kkFileView对接svn服务完成文件在线预览功能

1.需求：

之前在公司内部搭建了svn服务器，给部门存放文档、视频，做成了一个文档服务器来用，随着视频文件太大，每次下载太慢

需要把文件在线打开查看

2.解决：

kkFileView

https://kkfileview.keking.cn/zh-cn/index.html

kkFileView为文件文档在线预览解决方案，该项目使用流行的spring boot搭建，易上手和部署，基本支持主流办公文档的在线预览，如doc,docx,xls,xlsx,ppt,pptx,pdf,txt,zip,rar,图片,视频,音频等等

我之前写过的svn部署文档 https://www.cnblogs.com/wang3680/p/dc92818c4cb50701dbc42eef5e8a2482.html

kkFileView无法适配svn服务，需要开发svn客户端完成svn服务器文件的checkout操作

3.改造kkFileView适配svn服务

我用的版本是4.0.0 GitHub地址 https://github.com/kekingcn/kkFileView

下载源码，导入到idea中

<dependency>
    <groupId>org.tmatesoft.svnkit</groupId>
    <artifactId>svnkit</artifactId>
    <version>1.9.3</version>
</dependency>

新增SVNUtils.java 在 package cn.keking.utils;

  1 package cn.keking.utils;
  2 
  3 import org.slf4j.Logger;
  4 import org.slf4j.LoggerFactory;
  5 import org.tmatesoft.svn.core.*;
  6 import org.tmatesoft.svn.core.auth.ISVNAuthenticationManager;
  7 import org.tmatesoft.svn.core.internal.io.dav.DAVRepositoryFactory;
  8 import org.tmatesoft.svn.core.internal.io.fs.FSRepositoryFactory;
  9 import org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryFactoryImpl;
 10 import org.tmatesoft.svn.core.internal.wc.DefaultSVNOptions;
 11 import org.tmatesoft.svn.core.io.SVNRepository;
 12 import org.tmatesoft.svn.core.wc.*;
 13 
 14 import java.io.File;
 15 import java.io.FileOutputStream;
 16 import java.io.IOException;
 17 import java.io.OutputStream;
 18 
 19 /**
 20  * @program: filepreview
 21  * @ClassName SVNUtils
 22  * @description: svn下的https文件下载
 23  * @author: wangshaoshuai
 24  * @create: 2022/3/14 16:34
 25  */
 26 public class SVNUtils {
 27     private final static Logger logger = LoggerFactory.getLogger(SVNUtils.class);
 28 
 29     private String url;
 30     private String username;
 31     private String password;
 32     private SVNRepository repository;
 33 
 34     public SVNUtils(String url, String username, String password) {
 35         super();
 36         this.url = url;
 37         this.username = username;
 38         this.password = password;
 39         initialize();
 40     }
 41 
 42     /**
 43      * 初始化操作
 44      *
 45      * @throws SVNException
 46      */
 47     private void initialize() {
 48         FSRepositoryFactory.setup();
 49         DAVRepositoryFactory.setup();
 50         SVNRepositoryFactoryImpl.setup();
 51         try {
 52             repository = SVNRepositoryFactoryImpl.create(SVNURL.parseURIEncoded(this.url));
 53             ISVNAuthenticationManager authManager = SVNWCUtil.createDefaultAuthenticationManager(this.username, this.password);
 54             repository.setAuthenticationManager(authManager);
 55         } catch (SVNException e) {
 56             e.printStackTrace();
 57         }
 58     }
 59 
 60     /**
 61      * 从SVN服务器获取最新版本的文件
 62      *
 63      * @param filePath 相对于仓库根目录的路径
 64      * @return 返回checkout文件的版本号
 65      * @throws Exception 可以自定义Exception
 66      */
 67     public long getFileFromSVN(String filePath, String outFileName) {
 68         return getFileFromSVN(filePath, outFileName, 0);
 69     }
 70 
 71     /**
 72      * 从SVN服务器获取文件
 73      *
 74      * @param filePath 相对于仓库根目录的路径
 75      * @param version  要checkout的版本号，当传入的版本号为0时，默认获取最新版本
 76      * @return 返回checkout文件的版本号
 77      * @throws Exception 可以自定义Exception
 78      */
 79     public long getFileFromSVN(String filePath, String outFileName, long version) {
 80         SVNNodeKind node = null;
 81         try {
 82             if (version == 0) {
 83                 version = repository.getLatestRevision();
 84             }
 85 //            node = repository.checkPath(filePath, version);
 86         } catch (SVNException e) {
 87             logger.error("SVN检测不到该文件:" + filePath, e);
 88         }
 89 //        if (node != SVNNodeKind.FILE) {
 90 //            logger.error(node.toString() + "不是文件");
 91 //        }
 92         SVNProperties properties = new SVNProperties();
 93         try {
 94             OutputStream outputStream = new FileOutputStream(outFileName);
 95             repository.getFile(filePath, version, properties, outputStream);
 96             outputStream.close();
 97         } catch (SVNException e) {
 98             logger.error("获取SVN服务器中的" + filePath + "文件失败", e);
 99         } catch (IOException e) {
100             logger.error("SVN check out file faild.", e);
101         }
102         return Long.parseLong(properties.getStringValue("svn:entry:revision"));
103     }
104 }

View Code

修改DownloadUtils.java 具体位置为package cn.keking.utils;

  1 package cn.keking.utils;
  2 
  3 import cn.keking.config.ConfigConstants;
  4 import cn.keking.model.FileAttribute;
  5 import cn.keking.model.ReturnResponse;
  6 import io.mola.galimatias.GalimatiasParseException;
  7 import org.apache.commons.io.FileUtils;
  8 import org.slf4j.Logger;
  9 import org.slf4j.LoggerFactory;
 10 
 11 import java.io.*;
 12 import java.net.*;
 13 import java.util.UUID;
 14 
 15 import static cn.keking.utils.KkFileUtils.isFtpUrl;
 16 import static cn.keking.utils.KkFileUtils.isHttpUrl;
 17 
 18 /**
 19  * @author yudian-it
 20  */
 21 public class DownloadUtils {
 22 
 23     private final static Logger logger = LoggerFactory.getLogger(DownloadUtils.class);
 24     private static final String fileDir = ConfigConstants.getFileDir();
 25     private static final String URL_PARAM_FTP_USERNAME = "ftp.username";
 26     private static final String URL_PARAM_FTP_PASSWORD = "ftp.password";
 27     private static final String URL_PARAM_FTP_CONTROL_ENCODING = "ftp.control.encoding";
 28 
 29     private static final String URL_PARAM_URL_TYPE = "url.type";
 30     private static final String URL_PARAM_SVN_USERNAME = "svn.username";
 31     private static final String URL_PARAM_SVN_PASSWORD = "svn.password";
 32 
 33     /**
 34      * @param fileAttribute fileAttribute
 35      * @param fileName      文件名
 36      * @return 本地文件绝对路径
 37      */
 38     public static ReturnResponse<String> downLoad(FileAttribute fileAttribute, String fileName) {
 39         String urlStr = fileAttribute.getUrl();
 40         ReturnResponse<String> response = new ReturnResponse<>(0, "下载成功!!!", "");
 41         String realPath = DownloadUtils.getRelFilePath(fileName, fileAttribute);
 42         try {
 43             URL url = WebUtils.normalizedURL(urlStr);
 44             if (isHttpUrl(url)) {
 45                 File realFile = new File(realPath);
 46                 String url_type = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_URL_TYPE);
 47                 if(url_type.equalsIgnoreCase("svn")){//svn的服务的话下载方式不一样
 48                     String svn_username = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_SVN_USERNAME);
 49                     String svn_password = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_SVN_PASSWORD);
 50                     String svn_folder = urlStr.substring(0,urlStr.lastIndexOf("/"));
 51                     String file_name = urlStr.substring(urlStr.lastIndexOf("/")+1,urlStr.indexOf("?"));
 52                     SVNUtils svnUtils = new SVNUtils(svn_folder,svn_username,svn_password);
 53                     svnUtils.getFileFromSVN(file_name,realPath);
 54                 }else{
 55                     FileUtils.copyURLToFile(url,realFile);
 56                 }
 57             } else if (isFtpUrl(url)) {
 58                 String ftpUsername = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_USERNAME);
 59                 String ftpPassword = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_PASSWORD);
 60                 String ftpControlEncoding = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_CONTROL_ENCODING);
 61                 FtpUtils.download(fileAttribute.getUrl(), realPath, ftpUsername, ftpPassword, ftpControlEncoding);
 62             } else {
 63                 response.setCode(1);
 64                 response.setMsg("url不能识别url" + urlStr);
 65             }
 66             response.setContent(realPath);
 67             response.setMsg(fileName);
 68             return response;
 69         } catch (IOException | GalimatiasParseException e) {
 70             logger.error("文件下载失败，url：{}", urlStr, e);
 71             response.setCode(1);
 72             response.setContent(null);
 73             if (e instanceof FileNotFoundException) {
 74                 response.setMsg("文件不存在!!!");
 75             } else {
 76                 response.setMsg(e.getMessage());
 77             }
 78             return response;
 79         }
 80     }
 81 
 82 
 83     /**
 84      * 获取真实文件绝对路径
 85      *
 86      * @param fileName 文件名
 87      * @return 文件路径
 88      */
 89     private static String getRelFilePath(String fileName, FileAttribute fileAttribute) {
 90         String type = fileAttribute.getSuffix();
 91         if (null == fileName) {
 92             UUID uuid = UUID.randomUUID();
 93             fileName = uuid + "." + type;
 94         } else { // 文件后缀不一致时，以type为准(针对simText【将类txt文件转为txt】)
 95             fileName = fileName.replace(fileName.substring(fileName.lastIndexOf(".") + 1), type);
 96         }
 97         String realPath = fileDir + fileName;
 98         File dirFile = new File(fileDir);
 99         if (!dirFile.exists() && !dirFile.mkdirs()) {
100             logger.error("创建目录【{}】失败,可能是权限不够，请检查", fileDir);
101         }
102         return realPath;
103     }
104 
105 }

View Code

 1 public static ReturnResponse<String> downLoad(FileAttribute fileAttribute, String fileName) {
 2         String urlStr = fileAttribute.getUrl();
 3         ReturnResponse<String> response = new ReturnResponse<>(0, "下载成功!!!", "");
 4         String realPath = DownloadUtils.getRelFilePath(fileName, fileAttribute);
 5         try {
 6             URL url = WebUtils.normalizedURL(urlStr);
 7             if (isHttpUrl(url)) {
 8                 File realFile = new File(realPath);
 9                 String url_type = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_URL_TYPE);
10                 if(url_type.equalsIgnoreCase("svn")){//svn的服务的话下载方式不一样
11                     String svn_username = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_SVN_USERNAME);
12                     String svn_password = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_SVN_PASSWORD);
13                     String svn_folder = urlStr.substring(0,urlStr.lastIndexOf("/"));
14                     String file_name = urlStr.substring(urlStr.lastIndexOf("/")+1,urlStr.indexOf("?"));
15                     SVNUtils svnUtils = new SVNUtils(svn_folder,svn_username,svn_password);
16                     svnUtils.getFileFromSVN(file_name,realPath);
17                 }else{
18                     FileUtils.copyURLToFile(url,realFile);
19                 }
20             } else if (isFtpUrl(url)) {
21                 String ftpUsername = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_USERNAME);
22                 String ftpPassword = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_PASSWORD);
23                 String ftpControlEncoding = WebUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_CONTROL_ENCODING);
24                 FtpUtils.download(fileAttribute.getUrl(), realPath, ftpUsername, ftpPassword, ftpControlEncoding);
25             } else {
26                 response.setCode(1);
27                 response.setMsg("url不能识别url" + urlStr);
28             }
29             response.setContent(realPath);
30             response.setMsg(fileName);
31             return response;
32         } catch (IOException | GalimatiasParseException e) {
33             logger.error("文件下载失败，url：{}", urlStr, e);
34             response.setCode(1);
35             response.setContent(null);
36             if (e instanceof FileNotFoundException) {
37                 response.setMsg("文件不存在!!!");
38             } else {
39                 response.setMsg(e.getMessage());
40             }
41             return response;
42         }
43     }

主要是修改这段代码，增加svn类型的判断和工具类的使用

使用方法如下：a.html

<!DOCTYPE html>

<html lang="en">
<head>
    <title>kkFileView演示首页</title>
</head>

<body>
<div>

</div>  
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/js-base64@3.6.0/base64.min.js"></script>
<script>
   var url = 'https://127.0.0.1/svn/业务学习资料/资料整理文档/JAVA学习/JAVA开发工具idea的使用01-王少帅.mp4';
   var pre_url = url + '?url.type=svn&svn.username=wangshaoshuai&svn.password=123456';
   window.open('http://127.0.0.1:8012/onlinePreview?url='+encodeURIComponent(Base64.encode(pre_url)));
</script> 
</body>
</html>

1    var url = 'https://127.0.0.1/svn/业务学习资料/资料整理文档/JAVA学习/JAVA开发工具idea的使用01-王少帅.mp4';
2    var pre_url = url + '?url.type=svn&svn.username=wangshaoshuai&svn.password=123456';
3    window.open('http://127.0.0.1:8012/onlinePreview?url='+encodeURIComponent(Base64.encode(pre_url)));

主要是这段代码，即可加入到svn列表显示的服务里面会弹窗跳转一个新的预览页面