outlook邮件样式解析html

server/pom.xml

@@ -305,6 +305,34 @@
             </exclusions>
         </dependency>
         <!-- test dependency - end -->
+
+        <!--msg格式邮件解析 开始-->
+        <dependency>
+            <groupId>org.simplejavamail</groupId>
+            <artifactId>outlook-message-parser</artifactId>
+            <version>1.10.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.10</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jsoup</groupId>
+            <artifactId>jsoup</artifactId>
+            <version>1.8.3</version>
+        </dependency>
+        <dependency>
+            <groupId>jakarta.activation</groupId>
+            <artifactId>jakarta.activation-api</artifactId>
+            <version>2.0.1</version> <!-- Use the latest version available -->
+        </dependency>
+        <!--msg格式邮件解析 结束-->
+        <dependency>
+            <groupId>cn.hutool</groupId>
+            <artifactId>hutool-core</artifactId>
+            <version>5.8.16</version>
+        </dependency>
     </dependencies>
 
     <build>

server/src/main/java/cn/keking/model/FileType.java

@@ -32,7 +32,8 @@ public enum FileType {
     EPUB("epubFilePreviewImpl"),
     BPMN("bpmnFilePreviewImpl"),
     DCM("dcmFilePreviewImpl"),
-    DRAWIO("drawioFilePreviewImpl");
+    DRAWIO("drawioFilePreviewImpl"),
+    MSG("msgFilePreviewImpl");
 
     private static final String[] OFFICE_TYPES = {"docx", "wps", "doc", "docm", "xls", "xlsx", "csv" ,"xlsm", "ppt", "pptx", "vsd", "rtf", "odt", "wmf", "emf", "dps", "et", "ods", "ots", "tsv", "odp", "otp", "sxi", "ott", "vsdx", "fodt", "fods", "xltx","tga","psd","dotm","ett","xlt","xltm","wpt","dot","xlam","dotx","xla","pages", "eps"};
     private static final String[] PICTURE_TYPES = {"jpg", "jpeg", "png", "gif", "bmp", "ico", "jfif", "webp"};
@@ -112,6 +113,7 @@ public enum FileType {
         FILE_TYPE_MAPPER.put("md", FileType.MARKDOWN);
         FILE_TYPE_MAPPER.put("pdf", FileType.PDF);
         FILE_TYPE_MAPPER.put("bpmn", FileType.BPMN);
+        FILE_TYPE_MAPPER.put("msg", FileType.MSG);
     }
 
     private static FileType to(String fileType) {

server/src/main/java/cn/keking/service/FilePreview.java

@@ -34,5 +34,7 @@ public interface FilePreview {
     String XLSX_FILE_PREVIEW_PAGE = "officeweb";
     String CSV_FILE_PREVIEW_PAGE = "csv";
 
+    String MSG_FILE_PREVIEW_PAGE = "msg";
+
     String filePreviewHandle(String url, Model model, FileAttribute fileAttribute);
 }

server/src/main/java/cn/keking/service/FileVo.java

@@ -0,0 +1,51 @@
+package cn.keking.service;
+
+public class FileVo {
+    /**
+     * 文件名
+     */
+    private  String  fileName;
+    /**
+     * 文件路径
+     */
+    private  String  filePath;
+
+    /**
+     * UUID
+     */
+    private String contentId;
+
+    public String getFileName() {
+        return fileName;
+    }
+
+    public void setFileName(String fileName) {
+        this.fileName = fileName;
+    }
+
+
+    public String getFilePath() {
+        return filePath;
+    }
+
+    public void setFilePath(String filePath) {
+        this.filePath = filePath;
+    }
+
+    public String getContentId() {
+        return contentId;
+    }
+
+    public void setContentId(String contentId) {
+        this.contentId = contentId;
+    }
+
+    public FileVo() {
+    }
+
+    public FileVo(String fileName, String filePath,String contentId) {
+        this.fileName = fileName;
+        this.filePath = filePath;
+        this.contentId = contentId;
+    }
+}

server/src/main/java/cn/keking/service/impl/MsgFilePreviewImpl.java

@@ -0,0 +1,28 @@
+package cn.keking.service.impl;
+
+import cn.keking.model.FileAttribute;
+import cn.keking.service.FilePreview;
+import org.springframework.stereotype.Component;
+import org.springframework.ui.Model;
+
+/**
+ * MSG 文件预览 impl
+ *
+ * @author albert.chen
+ * @date 2024/03/11
+ */
+@Component
+public class MsgFilePreviewImpl implements FilePreview {
+
+    private final OtherFilePreviewImpl otherFilePreview;
+
+
+    public MsgFilePreviewImpl(OtherFilePreviewImpl otherFilePreview) {
+        this.otherFilePreview = otherFilePreview;
+    }
+
+    @Override
+    public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
+        return null;
+    }
+}

server/src/main/java/cn/keking/utils/MsgUtil.java

@@ -0,0 +1,192 @@
+package cn.keking.utils;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.core.util.StrUtil;
+import cn.keking.service.FileVo;
+import org.apache.commons.lang3.StringUtils;
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+import org.jsoup.select.Elements;
+import org.simplejavamail.outlookmessageparser.OutlookMessageParser;
+import org.simplejavamail.outlookmessageparser.model.*;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.nio.file.StandardOpenOption;
+import java.util.ArrayList;
+import java.util.Base64;
+import java.util.List;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+public class MsgUtil {
+
+    /**
+     * 邮件转换为HTML
+     * @param file .msg文件
+     * @return {@link FileVo}
+     * @throws IOException IO异常
+     */
+    public static FileVo msgParseToPreview(File file) throws IOException {
+        OutlookMessageParser messageParser = new OutlookMessageParser();
+        OutlookMessage msg = messageParser.parseMsg(file.getAbsolutePath());
+        List<FileVo> attachList = new ArrayList<>();
+        List<OutlookAttachment> outlookAttachments = msg.getOutlookAttachments();
+        for (OutlookAttachment outlookattachment : outlookAttachments) {
+            if (outlookattachment instanceof OutlookMsgAttachment) {
+                attachList.add(msgAttachmentToFile((OutlookMsgAttachment) outlookattachment));
+            }else if(outlookattachment instanceof OutlookFileAttachment){
+                attachList.add(fileAttachToFile((OutlookFileAttachment) outlookattachment));
+            }
+        }
+        String html = messageToHtml(msg,attachList);
+        File tmpFile = createTmpFileWithName(file.getName().substring(0,file.getName().lastIndexOf("."))+".html");
+        Path path = Files.write(tmpFile.toPath(), html.getBytes(), StandardOpenOption.TRUNCATE_EXISTING);
+        return new FileVo(file.getName(),path.toFile().getAbsolutePath(), cn.hutool.core.lang.UUID.randomUUID().toString());
+    }
+
+    /**
+     * 邮件内容转换为html
+     * @param msg         味精
+     * @param attachments
+     * @return {@link String}
+     * @throws IOException IO异常
+     */
+    private static String messageToHtml(OutlookMessage msg,List<FileVo> attachments) throws IOException {
+        String bodyText = msg.getBodyText();
+        //主题
+        String subject = msg.getSubject();
+        //主题即为文件名
+        String form = msg.getFromEmail();
+        String to = msg.getDisplayTo();
+        String cc = msg.getDisplayCc();
+        String content = StrUtil.EMPTY;
+        if(StrUtil.isNotEmpty(bodyText)){
+            Document doc = Jsoup.parse(msg.getConvertedBodyHTML());
+            //邮件中的图片转base64
+            Elements imgList = doc.select("img");
+            for (Element element : imgList) {
+                String src = element.attr("src");
+                if (!src.contains("cid:")) {
+                    continue;
+                }
+                String contentId = src.substring(4);
+                FileVo fileVo = null;
+                for (FileVo tmp : attachments) {
+                    if (contentId.equals(tmp.getContentId())) {
+                        fileVo = tmp;
+                        break;
+                    }
+                }
+                if (fileVo == null) {
+                    continue;
+                }
+                File attach = new File(fileVo.getFilePath());
+                String base64 = null;
+                try(InputStream in = Files.newInputStream(attach.toPath())){
+                    byte[] bytes = new byte[(int) attach.length()];
+                    in.read(bytes);
+                    base64 = Base64.getEncoder().encodeToString(bytes);
+                }catch (Exception e){
+                    e.printStackTrace();
+                }
+                if (StringUtils.isNotBlank(base64)) {
+                    String srcBase64 = "data:image/png;base64," + base64;
+                    element.attr("src", fileVo.getFilePath());
+                    if (CollUtil.isNotEmpty(attachments) && attachments.contains(fileVo)) {
+                        attachments.remove(fileVo);
+                    }
+                }
+            }
+            // 内容
+            Elements bodyList = doc.select("body");
+            if (!bodyList.isEmpty()) {
+                Element bodyEle = bodyList.first();
+                if (!bodyEle.html().isEmpty()) {
+                    content = bodyEle.html();
+                }
+            }
+        }
+        String html =
+                "发件人:" + form + "</br>" +
+                        "抄送:" + cc + "</br>" +
+                        "收件人:" + to + "</br>" +
+                        "主题:" + subject + "</br>"+
+                        "附件:" + attachments.stream()
+                        .map(file -> "<a href=\">"+file.getFilePath()+"\">"+file.getFileName()+"</>")
+                        .collect(Collectors.joining(",")) + "</br>"+
+                        content;
+        return html;
+    }
+
+    /**
+     * .msg文件转换为文件
+     *
+     * @param attachment 附件
+     * @return {@link FileVo}
+     * @throws IOException IO异常
+     */
+    private static FileVo msgAttachmentToFile(OutlookMsgAttachment attachment) throws IOException {
+        //附件
+        List<OutlookAttachment> outlookAttachments = attachment.getOutlookMessage().getOutlookAttachments();
+        List<FileVo> attachList = new ArrayList<>();
+        for (OutlookAttachment outlookAttachment : outlookAttachments) {
+            if(outlookAttachment instanceof OutlookMsgAttachment){
+                attachList.add(msgAttachmentToFile((OutlookMsgAttachment) outlookAttachment));
+            }else if(outlookAttachment instanceof OutlookFileAttachment){
+                attachList.add(fileAttachToFile((OutlookFileAttachment) outlookAttachment));
+            }
+        }
+        //主题
+        String subject = attachment.getOutlookMessage().getSubject();
+        //邮件内容
+        String html = messageToHtml(attachment.getOutlookMessage(), attachList);
+        File file = createTmpFileWithName(subject+".html");
+        Path path = Files.write(file.toPath(), html.getBytes(), StandardOpenOption.TRUNCATE_EXISTING);
+       return new FileVo(subject,path.toFile().getAbsolutePath(),attachment.getOutlookMessage().getMessageId());
+    }
+
+    /**
+     * 附件下载到本地
+     *
+     * @param attachment 附件
+     * @return {@link FileVo}
+     * @throws IOException IO异常
+     */
+    private static FileVo fileAttachToFile(OutlookFileAttachment attachment) throws IOException {
+        String attachName = attachment.getLongFilename();
+        //存在没有命名的文件
+        if (StringUtils.isBlank(attachName)){
+            attachName= UUID.randomUUID().toString().replace("-", "");
+        }
+        //创建临时文件
+        File attachementFile = createTmpFileWithName(attachName);
+        InputStream is = new ByteArrayInputStream(attachment.getData());
+        Files.copy(is, attachementFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
+        if (ObjectUtil.isNotNull(attachementFile)) {
+            return new FileVo(attachName,attachementFile.getAbsolutePath(),attachment.getContentId());
+        }
+        return null;
+    }
+
+    private static File getTmpDir() {
+        String projectPath = System.getProperty("user.dir") + File.separator + "temp";
+        File file = new File(projectPath);
+        if (!file.exists()) {
+            file.mkdirs();
+        }
+        return file;
+    }
+
+    private static File createTmpFileWithName(String fileName) throws IOException {
+        File file = new File(getTmpDir(), fileName);
+        if (!file.exists()) {
+            file.createNewFile();
+        }
+        return file;
+    }
+}