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[英]What’s the best way to load a JSONObject from a json text file?
[英]What is the best way to get text from .eml file?
我嘗試從我本地驅動器上的幾個 eml 文件訪問主題和消息正文。 現在我嘗試使用 Apache Commons Email,但有時它會循環播放而沒有錯誤。 這是我的代碼,它應該從 eml 獲取文本並將其保存到 txt:
MimeMessage mimeMessage = MimeMessageUtils.createMimeMessage(null, file);
MimeMessageParser parser = new MimeMessageParser(mimeMessage);
if (parser.parse().hasPlainContent()) {
//Trying to get text of the message
try (FileWriter writer = new FileWriter(txtName)) {
writeHeaders(writer, parser);
writer.write(parser.parse().getPlainContent());
} catch (IOException e) {
e.printStackTrace();
}
} else if (parser.parse().hasHtmlContent()) {
try (FileWriter writer = new FileWriter(txtName)) {
writeHeaders(writer, parser);
String text = Jsoup.parse(parser.parse().getHtmlContent()).text();
writer.write(text);
} catch (IOException e) {
e.printStackTrace();
}
}
這里還有 writeHeaders 方法:
private void writeHeaders(FileWriter writer, MimeMessageParser parser) throws Exception {
writer.write("From :" + parser.getFrom() + "\n");
writer.write("To:" + parser.getTo() + "\n");
writer.write("Subject:" + parser.getSubject() + "\n");
writer.write("Message:" + "\n" + "\n");
}
這是獲取附件的方法:
if (parser.parse().hasAttachments()) {
//Getting and saving attachments from eml
List<DataSource> attachments = parser.parse().getAttachmentList();
for (DataSource attachment : attachments) {
if (attachment.getName() != null && !attachment.getName().isEmpty()) {
try (InputStream is = attachment.getInputStream()) {
File save = new File(saveDir + File.separator + attachment.getName());
FileOutputStream fos = new FileOutputStream(save);
byte[] buf = new byte[4096];
int bytesRead;
while ((bytesRead = is.read(buf)) != -1) {
fos.write(buf, 0, bytesRead);
}
fos.close();
if (save.getName().endsWith("eml")) {
parseEml(save, count);
}
} catch (Exception e) {
e.printStackTrace();
}
那么,也許有更簡單的方法來獲取文本和附件?
是的要容易得多。 Simple Java Mail (Github) 可以 讀取 .eml 文件並使內容非常易於訪問。 如果您在那里也發現了類似循環錯誤的東西(不太可能),我很樂意在那里為您提供幫助(我積極維護 Simple Java Mail):
Email email = EmailConverter.emlToEmail(emlFile);
email.getFromRecipient();
email.getSubject();
email.getPlainText();
email.getHTMLText();
email.getAttachments();
email.getEmbeddedImages();
email.getHeaders();
// etc. etc.
還支持 S/MIME 加密電子郵件(如果您有解密電子郵件所需的證書)。
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