本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# `DeletePolicy` 搭配 AWS SDK 或 CLI 使用
<a name="iam_example_iam_DeletePolicy_section"></a>

下列程式碼範例示範如何使用 `DeletePolicy`。

動作範例是大型程式的程式碼摘錄，必須在內容中執行。您可以在下列程式碼範例的內容中看到此動作：
+  [了解基本概念](iam_example_iam_Scenario_CreateUserAssumeRole_section.md) 
+  [建立唯讀和讀寫的使用者](iam_example_iam_Scenario_UserPolicies_section.md) 
+  [建立 Amazon Managed Grafana 工作區](iam_example_iam_GettingStarted_044_section.md) 
+  [Amazon MSK 入門](iam_example_ec2_GettingStarted_057_section.md) 
+  [Step Functions 入門](iam_example_iam_GettingStarted_080_section.md) 
+  [管理政策](iam_example_iam_Scenario_PolicyManagement_section.md) 
+  [設定 Systems Manager](iam_example_iam_GettingStarted_046_section.md) 

------
#### [ .NET ]

**適用於 .NET 的 SDK**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv3/IAM#code-examples)中設定和執行。

```
    /// <summary>
    /// Delete an IAM policy.
    /// </summary>
    /// <param name="policyArn">The Amazon Resource Name (ARN) of the policy to
    /// delete.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> DeletePolicyAsync(string policyArn)
    {
        var response = await _IAMService.DeletePolicyAsync(new DeletePolicyRequest { PolicyArn = policyArn });
        return response.HttpStatusCode == System.Net.HttpStatusCode.OK;
    }
```
+  如需 API 詳細資訊，請參閱 *適用於 .NET 的 AWS SDK API Reference* 中的 [DeletePolicy](https://docs.aws.amazon.com/goto/DotNetSDKV3/iam-2010-05-08/DeletePolicy)。

------
#### [ Bash ]

**AWS CLI 搭配 Bash 指令碼**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/aws-cli/bash-linux/iam#code-examples)中設定和執行。

```
###############################################################################
# function iecho
#
# This function enables the script to display the specified text only if
# the global variable $VERBOSE is set to true.
###############################################################################
function iecho() {
  if [[ $VERBOSE == true ]]; then
    echo "$@"
  fi
}

###############################################################################
# function errecho
#
# This function outputs everything sent to it to STDERR (standard error output).
###############################################################################
function errecho() {
  printf "%s\n" "$*" 1>&2
}

###############################################################################
# function iam_delete_policy
#
# This function deletes an IAM policy.
#
# Parameters:
#       -n policy_arn -- The name of the IAM policy arn.
#
# Returns:
#       0 - If successful.
#       1 - If it fails.
###############################################################################
function iam_delete_policy() {
  local policy_arn response
  local option OPTARG # Required to use getopts command in a function.

  # bashsupport disable=BP5008
  function usage() {
    echo "function iam_delete_policy"
    echo "Deletes an AWS Identity and Access Management (IAM) policy"
    echo "  -n policy_arn -- The name of the IAM policy arn."
    echo ""
  }

  # Retrieve the calling parameters.
  while getopts "n:h" option; do
    case "${option}" in
      n) policy_arn="${OPTARG}" ;;
      h)
        usage
        return 0
        ;;
      \?)
        echo "Invalid parameter"
        usage
        return 1
        ;;
    esac
  done
  export OPTIND=1

  if [[ -z "$policy_arn" ]]; then
    errecho "ERROR: You must provide a policy arn with the -n parameter."
    usage
    return 1
  fi

  iecho "Parameters:\n"
  iecho "    Policy arn:  $policy_arn"
  iecho ""

  response=$(aws iam delete-policy \
    --policy-arn "$policy_arn")

  local error_code=${?}

  if [[ $error_code -ne 0 ]]; then
    aws_cli_error_log $error_code
    errecho "ERROR: AWS reports delete-policy operation failed.\n$response"
    return 1
  fi

  iecho "delete-policy response:$response"
  iecho

  return 0
}
```
+  如需 API 詳細資訊，請參閱《AWS CLI 命令參考》**中的 [DeletePolicy](https://docs.aws.amazon.com/goto/aws-cli/iam-2010-05-08/DeletePolicy)。

------
#### [ C\$1\$1 ]

**SDK for C\$1\$1**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/iam#code-examples)中設定和執行。

```
bool AwsDoc::IAM::deletePolicy(const Aws::String &policyArn,
                               const Aws::Client::ClientConfiguration &clientConfig) {
    Aws::IAM::IAMClient iam(clientConfig);
    Aws::IAM::Model::DeletePolicyRequest request;
    request.SetPolicyArn(policyArn);

    auto outcome = iam.DeletePolicy(request);
    if (!outcome.IsSuccess()) {
        std::cerr << "Error deleting policy with arn " << policyArn << ": "
                  << outcome.GetError().GetMessage() << std::endl;
    }
    else {
        std::cout << "Successfully deleted policy with arn " << policyArn
                  << std::endl;
    }

    return outcome.IsSuccess();
}
```
+  如需 API 詳細資訊，請參閱 *適用於 C\$1\$1 的 AWS SDK API Reference* 中的 [DeletePolicy](https://docs.aws.amazon.com/goto/SdkForCpp/iam-2010-05-08/DeletePolicy)。

------
#### [ CLI ]

**AWS CLI**  
**刪除 IAM 政策**  
此範例會刪除 ARN 為 `arn:aws:iam::123456789012:policy/MySamplePolicy` 的政策。  

```
aws iam delete-policy \
    --policy-arn arn:aws:iam::123456789012:policy/MySamplePolicy
```
此命令不會產生輸出。  
如需詳細資訊，請參閱《AWS IAM 使用者指南》**中的 [IAM 中的政策和許可](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html)。  
+  如需 API 詳細資訊，請參閱《AWS CLI 命令參考》**中的 [DeletePolicy](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/iam/delete-policy.html)。

------
#### [ Go ]

**SDK for Go V2**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/gov2/iam#code-examples)中設定和執行。

```
import (
	"context"
	"encoding/json"
	"log"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/service/iam"
	"github.com/aws/aws-sdk-go-v2/service/iam/types"
)

// PolicyWrapper encapsulates AWS Identity and Access Management (IAM) policy actions
// used in the examples.
// It contains an IAM service client that is used to perform policy actions.
type PolicyWrapper struct {
	IamClient *iam.Client
}



// DeletePolicy deletes a policy.
func (wrapper PolicyWrapper) DeletePolicy(ctx context.Context, policyArn string) error {
	_, err := wrapper.IamClient.DeletePolicy(ctx, &iam.DeletePolicyInput{
		PolicyArn: aws.String(policyArn),
	})
	if err != nil {
		log.Printf("Couldn't delete policy %v. Here's why: %v\n", policyArn, err)
	}
	return err
}
```
+  如需 API 詳細資訊，請參閱 *適用於 Go 的 AWS SDK API Reference* 中的 [DeletePolicy](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/iam#Client.DeletePolicy)。

------
#### [ Java ]

**SDK for Java 2.x**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/iam#code-examples)中設定和執行。

```
import software.amazon.awssdk.services.iam.model.DeletePolicyRequest;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.iam.IamClient;
import software.amazon.awssdk.services.iam.model.IamException;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class DeletePolicy {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <policyARN>\s

                Where:
                    policyARN - A policy ARN value to delete.\s
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String policyARN = args[0];
        Region region = Region.AWS_GLOBAL;
        IamClient iam = IamClient.builder()
                .region(region)
                .build();

        deleteIAMPolicy(iam, policyARN);
        iam.close();
    }

    public static void deleteIAMPolicy(IamClient iam, String policyARN) {
        try {
            DeletePolicyRequest request = DeletePolicyRequest.builder()
                    .policyArn(policyARN)
                    .build();

            iam.deletePolicy(request);
            System.out.println("Successfully deleted the policy");

        } catch (IamException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        System.out.println("Done");
    }
}
```
+  如需 API 詳細資訊，請參閱 *AWS SDK for Java 2.x API Reference* 中的 [DeletePolicy](https://docs.aws.amazon.com/goto/SdkForJavaV2/iam-2010-05-08/DeletePolicy)。

------
#### [ JavaScript ]

**SDK for JavaScript (v3)**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javascriptv3/example_code/iam/#code-examples)中設定和執行。
刪除政策。  

```
import { DeletePolicyCommand, IAMClient } from "@aws-sdk/client-iam";

const client = new IAMClient({});

/**
 *
 * @param {string} policyArn
 */
export const deletePolicy = (policyArn) => {
  const command = new DeletePolicyCommand({ PolicyArn: policyArn });
  return client.send(command);
};
```
+  如需 API 詳細資訊，請參閱《適用於 JavaScript 的 AWS SDK API 參考》中的 [DeletePolicy](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/iam/command/DeletePolicyCommand)。

------
#### [ Kotlin ]

**SDK for Kotlin**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/iam#code-examples)中設定和執行。

```
suspend fun deleteIAMPolicy(policyARNVal: String?) {
    val request =
        DeletePolicyRequest {
            policyArn = policyARNVal
        }

    IamClient.fromEnvironment { region = "AWS_GLOBAL" }.use { iamClient ->
        iamClient.deletePolicy(request)
        println("Successfully deleted $policyARNVal")
    }
}
```
+  如需 API 詳細資訊，請參閱 *AWS SDK for Kotlin API reference* 中的 [DeletePolicy](https://sdk.amazonaws.com/kotlin/api/latest/index.html)。

------
#### [ PowerShell ]

**Tools for PowerShell V4**  
**範例 1：此範例會刪除 ARN 為 `arn:aws:iam::123456789012:policy/MySamplePolicy` 的政策。在刪除政策之前，必須先執行 `Remove-IAMPolicyVersion` 刪除除預設版本之外的所有版本。還必須將政策與任何 IAM 使用者、群組或角色分離。**  

```
Remove-IAMPolicy -PolicyArn arn:aws:iam::123456789012:policy/MySamplePolicy
```
**範例 2：此範例會刪除政策，方法是先刪除所有非預設政策版本，將其與所有連接的 IAM 實體分離，最後刪除政策本身。第一行擷取政策物件。第二行擷取未標記為集合預設版本的所有政策版本，然後刪除集合中的每個政策。第三行擷取連接政策的所有 IAM 使用者、群組和角色。第四行到第六行將政策與每個連接的實體分離。最後一行使用此命令移除受管政策以及剩餘的預設版本。此範例會在任何需要 `-Force` 切換參數的行中加入該參數，以抑制確認提示。**  

```
$pol = Get-IAMPolicy -PolicyArn arn:aws:iam::123456789012:policy/MySamplePolicy
Get-IAMPolicyVersions -PolicyArn $pol.Arn | where {-not $_.IsDefaultVersion} | Remove-IAMPolicyVersion -PolicyArn $pol.Arn -force
$attached = Get-IAMEntitiesForPolicy -PolicyArn $pol.Arn
$attached.PolicyGroups | Unregister-IAMGroupPolicy -PolicyArn $pol.arn
$attached.PolicyRoles | Unregister-IAMRolePolicy -PolicyArn $pol.arn
$attached.PolicyUsers | Unregister-IAMUserPolicy -PolicyArn $pol.arn
Remove-IAMPolicy $pol.Arn -Force
```
+  如需 API 詳細資訊，請參閱《*AWS Tools for PowerShell Cmdlet 參考 (V4)*》中的 [DeletePolicy](https://docs.aws.amazon.com/powershell/v4/reference)。

**Tools for PowerShell V5**  
**範例 1：此範例會刪除 ARN 為 `arn:aws:iam::123456789012:policy/MySamplePolicy` 的政策。在刪除政策之前，必須先執行 `Remove-IAMPolicyVersion` 刪除除預設版本之外的所有版本。還必須將政策與任何 IAM 使用者、群組或角色分離。**  

```
Remove-IAMPolicy -PolicyArn arn:aws:iam::123456789012:policy/MySamplePolicy
```
**範例 2：此範例會刪除政策，方法是先刪除所有非預設政策版本，將其與所有連接的 IAM 實體分離，最後刪除政策本身。第一行擷取政策物件。第二行擷取未標記為集合預設版本的所有政策版本，然後刪除集合中的每個政策。第三行擷取連接政策的所有 IAM 使用者、群組和角色。第四行到第六行將政策與每個連接的實體分離。最後一行使用此命令移除受管政策以及剩餘的預設版本。此範例會在任何需要 `-Force` 切換參數的行中加入該參數，以抑制確認提示。**  

```
$pol = Get-IAMPolicy -PolicyArn arn:aws:iam::123456789012:policy/MySamplePolicy
Get-IAMPolicyVersions -PolicyArn $pol.Arn | where {-not $_.IsDefaultVersion} | Remove-IAMPolicyVersion -PolicyArn $pol.Arn -force
$attached = Get-IAMEntitiesForPolicy -PolicyArn $pol.Arn
$attached.PolicyGroups | Unregister-IAMGroupPolicy -PolicyArn $pol.arn
$attached.PolicyRoles | Unregister-IAMRolePolicy -PolicyArn $pol.arn
$attached.PolicyUsers | Unregister-IAMUserPolicy -PolicyArn $pol.arn
Remove-IAMPolicy $pol.Arn -Force
```
+  如需 API 詳細資訊，請參閱《AWS Tools for PowerShell Cmdlet 參考 (V5)》**中的 [DeletePolicy](https://docs.aws.amazon.com/powershell/v5/reference)。

------
#### [ Python ]

**適用於 Python 的 SDK (Boto3)**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/iam#code-examples)中設定和執行。

```
def delete_policy(policy_arn):
    """
    Deletes a policy.

    :param policy_arn: The ARN of the policy to delete.
    """
    try:
        iam.Policy(policy_arn).delete()
        logger.info("Deleted policy %s.", policy_arn)
    except ClientError:
        logger.exception("Couldn't delete policy %s.", policy_arn)
        raise
```
+  如需 API 詳細資訊，請參閱 *AWS SDK for Python (Boto3) API Reference* 中的 [DeletePolicy](https://docs.aws.amazon.com/goto/boto3/iam-2010-05-08/DeletePolicy)。

------
#### [ Rust ]

**SDK for Rust**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/rustv1/examples/iam#code-examples)中設定和執行。

```
pub async fn delete_policy(client: &iamClient, policy: Policy) -> Result<(), iamError> {
    client
        .delete_policy()
        .policy_arn(policy.arn.unwrap())
        .send()
        .await?;
    Ok(())
}
```
+  如需 API 詳細資訊，請參閱 *AWS SDK for Rust API reference* 中的 [DeletePolicy](https://docs.rs/aws-sdk-iam/latest/aws_sdk_iam/client/struct.Client.html#method.delete_policy)。

------
#### [ SAP ABAP ]

**適用於 SAP ABAP 的開發套件**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/iam#code-examples)中設定和執行。

```
    TRY.
        lo_iam->deletepolicy( iv_policyarn = iv_policy_arn ).
        MESSAGE 'Policy deleted successfully.' TYPE 'I'.
      CATCH /aws1/cx_iamnosuchentityex.
        MESSAGE 'Policy does not exist.' TYPE 'E'.
      CATCH /aws1/cx_iamdeleteconflictex.
        MESSAGE 'Policy cannot be deleted due to attachments.' TYPE 'E'.
    ENDTRY.
```
+  如需 API 詳細資訊，請參閱《適用於 *AWS SAP ABAP 的 SDK API 參考*》中的 [DeletePolicy](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)。

------
#### [ Swift ]

**適用於 Swift 的 SDK**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/swift/example_code/iam#code-examples)中設定和執行。

```
import AWSIAM
import AWSS3


    public func deletePolicy(policy: IAMClientTypes.Policy) async throws {
        let input = DeletePolicyInput(
            policyArn: policy.arn
        )
        do {
            _ = try await iamClient.deletePolicy(input: input)
        } catch {
            print("ERROR: deletePolicy:", dump(error))
            throw error
        }
    }
```
+  如需 API 詳細資訊，請參閱 *AWS SDK for Swift API reference* 中的 [DeletePolicy](https://sdk.amazonaws.com/swift/api/awsiam/latest/documentation/awsiam/iamclient/deletepolicy(input:))。

------

如需 AWS SDK 開發人員指南和程式碼範例的完整清單，請參閱 [搭配 AWS SDK 使用此服務](sdk-general-information-section.md)。此主題也包含有關入門的資訊和舊版 SDK 的詳細資訊。