Files
file-online-preview/server/src/main/java/cn/keking/utils/DownloadUtils.java
yl-yue acffcbfe98 !51 实现预览加密的(受密码保护)office文件
* 1. 修复getCorsFile接口高危安全漏洞
* 1. 优化密码错误提示(“密码错误,请重新输入密码。”)
* 1. 修复PPT重复预览bug,此bug导致ppt每次预览会执行两次转换(请求两次onlinePreview接口),在大文件尤其耗时(双倍时…
* 1. 【加密office预览】优化受密码保护的office文件检查逻辑,提升旧文件格式的兼容性
* 1. 【加密office预览】优化office文件是否受密码保护判断逻辑,避免兼容性误判
* 1. 【加密office预览】优化重新输入密码提示。
* 1. 【加密office预览】优化当密码输入错误后,不是抛出异常,而是提示用户重新输入
* 1. 优化prompt提示框的输入密码提示样式
* 1. 实现基于userToken缓存加密文件,没有userToken的加密文件不缓存
* 1. 优化docker构建方案,使用分层构建方式,采用层级缓存解决构建慢发布慢等问题。从原本5分钟左右缩短至几秒
* 1. 加密文件暂时不缓存(后续基于用户token实现,基于用户缓存)
* 1. 优化office文件下载逻辑,跳过重复下载(大量节约带宽与磁盘空间)。
* 1. 修复预览不同类型的加密office文件bug
* 实现预览加密的(受密码保护)office文件
2022-07-21 03:19:46 +00:00

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package cn.keking.utils;
import cn.keking.config.ConfigConstants;
import cn.keking.model.FileAttribute;
import cn.keking.model.ReturnResponse;
import io.mola.galimatias.GalimatiasParseException;
import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.net.*;
import java.util.UUID;
import static cn.keking.utils.KkFileUtils.isFtpUrl;
import static cn.keking.utils.KkFileUtils.isHttpUrl;
/**
* @author yudian-it
*/
public class DownloadUtils {
private final static Logger logger = LoggerFactory.getLogger(DownloadUtils.class);
private static final String fileDir = ConfigConstants.getFileDir();
private static final String URL_PARAM_FTP_USERNAME = "ftp.username";
private static final String URL_PARAM_FTP_PASSWORD = "ftp.password";
private static final String URL_PARAM_FTP_CONTROL_ENCODING = "ftp.control.encoding";
/**
* @param fileAttribute fileAttribute
* @param fileName 文件名
* @return 本地文件绝对路径
*/
public static ReturnResponse<String> downLoad(FileAttribute fileAttribute, String fileName) {
String urlStr = fileAttribute.getUrl().replaceAll("\\+", "%20");
ReturnResponse<String> response = new ReturnResponse<>(0, "下载成功!!!", "");
String realPath = DownloadUtils.getRelFilePath(fileName, fileAttribute);
try {
URL url = WebUtils.normalizedURL(urlStr);
if (!fileAttribute.getSkipDownLoad()) {
if (isHttpUrl(url)) {
File realFile = new File(realPath);
FileUtils.copyURLToFile(url, realFile);
} else if (isFtpUrl(url)) {
String ftpUsername = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_USERNAME);
String ftpPassword = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_PASSWORD);
String ftpControlEncoding = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_CONTROL_ENCODING);
FtpUtils.download(fileAttribute.getUrl(), realPath, ftpUsername, ftpPassword, ftpControlEncoding);
} else {
response.setCode(1);
response.setMsg("url不能识别url" + urlStr);
}
}
response.setContent(realPath);
response.setMsg(fileName);
return response;
} catch (IOException | GalimatiasParseException e) {
logger.error("文件下载失败url{}", urlStr, e);
response.setCode(1);
response.setContent(null);
if (e instanceof FileNotFoundException) {
response.setMsg("文件不存在!!!");
} else {
response.setMsg(e.getMessage());
}
return response;
}
}
/**
* 获取真实文件绝对路径
*
* @param fileName 文件名
* @return 文件路径
*/
private static String getRelFilePath(String fileName, FileAttribute fileAttribute) {
String type = fileAttribute.getSuffix();
if (null == fileName) {
UUID uuid = UUID.randomUUID();
fileName = uuid + "." + type;
} else { // 文件后缀不一致时以type为准(针对simText【将类txt文件转为txt】)
fileName = fileName.replace(fileName.substring(fileName.lastIndexOf(".") + 1), type);
}
String realPath = fileDir + fileName;
File dirFile = new File(fileDir);
if (!dirFile.exists() && !dirFile.mkdirs()) {
logger.error("创建目录【{}】失败,可能是权限不够,请检查", fileDir);
}
// 文件已在本地存在,跳过文件下载
File realFile = new File(realPath);
if (realFile.exists()) {
fileAttribute.setSkipDownLoad(true);
}
return realPath;
}
}