the reporting API so i can put all this data in my own database and use this database for my other projects. the Tutorials google provides doesn't work for me. (the data is mostly Google Adwords data.)
回答1:
So the Warning is not the problem, it's a known issue with it not working properly on windows.
The java.lang.NullPointerException is because the profile I call to has no rows of data for the given metric. so the return value of the call doesn't have a .getRows() methode because there isn't a row value.
you should check for the row's first,
GaData results;
if (null != results) {
if(results.get("rows") != null){
if (!results.getRows().isEmpty()){
//do something with the rows exp.
for (List<String> row : results.getRows()) {
for (int i=0; i<results.getColumnHeaders().size();i++) {
List<GaData.ColumnHeaders> headers = results.getColumnHeaders();
System.out.println( headers.get(i).getName()+": " + row.get(i));
}
}
}
}
}
In the example I also use the ColumnHeaders, wich you should also check first.
It was also easier to check every single account i had access to and every webProperty and Profile and not just the first value of each of those.
Also, the query explorer is really useful. you should use it to check out which metrics you can use and which dimensions.
Here is my full HelloAnalytics class i just print everything that might be usefull to the console i also use multiple metrics and a dimension from Google AdWords in the getResults methode:
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.analytics.Analytics;
import com.google.api.services.analytics.AnalyticsScopes;
import com.google.api.services.analytics.model.*;
import java.io.*;
import java.util.ArrayList;
import java.util.List;
/**
* A simple example of how to access the Google Analytics API.
*/
public class HelloAnalytics {
// Path to client_secrets.json file downloaded from the Developer's Console.
// The path is relative to HelloAnalytics.java.
private static final String CLIENT_SECRET_JSON_RESOURCE = "/client_secret.json";
// The directory where the user's credentials will be stored.
private static final File DATA_STORE_DIR = new File("out/DataStore/hello_analytics");
private static final File OUTPUT_FILE = new File("out/DataStore/output.text");
private static final String APPLICATION_NAME = "Online Marketing Buddy";
private static final JsonFactory JSON_FACTORY = GsonFactory.getDefaultInstance();
private static NetHttpTransport httpTransport;
private static FileDataStoreFactory dataStoreFactory;
public static void main(String[] args) {
try {
Analytics analytics = initializeAnalytics();
getProfileIds(analytics);
} catch (Exception e) {
e.printStackTrace();
}
}
private static Analytics initializeAnalytics() throws Exception {
httpTransport = GoogleNetHttpTransport.newTrustedTransport();
dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR);
// Load client secrets.
InputStream in =
HelloAnalytics.class.getResourceAsStream(CLIENT_SECRET_JSON_RESOURCE);
GoogleClientSecrets clientSecrets =
GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));
// Set up authorization code flow for all auth scopes.
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow
.Builder(httpTransport, JSON_FACTORY, clientSecrets,AnalyticsScopes.all())
.setDataStoreFactory(dataStoreFactory)
.build();
// Authorize.
Credential credential = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver())
.authorize("user");
// Construct the Analytics service object.
Analytics response = new Analytics
.Builder(httpTransport, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME).build();
return response;
}
private static void getProfileIds(Analytics analytics) throws IOException {
// Get the all view (profile) IDs for the authorized user.
List<String> profileIds = new ArrayList<>();
// Query for the list of all accounts associated with the service account.
Accounts accounts = analytics.management().accounts().list().execute();
if (accounts.getItems().isEmpty()) {
System.err.println("No accounts found");
} else {
for (Account account : accounts.getItems()) {
System.out.println("account: " + account.getName());
String accountId = account.getId();
// Query for the list of properties associated with the each account.
Webproperties properties = analytics.management().webproperties()
.list(accountId).execute();
if (properties.getItems().isEmpty()) {
System.err.println("No properties found for accountId: " + accountId);
} else {
for (Webproperty webproperty : properties.getItems()) {
System.out.println("\nwebproperty: " + webproperty.getName());
String webpropertyId = webproperty.getId();
// Query for the list views (profiles) associated with the property.
Profiles profiles = analytics.management().profiles()
.list(accountId, webpropertyId).execute();
if (profiles.getItems().isEmpty()) {
System.err.println("No views (profiles) found for accoundId: " + accountId + "and webpropertyId: " + webpropertyId);
} else {
// Return the first (view) profile associated with the property.
for (Profile profile : profiles.getItems()) {
System.out.println("\nprofileId added for profile: " + profile.getName());
profileIds.add(profile.getId());
printResults(getResults(analytics,profile.getId()), profile.getId());
}
}
System.out.println("---------- ---------- end webproperty: " + webproperty.getName() + "---------- ----------");
}
}
System.out.println("---------- ---------- end account: " + account.getName() + "---------- ----------");
}
}
}
private static GaData getResults(Analytics analytics, String profileId) throws IOException {
// Query the Core Reporting API for the number of sessions
// in the past 30 days.
GaData data = analytics.data().ga()
.get("ga:" + profileId, "30daysAgo", "yesterday", "ga:adClicks, ga:adCost, ga:transactions, ga:transactionRevenue, ga:users, ga:sessions")
.setDimensions("ga:adwordsCampaignID")
.execute();
return data;
}
private static void printResults(GaData results, String profile) {
// Parse the response from the Core Reporting API for
// the profile name and number of sessions.
if (null != results) {
System.out.println("View (Profile: " + profile + ") Name: "
+ results.getProfileInfo().getProfileName() + "\n");
if (results.get("rows") != null && results.get("columnHeaders") != null) {
if (!results.getRows().isEmpty() && !results.getColumnHeaders().isEmpty()) {
for (List<String> row : results.getRows()) {
for (int i=0; i<results.getColumnHeaders().size();i++) {
List<GaData.ColumnHeaders> headers = results.getColumnHeaders();
System.out.println( headers.get(i).getName()+": " + row.get(i) + "\n");
}
System.out.println("---------- ---------- ----------\n");
}
} else {
System.out.println("No rows or columHeaders empty\n");
}
} else {
System.out.println("No rows or columHeaders\n");
}
}
}
}
来源：https://stackoverflow.com/questions/49787420/hello-analytics-api-java-quickstart-errors