Guida rapida di Java per i clienti che utilizzano un account di servizio
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Segui i passaggi descritti in questa guida rapida e in circa 10 minuti avrai una semplice app a riga di comando Java che invia richieste all'API cliente per la registrazione zero-touch utilizzando un account di servizio.
Prerequisiti
Per eseguire questa guida rapida, devi disporre di:
Passaggio 1: attiva l'API di registrazione zero-touch
- Utilizza questa procedura guidata per creare o selezionare un progetto in Google Developers Console e attivare automaticamente l'API. Fai clic su Continua, quindi su Vai alle credenziali.
.
- Imposta A quali dati accederai? su Dati dell'applicazione.
- Fai clic su Avanti. Dovresti visualizzare una richiesta di creazione di un account di servizio.
- Assegna un nome descrittivo a Nome account di servizio.
- Prendi nota dell'ID account di servizio (assomiglia a un indirizzo email) perché lo utilizzerai in seguito.
- Imposta Ruolo su Account di servizio > Utente account di servizio.
- Fai clic su Fine per completare la creazione dell'account di servizio.
- Fai clic sull'indirizzo email dell'account di servizio che hai creato.
- Fai clic su **Chiavi**.
- Fai clic su **Aggiungi chiave**, quindi su **Crea nuova chiave**.
- Per **Tipo di chiave**, seleziona **JSON**.
- Fai clic su Crea e la chiave privata viene scaricata sul computer.
- Fai clic su **Chiudi**.
- Sposta il file nella directory di lavoro e rinominalo
service_account_key.json.
Passaggio 2: prepara il progetto
Segui questi passaggi per configurare il tuo progetto Gradle:
Esegui il comando seguente per creare un nuovo progetto nella directory di lavoro:
gradle init --type basic
mkdir -p src/main/java src/main/resources
Copia il file service_account_key.json scaricato quando hai creato il tuo account di servizio nella directory src/main/resources/ creata sopra.
Apri il file build.gradle predefinito e sostituiscine il contenuto con il
codice seguente:
apply plugin: 'java'
apply plugin: 'application'
mainClassName = 'CustomerQuickstart'
sourceCompatibility = 1.7
targetCompatibility = 1.7
version = '1.0'
repositories {
mavenCentral()
}
dependencies {
compile 'com.google.api-client:google-api-client:2.2.0'
compile 'com.google.apis:google-api-services-androiddeviceprovisioning:v1-rev20230509-2.0.0'
compile 'com.google.auth:google-auth-library-oauth2-http:1.16.1'
compile 'com.google.auth:google-auth-library-credentials:1.16.1'
compile 'com.google.http-client:google-http-client:1.43.1'
compile 'com.google.oauth-client:google-oauth-client-jetty:1.34.1'
}
Passaggio 3: configura l'anteprima
Crea un file denominato src/main/java/CustomerQuickstart.java e copialo nel
seguire il codice e salvare il file.
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.androiddeviceprovisioning.v1.AndroidProvisioningPartner;
import com.google.api.services.androiddeviceprovisioning.v1.model.Company;
import com.google.api.services.androiddeviceprovisioning.v1.model.CustomerListCustomersResponse;
import com.google.api.services.androiddeviceprovisioning.v1.model.CustomerListDpcsResponse;
import com.google.api.services.androiddeviceprovisioning.v1.model.Dpc;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.ServiceAccountCredentials;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.List;
/** This class forms the quickstart introduction to the zero-touch enrollment customer API. */
public class CustomerQuickstart {
// A single auth scope is used for the zero-touch enrollment customer API.
private static final List<String> SCOPES =
Arrays.asList("https://www.googleapis.com/auth/androidworkzerotouchemm");
private static final String APP_NAME = "Zero-touch Enrollment Java Quickstart";
// Global shared instances
private static final JsonFactory JSON_FACTORY = GsonFactory.getDefaultInstance();
private static HttpTransport HTTP_TRANSPORT;
static {
try {
HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
} catch (Throwable t) {
t.printStackTrace();
System.exit(1);
}
}
/**
* Creates a GoogleCredentials object with the correct OAuth2 authorization for the service
* account that calls the reseller API. The service endpoint invokes this method when setting up a
* new service instance.
*
* @return an authorized GoogleCredentials object.
* @throws IOException
*/
public static GoogleCredentials authorize() throws IOException {
// Load service account key.
InputStream in = CustomerQuickstart.class.getResourceAsStream("/service_account_key.json");
// Create the credential scoped to the zero-touch enrollment customer APIs.
GoogleCredentials credential = ServiceAccountCredentials.fromStream(in).createScoped(SCOPES);
return credential;
}
/**
* Build and return an authorized zero-touch enrollment API client service. Use the service
* endpoint to call the API methods.
*
* @return an authorized client service endpoint
* @throws IOException
*/
public static AndroidProvisioningPartner getService() throws IOException {
GoogleCredentials credential = authorize();
HttpRequestInitializer requestInitializer = new HttpCredentialsAdapter(credential);
return new AndroidProvisioningPartner.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
.setApplicationName(APP_NAME)
.build();
}
/**
* Runs the zero-touch enrollment quickstart app.
*
* @throws IOException
*/
public static void main(String[] args) throws IOException {
// Create a zero-touch enrollment API service endpoint.
AndroidProvisioningPartner service = getService();
// Get the customer's account. Because a customer might have more
// than one, limit the results to the first account found.
AndroidProvisioningPartner.Customers.List accountRequest = service.customers().list();
accountRequest.setPageSize(1);
CustomerListCustomersResponse accountResponse = accountRequest.execute();
if (accountResponse.getCustomers().isEmpty()) {
// No accounts found for the user. Confirm the Google Account
// that authorizes the request can access the zero-touch portal.
System.out.println("No zero-touch enrollment account found.");
System.exit(-1);
}
Company customer = accountResponse.getCustomers().get(0);
String customerAccount = customer.getName();
// Send an API request to list all the DPCs available using the customer account.
AndroidProvisioningPartner.Customers.Dpcs.List request =
service.customers().dpcs().list(customerAccount);
CustomerListDpcsResponse response = request.execute();
// Print out the details of each DPC.
java.util.List<Dpc> dpcs = response.getDpcs();
for (Dpc dpcApp : dpcs) {
System.out.format("Name:%s APK:%s\n", dpcApp.getDpcName(), dpcApp.getPackageName());
}
}
}
Passaggio 4: esegui l'esempio
Utilizza la guida del sistema operativo per eseguire lo script nel file. Sui computer UNIX e Mac, esegui il comando seguente nel terminale:
gradle -q run
Note
- Evita di condividere il file
service_account_key.json con nessuno. Attenzione
per non includerlo nei repository di codice sorgente. Puoi trovare altri consigli su come gestire i secret dell'account di servizio.
Scopri di più
Salvo quando diversamente specificato, i contenuti di questa pagina sono concessi in base alla licenza Creative Commons Attribution 4.0, mentre gli esempi di codice sono concessi in base alla licenza Apache 2.0. Per ulteriori dettagli, consulta le norme del sito di Google Developers. Java è un marchio registrato di Oracle e/o delle sue consociate.
Ultimo aggiornamento 2025-08-29 UTC.
[null,null,["Ultimo aggiornamento 2025-08-29 UTC."],[[["\u003cp\u003eThis quickstart guide helps you create a simple Java command-line application that interacts with the zero-touch enrollment customer API using a service account in approximately 10 minutes.\u003c/p\u003e\n"],["\u003cp\u003eYou will need a service account linked to your zero-touch enrollment customer account, Java 1.7 or greater, Gradle 2.3 or greater, and internet access to complete this process.\u003c/p\u003e\n"],["\u003cp\u003eThe guide involves enabling the zero-touch enrollment API, creating a service account, downloading a JSON key file, preparing a Gradle project, and setting up the Java sample code.\u003c/p\u003e\n"],["\u003cp\u003eThe created Java application will interact with the API by listing all the DPCs available using the customer account, showcasing the API's functionality.\u003c/p\u003e\n"],["\u003cp\u003eAfter completing the quickstart, there are multiple resources for further reading, including the Google Developers Console help documentation, Google APIs Client for Java documentation, and Google APIs Client Javadocs.\u003c/p\u003e\n"]]],["This guide outlines creating a Java command-line application to interact with the zero-touch enrollment customer API. First, enable the API and create a service account, noting its ID and downloading its JSON key. Next, set up a Gradle project, placing the service account key in the resources directory, and configuring the `build.gradle` file. Finally, create the `CustomerQuickstart.java` file, including code that gets account credentials, builds an API service, and requests and displays a list of available DPCs, then run using `gradle -q run`.\n"],null,["# Java quickstart for customers using a service account\n\nFollow the steps in this quickstart guide, and in about 10 minutes you have\na simple Java command-line app that makes requests to the zero-touch\nenrollment customer API using a service account.\n\nPrerequisites\n-------------\n\nTo run this quickstart, you need:\n\n- A service account, that's linked to you zero-touch enrollment customer account. See [Get\n started](/zero-touch/guides/customer/service-accounts).\n- Java 1.7 or greater.\n- [Gradle 2.3 or greater](http://gradle.org/downloads).\n- Access to the internet and a web browser.\n\nStep 1: Turn on the zero-touch enrollment API\n---------------------------------------------\n\n1. Use [this\n wizard](https://console.developers.google.com/start/api?id=androiddeviceprovisioning.googleapis.com) to create or select a project in the Google Developers Console and automatically turn on the API. Click **Continue** , then **Go to credentials**.\n2. Set **What data will you be accessing?** to *Application data*.\n3. Click **Next**. You should be prompted to create a service account.\n4. Give a descriptive name for **Service account name**.\n5. Note the **Service account ID** (it looks like an email address) because you'll use it later.\n6. Set **Role** to *Service Accounts \\\u003e Service Account User*.\n7. Click **Done** to finish creating the service account.\n8. Click the email address for the service account that you created.\n9. Click \\*\\*Keys\\*\\*.\n10. Click \\*\\*Add key\\*\\*, then click \\*\\*Create new key\\*\\*.\n11. For \\*\\*Key type\\*\\*, select \\*\\*JSON\\*\\*.\n12. Click **Create** and the private key downloads to your computer.\n13. Click \\*\\*Close\\*\\*.\n14. Move the file to your working directory and rename it `service_account_key.json`.\n\n| **Warning:** Service account keys can become a security risk if not managed carefully. For advice see [best practices for managing API keys](https://cloud.google.com/iam/docs/best-practices-for-managing-service-account-keys).\n\nStep 2: Prepare the project\n---------------------------\n\nFollow the steps below to set up your Gradle project:\n\n1. Run the following command to create a new project in the working directory:\n\n gradle init --type basic\n mkdir -p src/main/java src/main/resources\n\n2. Copy the `service_account_key.json` you downloaded when you created your\n service account into the `src/main/resources/` directory you created above.\n\n3. Open the default `build.gradle` file and replace its contents with the\n following code:\n\n```carbon\napply plugin: 'java'\napply plugin: 'application'\n\nmainClassName = 'CustomerQuickstart'\nsourceCompatibility = 1.7\ntargetCompatibility = 1.7\nversion = '1.0'\n\nrepositories {\n mavenCentral()\n}\n\ndependencies {\n compile 'com.google.api-client:google-api-client:2.2.0'\n compile 'com.google.apis:google-api-services-androiddeviceprovisioning:v1-rev20230509-2.0.0'\n compile 'com.google.auth:google-auth-library-oauth2-http:1.16.1'\n compile 'com.google.auth:google-auth-library-credentials:1.16.1'\n compile 'com.google.http-client:google-http-client:1.43.1'\n compile 'com.google.oauth-client:google-oauth-client-jetty:1.34.1'\n}\n```\n\nStep 3: Set up the sample\n-------------------------\n\nCreate a file named `src/main/java/CustomerQuickstart.java` and copy in the\nfollowing code and save the file. \n\n```java\nimport com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;\nimport com.google.api.client.http.HttpRequestInitializer;\nimport com.google.api.client.http.HttpTransport;\nimport com.google.api.client.json.JsonFactory;\nimport com.google.api.client.json.gson.GsonFactory;\nimport com.google.api.services.androiddeviceprovisioning.v1.AndroidProvisioningPartner;\nimport com.google.api.services.androiddeviceprovisioning.v1.model.Company;\nimport com.google.api.services.androiddeviceprovisioning.v1.model.CustomerListCustomersResponse;\nimport com.google.api.services.androiddeviceprovisioning.v1.model.CustomerListDpcsResponse;\nimport com.google.api.services.androiddeviceprovisioning.v1.model.Dpc;\nimport com.google.auth.http.HttpCredentialsAdapter;\nimport com.google.auth.oauth2.GoogleCredentials;\nimport com.google.auth.oauth2.ServiceAccountCredentials;\nimport java.io.IOException;\nimport java.io.InputStream;\nimport java.util.Arrays;\nimport java.util.List;\n\n/** This class forms the quickstart introduction to the zero-touch enrollment customer API. */\npublic class CustomerQuickstart {\n\n // A single auth scope is used for the zero-touch enrollment customer API.\n private static final List\u003cString\u003e SCOPES =\n Arrays.asList(\"https://www.googleapis.com/auth/androidworkzerotouchemm\");\n private static final String APP_NAME = \"Zero-touch Enrollment Java Quickstart\";\n\n // Global shared instances\n private static final JsonFactory JSON_FACTORY = GsonFactory.getDefaultInstance();\n private static HttpTransport HTTP_TRANSPORT;\n\n static {\n try {\n HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();\n } catch (Throwable t) {\n t.printStackTrace();\n System.exit(1);\n }\n }\n\n /**\n * Creates a GoogleCredentials object with the correct OAuth2 authorization for the service\n * account that calls the reseller API. The service endpoint invokes this method when setting up a\n * new service instance.\n *\n * @return an authorized GoogleCredentials object.\n * @throws IOException\n */\n public static GoogleCredentials authorize() throws IOException {\n // Load service account key.\n InputStream in = CustomerQuickstart.class.getResourceAsStream(\"/service_account_key.json\");\n\n // Create the credential scoped to the zero-touch enrollment customer APIs.\n GoogleCredentials credential = ServiceAccountCredentials.fromStream(in).createScoped(SCOPES);\n return credential;\n }\n\n /**\n * Build and return an authorized zero-touch enrollment API client service. Use the service\n * endpoint to call the API methods.\n *\n * @return an authorized client service endpoint\n * @throws IOException\n */\n public static AndroidProvisioningPartner getService() throws IOException {\n GoogleCredentials credential = authorize();\n HttpRequestInitializer requestInitializer = new HttpCredentialsAdapter(credential);\n return new AndroidProvisioningPartner.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)\n .setApplicationName(APP_NAME)\n .build();\n }\n\n /**\n * Runs the zero-touch enrollment quickstart app.\n *\n * @throws IOException\n */\n public static void main(String[] args) throws IOException {\n\n // Create a zero-touch enrollment API service endpoint.\n AndroidProvisioningPartner service = getService();\n\n // Get the customer's account. Because a customer might have more\n // than one, limit the results to the first account found.\n AndroidProvisioningPartner.Customers.List accountRequest = service.customers().list();\n accountRequest.setPageSize(1);\n CustomerListCustomersResponse accountResponse = accountRequest.execute();\n if (accountResponse.getCustomers().isEmpty()) {\n // No accounts found for the user. Confirm the Google Account\n // that authorizes the request can access the zero-touch portal.\n System.out.println(\"No zero-touch enrollment account found.\");\n System.exit(-1);\n }\n Company customer = accountResponse.getCustomers().get(0);\n String customerAccount = customer.getName();\n\n // Send an API request to list all the DPCs available using the customer account.\n AndroidProvisioningPartner.Customers.Dpcs.List request =\n service.customers().dpcs().list(customerAccount);\n CustomerListDpcsResponse response = request.execute();\n\n // Print out the details of each DPC.\n java.util.List\u003cDpc\u003e dpcs = response.getDpcs();\n for (Dpc dpcApp : dpcs) {\n System.out.format(\"Name:%s APK:%s\\n\", dpcApp.getDpcName(), dpcApp.getPackageName());\n }\n }\n}\n```\n\nStep 4: Run the sample\n----------------------\n\nUse your operating system's help to run the script in the file. On UNIX and Mac\ncomputers, run the command below in your terminal: \n\n gradle -q run\n\nNotes\n-----\n\n- Avoid sharing your `service_account_key.json` file with anyone. Be careful not to include it in source code repositories. You can read more advice on [handling service account secrets](https://cloud.google.com/iam/docs/best-practices-for-managing-service-account-keys).\n\nLearn more\n----------\n\n- [Google Developers Console help documentation](/console/help/new)\n- [Google APIs Client for Java documentation](/api-client-library/java)\n- [Google APIs Client Javadocs](/api-client-library/java/google-api-java-client/reference)"]]
