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# 列出证书
<a name="sdk-list"></a>

以下示例演示了如何使用 [ListCertificates](https://docs.aws.amazon.com/acm/latest/APIReference/API_ListCertificates.html) 函数。

```
package com.amazonaws.samples;

import com.amazonaws.services.certificatemanager.AWSCertificateManagerClientBuilder;
import com.amazonaws.services.certificatemanager.AWSCertificateManager;
import com.amazonaws.services.certificatemanager.model.ListCertificatesRequest;
import com.amazonaws.services.certificatemanager.model.ListCertificatesResult;

import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.regions.Regions;

import com.amazonaws.AmazonClientException;

import java.util.Arrays;
import java.util.List;

/**
 * This sample demonstrates how to use the ListCertificates function in the AWS Certificate
 * Manager service.
 *
 * Input parameters:
 *   CertificateStatuses - An array of strings that contains the statuses to use for filtering.
 *   MaxItems - The maximum number of certificates to return in the response.
 *   NextToken - Use when paginating results.
 *
 * Output parameters:
 *   CertificateSummaryList - A list of certificates.
 *   NextToken - Use to show additional results when paginating a truncated list.
 *
 */

public class AWSCertificateManagerExample {

   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().getCredentials();
      }
      catch (Exception ex) {
          throw new AmazonClientException("Cannot load the credentials from file.", ex);
      }

      // Create a client.
      AWSCertificateManager client = AWSCertificateManagerClientBuilder.standard()
              .withRegion(Regions.US_EAST_1)
              .withCredentials(new AWSStaticCredentialsProvider(credentials))
              .build();

      // Create a request object and set the parameters.
      ListCertificatesRequest req = new ListCertificatesRequest();
      List<String> Statuses = Arrays.asList("ISSUED", "EXPIRED", "PENDING_VALIDATION", "FAILED");
      req.setCertificateStatuses(Statuses);
      req.setMaxItems(10);

      // Retrieve the list of certificates.
      ListCertificatesResult result = null;
      try {
         result = client.listCertificates(req);
      }
      catch (Exception ex)
      {
         throw ex;
      }

      // Display the certificate list.
      System.out.println(result);
   }
}
```

前面的示例将创建类似于以下内容的输出。

```
{
    CertificateSummaryList: [{
        CertificateArn: arn:aws:acm:region:account:certificate/12345678-1234-1234-1234-123456789012,
        DomainName: www.example1.com
    },
    {
        CertificateArn: arn:aws:acm:region:account:certificate/12345678-1234-1234-1234-123456789012,
        DomainName: www.example2.com
    },
    {
        CertificateArn: arn:aws:acm:region:account:certificate/12345678-1234-1234-1234-123456789012,
        DomainName: www.example3.com
    }]
}
```