# 使用 Base64 表示位元組的 JSON { #json-with-bytes-as-base64 }

如果你的應用需要收發 JSON 資料，但其中需要包含二進位資料，你可以將它以 base64 編碼。

## Base64 與檔案 { #base64-vs-files }

請先考慮是否能用 [請求檔案](../tutorial/request-files.md) 來上傳二進位資料，並用 [自訂回應 - FileResponse](./custom-response.md#fileresponse--fileresponse-) 來傳送二進位資料，而不是把它們編碼進 JSON。

JSON 只能包含 UTF-8 編碼的字串，因此無法直接包含原始位元組。

Base64 可以把二進位資料編碼成字串，但為此會使用比原始二進位資料更多的字元，因此通常比直接使用檔案來得沒那麼有效率。

只有在確實必須把二進位資料包含在 JSON 裡，且無法改用檔案時，才使用 base64。

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and

        }
        FileCollection fileCollection = additionalConfig == null
            ? projectLayout.files(coreFileTree, xpackFileTree)
            : projectLayout.files(coreFileTree, xpackFileTree, additionalConfigToFileTree.apply(additionalConfig));

        // copy tests only if explicitly requested

import org.gradle.api.tasks.CacheableTask
import org.gradle.api.tasks.TaskAction
import java.io.File


/**
 * This [Task][org.gradle.api.Task] checks that the contents of a given accepted API changes files
 * are present in alphabetical order (by type, then member), and throws an exception and reports
 * any changes that are not.
 */
@CacheableTask

          github-token: ${{ secrets.GITHUB_TOKEN }}
          run-id: ${{ github.event.workflow_run.id }}
      - name: Deploy to Cloudflare Pages
        # hashFiles returns an empty string if there are no files
        if: hashFiles('./site/*')
        id: deploy
        env:
          PROJECT_NAME: fastapitiangolo

		return Info{}, err
	}
	reservedBlocks := uint64(s.F_bfree) - uint64(s.F_bavail)
	info = Info{
		Total:  uint64(s.F_bsize) * (uint64(s.F_blocks) - reservedBlocks),
		Free:   uint64(s.F_bsize) * uint64(s.F_bavail),
		Files:  uint64(s.F_files),
		Ffree:  uint64(s.F_ffree),
		FSType: getFSType(s.F_fstypename[:]),
	}
	if info.Free > info.Total {

import com.google.common.base.Preconditions;
import java.io.File;
import java.io.FilenameFilter;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

/**
 * File name filter that only accepts files matching a regular expression. This class is thread-safe
 * and immutable.
 *
 * @author Apple Chow
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.smb;

/**
 * File filter implementation for DOS-style wildcards and attributes.
 * Supports filtering files based on DOS wildcards and file attributes.
 *
 */
public class DosFileFilter implements SmbFileFilter {

    /**
     * The wildcard pattern for filtering file names.
     */
    protected String wildcard;

 * including tracking information for optimistic locking and audit trails.
 * Data configs define how to crawl and extract data from databases, CSV files, and other data sources.
 *
 */
public class EditForm extends CreateForm {

    /**
     * Creates a new EditForm instance.
     */
    public EditForm() {
        super();
    }

    /**

Flags:

	-D name[=value]
		Predefine symbol name with an optional simple value.
		Can be repeated to define multiple symbols.
	-I dir1 -I dir2
		Search for #include files in dir1, dir2, etc,
		after consulting $GOROOT/pkg/$GOOS_$GOARCH.
	-S
		Print assembly and machine code.
	-V
		Print assembler version and exit.
	-debug
		Dump instructions as they are parsed.
	-dynlink