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# DeleteCertificateAuthority


以下 Java 示例显示了如何使用该[DeleteCertificateAuthority](https://docs.amazonaws.cn/privateca/latest/APIReference/API_DeleteCertificateAuthority.html)操作。

此操作将删除您使用该[CreateCertificateAuthority](https://docs.amazonaws.cn/privateca/latest/APIReference/API_CreateCertificateAuthority.html)操作创建的私有证书颁发机构 (CA)。`DeleteCertificateAuthority` 操作要求您提供要删除的 CA 的 ARN。您可以通过调用操作来找到 ARN。[ListCertificateAuthorities](https://docs.amazonaws.cn/privateca/latest/APIReference/API_ListCertificateAuthorities.html)如果私有 CA 的状态为 `CREATING` 或 `PENDING_CERTIFICATE`，则可立即将其删除。但是，如果您已经导入此证书，则无法立即将其删除。必须先通过调用[UpdateCertificateAuthority](https://docs.amazonaws.cn/privateca/latest/APIReference/API_UpdateCertificateAuthority.html)操作来禁用 CA，然后将`Status`参数设置为`DISABLED`。然后，您可以使用 `DeleteCertificateAuthority` 操作中的 `PermanentDeletionTimeInDays` 参数指定天数（7 到 30 天）。在此期间，私有 CA 可以还原到 `disabled` 状态。默认情况下，如果未设置 `PermanentDeletionTimeInDays` 参数，则还原期为 30 天。在此期间后，私有 CA 将被永久删除，无法还原。有关更多信息，请参阅 [还原 CA](PCARestoreCA.md)。

有关向您展示如何使用该[RestoreCertificateAuthority](https://docs.amazonaws.cn/privateca/latest/APIReference/API_RestoreCertificateAuthority.html)操作的 Java 示例，请参阅[RestoreCertificateAuthority](JavaApi-RestoreCertificateAuthority.md)。

```
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.auth.AWSStaticCredentialsProvider;

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

import com.amazonaws.services.acmpca.model.DeleteCertificateAuthorityRequest;

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

public class DeleteCertificateAuthority {

   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 disk", 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 requrest object and set the ARN of the private CA to delete.
      DeleteCertificateAuthorityRequest req = new DeleteCertificateAuthorityRequest();

      // Set the certificate authority ARN.
      req.withCertificateAuthorityArn("arn:aws:acm-pca:us-east-1:111122223333:certificate-authority/11223344-1234-1122-2233-112233445566");
            
      // Set the recovery period.
      req.withPermanentDeletionTimeInDays(12);            

      // Delete the CA.
      try {
         client.deleteCertificateAuthority(req);
      } catch (ResourceNotFoundException ex) {
         throw ex;
      } catch (InvalidArnException ex) {
         throw ex;
      } catch (InvalidStateException ex) {
         throw ex;
      } catch (RequestFailedException ex) {
         throw ex;
      }
   }
}
```