JSP实现发送带有附件的邮件代码 -

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2010-02 ( 14)
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JSP实现发送带有附件的邮件代码

JSP Servlet Apache HTML

SendAttanchment.jsp文件--------------------------------测试文件

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>

<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'SendAttanchment.jsp' starting page</title>
</head>

<body>
<div align="center">
User JavaMail to send emails:<br>
<form action="servlet/SendAttachment" method="post" ENCTYPE="multipart/form-data">
Recipient: <input type="text" size="40" name="to"><br><br>
Sender: <input type="text" size="40" name="from" value="test@sina.com"><br><br>
Subject:<input type="text" size="40" name="subject" /><br><br>
Attach: <input type="file" name="file" size="28" /><br><br>
Content:<textarea rows="6" cols="38" name="content" />
<input type="submit" value="Send" />
<input type="reset" value="Cancle" />
</form>
</div>
</body>
</html>

AttachmentSender.java

完成邮件的以下一些操作：

1) 设置邮箱名,密码

2) 设置邮件的发送者，接收者，主题，正文，以及附件

3) 实现发送功能

package beans;

import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class AttachmentSender {
private MimeMessage message;
private Properties props;
private Session session;
private MimeMultipart mp;
private String name = "";
private String password = "";

/**
* complete the initialization
* @param host
* @param name
* @param password
*/
public AttachmentSender(String host, String name, String password){
this.name = name;
this.password = password;
props = System.getProperties();
//set the SMTP host
props.put("mail.smtp.host", host);
//set SMTP authorization
props.put("mail.smtp.auth", "true");
//get the mail session
MyAuthenticator auth = new MyAuthenticator(name,password);
session = Session.getDefaultInstance(props,auth);
//create MIME mail object
message = new MimeMessage(session);
mp = new MimeMultipart();
}

/**
* set mail sender
* @param from
*/
public void setFrom(String from){
try {
message.setFrom(new InternetAddress(from));
} catch (AddressException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

/**
* set mail recipient
* @param to
*/
public void setTo(String to){
try {
message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
} catch (AddressException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

/**
* set mail subject
* @param subject
*/
public void setSubject(String subject){
try {
message.setSubject(subject);
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

/**
* set the mail content
* @param content
*/
public void setContent(String content){
try{
BodyPart bp = new MimeBodyPart();
bp.setContent(content,"text/html");
mp.addBodyPart(bp);
}catch(Exception e){
e.printStackTrace();
}
}

/**
* attach the file
* @param filename
*/
public void addAttachMent(String filename){
try{
BodyPart bp = new MimeBodyPart();
FileDataSource fileds = new FileDataSource(filename);
bp.setDataHandler(new DataHandler(fileds));
bp.setFileName(fileds.getName());
mp.addBodyPart(bp);
}catch(Exception e){
e.printStackTrace();
}
}

/**
* send mail
* @return
*/
public boolean send(){
try{
message.setContent(mp);
message.saveChanges();
//create SMTP sender object
Transport transport = session.getTransport("smtp");
//get the connection with server
transport.connect((String) props.get("mail.smtp.host"),name,password);
//send the mail via server
transport.sendMessage(message, message.getRecipients(Message.RecipientType.TO));
transport.close();
return true;
}catch(NoSuchProviderException e){
e.printStackTrace();
return false;
}catch (MessagingException e){
e.printStackTrace();
return false;
}
}
}

SendAttachment.java

主要完成以下操作：

1) 解析从JSP传来的参数请求（邮件接收者，发送者，正文，附件）

2) 此处实现添加附件的方法是：先将附件上传至server的工程目录下，然后attach到邮件，然后删除上传到server上的文件

package servlets;

import java.io.IOException;
import java.io.PrintWriter;

import java.io.File;
import java.util.Iterator;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.*;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import beans.AttachmentSender;

public class SendAttachment extends HttpServlet {

/**
* Constructor of the object.
*/
public SendAttachment() {
super();
}

/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}

/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the GET method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}

/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

response.setContentType("text/html");
PrintWriter out = response.getWriter();

//set the smtp address of sina
String host = "smtp.sina.com";
//set mailbox accountName
String accountName = "test";
//set mailbox password
String password = "pass";
//attachment
File uploadedFile = null;
//sender's address
String from = "";
//recipient's address
String to = "";
//mail subject
String subject = "";
//mail content
String content = "";

//upload the attachment to the server first
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if(isMultipart){
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
Iterator items;
try{
items = upload.parseRequest(request).iterator();
while(items.hasNext()){
FileItem item = (FileItem) items.next();
if(!item.isFormField()){
//get the name of the upload file
String name = item.getName();
String fileName = name.substring(name.lastIndexOf('\\')+1,name.length());
String path = request.getRealPath(fileName);
//upload the file
uploadedFile = new File(path);
item.write(uploadedFile);
}
else if(item.isFormField()){
//get the parameter from the form
if(item.getFieldName().equals("from")){
from = item.getString();
}
else if(item.getFieldName().equals("to")){
to = item.getString();
}
else if(item.getFieldName().equals("subject")){
subject = item.getString();
}
else if(item.getFieldName().equals("content")){
content = item.getString();
}
}
}
}catch(Exception e){
e.printStackTrace();
}
}
//set mail info
AttachmentSender sender = new AttachmentSender(host,accountName,password);
sender.setFrom(from);
sender.setSubject(subject);
sender.setTo(to);
sender.setContent(content);
if(uploadedFile != null){
String attachment = request.getRealPath(uploadedFile.getName());
sender.addAttachMent(attachment);
}

//print the result
if(sender.send()){
out.print("Send mail successfully!");
}
else{
out.print("Send mail failed!");
}
//delete the file on the server after send the mail
if(uploadedFile.exists())
uploadedFile.delete();
}

/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}

}

MyAuthenticator.java

package beans;

import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;

public class MyAuthenticator extends Authenticator{
String name;
String password;

public MyAuthenticator(String name, String password){
this.name = name;
this.password = password;
getPasswordAuthentication();
}
protected PasswordAuthentication getPasswordAuthentication(){
return new PasswordAuthentication(name,password);
}
}

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