本例没有实现回调本身（只是一行代码），只有文档部分。

/// tip | 提示

实际的回调只是 HTTP 请求。

实现回调时，要使用 <a href="https://www.encode.io/httpx/" class="external-link" target="_blank">HTTPX</a> 或 <a href="https://requests.readthedocs.io/" class="external-link" target="_blank">Requests</a>。

///

## 编写回调文档代码

应用不执行这部分代码，只是用它来*记录 外部 API* 。

但，您已经知道用 **FastAPI** 创建自动 API 文档有多简单了。

我们要使用与存档*外部 API* 相同的知识……通过创建外部 API 要实现的*路径操作*（您的 API 要调用的）。

    /** The request being built. */
    protected Req request;

    /**
     * Constructor for RequestBuilder.
     * @param client The OpenSearch client.
     * @param request The request instance.
     */
    public RequestBuilder(final Client client, final Req request) {
        this.client = client;
        this.request = request;
    }

    /**
     * Executes the request.

# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository#creating-issue-forms
# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-githubs-form-schema
name: Bugs
description: The go command, standard library, or anything else
title: "import/path: issue title"

body:
  - type: markdown
    attributes:

            echo "changes=true" >> $GITHUB_OUTPUT
          else
            echo "changes=false" >> $GITHUB_OUTPUT
          fi
      - name: Create Pull Request
        if: steps.check-changes.outputs.changes == 'true'
        uses: peter-evans/create-pull-request@v8
        with:
          commit-message: Update test buckets
          branch: devprod/update-test-buckets
          branch-suffix: timestamp

			Claims:          cred.Claims,
		}) {
			// Request is allowed return the appropriate access key.
			return ErrNone
		}
	}

	return ErrAccessDenied
}

// Check request auth type verifies the incoming http request
//   - validates the request signature
//   - validates the policy action if anonymous tests bucket policies if any,
//     for authenticated requests validates IAM policies.
//

```java
OkHttpClient client = new OkHttpClient();

String run(String url) throws IOException {
  Request request = new Request.Builder()
      .url(url)
      .build();

  try (Response response = client.newCall(request).execute()) {
    return response.body().string();
  }
}
```


Post to a Server
----------------

This program posts data to a service. [Full source][post_example].

from fastapi.websockets import WebSocket
from starlette.exceptions import HTTPException
from starlette.requests import Request
from starlette.responses import JSONResponse, Response
from starlette.status import WS_1008_POLICY_VIOLATION


async def http_exception_handler(request: Request, exc: HTTPException) -> Response:
    headers = getattr(exc, "headers", None)
    if not is_body_allowed_for_status_code(exc.status_code):

          ./gradlew performance:writePerformanceTimes -Porg.gradle.performance.db.url=${{ env.PERFORMANCE_DB_URL }} -Porg.gradle.performance.db.username=${{ env.PERFORMANCE_DB_USERNAME }}
      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v8
        with:
          commit-message: Update performance test durations
          branch: bot-update-performance-test-durations
          branch-suffix: timestamp
          delete-branch: true

 *
 * <p>Parameters:
 * <ul>
 * <li>ENCODING - The character encoding to use for request parameters.</li>
 * <li>TOKEN_URL - The URL to request the token from.</li>
 * <li>TOKEN_PATTERN - The regex pattern to extract the token from the response.</li>
 * <li>TOKEN_NAME - The name of the token parameter.</li>
 * <li>TOKEN_METHOD - The HTTP method to use for the token request (GET or POST).</li>

import java.util.HashMap;
import java.util.Map;

import org.lastaflute.web.validation.Required;

import jakarta.validation.constraints.Size;

/**
 * Form class for handling "go" requests that redirect users to specific documents
 * or search results. This form captures the necessary parameters for document
 * access tracking and error page fallback information.
 *
 */
public class GoForm {

    /**