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  • (转)javamail发送带附件邮件

    最近在搞javamail发送 一直没找到好的源码
    这个测试过 完全通过

    需要下载一个Email.jar包
    package com.zlz3907.mail;
    
    import java.io.BufferedReader; 
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.io.UnsupportedEncodingException;
    import java.net.Socket;
    import java.nio.charset.Charset;
    import java.text.SimpleDateFormat;
    import java.util.ArrayList;
    import java.util.Date;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    
    import sun.misc.BASE64Encoder;
    
    /**
     * 该类使用Socket连接到邮件服务器,
     * 并实现了向指定邮箱发送邮件及附件的功能。
     * 可带附件
     * @author Zhong Lizhi
     */
    public class Mail {
        
        /**
         * 换行符
         */
        private static final String LINE_END = "\r\n";
        
        /**
         * 值为“true”输出高度信息(包括服务器响应信息),值为“
         * false”则不输出调试信息。
         */
        private boolean isDebug = true;
        
        /**
         * 值为“true”则在发送邮件{@link Mail#send()}
         * 过程中会读取服务器端返回的消息,
         * 并在邮件发送完毕后将这些消息返回给用户。
         */
        private boolean isAllowReadSocketInfo = true;
        
        /**
         * 邮件服务器地址
         */
        private String host;
        
        /**
         * 发件人邮箱地址
         */
        private String from;
        
        /**
         * 收件人邮箱地址
         */
        private List<String> to;
        
        /**
         * 抄送地址
         */
        private List<String> cc;
        
        /**
         * 暗送地址
         */
        private List<String> bcc;
        
        /**
         * 邮件主题
         */
        private String subject;
        
        /**
         * 用户名
         */
        private String user;
        
        /**
         * 密码
         */
        private String password;
        
        /**
         * MIME邮件类型
         */
        private String contentType;
        
        /**
         * 用来绑定多个邮件单元{@link #partSet}
         * 的分隔标识,我们可以将邮件的正文及每一个附件都看作是一个邮件单元
         * 。
         */
        private String boundary;
        
        /**
         * 邮件单元分隔标识符,该属性将用来在邮件中作为分割各个邮件单元的标识
         * 。
         */
        private String boundaryNextPart;
        
        /**
         * 传输邮件所采用的编码
         */
        private String contentTransferEncoding;
        
        /**
         * 设置邮件正文所用的字符集
         */
        private String charset;
        
        /**
         * 内容描述
         */
        private String contentDisposition;
        
        /**
         * 邮件正文
         */
        private String content;
        
        /**
         * 发送邮件日期的显示格式
         */
        private String simpleDatePattern;
        
        /**
         * 附件的默认MIME类型
         */
        private String defaultAttachmentContentType;
        
        /**
         * 邮件单元的集合,用来存放正文单元和所有的附件单元。
         */
        private List<MailPart> partSet;
        
        /**
         * 不同类型文件对应的{@link MIME} 类型映射。在添加附件
         * {@link #addAttachment(String)}
         * 时,程序会在这个映射中查找对应文件的 {@link MIME}
         * 类型,如果没有, 则使用
         * {@link #defaultAttachmentContentType}
         * 所定义的类型。
         */
        private static Map<String, String> contentTypeMap;
        
        static {
            // MIME Media Types
            contentTypeMap = new HashMap<String, String>();
            contentTypeMap.put("xls", "application/vnd.ms-excel");
            contentTypeMap.put("xlsx", "application/vnd.ms-excel");
            contentTypeMap.put("xlsm", "application/vnd.ms-excel");
            contentTypeMap.put("xlsb", "application/vnd.ms-excel");
            contentTypeMap.put("doc", "application/msword");
            contentTypeMap.put("dot", "application/msword");
            contentTypeMap.put("docx", "application/msword");
            contentTypeMap.put("docm", "application/msword");
            contentTypeMap.put("dotm", "application/msword");
        }
        /**
         * 该类用来实例化一个正文单元或附件单元对象,他继承了
         * {@link Mail}
         * ,在这里制作这个子类主要是为了区别邮件单元对象和邮件服务对象
         * ,使程序易读一些。 这些邮件单元全部会放到partSet
         * 中,在发送邮件 {@link #send()}时, 程序会调用
         * {@link #getAllParts()}
         * 方法将所有的单元合并成一个符合MIME格式的字符串。
         * 
         * @author Zhong Lizhi
         */
        private class MailPart extends Mail {
            public MailPart() {
            }
        }
        
        /**
         * 默认构造函数
         */
        public Mail() {
            defaultAttachmentContentType = "application/octet-stream";
            simpleDatePattern = "yyyy-MM-dd HH:mm:ss";
            boundary = "--=_NextPart_zlz_3907_" + System.currentTimeMillis();
            boundaryNextPart = "--" + boundary;
            contentTransferEncoding = "base64";
            contentType = "multipart/alternative";
            charset = Charset.defaultCharset().name();
            partSet = new ArrayList<MailPart>();
            to = new ArrayList<String>();
            cc = new ArrayList<String>();
            bcc = new ArrayList<String>();
        }
        
        /**
         * 根据指定的完整文件名在
         * {@link #contentTypeMap}
         * 中查找其相应的MIME类型, 如果没找到,则返回
         * {@link #defaultAttachmentContentType}
         * 所指定的默认类型。
         * 
         * @param fileName
         *            文件名
         * @return 返回文件对应的MIME类型。
         */
        private String getPartContentType(String fileName) {
            String ret = null;
            if (null != fileName) {
                int flag = fileName.lastIndexOf(".");
                if (0 <= flag && flag < fileName.length() - 1) {
                    fileName = fileName.substring(flag + 1);
                }
                ret = contentTypeMap.get(fileName);
            }
            
            if (null == ret) {
                ret = defaultAttachmentContentType;
            }
            return ret;
        }
        
        /**
         * 将给定字符串转换为base64编码的字符串
         * 
         * @param str
         *            需要转码的字符串
         * @param charset
         *            原字符串的编码格式
         * @return base64编码格式的字符
         */
        private String toBase64(String str, String charset) {
            if (null != str) {
                try {
                    return toBase64(str.getBytes(charset));
                } catch (UnsupportedEncodingException e) {
                    e.printStackTrace();
                }
            }
            return "";
        }
        
        /**
         * 将指定的字节数组转换为base64格式的字符串
         * 
         * @param bs
         *            需要转码的字节数组
         * @return base64编码格式的字符
         */
        private String toBase64(byte[] bs) {
            return new BASE64Encoder().encode(bs);
        }
        
        /**
         * 将给定字符串转换为base64编码的字符串
         * 
         * @param str
         *            需要转码的字符串
         * @return base64编码格式的字符
         */
        private String toBase64(String str) {
            return toBase64(str, Charset.defaultCharset().name());
        }
        
        /**
         * 将所有的邮件单元按照标准的MIME格式要求合并。
         * 
         * @return 返回一个所有单元合并后的字符串。
         */
        private String getAllParts() {
            int partCount = partSet.size();
            StringBuilder sbd = new StringBuilder(LINE_END);
            for (int i = partCount - 1; i >= 0; i--) {
                Mail attachment = partSet.get(i);
                String attachmentContent = attachment.getContent();
                if (null != attachmentContent && 0 < attachmentContent.length()) {
                    sbd.append(getBoundaryNextPart()).append(LINE_END);
                    sbd.append("Content-Type: ");
                    sbd.append(attachment.getContentType());
                    sbd.append(LINE_END);
                    sbd.append("Content-Transfer-Encoding: ");
                    sbd.append(attachment.getContentTransferEncoding());
                    sbd.append(LINE_END);
                    if (i != partCount - 1) {
                        sbd.append("Content-Disposition: ");
                        sbd.append(attachment.getContentDisposition());
                        sbd.append(LINE_END);
                    }
                    
                    sbd.append(LINE_END);
                    sbd.append(attachment.getContent());
                    sbd.append(LINE_END);
                }
            }
            
            sbd.append(LINE_END);
            sbd.append(LINE_END);
            // sbd.append(boundaryNextPart).
            // append(LINE_END);
            partSet.clear();
            return sbd.toString();
        }
        
        /**
         * 添加邮件正文单元
         */
        private void addContent() {
            if (null != content) {
                MailPart part = new MailPart();
                part.setContent(toBase64(content));
                part.setContentType("text/plain;charset=\"" + charset + "\"");
                partSet.add(part);
            }
        }
        
        private String listToMailString(List<String> mailAddressList) {
            StringBuilder sbd = new StringBuilder();
            if (null != mailAddressList) {
                int listSize = mailAddressList.size();
                for (int i = 0; i < listSize; i++) {
                    if (0 != i) {
                        sbd.append(";");
                    }
                    sbd.append("<").append(mailAddressList.get(i)).append(">");
                }
            }
            return sbd.toString();
        }
        
        private List<String> getrecipient() {
            List<String> list = new ArrayList<String>();
            list.addAll(to);
            list.addAll(cc);
            list.addAll(bcc);
            return list;
        }
        
        /**
         * 添加一个附件单元
         * 
         * @param filePath
         *            文件路径
         */
        public void addAttachment(String filePath) {
            addAttachment(filePath, null);
        }
        
        public void addTo(String mailAddress) {
            this.to.add(mailAddress);
        }
        
        public void addCc(String mailAddress) {
            this.cc.add(mailAddress);
        }
        
        public void addBcc(String mailAddress) {
            this.bcc.add(mailAddress);
        }
        
        /**
         * 添加一个附件单元
         * 
         * @param filePath
         *            文件路径
         * @param charset
         *            文件编码格式
         */
        public void addAttachment(String filePath, String charset) {
            if (null != filePath && filePath.length() > 0) {
                File file = new File(filePath);
                try {
                    addAttachment(file.getName(), new FileInputStream(file),
                            charset);
                } catch (FileNotFoundException e) {
                    System.out.println("错误:" + e.getMessage());
                    System.exit(1);
                }
            }
        }
        
        /**
         * 添加一个附件单元
         * 
         * @param fileName
         *            文件名
         * @param attachmentStream
         *            文件流
         * @param charset
         *            文件编码格式
         */
        public void addAttachment(String fileName, InputStream attachmentStream,
                String charset) {
            try {
                
                byte[] bs = null;
                if (null != attachmentStream) {
                    int buffSize = 1024;
                    byte[] buff = new byte[buffSize];
                    byte[] temp;
                    bs = new byte[0];
                    int readTotal = 0;
                    while (-1 != (readTotal = attachmentStream.read(buff))) {
                        temp = new byte[bs.length];
                        System.arraycopy(bs, 0, temp, 0, bs.length);
                        bs = new byte[temp.length + readTotal];
                        System.arraycopy(temp, 0, bs, 0, temp.length);
                        System.arraycopy(buff, 0, bs, temp.length, readTotal);
                    }
                }
                
                if (null != bs) {
                    MailPart attachmentPart = new MailPart();
                    charset = null != charset ? charset : Charset.defaultCharset()
                            .name();
                    String contentType = getPartContentType(fileName)
                            + ";name=\"=?" + charset + "?B?" + toBase64(fileName)
                            + "?=\"";
                    attachmentPart.setCharset(charset);
                    attachmentPart.setContentType(contentType);
                    attachmentPart.setContentDisposition("attachment;filename=\"=?"
                            + charset + "?B?" + toBase64(fileName) + "?=\"");
                    attachmentPart.setContent(toBase64(bs));
                    partSet.add(attachmentPart);
                }
                
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                if (null != attachmentStream) {
                    try {
                        attachmentStream.close();
                        attachmentStream = null;
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
                
                Runtime.getRuntime().gc();
                Runtime.getRuntime().runFinalization();
            }
        }
        
        /**
         * 发送邮件
         * 
         * @return 邮件服务器反回的信息
         */
        public String send() {
            
            // 对象申明
            // 当邮件发送完毕后,以下三个对象(Socket、
            // PrintWriter,
            // BufferedReader)需要关闭。
            Socket socket = null;
            PrintWriter pw = null;
            BufferedReader br = null;
            
            try {
                socket = new Socket(host, 25);
                pw = new PrintWriter(socket.getOutputStream());
                br = new BufferedReader(new InputStreamReader(socket
                        .getInputStream()));
                
                StringBuilder infoBuilder = new StringBuilder(
                        "\nServer info: \n------------\n");
                
                // 与服务器建立连接
                pw.write("HELO ".concat(host).concat(LINE_END)); // 连接到邮件服务
                if (!readResponse(pw, br, infoBuilder, "220"))
                    return infoBuilder.toString();
                
                pw.write("AUTH LOGIN".concat(LINE_END)); // 登录
                if (!readResponse(pw, br, infoBuilder, "250"))
                    return infoBuilder.toString();
                
                pw.write(toBase64(user).concat(LINE_END)); // 输入用户名
                if (!readResponse(pw, br, infoBuilder, "334"))
                    return infoBuilder.toString();
                
                pw.write(toBase64(password).concat(LINE_END)); // 输入密码
                if (!readResponse(pw, br, infoBuilder, "334"))
                    return infoBuilder.toString();
                
                pw.write("MAIL FROM:<" + from + ">" + LINE_END); // 发件人邮箱地址
                if (!readResponse(pw, br, infoBuilder, "235"))
                    return infoBuilder.toString();
                
                List<String> recipientList = getrecipient();
                // 收件邮箱地址
                for (int i = 0; i < recipientList.size(); i++) {
                    pw.write("RCPT TO:<" + recipientList.get(i) + ">" + LINE_END);
                    if (!readResponse(pw, br, infoBuilder, "250"))
                        return infoBuilder.toString();
                }
                // System.out.println(
                // getAllSendAddress());
                
                pw.write("DATA" + LINE_END); // 开始输入邮件
                if (!readResponse(pw, br, infoBuilder, "250"))
                    return infoBuilder.toString();
                
                flush(pw);
                
                // 设置邮件头信息
                StringBuffer sbf = new StringBuffer("From: <" + from + ">"
                        + LINE_END); // 发件人
                sbf.append("To: " + listToMailString(to) + LINE_END);// 收件人
                sbf.append("Cc: " + listToMailString(cc) + LINE_END);// 收件人
                sbf.append("Bcc: " + listToMailString(bcc) + LINE_END);// 收件人
                sbf.append("Subject: " + subject + LINE_END);// 邮件主题
                SimpleDateFormat sdf = new SimpleDateFormat(simpleDatePattern);
                sbf.append("Date: ").append(sdf.format(new Date()));
                sbf.append(LINE_END); // 发送时间
                sbf.append("Content-Type: ");
                sbf.append(contentType);
                sbf.append(";");
                sbf.append("boundary=\"");
                sbf.append(boundary).append("\""); // 邮件类型设置
                sbf.append(LINE_END);
                sbf.append("This is a multi-part message in MIME format.");
                sbf.append(LINE_END);
                
                // 添加邮件正文单元
                addContent();
                
                // 合并所有单元,正文和附件。
                sbf.append(getAllParts());
                
                // 发送
                sbf.append(LINE_END).append(".").append(LINE_END);
                pw.write(sbf.toString());
                readResponse(pw, br, infoBuilder, "354");
                flush(pw);
                
                // QUIT退出
                pw.write("QUIT" + LINE_END);
                if (!readResponse(pw, br, infoBuilder, "250"))
                    return infoBuilder.toString();
                flush(pw);
                
                return infoBuilder.toString();
            } catch (Exception e) {
                e.printStackTrace();
                return "Exception:>" + e.getMessage();
            } finally {
                // 释放资源
                try {
                    if (null != socket)
                        socket.close();
                    if (null != pw)
                        pw.close();
                    if (null != br)
                        br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                
                // this.to.clear();
                // this.cc.clear();
                // this.bcc.clear();
                this.partSet.clear();
            }
            
        }
        
        /**
         * 将SMTP命令发送到邮件服务器
         * 
         * @param pw
         *            邮件服务器输入流
         */
        private void flush(PrintWriter pw) {
            if (!isAllowReadSocketInfo) {
                pw.flush();
            }
        }
        
        /**
         * 读取邮件服务器的响应信息
         * 
         * @param pw
         *            邮件服务器输入流
         * @param br
         *            邮件服务器输出流
         * @param infoBuilder
         *            用来存放服务器响应信息的字符串缓冲
         * @param msgCode
         * @return
         * @throws IOException
         */
        private boolean readResponse(PrintWriter pw, BufferedReader br,
                StringBuilder infoBuilder, String msgCode) throws IOException {
            if (isAllowReadSocketInfo) {
                pw.flush();
                String message = br.readLine();
                infoBuilder.append("SERVER:/>");
                infoBuilder.append(message).append(LINE_END);
                if (null == message || 0 > message.indexOf(msgCode)) {
                    System.out.println("ERROR: " + message);
                    pw.write("QUIT".concat(LINE_END));
                    pw.flush();
                    return false;
                }
                if (isDebug) {
                    System.out.println("DEBUG:/>" + msgCode + "/" + message);
                }
            }
            return true;
        }
        
        public String getBoundaryNextPart() {
            return boundaryNextPart;
        }
        
        public void setBoundaryNextPart(String boundaryNextPart) {
            this.boundaryNextPart = boundaryNextPart;
        }
        
        public String getDefaultAttachmentContentType() {
            return defaultAttachmentContentType;
        }
        
        public void setDefaultAttachmentContentType(
                String defaultAttachmentContentType) {
            this.defaultAttachmentContentType = defaultAttachmentContentType;
        }
        
        public String getHost() {
            return host;
        }
        
        public void setHost(String host) {
            this.host = host;
        }
        
        public String getFrom() {
            return from;
        }
        
        public void setFrom(String from) {
            this.from = from;
        }
        
        public List<String> getTo() {
            return to;
        }
        
        public void setTo(List<String> to) {
            this.to = to;
        }
        
        public String getSubject() {
            return subject;
        }
        
        public void setSubject(String subject) {
            this.subject = subject;
        }
        
        public String getUser() {
            return user;
        }
        
        public void setUser(String user) {
            this.user = user;
        }
        
        public String getPassword() {
            return password;
        }
        
        public void setPassword(String password) {
            this.password = password;
        }
        
        public String getContentType() {
            return contentType;
        }
        
        public void setContentType(String contentType) {
            this.contentType = contentType;
        }
        
        public String getBoundary() {
            return boundary;
        }
        
        public void setBoundary(String boundary) {
            this.boundary = boundary;
        }
        
        public String getContentTransferEncoding() {
            return contentTransferEncoding;
        }
        
        public void setContentTransferEncoding(String contentTransferEncoding) {
            this.contentTransferEncoding = contentTransferEncoding;
        }
        
        public String getCharset() {
            return charset;
        }
        
        public void setCharset(String charset) {
            this.charset = charset;
        }
        
        public String getContentDisposition() {
            return contentDisposition;
        }
        
        public void setContentDisposition(String contentDisposition) {
            this.contentDisposition = contentDisposition;
        }
        
        public String getSimpleDatePattern() {
            return simpleDatePattern;
        }
        
        public void setSimpleDatePattern(String simpleDatePattern) {
            this.simpleDatePattern = simpleDatePattern;
        }
        
        public String getContent() {
            return content;
        }
        
        public void setContent(String content) {
            this.content = content;
        }
        
        public boolean isAllowReadSocketInfo() {
            return isAllowReadSocketInfo;
        }
        
        public void setAllowReadSocketInfo(boolean isAllowReadSocketInfo) {
            this.isAllowReadSocketInfo = isAllowReadSocketInfo;
        }
        
        /**
         * @param args
         */
        public static void main(String[] args) {
            // 应用示例:线程化发送邮件
            new Thread() {
                @Override
                public void run() {
                    System.out.println("SENDER-" + this.getId() + ":/>"
                            + "开始发送邮件...");
                    
                    // 创建邮件对象
                    Mail mail = new Mail();
                    mail.setHost("smtp.163.com"); // 邮件服务器地址
                    mail.setFrom("yanyuanyuan101@163.com"); // 发件人邮箱
                    mail.addTo("315905059@qq.com"); // 收件人邮箱
    //                mail.addTo("233010952@qq.com"); // 收件人邮箱
                    mail.addCc("test@m1.com");
                    mail.addBcc("test@m2.com");
                    mail.setSubject("CC Test Mail!!"); // 邮件主题
                    mail.setUser("yanyuanyuan101@163.com"); // 用户名
                    mail.setPassword("100982"); // 密码       
                    mail.setContent("这是一个测试,请不要回复!"); // 邮件正文
                    mail.addAttachment("/utf8中.txt"); // 添加附件
    //                for(int i=1;i<14;i++){
    //                mail.addAttachment("d:\\mg"+i+".jpg"); // 添加附件
    //                }
                    // mail.addAttachment(
                    // "e:/test.htm"); //
                    // 添加附件
                    
                    System.out.println(mail.send()); // 发送
                   
                    System.out.println("SENDER-" + this.getId() + ":/>"
                            + "邮件已发送完毕!");
                }
            }.start();
            
        }
        
    }
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  • 原文地址:https://www.cnblogs.com/shengkejava/p/2635725.html
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