sendmail.java

email java实现 个别包需要先下载

package servlets;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
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.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import beans.Mailbeans;

public class SendMail extends HttpServlet
{

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException 
	{
		String host = "smtp.163.com";
		String accountName = "xgj_an";
		String password = "354172";
		File uploadedFile = null;
		String from = "";
		String to = "";
		String subject = "";
		String content = "";
		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())
					{
						String name = item.getName();
						String fileName = name.substring(name.lastIndexOf('\\')+1,name.length());
						String path = request.getRealPath(fileName);
						uploadedFile = new File(path);
						item.write(uploadedFile);
					}else if(item.isFormField())
					{
						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();
			}
		}
		Mailbeans mail = new Mailbeans(host,accountName,password);
		mail.setFrom(from);
		mail.setTo(to);
		mail.setSubject(subject);
		mail.setContent(content);
		if(uploadedFile != null)
		{
			String attachement = request.getRealPath(uploadedFile.getName());
			mail.addAttachMent(attachement);
		}
		response.setContentType("text/html");
		response.setCharacterEncoding("gbk");

		PrintWriter out = response.getWriter();
		if(mail.send())
			out.print("<font size='1'>邮件发送成功！OK</font><br>");
		else
			out.print("<font size='1'>邮件发送失败！ERROR</font><br>");
		if(uploadedFile.exists())
			uploadedFile.delete();
	}
}