java html转word图片 java html 转图片

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落花有意飞花 2024-07-24 15:37:05
文章标签 java html转word图片 java mail html java System Text 文章分类 Java 后端开发
packagecjr.javamail;importjava.io.BufferedInputStream;importjava.io.BufferedOutputStream;importjava.io.File;importjava.io.FileNotFoundException;importjava.io.FileOutputStream;importjava.io.IOException;importjava.io.InputStream;importjava.io.UnsupportedEncodingException;importjava.text.SimpleDateFormat;importjava.util.Date;importjava.util.Properties;importjavax.mail.Address;importjavax.mail.BodyPart;importjavax.mail.Flags;importjavax.mail.Folder;importjavax.mail.Message;importjavax.mail.MessagingException;importjavax.mail.Multipart;importjavax.mail.Part;importjavax.mail.Session;importjavax.mail.Store;importjavax.mail.internet.InternetAddress;importjavax.mail.internet.MimeMessage;importjavax.mail.internet.MimeMultipart;importjavax.mail.internet.MimeUtility;importorg.junit.Test;public classReceiveMail {private static final String PROTOCOL = "pop3";private static final String USERNAME = "chenjiaren745@163.com";private static final String LOGINPASS = "cx*******29"; 
private static final String DIR = "D:\\mailTemp\\";//初始化连接邮件服务器的会话信息
private static Properties props = null;static{
props= newProperties();
props.setProperty("mail.store.protocol", "pop3"); //协议
props.setProperty("mail.pop3.port", "110"); //端口
props.setProperty("mail.pop3.host", "pop3.163.com"); //pop3服务器
File dir = newFile(DIR);
System.out.println(!dir.exists());if(!dir.exists())
dir.mkdirs();
System.out.println(dir.isDirectory());
}
@Testpublic void receive() throwsException {//创建Session实例对象
Session session =Session.getInstance(props);
Store store=session.getStore(PROTOCOL);
store.connect(USERNAME, LOGINPASS);//获得收件箱
Folder folder = store.getFolder("INBOX");/*Folder.READ_ONLY：只读权限
* Folder.READ_WRITE：可读可写(可以修改邮件的状态)*/folder.open(Folder.READ_WRITE);//打开收件箱//由于POP3协议无法获知邮件的状态,所以getUnreadMessageCount得到的是收件箱的邮件总数
System.out.println("未读邮件数: " +folder.getUnreadMessageCount());//由于POP3协议无法获知邮件的状态,所以下面得到的结果始终都是为0
System.out.println("删除邮件数: " +folder.getDeletedMessageCount());
System.out.println("新邮件: " +folder.getNewMessageCount());//获得收件箱中的邮件总数
System.out.println("邮件总数: " +folder.getMessageCount());//得到收件箱中的所有邮件,并解析
Message[] messages =folder.getMessages();
parseMessage(messages);//释放资源
folder.close(true);
store.close();
}/*** 解析邮件
*@parammessages 要解析的邮件列表*/
public void parseMessage(Message ...messages) throwsMessagingException, IOException {if (messages == null || messages.length < 1)throw new MessagingException("未找到要解析的邮件!");//解析所有邮件
for (int i = 0, count = messages.length; i < count; i++) {
MimeMessage msg=(MimeMessage) messages[i];
System.out.println("------------------解析第" + msg.getMessageNumber() + "封邮件-------------------- ");
System.out.println("主题: " +getSubject(msg));
System.out.println("发件人: " +getFrom(msg));
System.out.println("收件人：" + getReceiveAddress(msg, null));
System.out.println("发送时间：" + getSentDate(msg, null));
System.out.println("是否已读：" +isSeen(msg));
System.out.println("邮件优先级：" +getPriority(msg));
System.out.println("是否需要回执：" +isReplySign(msg));
System.out.println("邮件大小：" + msg.getSize() * 1024 + "kb");boolean isContainerAttachment =isContainAttachment(msg);
System.out.println("是否包含附件：" +isContainerAttachment);if(isContainerAttachment) {
saveAttachment(msg, DIR+ msg.getSubject() + "_"); //保存附件
}
StringBuffer content= new StringBuffer(30);
getMailTextContent(msg, content);
System.out.println("邮件正文：" + (content.length() > 100 ? content.substring(0,100) + "...": content));
System.out.println("------------------第" + msg.getMessageNumber() + "封邮件解析结束-------------------- ");
System.out.println();
}
}/*** 获得邮件主题
*@parammsg 邮件内容
*@return解码后的邮件主题*/
public static String getSubject(MimeMessage msg) throwsUnsupportedEncodingException, MessagingException {returnMimeUtility.decodeText(msg.getSubject());
}/*** 获得邮件发件人
*@parammsg 邮件内容
*@return姓名 
*@throwsMessagingException
*@throwsUnsupportedEncodingException*/
public static String getFrom(MimeMessage msg) throwsMessagingException, UnsupportedEncodingException {
String from= "";
Address[] froms=msg.getFrom();if (froms.length < 1)throw new MessagingException("没有发件人!");
InternetAddress address= (InternetAddress) froms[0];
String person=address.getPersonal();if (person != null) {
person= MimeUtility.decodeText(person) + " ";
}else{
person= "";
}
from= person + "";returnfrom;
}/*** 根据收件人类型，获取邮件收件人、抄送和密送地址。如果收件人类型为空，则获得所有的收件人
* 
Message.RecipientType.TO 收件人
* 
Message.RecipientType.CC 抄送
* 
Message.RecipientType.BCC 密送
*@parammsg 邮件内容
*@paramtype 收件人类型
*@return收件人1 , 收件人2 , ...
*@throwsMessagingException*/
public static String getReceiveAddress(MimeMessage msg, Message.RecipientType type) throwsMessagingException {
StringBuffer receiveAddress= newStringBuffer();
Address[] addresss= null;if (type == null) {
addresss=msg.getAllRecipients();
}else{
addresss=msg.getRecipients(type);
}if (addresss == null || addresss.length < 1)throw new MessagingException("没有收件人!");for(Address address : addresss) {
InternetAddress internetAddress=(InternetAddress)address;
receiveAddress.append(internetAddress.toUnicodeString()).append(",");
}
receiveAddress.deleteCharAt(receiveAddress.length()-1); //删除最后一个逗号
returnreceiveAddress.toString();
}/*** 获得邮件发送时间
*@parammsg 邮件内容
*@returnyyyy年mm月dd日 星期X HH:mm
*@throwsMessagingException*/
public static String getSentDate(MimeMessage msg, String pattern) throwsMessagingException {
Date receivedDate=msg.getSentDate();if (receivedDate == null)return "";if (pattern == null || "".equals(pattern))
pattern= "yyyy年MM月dd日 E HH:mm ";return newSimpleDateFormat(pattern).format(receivedDate);
}/*** 判断邮件中是否包含附件
*@parammsg 邮件内容
*@return邮件中存在附件返回true，不存在返回false
*@throwsMessagingException
*@throwsIOException*/
public static boolean isContainAttachment(Part part) throwsMessagingException, IOException {boolean flag = false;if (part.isMimeType("multipart/*")) {
MimeMultipart multipart=(MimeMultipart) part.getContent();int partCount =multipart.getCount();for (int i = 0; i < partCount; i++) {
BodyPart bodyPart=multipart.getBodyPart(i);
String disp=bodyPart.getDisposition();if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) ||disp.equalsIgnoreCase(Part.INLINE))) {
flag= true;
}else if (bodyPart.isMimeType("multipart/*")) {
flag=isContainAttachment(bodyPart);
}else{
String contentType=bodyPart.getContentType();if (contentType.indexOf("application") != -1) {
flag= true;
}if (contentType.indexOf("name") != -1) {
flag= true;
}
}if (flag) break;
}
}else if (part.isMimeType("message/rfc822")) {
flag=isContainAttachment((Part)part.getContent());
}returnflag;
}/*** 判断邮件是否已读
*@parammsg 邮件内容
*@return如果邮件已读返回true,否则返回false
*@throwsMessagingException*/
public static boolean isSeen(MimeMessage msg) throwsMessagingException {returnmsg.getFlags().contains(Flags.Flag.SEEN);
}/*** 判断邮件是否需要阅读回执
*@parammsg 邮件内容
*@return需要回执返回true,否则返回false
*@throwsMessagingException*/
public static boolean isReplySign(MimeMessage msg) throwsMessagingException {boolean replySign = false;
String[] headers= msg.getHeader("Disposition-Notification-To");if (headers != null)
replySign= true;returnreplySign;
}/*** 获得邮件的优先级
*@parammsg 邮件内容
*@return1(High):紧急 3:普通(Normal) 5:低(Low)
*@throwsMessagingException*/
public String getPriority(MimeMessage msg) throwsMessagingException {
String priority= "普通";
String[] headers= msg.getHeader("X-Priority");if (headers != null) {
String headerPriority= headers[0];if (headerPriority.indexOf("1") != -1 || headerPriority.indexOf("High") != -1)
priority= "紧急";else if (headerPriority.indexOf("5") != -1 || headerPriority.indexOf("Low") != -1)
priority= "低";elsepriority= "普通";
}returnpriority;
}/*** 获得邮件文本内容
*@parampart 邮件体
*@paramcontent 存储邮件文本内容的字符串
*@throwsMessagingException
*@throwsIOException*/
public void getMailTextContent(Part part, StringBuffer content) throwsMessagingException, IOException {//如果是文本类型的附件，通过getContent方法可以取到文本内容，但这不是我们需要的结果，所以在这里要做判断
boolean isContainTextAttach = part.getContentType().indexOf("name") > 0;if (part.isMimeType("text/*") && !isContainTextAttach) {
content.append(part.getContent().toString());
}else if (part.isMimeType("message/rfc822")) {
getMailTextContent((Part)part.getContent(),content);
}else if (part.isMimeType("multipart/*")) {
Multipart multipart=(Multipart) part.getContent();int partCount =multipart.getCount();for (int i = 0; i < partCount; i++) {
BodyPart bodyPart=multipart.getBodyPart(i);
getMailTextContent(bodyPart,content);
}
}
}/*** 保存附件
*@parampart 邮件中多个组合体中的其中一个组合体
*@paramdestDir 附件保存目录
*@throwsUnsupportedEncodingException
*@throwsMessagingException
*@throwsFileNotFoundException
*@throwsIOException*/
public void saveAttachment(Part part, String destDir) throwsUnsupportedEncodingException, MessagingException,
FileNotFoundException, IOException {if (part.isMimeType("multipart/*")) {
Multipart multipart= (Multipart) part.getContent(); //复杂体邮件//复杂体邮件包含多个邮件体
int partCount =multipart.getCount();for (int i = 0; i < partCount; i++) {//获得复杂体邮件中其中一个邮件体
BodyPart bodyPart =multipart.getBodyPart(i);//某一个邮件体也有可能是由多个邮件体组成的复杂体
String disp =bodyPart.getDisposition();if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) ||disp.equalsIgnoreCase(Part.INLINE))) {
InputStream is=bodyPart.getInputStream();
saveFile(is, destDir, decodeText(bodyPart.getFileName()));
}else if (bodyPart.isMimeType("multipart/*")) {
saveAttachment(bodyPart,destDir);
}else{
String contentType=bodyPart.getContentType();if (contentType.indexOf("name") != -1 || contentType.indexOf("application") != -1) {
saveFile(bodyPart.getInputStream(), destDir, decodeText(bodyPart.getFileName()));
}
}
}
}else if (part.isMimeType("message/rfc822")) {
saveAttachment((Part) part.getContent(),destDir);
}
}/*** 读取输入流中的数据保存至指定目录
*@paramis 输入流
*@paramfileName 文件名
*@paramdestDir 文件存储目录
*@throwsFileNotFoundException
*@throwsIOException*/
private voidsaveFile(InputStream is, String destDir, String fileName)throwsFileNotFoundException, IOException {
BufferedInputStream bis= newBufferedInputStream(is);
BufferedOutputStream bos= newBufferedOutputStream(new FileOutputStream(new File(destDir +fileName)));int len = -1;while ((len = bis.read()) != -1) {
bos.write(len);
bos.flush();
}
bos.close();
bis.close();
}/*** 文本解码
*@paramencodeText 解码MimeUtility.encodeText(String text)方法编码后的文本
*@return解码后的文本
*@throwsUnsupportedEncodingException*/
public String decodeText(String encodeText) throwsUnsupportedEncodingException {if (encodeText == null || "".equals(encodeText)) {return "";
}else{returnMimeUtility.decodeText(encodeText);
}
}
}
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