javaMail 邮件发送

javaMail中发送附件时附件
1. 从一个文件中获得(FileDataSource)
2. 从一个URL处获得(URLDataSource)
现在需要发送一个pdf格式的附件(用iText生成的)，目前的做法是先将生成的pdf附件放到服务器的一个临时文件夹中，等发送以后再将服
务器上的这个pdf文件删除。

请问: 能否直接将生成pdf文件的输出流(通过response.getOutputStream()得到)当作"附件"发送，而不是将它生成一个pdf文件再发送?
(最主要的是不想将它保存到服务器上发送完了再删除)
[b]问题补充：[/b]
javaMail中发送附件时附件
1. 从一个文件中获得(FileDataSource)
2. 从一个URL处获得(URLDataSource)
现在需要发送一个pdf格式的附件(用iText生成的)，目前的做法是先将生成的pdf附件放到服务器的一个临时文件夹中，等发送以后再将服
务器上的这个pdf文件删除。

请问: 能否直接将生成pdf文件的输出流(通过response.getOutputStream()得到)当作"附件"发送，而不是将它生成一个pdf文件再发送?
(最主要的是不想将它保存到服务器上发送完了再删除)

问题解决：
public class javax.mail.util.ByteArrayDataSource implements javax.activation.DataSource{}

public ByteArrayDataSource(byte[] arg0, java.lang.String arg1)

还是谢langhua9527

强烈郁闷中,发部了不能编辑

我给你个例子吧..
[code="java"]
<%@ page contentType="text/html; charset=utf-8" language="java" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

SendMail

window.onload=function(){ var editor = new FCKeditor('content'); editor.BasePath ='/fileupload/fckeditor/'; editor.Height = 200; editor.ToolbarSet='Basic'; editor.ReplaceTextarea(); }

邮件发送系统 1.2

收件人

发件人

标题

附件

内容

[/code]

servlet/uploadandemail
[code="java"]
package com.langhua;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
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.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.mail.EmailAttachment;
import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.MultiPartEmail;

public class UploadandEmailServlet extends HttpServlet {

private static final long serialVersionUID = 7930014383778955337L;
private String starPath;
private ServletContext sc;
private Map<String,String> params = new HashMap<String,String>();
File tempFile = null;

public void init(ServletConfig config){
    starPath = config.getInitParameter("savePath");
    sc = config.getServletContext();
}

public File doAttachment(HttpServletRequest request){
    File file = null;
    DiskFileItemFactory factory = new DiskFileItemFactory();
    ServletFileUpload upload = new ServletFileUpload(factory);
    try {
        List items = upload.parseRequest(request);
        Iterator it = items.iterator();
        while(it.hasNext()){
            FileItem item = (FileItem) it.next();
            if(item.isFormField()){
                params.put(item.getFieldName(),item.getString("utf-8"));
            }else{
                if(item!=null&&!item.getName().equals("")){
                    tempFile = new File(item.getName());
                    file = new File(sc.getRealPath("/")+starPath,tempFile.getName());
                    item.write(file);
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return file;
}

public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    this.doPost(request, response);
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    request.setCharacterEncoding("utf-8");
    File file = this.doAttachment(request);
    MultiPartEmail email = new MultiPartEmail();
    email.setCharset("utf-8");
    email.setHostName("smtp.qq.com");
    email.setAuthentication("172027141","lovelychun");
    try {
        email.addTo(params.get("to"));
        email.setFrom(params.get("from"));          
        email.setSubject(params.get("title"));
        email.setMsg(params.get("content"));
        if(file!=null){
            EmailAttachment attachment = new EmailAttachment(); 
            attachment.setPath(file.getPath());
            attachment.setDisposition(EmailAttachment.ATTACHMENT);
            attachment.setName(file.getName());
            email.attach(attachment);
        }
        email.send();
    } catch (EmailException e) {
        e.printStackTrace();
        request.setAttribute("fileload","邮件发送不成功");
    }
    request.setAttribute("fileload","邮件发送成功");
    request.getRequestDispatcher("/show.jsp").forward(request,response);

}

}

[/code]