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# CreatePermission
<a name="JavaApi-CreatePermission"></a>

Il seguente esempio di Java mostra come utilizzare l'[CreatePermission](https://docs.aws.amazon.com/privateca/latest/APIReference/API_CreatePermission.html)operazione.

L'operazione assegna le autorizzazioni di accesso da una CA privata a un responsabile del AWS servizio designato. Ai servizi può essere concessa l'autorizzazione per creare e recuperare certificati da una CA privata, nonché elencare le autorizzazioni attive concesse dalla CA privata. Per rinnovare automaticamente i certificati tramite ACM, è necessario assegnare tutte le possibili autorizzazioni (`IssueCertificate``GetCertificate`, e`ListPermissions`) dalla CA al responsabile del servizio ACM (). `acm.amazonaws.com` È possibile trovare l'ARN di una CA chiamando la [ListCertificateAuthorities](https://docs.aws.amazon.com/privateca/latest/APIReference/API_ListCertificateAuthorities.html)funzione.

Una volta creata un'autorizzazione, è possibile ispezionarla con la [ListPermissions](https://docs.aws.amazon.com/privateca/latest/APIReference/API_ListPermissions.html)funzione o eliminarla con la [DeletePermission](https://docs.aws.amazon.com/privateca/latest/APIReference/API_DeletePermission.html)funzione.

```
package com.amazonaws.samples;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.client.builder.AwsClientBuilder.EndpointConfiguration;
import com.amazonaws.AmazonClientException;
import com.amazonaws.auth.AWSStaticCredentialsProvider;

import com.amazonaws.services.acmpca.AWSACMPCA;
import com.amazonaws.services.acmpca.AWSACMPCAClientBuilder;

import com.amazonaws.services.acmpca.model.CreatePermissionRequest;
import com.amazonaws.services.acmpca.model.CreatePermissionResult;

import com.amazonaws.services.acmpca.model.InvalidArnException;
import com.amazonaws.services.acmpca.model.InvalidStateException;
import com.amazonaws.services.acmpca.model.LimitExceededException;
import com.amazonaws.services.acmpca.model.PermissionAlreadyExistsException;
import com.amazonaws.services.acmpca.model.RequestFailedException;
import com.amazonaws.services.acmpca.model.ResourceNotFoundException;

import java.util.ArrayList;

public class CreatePermission {

   public static void main(String[] args) throws Exception {

      // Retrieve your credentials from the C:\Users\name\.aws\credentials file
      // in Windows or the .aws/credentials file in Linux.
      AWSCredentials credentials = null;
      try {
         credentials = new ProfileCredentialsProvider("default").getCredentials();
      } catch (Exception e) {
         throw new AmazonClientException("Cannot load your credentials from file.", e);
      }

      // Define the endpoint for your sample.
      String endpointRegion = "{{region}}";  // Substitute your region here, e.g. "us-west-2"
      String endpointProtocol = "https://acm-pca." + endpointRegion + ".amazonaws.com/";
      EndpointConfiguration endpoint =
            new AwsClientBuilder.EndpointConfiguration(endpointProtocol, endpointRegion);

      // Create a client that you can use to make requests.
      AWSACMPCA client = AWSACMPCAClientBuilder.standard()
         .withEndpointConfiguration(endpoint)
         .withCredentials(new AWSStaticCredentialsProvider(credentials))
         .build();

      // Create a request object.
      CreatePermissionRequest req =
          new CreatePermissionRequest();
          
      //  Set the certificate authority ARN.
      req.setCertificateAuthorityArn("arn:{{aws}}:acm-pca:{{us-east-1}}:{{111122223333}}:certificate-authority/{{11223344-1234-1122-2233-112233445566}}");
            
      // Set the permissions to give the user.
      ArrayList<String> permissions = new ArrayList<>();
      permissions.add("IssueCertificate");
      permissions.add("GetCertificate");
      permissions.add("ListPermissions");

      req.setActions(permissions);
      
      // Set the Principal.
      req.setPrincipal("{{acm.amazonaws.com}}");

      // Create a result object.
      CreatePermissionResult result = null;
      try {
         result = client.createPermission(req);
      } catch (InvalidArnException ex) {
         throw ex;
      } catch (InvalidStateException ex) {
         throw ex;
      } catch (LimitExceededException ex) {
         throw ex;
      } catch (PermissionAlreadyExistsException ex) {
         throw ex;
      } catch (RequestFailedException ex) {
         throw ex;
      } catch (ResourceNotFoundException ex) {
         throw ex;
      }
   }
}
```