If your app needs to receive and send JSON data, but you need to include binary data in it, you can encode it as base64.

## Base64 vs Files { #base64-vs-files }

Consider first if you can use [Request Files](../tutorial/request-files.md) for uploading binary data and [Custom Response - FileResponse](./custom-response.md#fileresponse--fileresponse-) for sending binary data, instead of encoding it in JSON.

                    final File[] files = file.listFiles();
                    if (files != null) {
                        if (logger.isDebugEnabled()) {
                            logger.debug("Found {} child entries in directory: directory={}", files.length, file.getAbsolutePath());
                        }
                        for (final File f : files) {

# Static Files - `StaticFiles`

You can use the `StaticFiles` class to serve static files, like JavaScript, CSS, images, etc.

Read more about it in the [FastAPI docs for Static Files](https://fastapi.tiangolo.com/tutorial/static-files/).

You can import it directly from `fastapi.staticfiles`:

```python
from fastapi.staticfiles import StaticFiles
```

/**
 * Static utilities for use with {@link Path} instances, intended to complement {@link Files}.
 *
 * <p>Many methods provided by Guava's {@code Files} class for {@link java.io.File} instances are
 * now available via the JDK's {@link java.nio.file.Files} class for {@code Path} - check the JDK's
 * class if a sibling method from {@code Files} appears to be missing from this class.
 *
 * @since 33.4.0 (but since 21.0 in the JRE flavor)

/**
 * Represents a source for loading Maven Project Object Model (POM) files. This interface
 * extends the basic {@link Source} interface with specific functionality for handling
 * Maven POM files and resolving related project POMs.
 *
 * <p>The interface provides two types of sources:</p>
 * <ul>
 *   <li>Build sources: Used for POM files of projects being built by Maven in the filesystem.

    inputs.files(acceptedViolationsFiles)
    inputs.property("baseline.version", compatibilityBaselineVersion)
    inputs.property("currentVersion", baseVersion)
    def apiSourceFolders = configurations.currentSources.incoming.artifactView { lenient(true) }.files
    inputs.files("apiSourceFolders", apiSourceFolders)
    inputs.files(currentClasspath)
    inputs.files(extractGradleApiInfo)

import javax.inject.Inject;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.function.Function;
import java.util.stream.Collectors;

import static org.elasticsearch.gradle.util.GradleUtils.getProjectPathFromTask;

/**
 * Copies the files needed for the Rest YAML specs to the current projects test resources output directory.

        String result;
        ModelSource src = sourcePathProvider.get();
        if (src == null) {
            Files.deleteIfExists(target);
            result = null;
        } else if (!Files.exists(src.getPath())) {
            Files.deleteIfExists(target);
            result = "";
        } else {
            String current = ChecksumAlgorithmHelper.calculate(

@pytest.mark.parametrize(
    "path",
    [
        "/optional-bytes",
        "/optional-uploadfile",
    ],
)
def test_optional(path: str):
    client = TestClient(app)
    response = client.post(path, files=[("p", b"hello")])
    assert response.status_code == 200
    assert response.json() == {"file_size": 5}


# =====================================================================================
# Alias

### Auto-Generated Files

Never edit these files manually (marked with `@author FreeGen`):
- `FessLabels.java`
- `FessMessages.java`

Always regenerate them using `mvn dbflute:freegen`

## Complete Example: Adding Swedish (sv)

```bash
# 1. Navigate to resources directory
cd src/main/resources

# 2. Copy base files
cp fess_label_en.properties fess_label_sv.properties