# Header 参数

定义 `Header` 参数的方式与定义 `Query`、`Path`、`Cookie` 参数相同。

## 导入 `Header`

首先，导入 `Header`：

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[3] *}

## 声明 `Header` 参数

然后，使用和 `Path`、`Query`、`Cookie` 一样的结构定义 header 参数。

第一个值是默认值，还可以传递所有验证参数或注释参数：

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[9] *}

/// note | 技术细节

`Header` 是 `Path`、`Query`、`Cookie` 的**兄弟类**，都继承自共用的 `Param` 类。

            .flatMap(
                path ->
                    Stream.<Construction<BiMap<Object, Object>>>of(
                        keys ->
                            path.create(transform(keys, key -> immutableEntry(key, new Object()))),
                        keys ->
                            path.create(transform(keys, key -> immutableEntry(new Object(), key))),

        assertEquals("gcs", url.getProtocol());
    }

    /**
     * Test URL parsing with bucket and object path.
     */
    public void test_urlParsing_bucketAndObject() throws Exception {
        URL url = new URL("gcs://mybucket/path/to/object.txt");
        Handler handler = new Handler();
        URLConnection conn = handler.openConnection(url);

        super.setUp();

        Path tempDir = Files.createTempDirectory("smbdata");
        Path publicDir = tempDir.resolve("public");
        Files.createDirectory(publicDir);
        Path usersDir = tempDir.resolve("users");
        Files.createDirectory(usersDir);
        Path testuser1Dir = tempDir.resolve("testuser1");
        Files.createDirectory(testuser1Dir);
        Path testuser2Dir = tempDir.resolve("testuser2");

    # For local development
    # contributors_path = Path("../docs/en/data/contributors.yml")
    contributors_path = Path("./docs/en/data/contributors.yml")
    # translators_path = Path("../docs/en/data/translators.yml")
    translators_path = Path("./docs/en/data/translators.yml")
    # translation_reviewers_path = Path("../docs/en/data/translation_reviewers.yml")
    translation_reviewers_path = Path("./docs/en/data/translation_reviewers.yml")

FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.context.path=$FESS_CONTEXT_PATH"
FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.port=$FESS_PORT"
FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.webapp.path=$FESS_HOME/app"
FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.temp.path=$FESS_TEMP_PATH"
FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.log.name=$APP_NAME"
FESS_JAVA_OPTS="$FESS_JAVA_OPTS -Dfess.log.path=$FESS_LOG_PATH"

import biz.aQute.resolve.Bndrun
import java.io.File
import okio.FileSystem
import okio.Path
import okio.Path.Companion.toPath
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Tag
import org.junit.jupiter.api.Test

@Tag("Slow")
class OsgiTest {
  private lateinit var testResourceDir: Path
  private lateinit var workspaceDir: Path

  @BeforeEach
  fun setUp() {

   
   *Please let us know if this helps.*
   
windows_comment: >
   From the stack trace it looks like you are hitting windows path length limit.
      * Try to disable path length limit on Windows 10.
        * Refer [disable path length limit instructions guide.](https://mspoweruser.com/ntfs-260-character-windows-10/)
   

            continue
        lang = match.group(1)
        path = match.group(2)
        if path.endswith("index.md"):
            path = path.replace("index.md", "")
        else:
            path = path.replace(".md", "/")
        en_path = path
        if lang == "en":
            use_path = en_path
        else:
            use_path = f"{lang}/{path}"
        link = LinkData(

    VersionsMetadata(Artifact artifact, Date timestamp) {
        super(createRepositoryMetadata(artifact), (Path) null, timestamp);
        this.artifact = artifact;
    }

    VersionsMetadata(Artifact artifact, Path path, Date timestamp) {
        super(createRepositoryMetadata(artifact), path, timestamp);
        this.artifact = artifact;
    }

    private static Metadata createRepositoryMetadata(Artifact artifact) {