使用Java发送带附件的附件的示例
这里使用的是JavaMail技术,前台使用了fckeditor做邮件美化,由于只是示例,后台发送时只是将邮件保存在本地,但是可以查看,如果需要实际发送,请参考我的其他博客文章,我写了很多关于邮件发送的示例!
JSP页面页面除了引用fckeditor外,要注意我们是需要发送附件的:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>发送邮件</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <script type="text/javascript" src="fckeditor/fckeditor.js"></script> <script type="text/javascript"> window.onload=function(){ var oFCKeditor = new FCKeditor( 'content' ) ; //编译器基本路径 oFCKeditor.BasePath = "/pro_04/fckeditor/"; //高度 oFCKeditor.Width=800; //宽度 oFCKeditor.Height=300; //工具条集合名称(Default,Basic或自己制定,关于FCK的使用,博客内有专门文章) //具体的配置可以将默认显示出来然后到FCK目录里的fckconfig.js里 //FCKConfig.ToolbarSets["Default"]数组中去除不要的功能一共63个功能属性 //oFCKeditor.ToolbarSet="Basic"; oFCKeditor.ReplaceTextarea() ; } </script> </head> <body> <!-- 注意表单格式,这里需要上传附件 --> <form action="SendMailServlet" method="post" enctype="multipart/form-data"> <table> <tr> <td>收件人:</td> <td><input type="text" name="to" /></td> </tr> <tr> <td>抄送:</td> <td><input type="text" name="copy" /></td> </tr> <tr> <td>主题:</td> <td><input type="text" name="title" /></td> </tr> <tr> <td>信件内容:</td> <td><textarea rows="10" cols="20" name="content" id="content"></textarea></td> </tr> <tr> <td>附件:</td> <td><input type='file' name='ufile' /></td> </tr> <tr> <td>背景音乐:</td> <td><input type='file' name='umusic' /></td> </tr> <tr> <td>背景图片:</td><!-- 背景图片我们后台自己准备 --> <td> <select name="bgimg"> <option value="1">一号</option> <option value="2">二号</option> </select> </td> </tr> <tr align="right"> <td colspan="2"><input type="submit" value="发 送"></td> </tr> </table> </form> </body> </html>
为了防止乱码,会经过一个过滤器:
package org.filter; import java.io.IOException; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; /** * 过滤器防止乱码 * @说明 * @author cuisuqiang * @version 1.0 * @since */ public class EncodingFilter implements Filter { public void destroy() { } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); chain.doFilter(request, response); } public void init(FilterConfig arg0) throws ServletException { } }
然后到Servlet处理附件和信息,这里就不做异常处理了,出错直接报错:
package org.servlet; import java.io.*; import java.util.*; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.entity.MailModel; import org.mail.SendMail; /** * 接收表单,处理附件,组装邮件对象,并调用发送接口 * @说明 在C盘创建临时文件 * @author cuisuqiang * @version 1.0 * @since */ @SuppressWarnings("serial") public class SendMailServlet extends HttpServlet { @SuppressWarnings( { "unchecked", "deprecation" }) @Override protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 建立磁盘工厂 FileItemFactory factory = new DiskFileItemFactory(); // 表单域 ServletFileUpload upload = new ServletFileUpload(factory); List<FileItem> items = null; String bgimg = "1"; // 默认是第一个背景图片 try { items = upload.parseRequest(request); } catch (FileUploadException e) { e.printStackTrace(); } MailModel mail = new MailModel(); InputStream is = null; for (FileItem item : items) { if (!item.isFormField()) { // 如果是附件 if (item.getSize() > 0) { is = item.getInputStream(); String filename = ""; if (item.getName().indexOf("\\") == -1) { filename = "c:\\tmp\\" + item.getName(); } else { filename = "c:\\tmp\\" + item.getName().substring(item.getName().lastIndexOf("\\")); } if (is.markSupported()) { System.out.println("没有上传文件或文件已经删除"); } else { File file = new File(filename); FileOutputStream fos = new FileOutputStream(file); // 建立输出流 byte[] buffer = new byte[8192]; // 每次读8K字节,大文件上传没有问题 int count = 0; while ((count = is.read(buffer)) > 0) { // 循环写入到硬盘 fos.write(buffer, 0, count); } fos.close(); // 关闭输入输出流 is.close(); if (item.getFieldName().equals("ufile")) { mail.setFilePath(filename); } else if (item.getFieldName().equals("umusic")) { mail.setMusicPath(filename); } } } } else { // 处理文本信息 if (item.getFieldName().equals("title")) { mail.setTitle(item.getString("UTF-8")); } else if (item.getFieldName().equals("content")) { mail.setContext(item.getString("UTF-8")); } else if (item.getFieldName().equals("to")) { mail.setTo(item.getString("UTF-8")); } else if (item.getFieldName().equals("copy")) { mail.setCopy(item.getString("UTF-8")); } else if (item.getFieldName().equals("bgimg")) { bgimg = item.getString("UTF-8"); } } } String bgPath = request.getRealPath("/") + "\\images\\bg" + bgimg + ".jpg"; mail.setBgPath(bgPath); try { SendMail.sendMail(mail); } catch (Exception e) { e.printStackTrace(); } response.sendRedirect(request.getContextPath() + "/sendmail.jsp"); } }
这里也没有验证,接收到信息后组装一个邮件实体对象,传递到发送接口中发送:
实体,我就不写get和set方法了:
package org.entity; /** * 一封邮件的对象 * @说明 * @author cuisuqiang * @version 1.0 * @since */ public class MailModel { /** * 主键 */ private int id; /** * 邮件标题 */ private String title; /** * 发送给谁 */ private String to; /** * 背景图片地址 */ private String bgPath; /** * 抄送给谁 */ private String copy; /** * 邮件内容 */ private String context; /** * 附件地址 */ private String filePath; /** * 背景音乐地址 */ private String musicPath; }
然后我们来看看核心处理类:
package org.mail; import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import java.util.Date; import java.util.Properties; import javax.activation.DataHandler; import javax.activation.DataSource; import javax.activation.FileDataSource; import javax.mail.Message; import javax.mail.Session; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeBodyPart; import javax.mail.internet.MimeMessage; import javax.mail.internet.MimeMultipart; import javax.mail.internet.MimeUtility; import org.entity.MailModel; /** * 发送一封邮件 * @说明 注意这里并没有实际发送而是保存在了C盘临时文件中,真是发送的话,请参考我的博客 * @author cuisuqiang * @version 1.0 * @since */ public class SendMail { public static void sendMail(MailModel mail) throws Exception { Properties props = new Properties(); props.put("mail.smtp.auth", "true"); Session session = Session.getInstance(props); Message message = new MimeMessage(session); InternetAddress from = new InternetAddress(); from.setPersonal(MimeUtility.encodeText("风中落叶<cuisuqiang@163.com>")); message.setFrom(from); InternetAddress to = new InternetAddress(mail.getTo()); message.setRecipient(Message.RecipientType.TO, to); // 是否抄送 if (null != mail.getCopy() && !"".equals(mail.getCopy())) { InternetAddress copy = new InternetAddress(mail.getCopy()); message.setRecipient(Message.RecipientType.CC, copy); } message.setSubject(MimeUtility.encodeText(mail.getTitle())); message.setSentDate(new Date()); // 指定为混合关系 MimeMultipart msgMultipart = new MimeMultipart("mixed"); message.setContent(msgMultipart); MimeBodyPart content = new MimeBodyPart(); msgMultipart.addBodyPart(content); // 依赖关系 MimeMultipart bodyMultipart = new MimeMultipart("related"); content.setContent(bodyMultipart); MimeBodyPart htmlPart = new MimeBodyPart(); // 组装的顺序非常重要 bodyMultipart.addBodyPart(htmlPart); MimeBodyPart in_bg = new MimeBodyPart(); bodyMultipart.addBodyPart(in_bg); DataSource bgsou = new FileDataSource(mail.getBgPath()); DataHandler bghd = new DataHandler(bgsou); in_bg.setDataHandler(bghd); in_bg.setHeader("Content-Location", "bg.jpg"); // 是否使用了背景音乐 if (null == mail.getMusicPath() || "".equals(mail.getMusicPath())) { String start = "<html><body background='bg.jpg'>"; String end = "</body></html>"; htmlPart.setContent(start + mail.getContext() + end,"text/html;charset=UTF-8"); } else { MimeBodyPart in_Part = new MimeBodyPart(); bodyMultipart.addBodyPart(in_Part); DataSource gifds = new FileDataSource(mail.getMusicPath()); DataHandler gifdh = new DataHandler(gifds); in_Part.setDataHandler(gifdh); in_Part.setHeader("Content-Location", "bg.mp3"); String start = "<html><head><bgsound src='bg.mp3' loop='-1'></head><body background='bg.jpg'>"; String end = "</body></html>"; htmlPart.setContent(start + mail.getContext() + end,"text/html;charset=UTF-8"); } // 组装附件 if (null != mail.getFilePath() && !"".equals(mail.getFilePath())) { MimeBodyPart file = new MimeBodyPart(); FileDataSource file_datasource = new FileDataSource(mail .getFilePath()); DataHandler dh = new DataHandler(file_datasource); file.setDataHandler(dh); file.setFileName(MimeUtility.encodeText(dh.getName())); msgMultipart.addBodyPart(file); } message.saveChanges(); // 保存邮件 OutputStream ips = new FileOutputStream("C:\\tmp\\test.eml"); message.writeTo(ips); ips.close(); System.out.println("------------发送完毕------------"); // 删除临时文件 if (null != mail.getMusicPath() && !"".equals(mail.getMusicPath())) { File file = new File(mail.getMusicPath()); file.delete(); } if (null != mail.getFilePath() && !"".equals(mail.getFilePath())) { File file = new File(mail.getFilePath()); file.delete(); } } }
我们把邮件发送了C盘,可以到C盘查看,如果需要实际发送,可以参考我的其他博客,有专门说明!
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