Swagger UI erledigt das hinter den Kulissen für Sie, benötigt aber diesen „Umleitungs“-Helfer.

///

### Eine *Pfadoperation* erstellen, um es zu testen

Um nun testen zu können, ob alles funktioniert, erstellen Sie eine *Pfadoperation*:

```Python hl_lines="36-38"
{!../../docs_src/custom_docs_ui/tutorial001.py!}
```

### Es ausprobieren

from fastapi import FastAPI, File, UploadFile

app = FastAPI()


@app.post("/files/")
async def create_file(file: Annotated[bytes | None, File()] = None):
    if not file:
        return {"message": "No file sent"}
    else:
        return {"file_size": len(file)}


@app.post("/uploadfile/")
async def create_upload_file(file: UploadFile | None = None):
    if not file:

        def propertyDetailsSection = withCategories { content.section.find { it.title[0].text().trim() == 'Property details' } }
        def propertiesTable = withCategories { propertiesSection ? propertiesSection.table[0] : parse('<table/>')}
        def methodsSection = withCategories { content.section.find { it.title[0].text().trim() == 'Methods' } }

		},
		{
			name:              "specified CNI config file undetectable",
			chainedCNIPlugin:  true,
			specifiedConfName: "undetectable.file",
			expectedConfName:  "undetectable.file",
			goldenConfName:    "list.conflist.golden",
			existingConfFiles: map[string]string{"bridge.conf": "bridge.conf", "list.conflist": "undetectable.file"},
		},
		{

                Change("org.gradle.api.file.SourceDirectorySet", "Method org.gradle.api.file.SourceDirectorySet.getOutputDir()"),
                Change("org.gradle.api.file.SourceDirectorySet", "Method org.gradle.api.file.SourceDirectorySet.setOutputDir(java.io.File)"),
                Change("org.gradle.api.tasks.testing.Test", "Method org.gradle.api.tasks.testing.Test.setOutputDir(java.io.File)"),

import gradlebuild.basics.util.KotlinSourceParser
import java.io.File


internal
sealed class ApiSourceFile {

    internal
    abstract val currentFile: File

    internal
    abstract val currentSourceRoot: File

    data class Java internal constructor(

        override val currentFile: File,

        override val currentSourceRoot: File

    ) : ApiSourceFile()

from fastapi import FastAPI, File, UploadFile

app = FastAPI()


@app.post("/files/")
async def create_file(file: Annotated[bytes, File(description="A file read as bytes")]):
    return {"file_size": len(file)}


@app.post("/uploadfile/")
async def create_upload_file(
    file: Annotated[UploadFile, File(description="A file read as UploadFile")],
):

    public String alignToBaseDirectory(String path, File basedir) {
        if (basedir == null) {
            return path;
        }

        if (path == null) {
            return null;
        }

        String s = stripBasedirToken(path);

        File file = new File(s);
        if (file.isAbsolute()) {
            // path was already absolute, just normalize file separator and we're done
            s = file.getPath();

        final URL url = new File("/Program File").toURI().toURL();
        assertEquals("file:" + getRoot() + "Program File", ResourceUtil.toExternalForm(url));
    }

    /**
     * @throws Exception
     */
    public void testGetFileName() throws Exception {
        URL url = new File("/Program File").toURI().toURL();
        assertEquals(getRoot() + "Program File", ResourceUtil.getFileName(url));

    val result = Buffer()
    while (!buffer.exhausted()) {
      val box = Buffer()
      box.write(buffer, 1)
      result.write(box.copy(), 1)
    }
    return result
  }

  tailrec fun File.isDescendentOf(directory: File): Boolean {
    val parentFile = parentFile ?: return false
    if (parentFile == directory) return true
    return parentFile.isDescendentOf(directory)
  }

  /**