JSP實現傳送帶有附件的郵件程式碼

阿新 • • 發佈：2019-02-05

SendAttanchment.jsp檔案--------------------------------測試檔案

<%@ 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="

[email protected]"><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

完成郵件的以下一些操作：

1) 設定郵箱名,密碼

2) 設定郵件的傳送者，接收者，主題，正文，以及附件

3) 實現傳送功能

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) 解析從JSP傳來的引數請求（郵件接收者，傳送者，正文，附件）

2) 此處實現新增附件的方法是：先將附件上傳至server的工程目錄下，然後attach到郵件，然後刪除上傳到server上的檔案

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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