有一部分内容进行了注释和处理，参考需要修改成自己的实际参数。另这个是对于实际一个场景的案例并不是通用解决的工具类。
import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.select.Elements; import javax.mail.Folder; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.Multipart; import javax.mail.Part; import javax.mail.Session; import javax.mail.Store; import javax.mail.URLName; import javax.mail.internet.MimeMessage; import javax.mail.internet.MimeUtility; import java.io.UnsupportedEncodingException; import java.math.BigDecimal; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.List; import java.util.Properties; import static java.lang.System.out; /** * 描述：把邮件转换成此类的一个实例进行处理 */ /** * <!-- https://mvnrepository.com/artifact/javax.mail/javax.mail-api --> * <dependency> * <groupId>javax.mail</groupId> * <artifactId>mail</artifactId> * <version>1.4.7</version> * </dependency> * <p> * <!-- https://mvnrepository.com/artifact/org.jsoup/jsoup --> * <dependency> * <groupId>org.jsoup</groupId> * <artifactId>jsoup</artifactId> * <version>1.12.1</version> * </dependency> */ public class ReceiveOneMail { /** * 邮件信息 */ private MimeMessage mimeMessage; /** * 邮件正文内容 */ private StringBuffer bodyText = new StringBuffer(); public ReceiveOneMail(MimeMessage mimeMessage) { this.mimeMessage = mimeMessage; } /** * main测试方法 */ public static void main(String args[]) throws Exception { Message[] messages = testInit(); ReceiveOneMail pmm = null; // 循环测试邮件的收件箱邮件【时间倒序】 for (int i = messages.length; i >= 0; i--) { // // 构建 ReceiveOneMail 实例 pmm = new ReceiveOneMail((MimeMessage) messages[i]); out.println("---------" + pmm.getSubject() + "--------"); pmm.getMailContent((Part) messages[i]); List<MailContentTableInfo> list = pmm.parseContent(); // 模拟输出解析结果 for (MailContentTableInfo mailContentTableInfo : list) { out.println(mailContentTableInfo.toString()); } } } /** * 初始化构建一个连接邮箱的信息进行测试 * * @return 一个数组邮件信息 * @throws MessagingException 邮件信息异常 */ public static Message[] testInit() throws MessagingException { Properties props = System.getProperties(); props.put("mail.pop3.host", "【实际值】"); Session session = Session.getDefaultInstance(props, null); URLName url = new URLName("pop3", "【实际值】", 110, null, "【邮箱地址】", "【邮箱密码】"); Store store = session.getStore(url); store.connect(); Folder folder = store.getFolder("INBOX"); folder.open(Folder.READ_ONLY); return folder.getMessages(); } /** * 处理邮件中的正文，解析出里面的表格【第一个表格】 * 按照【委托资金划拨】的规则进行解析并实例化为一组MailContentTableInfo */ public List<MailContentTableInfo> parseContent() throws MessagingException, ParseException { List<MailContentTableInfo> list = new ArrayList<>(); Document doc = Jsoup.parse(this.getBodyText()); // 处理匹配到的第一个 table 表格，并且获得表格中的所有行 Elements rows = doc.select("table").get(0).select("tr"); Elements firstRowCols = rows.get(0).select("td"); Elements lastRowCols = rows.get(rows.size() - 1).select("td"); // 处理整个表格的业务时间 String transferDate = evalTransferDate(rows.get(1).select("td").get(0).text()); for (int i = 1; i < firstRowCols.size(); i++) { MailContentTableInfo mailContentTableInfo = new MailContentTableInfo(); mailContentTableInfo.setMailDate(this.getSentDate()); mailContentTableInfo.setTransferDate(transferDate); mailContentTableInfo.setProductName(firstRowCols.get(i).text().replace(" ", "")); mailContentTableInfo.setTransferAmount(new BigDecimal(lastRowCols.get(i).text().replace(",", ""))); list.add(mailContentTableInfo); } return list; } /** * 处理表格中的业务日期，和邮件发送时间的年份拼接成8位的字符日期； * 原有表格中的日期是 6月2日这种，所以需要特殊处理。 */ private String evalTransferDate(String transferDateText) throws MessagingException { String[] transferMonthDate = transferDateText.split("月"); String month = transferMonthDate[0].length() == 1 ? "0" + transferMonthDate[0] : transferMonthDate[0]; String[] transferDayDate = transferMonthDate[1].split("日"); String day = transferDayDate[0].length() == 1 ? "0" + transferDayDate[0] : transferDayDate[0]; return this.getSentYearDate() + month + day; } /** * 获得邮件发送日期 */ private String getSentDate() throws MessagingException { return new SimpleDateFormat("yyyyMMdd").format(mimeMessage.getSentDate()); } /** * 获得邮件发送年 */ private String getSentYearDate() throws MessagingException { return this.getSentDate().substring(0, 4); } /** * 获得当前邮件主题 */ private String getSubject() throws MessagingException, UnsupportedEncodingException { String subject = MimeUtility.decodeText(mimeMessage.getSubject()); return subject == null ? "" : subject; } /** * 获得邮件正文内容 */ private String getBodyText() { return bodyText.toString(); } /** * 解析邮件，把得到的邮件内容保存到一个StringBuffer对象中，解析邮件 主要是根据MimeType类型的不同执行不同的操作，一步一步的解析 */ private void getMailContent(Part part) throws Exception { String contentType = part.getContentType(); int nameIndex = contentType.indexOf("name"); boolean conName = false; if (nameIndex != -1) { conName = true; } if (part.isMimeType("text/plain") && !conName) { bodyText.append((String) part.getContent()); } else if (part.isMimeType("text/html") && !conName) { bodyText.append((String) part.getContent()); } else if (part.isMimeType("multipart/*")) { Multipart multipart = (Multipart) part.getContent(); int counts = multipart.getCount(); for (int i = 0; i < counts; i++) { getMailContent(multipart.getBodyPart(i)); } } else if (part.isMimeType("message/rfc822")) { getMailContent((Part) part.getContent()); } } } /** * 定义解析邮件表格内容后的实体类 */ class MailContentTableInfo { private String col1; private String col2; private String col3; private BigDecimal col4; public String getMailDate() { return col1; } public void setMailDate(String mailDate) { this.col1 = mailDate; } public String getProductName() { return col3; } public void setProductName(String productName) { this.col3 = productName; } public BigDecimal getTransferAmount() { return col4; } public void setTransferAmount(BigDecimal transferAmount) { this.col4 = transferAmount; } public String getTransferDate() { return col2; } public void setTransferDate(String transferDate) { this.col2 = transferDate; } @Override public String toString() { return "MailContentTableInfo{" + "col1=" + col1 + ", col2=" + col2 + ", col3='" + col3 + '\'' + ", col4=" + col4 + '}'; } }