# 配置一个将 API 密钥与 OpenAPI 定义结合使用的方法
<a name="api-key-usage-plan-oas"></a>

您可以使用 OpenAPI 定义来要求对方法使用 API 密钥。

对于每个方法，创建一个安全要求对象，来要求使用 API 密钥调用该方法。然后，在安全定义中定义 `api_key`。创建 API 后，将新的 API 阶段添加到您的使用计划中。

以下示例创建一个 API，并要求为 `POST` 和 `GET` 方法提供 API 密钥：

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#### [ OpenAPI 2.0 ]

```
{
  "swagger" : "2.0",
  "info" : {
    "version" : "2024-03-14T20:20:12Z",
    "title" : "keys-api"
  },
  "basePath" : "/v1",
  "schemes" : [ "https" ],
  "paths" : {
    "/pets" : {
      "get" : {
        "responses" : { },
        "security" : [ {
          "api_key" : [ ]
        } ],
        "x-amazon-apigateway-integration" : {
          "type" : "http_proxy",
          "httpMethod" : "GET",
          "uri" : "http://petstore-demo-endpoint.execute-api.com/petstore/pets/",
          "passthroughBehavior" : "when_no_match"
        }
      },
      "post" : {
        "responses" : { },
        "security" : [ {
          "api_key" : [ ]
        } ],
        "x-amazon-apigateway-integration" : {
          "type" : "http_proxy",
          "httpMethod" : "GET",
          "uri" : "http://petstore-demo-endpoint.execute-api.com/petstore/pets/",
          "passthroughBehavior" : "when_no_match"
        }
      }
    }
  },
  "securityDefinitions" : {
    "api_key" : {
      "type" : "apiKey",
      "name" : "x-api-key",
      "in" : "header"
    }
  }
}
```

------
#### [ OpenAPI 3.0 ]

```
{
  "openapi" : "3.0.1",
  "info" : {
    "title" : "keys-api",
    "version" : "2024-03-14T20:20:12Z"
  },
  "servers" : [ {
    "url" : "{basePath}",
    "variables" : {
      "basePath" : {
        "default" : "v1"
      }
    }
  } ],
  "paths" : {
    "/pets" : {
      "get" : {
        "security" : [ {
          "api_key" : [ ]
        } ],
        "x-amazon-apigateway-integration" : {
          "httpMethod" : "GET",
          "uri" : "http://petstore-demo-endpoint.execute-api.com/petstore/pets/",
          "passthroughBehavior" : "when_no_match",
          "type" : "http_proxy"
        }
      },
      "post" : {
        "security" : [ {
          "api_key" : [ ]
        } ],
        "x-amazon-apigateway-integration" : {
          "httpMethod" : "GET",
          "uri" : "http://petstore-demo-endpoint.execute-api.com/petstore/pets/",
          "passthroughBehavior" : "when_no_match",
          "type" : "http_proxy"
        }
      }
    }
  },
  "components" : {
    "securitySchemes" : {
      "api_key" : {
        "type" : "apiKey",
        "name" : "x-api-key",
        "in" : "header"
      }
    }
  }
}
```

------