| | |
| | | package com.ruoyi.common.utils.file;
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| | |
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| | | import java.io.File;
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| | | import java.io.FileInputStream;
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| | | import java.io.FileNotFoundException;
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| | | import java.io.FileOutputStream;
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| | | import java.io.IOException;
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| | | import java.io.OutputStream;
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| | | import java.io.UnsupportedEncodingException;
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| | | import java.net.URLEncoder;
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| | | import java.nio.charset.StandardCharsets;
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| | | import javax.servlet.http.HttpServletRequest;
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| | | import javax.servlet.http.HttpServletResponse;
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| | | import org.apache.commons.io.IOUtils;
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| | | import org.apache.commons.lang3.ArrayUtils;
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| | | import com.ruoyi.common.config.RuoYiConfig;
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| | | import com.ruoyi.common.utils.DateUtils;
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| | | import com.ruoyi.common.utils.StringUtils;
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| | | import com.ruoyi.common.utils.uuid.IdUtils;
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| | |
|
| | | /**
|
| | | * 文件处理工具类
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| | | * |
| | | * @author ruoyi
|
| | | */
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| | | public class FileUtils
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| | | {
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| | | public static String FILENAME_PATTERN = "[a-zA-Z0-9_\\-\\|\\.\\u4e00-\\u9fa5]+";
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| | |
|
| | | /**
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| | | * 输出指定文件的byte数组
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| | | * |
| | | * @param filePath 文件路径
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| | | * @param os 输出流
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| | | * @return
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| | | */
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| | | public static void writeBytes(String filePath, OutputStream os) throws IOException
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| | | {
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| | | FileInputStream fis = null;
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| | | try
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| | | {
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| | | File file = new File(filePath);
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| | | if (!file.exists())
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| | | {
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| | | throw new FileNotFoundException(filePath);
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| | | }
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| | | fis = new FileInputStream(file);
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| | | byte[] b = new byte[1024];
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| | | int length;
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| | | while ((length = fis.read(b)) > 0)
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| | | {
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| | | os.write(b, 0, length);
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| | | }
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| | | }
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| | | catch (IOException e)
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| | | {
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| | | throw e;
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| | | }
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| | | finally
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| | | {
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| | | IOUtils.close(os);
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| | | IOUtils.close(fis);
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| | | }
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| | | }
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| | |
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| | | /**
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| | | * 写数据到文件中
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| | | *
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| | | * @param data 数据
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| | | * @return 目标文件
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| | | * @throws IOException IO异常
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| | | */
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| | | public static String writeImportBytes(byte[] data) throws IOException
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| | | {
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| | | return writeBytes(data, RuoYiConfig.getImportPath());
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| | | }
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| | |
|
| | | /**
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| | | * 写数据到文件中
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| | | *
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| | | * @param data 数据
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| | | * @param uploadDir 目标文件
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| | | * @return 目标文件
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| | | * @throws IOException IO异常
|
| | | */
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| | | public static String writeBytes(byte[] data, String uploadDir) throws IOException
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| | | {
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| | | FileOutputStream fos = null;
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| | | String pathName = "";
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| | | try
|
| | | {
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| | | String extension = getFileExtendName(data);
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| | | pathName = DateUtils.datePath() + "/" + IdUtils.fastUUID() + "." + extension;
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| | | File file = FileUploadUtils.getAbsoluteFile(uploadDir, pathName);
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| | | fos = new FileOutputStream(file);
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| | | fos.write(data);
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| | | }
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| | | finally
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| | | {
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| | | IOUtils.close(fos);
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| | | }
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| | | return FileUploadUtils.getPathFileName(uploadDir, pathName);
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| | | }
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| | |
|
| | | /**
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| | | * 删除文件
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| | | * |
| | | * @param filePath 文件
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| | | * @return
|
| | | */
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| | | public static boolean deleteFile(String filePath)
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| | | {
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| | | boolean flag = false;
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| | | File file = new File(filePath);
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| | | // 路径为文件且不为空则进行删除
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| | | if (file.isFile() && file.exists())
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| | | {
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| | | file.delete();
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| | | flag = true;
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| | | }
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| | | return flag;
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| | | }
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| | |
|
| | | /**
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| | | * 文件名称验证
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| | | * |
| | | * @param filename 文件名称
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| | | * @return true 正常 false 非法
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| | | */
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| | | public static boolean isValidFilename(String filename)
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| | | {
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| | | return filename.matches(FILENAME_PATTERN);
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| | | }
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| | |
|
| | | /**
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| | | * 检查文件是否可下载
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| | | * |
| | | * @param resource 需要下载的文件
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| | | * @return true 正常 false 非法
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| | | */
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| | | public static boolean checkAllowDownload(String resource)
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| | | {
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| | | // 禁止目录上跳级别
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| | | if (StringUtils.contains(resource, ".."))
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| | | {
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| | | return false;
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| | | }
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| | |
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| | | // 检查允许下载的文件规则
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| | | if (ArrayUtils.contains(MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION, FileTypeUtils.getFileType(resource)))
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| | | {
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| | | return true;
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| | | }
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| | |
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| | | // 不在允许下载的文件规则
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| | | return false;
|
| | | }
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| | |
|
| | | /**
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| | | * 下载文件名重新编码
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| | | * |
| | | * @param request 请求对象
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| | | * @param fileName 文件名
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| | | * @return 编码后的文件名
|
| | | */
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| | | public static String setFileDownloadHeader(HttpServletRequest request, String fileName) throws UnsupportedEncodingException
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| | | {
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| | | final String agent = request.getHeader("USER-AGENT");
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| | | String filename = fileName;
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| | | if (agent.contains("MSIE"))
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| | | {
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| | | // IE浏览器
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| | | filename = URLEncoder.encode(filename, "utf-8");
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| | | filename = filename.replace("+", " ");
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| | | }
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| | | else if (agent.contains("Firefox"))
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| | | {
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| | | // 火狐浏览器
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| | | filename = new String(fileName.getBytes(), "ISO8859-1");
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| | | }
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| | | else if (agent.contains("Chrome"))
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| | | {
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| | | // google浏览器
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| | | filename = URLEncoder.encode(filename, "utf-8");
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| | | }
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| | | else
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| | | {
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| | | // 其它浏览器
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| | | filename = URLEncoder.encode(filename, "utf-8");
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| | | }
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| | | return filename;
|
| | | }
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| | |
|
| | | /**
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| | | * 下载文件名重新编码
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| | | *
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| | | * @param response 响应对象
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| | | * @param realFileName 真实文件名
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| | | * @return
|
| | | */
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| | | public static void setAttachmentResponseHeader(HttpServletResponse response, String realFileName) throws UnsupportedEncodingException
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| | | {
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| | | String percentEncodedFileName = percentEncode(realFileName);
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| | |
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| | | StringBuilder contentDispositionValue = new StringBuilder();
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| | | contentDispositionValue.append("attachment; filename=")
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| | | .append(percentEncodedFileName)
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| | | .append(";")
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| | | .append("filename*=")
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| | | .append("utf-8''")
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| | | .append(percentEncodedFileName);
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| | |
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| | | response.setHeader("Content-disposition", contentDispositionValue.toString());
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| | | }
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| | |
|
| | | /**
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| | | * 百分号编码工具方法
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| | | *
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| | | * @param s 需要百分号编码的字符串
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| | | * @return 百分号编码后的字符串
|
| | | */
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| | | public static String percentEncode(String s) throws UnsupportedEncodingException
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| | | {
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| | | String encode = URLEncoder.encode(s, StandardCharsets.UTF_8.toString());
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| | | return encode.replaceAll("\\+", "%20");
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| | | }
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| | |
|
| | | /**
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| | | * 获取图像后缀
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| | | * |
| | | * @param photoByte 图像数据
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| | | * @return 后缀名
|
| | | */
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| | | public static String getFileExtendName(byte[] photoByte)
|
| | | {
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| | | String strFileExtendName = "jpg";
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| | | if ((photoByte[0] == 71) && (photoByte[1] == 73) && (photoByte[2] == 70) && (photoByte[3] == 56)
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| | | && ((photoByte[4] == 55) || (photoByte[4] == 57)) && (photoByte[5] == 97))
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| | | {
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| | | strFileExtendName = "gif";
|
| | | }
|
| | | else if ((photoByte[6] == 74) && (photoByte[7] == 70) && (photoByte[8] == 73) && (photoByte[9] == 70))
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| | | {
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| | | strFileExtendName = "jpg";
|
| | | }
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| | | else if ((photoByte[0] == 66) && (photoByte[1] == 77))
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| | | {
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| | | strFileExtendName = "bmp";
|
| | | }
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| | | else if ((photoByte[1] == 80) && (photoByte[2] == 78) && (photoByte[3] == 71))
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| | | {
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| | | strFileExtendName = "png";
|
| | | }
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| | | return strFileExtendName;
|
| | | }
|
| | | }
|
| | | package com.ruoyi.common.utils.file; |
| | | |
| | | import cn.hutool.core.io.FileUtil; |
| | | import lombok.AccessLevel; |
| | | import lombok.NoArgsConstructor; |
| | | |
| | | import jakarta.servlet.http.HttpServletResponse; |
| | | import java.io.UnsupportedEncodingException; |
| | | import java.net.URLEncoder; |
| | | import java.nio.charset.StandardCharsets; |
| | | |
| | | /** |
| | | * 文件处理工具类 |
| | | * |
| | | * @author Lion Li |
| | | */ |
| | | @NoArgsConstructor(access = AccessLevel.PRIVATE) |
| | | public class FileUtils extends FileUtil { |
| | | |
| | | /** |
| | | * 下载文件名重新编码 |
| | | * |
| | | * @param response 响应对象 |
| | | * @param realFileName 真实文件名 |
| | | */ |
| | | public static void setAttachmentResponseHeader(HttpServletResponse response, String realFileName) throws UnsupportedEncodingException { |
| | | String percentEncodedFileName = percentEncode(realFileName); |
| | | |
| | | StringBuilder contentDispositionValue = new StringBuilder(); |
| | | contentDispositionValue.append("attachment; filename=") |
| | | .append(percentEncodedFileName) |
| | | .append(";") |
| | | .append("filename*=") |
| | | .append("utf-8''") |
| | | .append(percentEncodedFileName); |
| | | |
| | | response.addHeader("Access-Control-Expose-Headers", "Content-Disposition,download-filename"); |
| | | response.setHeader("Content-disposition", contentDispositionValue.toString()); |
| | | response.setHeader("download-filename", percentEncodedFileName); |
| | | } |
| | | |
| | | /** |
| | | * 百分号编码工具方法 |
| | | * |
| | | * @param s 需要百分号编码的字符串 |
| | | * @return 百分号编码后的字符串 |
| | | */ |
| | | public static String percentEncode(String s) throws UnsupportedEncodingException { |
| | | String encode = URLEncoder.encode(s, StandardCharsets.UTF_8.toString()); |
| | | return encode.replaceAll("\\+", "%20"); |
| | | } |
| | | } |