新增markdown格式预览支持

Merge pull request !19 from zhangxiaoxiao/master

Dockerfile

@@ -9,7 +9,10 @@ RUN echo "deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe m
 	apt-get install -y tzdata && ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime &&\
 	apt-get install -y libxrender1 && apt-get install -y libxt6 && apt-get install -y libxext-dev && apt-get install -y libfreetype6-dev &&\
 	apt-get install -y wget && apt-get install -y ttf-mscorefonts-installer && apt-get install -y fontconfig &&\
-	cd /tmp &&\
+	apt-get install ttf-wqy-microhei &&\
+	apt-get install ttf-wqy-zenhei &&\
+	apt-get install xfonts-wqy &&\
+    cd /tmp &&\
 	wget https://kkfileview.keking.cn/server-jre-8u251-linux-x64.tar.gz &&\
 	wget https://kkfileview.keking.cn/Apache_OpenOffice_4.1.6_Linux_x86-64_install-deb_zh-CN.tar.gz -cO openoffice_deb.tar.gz &&\
 	tar -zxf /tmp/server-jre-8u251-linux-x64.tar.gz && mv /tmp/jdk1.8.0_251 /usr/local/ &&\

README.md

@@ -28,8 +28,9 @@
 ### 联系我们，加入组织
 > 我们会用心回答解决大家在项目使用中的问题，也请大家在提问前至少Google或baidu过，珍爱生命远离无效的交流沟通
 
-![输入图片说明](https://gitee.com/uploads/images/2017/1219/173717_934cb068_492218.png "屏幕截图.png")
-QQ群号：613025121
+![](./doc/KK开源技术交流2群群聊二维码.png) 
+
+QQ群号：~~613025121(已满)~~  2群：484680571
 
 ### 文档预览效果
 #### 1. 文本预览

jodconverter-web/src/main/config/freemarker_implicit.ftl

@@ -0,0 +1,14 @@
+[#ftl]
+[#-- @implicitly included --]
+[#-- @ftlvariable name="imgurls" type="String" --]
+[#-- @ftlvariable name="watermarkAngle" type="String" --]
+[#-- @ftlvariable name="watermarkHeight" type="String" --]
+[#-- @ftlvariable name="watermarkWidth" type="String" --]
+[#-- @ftlvariable name="watermarkAlpha" type="String" --]
+[#-- @ftlvariable name="watermarkColor" type="String" --]
+[#-- @ftlvariable name="watermarkFontsize" type="String" --]
+[#-- @ftlvariable name="watermarkFont" type="String" --]
+[#-- @ftlvariable name="watermarkYSpace" type="String" --]
+[#-- @ftlvariable name="watermarkXSpace" type="String" --]
+[#-- @ftlvariable name="watermarkTxt" type="String" --]
+[#-- @ftlvariable name="ordinaryUrl" type="String" --]

jodconverter-web/src/main/java/cn/keking/model/FileType.java

@@ -5,15 +5,17 @@ package cn.keking.model;
  * Content :文件类型，文本，office，压缩包等等
  */
 public enum FileType {
-    picture("pictureFilePreviewImpl"),
+    picture("picturefilepreviewimpl"),
     compress("compressFilePreviewImpl"),
     office("officeFilePreviewImpl"),
     simText("simTextFilePreviewImpl"),
     pdf("pdfFilePreviewImpl"),
     other("otherFilePreviewImpl"),
     media("mediaFilePreviewImpl"),
+    markdown("markdownFilePreviewImpl"),
     cad("cadFilePreviewImpl");
 
+
     private final String instanceName;
 
     FileType(String instanceName){

jodconverter-web/src/main/java/cn/keking/service/impl/MarkdownFilePreviewImpl.java

@@ -0,0 +1,27 @@
+package cn.keking.service.impl;
+
+import cn.keking.model.FileAttribute;
+import cn.keking.service.FilePreview;
+import org.springframework.stereotype.Service;
+import org.springframework.ui.Model;
+
+/**
+ * @author kl (http://kailing.pub)
+ * @since 2020/12/25
+ */
+@Service
+public class MarkdownFilePreviewImpl implements FilePreview {
+
+    private final SimTextFilePreviewImpl simTextFilePreview;
+
+    public MarkdownFilePreviewImpl(SimTextFilePreviewImpl simTextFilePreview) {
+        this.simTextFilePreview = simTextFilePreview;
+    }
+
+
+    @Override
+    public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
+        model.addAttribute("markdown","true");
+        return simTextFilePreview.filePreviewHandle(url, model, fileAttribute);
+    }
+}

jodconverter-web/src/main/java/cn/keking/utils/DownloadUtils.java

@@ -56,11 +56,11 @@ public class DownloadUtils {
         }
         try {
             URL url = new URL(urlStr);
-            if (url.getProtocol() != null && url.getProtocol().toLowerCase().startsWith("http")) {
+            if (url.getProtocol() != null && (url.getProtocol().toLowerCase().startsWith("file")||url.getProtocol().toLowerCase().startsWith("http"))) {
                 byte[] bytes = getBytesFromUrl(urlStr);
-                OutputStream os = new FileOutputStream(new File(realPath));
+                OutputStream os = new FileOutputStream(realPath);
                 saveBytesToOutStream(bytes, os);
-            } else if (url.getProtocol() != null && "ftp".equals(url.getProtocol().toLowerCase())) {
+            } else if (url.getProtocol() != null && "ftp".equalsIgnoreCase(url.getProtocol())) {
                 String ftpUsername = fileUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_USERNAME);
                 String ftpPassword = fileUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_PASSWORD);
                 String ftpControlEncoding = fileUtils.getUrlParameterReg(fileAttribute.getUrl(), URL_PARAM_FTP_CONTROL_ENCODING);

jodconverter-web/src/main/java/cn/keking/utils/FileUtils.java

@@ -27,7 +27,6 @@ public class FileUtils {
     private static final String DEFAULT_CONVERTER_CHARSET = System.getProperty("sun.jnu.encoding");
 
     private final String fileDir = ConfigConstants.getFileDir();
-
     private final CacheService cacheService;
 
     public FileUtils(CacheService cacheService) {
@@ -81,6 +80,9 @@ public class FileUtils {
         if (listOfficeTypes().contains(fileType.toLowerCase())) {
             return FileType.office;
         }
+        if("md".equalsIgnoreCase(fileType)){
+            return FileType.markdown;
+        }
         if (Arrays.asList(simText).contains(fileType.toLowerCase())) {
             return FileType.simText;
         }
@@ -323,7 +325,7 @@ public class FileUtils {
         FileType type;
         String suffix;
         String fullFileName = getUrlParameterReg(url, "fullfilename");
-        if (!StringUtils.isEmpty(fullFileName)) {
+        if (StringUtils.hasText(fullFileName)) {
             fileName = fullFileName;
             type = typeFromFileName(fileName);
             suffix = suffixFromFileName(fileName);

jodconverter-web/src/main/java/cn/keking/web/controller/OnlinePreviewController.java

@@ -32,11 +32,8 @@ public class OnlinePreviewController {
     private final Logger logger = LoggerFactory.getLogger(OnlinePreviewController.class);
 
     private final FilePreviewFactory previewFactory;
-
     private final CacheService cacheService;
-
     private final FileUtils fileUtils;
-
     private final DownloadUtils downloadUtils;
 
     public OnlinePreviewController(FilePreviewFactory filePreviewFactory,

jodconverter-web/src/main/resources/web/officePicture.ftl

@@ -63,12 +63,12 @@
     window.onscroll = throttle(checkImgs);
     function changePreviewType(previewType) {
         var url = window.location.href;
-        if (url.indexOf("officePreviewType=image") != -1) {
+        if (url.indexOf("officePreviewType=image") !== -1) {
             url = url.replace("officePreviewType=image", "officePreviewType="+previewType);
         } else {
             url = url + "&officePreviewType="+previewType;
         }
-        if ('allImages' == previewType) {
+        if ('allImages' === previewType) {
             window.open(url)
         } else {
             window.location.href = url;

jodconverter-web/src/main/resources/web/txt.ftl

@@ -1,28 +1,44 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
-    <meta charset="utf-8" />
+    <meta charset="utf-8"/>
     <meta name="viewport" content="width=device-width, user-scalable=yes, initial-scale=1.0">
     <title>普通文本预览</title>
-    <style>
-        * {
-            margin: 0;
-            padding: 0;
-        }
-        html, body {
-            height: 100%;
-            width: 100%;
-        }
-    </style>
 </head>
 <body>
-<div id = "text"></div>
+
+<div class="container" >
+    <#if markdown??>
+        <p>
+            <button id="markdown_btn" type="button" class="btn btn-primary">切换markdown</button>
+            <button id="text_btn" type="button" class="btn btn-primary">切换text</button>
+        </p>
+        <div id="markdown" style="padding: 18px;"></div>
+    <#else>
+        <div id="text"></div>
+    </#if>
+</div>
+
+<link rel="stylesheet" href="bootstrap/css/bootstrap.min.css"/>
 <script src="js/jquery-3.0.0.min.js" type="text/javascript"></script>
+<script src="js/jquery.form.min.js" type="text/javascript"></script>
+<script src="bootstrap/js/bootstrap.min.js" type="text/javascript"></script>
 <script src="js/watermark.js" type="text/javascript"></script>
+<script src="js/marked.min.js" type="text/javascript"></script>
+
 <script>
     /*初始化水印*/
-    window.onload = function() {
-        var watermarkTxt = '${watermarkTxt}';
+    window.onload = function () {
+        $("#markdown_btn").hide()
+        initWaterMark();
+        fetchData();
+    }
+
+    /**
+     * 初始化水印
+     */
+    function initWaterMark() {
+        let watermarkTxt = '${watermarkTxt}';
         if (watermarkTxt !== '') {
             watermark.init({
                 watermark_txt: '${watermarkTxt}',
@@ -34,23 +50,65 @@
                 watermark_y_space: ${watermarkYSpace},
                 watermark_font: '${watermarkFont}',
                 watermark_fontsize: '${watermarkFontsize}',
-                watermark_color:'${watermarkColor}',
+                watermark_color: '${watermarkColor}',
                 watermark_alpha: ${watermarkAlpha},
                 watermark_width: ${watermarkWidth},
                 watermark_height: ${watermarkHeight},
                 watermark_angle: ${watermarkAngle},
             });
         }
+    }
+
+    /**
+     * 获取文本数据
+     */
+    function fetchData() {
         $.ajax({
             type: 'GET',
             url: '${ordinaryUrl}',
             success: function (data) {
-                $("#text").html("<pre>" + data + "</pre>");
+                window.textData = data;
+                window.textPreData = "<pre>" + data + "</pre>";
+                window.textMarkdownData =  marked(window.textData);
+                $("#text").html(window.textPreData);
+                $("#markdown").html(window.textMarkdownData);
             }
         });
     }
 
+    $(function () {
+        $("#markdown_btn").click(function () {
+            $("#markdown").html(window.textMarkdownData);
+            $("#text_btn").show()
+            $("#markdown_btn").hide()
+        });
+
+        $("#text_btn").click(function () {
+            $("#markdown_btn").show()
+            $("#text_btn").hide();
+            $("#markdown").html(window.textPreData);
+        });
+    });
+
 </script>
+<style>
+    * {
+        margin: 0;
+        padding: 0;
+    }
+
+    html, body {
+        height: 100%;
+        width: 100%;
+    }
+    #markdown {
+        height: 97%;
+        max-height: 97%;
+        border: 1px solid #eee;
+        overflow-y: scroll;
+        width: 100%;
+    }
+</style>
 </body>
 
 </html>