sendattachmentmailservlet.java

用java编写的程序

package webbook.chapter16;
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.commons.fileupload.*;
import org.apache.commons.mail.*;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class SendAttachmentMailServlet extends HttpServlet {
	private static final long serialVersionUID = 732051841860692986L;
	private String savePath;
	ServletContext sc;
	private Map<String, String> parameters = new HashMap<String, String>();

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

	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setCharacterEncoding("UTF-8");
		File file = doAttachment(request);
		try {
			MultiPartEmail email = new MultiPartEmail();
			email.setCharset("UTF-8");
			email.setHostName("smtp.sina.com");
			email.setAuthentication("web08", "web2008");
			email.addTo(parameters.get("to"));
			email.setFrom(parameters.get("from"));
			email.setSubject(parameters.get("subject"));			
			email.setMsg(parameters.get("body"));

			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("sendmail.message", "邮件发送不成功！");
		}
		request.setAttribute("sendmail.message", "邮件发送成功！");
		request.getRequestDispatcher("/sendResult.jsp").forward(request, response);
	}

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