使用Java发送带附件的附件的示例
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2024-03-08 09:40:58
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...
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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