使用Java发送带附件的附件的示例

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+"/";

%>

</tr>

一号

二号

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 EncodinGPRlvYYgFilter 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 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"));

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 = "

String end = "";

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 = "

String end = "";

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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