java - 如何在 pdf 文件内容中搜索并附加到电子邮件

Question

这里，我在一个文件夹中有七个 pdf 文件，该文件保存在其“发票编号”中。例如，我的 pdf 如下所示

Bil-to 客户编号是 Delear 代码。我已经连接到 ms access 数据库并能够获取电子邮件 ID 和 Delear 代码。每个 pdf 中的本准则均有所不同。我的任务是在所有 pdf 文件中搜索这个 Delear 代码并附上相应的电子邮件 ID。 Db内容如下

STE002 a@gmail.com
C04004 a@gmail.com
RS0002 b@gmail.com
RS0006 b@gmail.com
RS0009 c@gmail.com
RS0001 c@gmail.com
C01020 d@gmail.com

我的电子邮件如下。

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    String url = "jdbc:odbc:PDF1";
    Connection con = DriverManager.getConnection(url);
     java.sql.Statement st = con.createStatement();

    String sql = "SELECT * FROM new";    // Retrieve data from Person table in database
    ResultSet rs = st.executeQuery(sql);

    while(rs.next()){


    String code = rs.getString("Dealer Code");
    String email = rs.getString("Dealer Email ID");

    System.out.println(+ code + " " + email);  

    //email


        String to = email;

      String from = "abcd.gmail.com";

      final String username = "abcd.gmail.com";//change accordingly
      final String password = "*******";//change accordingly

      // Assuming you are sending email through relay.jangosmtp.net
      String host = "smtp.gmail.com";

      Properties props = new Properties();
      props.put("mail.smtp.auth", "true");
      props.put("mail.smtp.starttls.enable", "true");
      props.put("mail.smtp.host", host);
      props.put("mail.smtp.port", "25");

      // Get the Session object.
      Session session = Session.getInstance(props,
         new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
               return new PasswordAuthentication(username, password);
            }
         });

      try {
         // Create a default MimeMessage object.
         Message message = new MimeMessage(session);

         // Set From: header field of the header.
         message.setFrom(new InternetAddress(from));

         // Set To: header field of the header.
         message.setRecipients(Message.RecipientType.TO,
            InternetAddress.parse(to));

         // Set Subject: header field
         message.setSubject("Testing Subject");

         // Create the message part
         BodyPart messageBodyPart = new MimeBodyPart();

         // Now set the actual message
         messageBodyPart.setText("This is message body");

         // Create a multipar message
         Multipart multipart = new MimeMultipart();

         // Set text message part
         multipart.addBodyPart(messageBodyPart);

         // Part two is attachment
         messageBodyPart = new MimeBodyPart();

         String filename = "E:\\Sales.pdf";

         DataSource source = new FileDataSource(filename);
         messageBodyPart.setDataHandler(new DataHandler(source));
         messageBodyPart.setFileName(filename);
         multipart.addBodyPart(messageBodyPart);

         // Send the complete message parts
         message.setContent(multipart);

         // Send message
         Transport.send(message);

         System.out.println("Sent message successfully....");

Answer 1

尝试使用Apache PDFBox这是text extraction tutorial

要查找 pdf 文件，请使用 listFiles(FileFilter filter) 以下是此方法的示例:

private static String directoryPath = "/Users/aal/Documents";
private static String extension = "pdf";

public static void main(String[] args) {

    File file = null;
    File[] paths;

    try {
        file = new File(directoryPath);

        FileFilter fileFilter = new FileFilter() {
            @Override
            public boolean accept(File pathname) {
                return pathname.getName().endsWith(extension);
            }
        };

        // returns pathnames for files and directory
        paths = file.listFiles(fileFilter);

        for (File path : paths) {
            // prints file and directory paths
            System.out.println(path);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

}