新建一個工具類:html
Mail.javajava
該類的主要關鍵點是:一、設置系統屬性。也就是你是用什麼協議來進行郵件發送的,郵件協議有不少在種,好比impt,smpt,prop等協議,服務器
我如今測試用的是smpt協議,smpt協議裏也分爲不少種,覺得有不一樣的郵箱QQ,126,新浪等,因此就有不一樣的smpt系統屬性了(注:這些session
均可以再網上查到),我用的協議是smpt.qq.com,經過property將它存到map集合裏面:props.put("host","smpt.qq.com")eclipse
二、準備獲取郵件回話對象,經過mail.jar包中Session.getDefaultInstance()來獲取回話。工具
三、準備建立MIME郵件對象,jar包自帶的MimeMessage(session)方法測試
四、設置smtp身份認證:props.put("mail.smtp.auth", "true");ui
五、定義郵件主題:mimeMsg.setSubject(mailSubject);六、htm
六、定義郵件內容:bp.setContent("" + mailBody, "text/html;charset=GBK");對象
七、設置發信人:mimeMsg.setFrom(new InternetAddress(from));
八、定義收信人:mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
九、定義抄送人:mimeMsg.setRecipients(Message.RecipientType.CC, (Address[]) InternetAddress .parse(copyto));
如下是源碼:
package com.util; import java.util.Properties; import javax.mail.Address; import javax.mail.BodyPart; import javax.mail.Message; import javax.mail.Multipart; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeBodyPart; import javax.mail.internet.MimeMessage; import javax.mail.internet.MimeMultipart; public class Mail { private MimeMessage mimeMsg; private Session session; private Properties props; private Multipart mp; private static String smtp = "smtp.qq.com";// smtp服務器 private static String from = "你的郵箱帳號@qq.com";// 郵件顯示名稱 private static String copyto = "";// 抄送人郵件地址 private static String subject = "找回密碼";// 郵件標題 private static String username = "郵箱帳號";// 發件人真實的帳戶名 private static String password = "密碼";// 發件人密碼 public Mail(String smtp) { setSmtpHost(smtp); createMimeMessage(); } public void setSmtpHost(String hostName) { System.out.println("設置系統屬性:mail.smtp.host=" + hostName); if (props == null) { props = System.getProperties(); } props.put("mail.smtp.host", hostName); } public boolean createMimeMessage() { try { System.out.println("準備獲取郵件會話對象!"); session = Session.getDefaultInstance(props, null); } catch (Exception e) { System.out.println("獲取郵件會話錯誤!" + e); return false; } System.out.println("準備建立MIME郵件對象!"); try { mimeMsg = new MimeMessage(session); mp = new MimeMultipart(); return true; } catch (Exception e) { System.out.println("建立MIME郵件對象失敗!" + e); return false; } } /*定義SMTP是否須要驗證*/ public void setNeedAuth(boolean need) { System.out.println("設置smtp身份認證:mail.smtp.auth = " + need); if (props == null) props = System.getProperties(); if (need) { props.put("mail.smtp.auth", "true"); } else { props.put("mail.smtp.auth", "false"); } } public void setNamePass(String name, String pass) { username = name; password = pass; } /*定義郵件主題*/ public boolean setSubject(String mailSubject) { System.out.println("定義郵件主題!"); try { mimeMsg.setSubject(mailSubject); return true; } catch (Exception e) { System.err.println("定義郵件主題發生錯誤!"); return false; } } /*定義郵件正文*/ public boolean setBody(String mailBody) { try { BodyPart bp = new MimeBodyPart(); bp.setContent("" + mailBody, "text/html;charset=GBK"); mp.addBodyPart(bp); return true; } catch (Exception e) { System.err.println("定義郵件正文時發生錯誤!" + e); return false; } } /*設置發信人*/ public boolean setFrom(String from) { System.out.println("設置發信人!"); try { mimeMsg.setFrom(new InternetAddress(from)); //發信人 return true; } catch (Exception e) { return false; } } /*定義收信人*/ public boolean setTo(String to) { if (to == null) return false; System.out.println("定義收信人!"); try { mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to)); return true; } catch (Exception e) { return false; } } /*定義抄送人*/ public boolean setCopyTo(String copyto) { if (copyto == null) return false; try { mimeMsg.setRecipients(Message.RecipientType.CC, (Address[]) InternetAddress .parse(copyto)); return true; } catch (Exception e) { return false; } } /*發送郵件模塊*/ public boolean sendOut() { try { mimeMsg.setContent(mp); mimeMsg.saveChanges(); System.out.println("郵件發送中...."); Session mailSession = Session.getInstance(props, null); Transport transport = mailSession.getTransport("smtp"); transport.connect((String) props.get("mail.smtp.host"), username, password); transport.sendMessage(mimeMsg, mimeMsg .getRecipients(Message.RecipientType.TO)); System.out.println("發送成功!"); transport.close(); return true; } catch (Exception e) { System.err.println("郵件失敗!" + e); return false; } } /*調用sendOut方法完成發送*/ public static boolean sendAndCc(String to,String content) { Mail theMail = new Mail(smtp); theMail.setNeedAuth(true); // 驗證 if (!theMail.setSubject(subject)) return false; if (!theMail.setBody(content)) return false; if (!theMail.setTo(to)) return false; if (!theMail.setCopyTo(copyto)) return false; if (!theMail.setFrom(from)) return false; theMail.setNamePass(username, password); if (!theMail.sendOut()) return false; return true; } // public static void main(String[] args) { // String smtp = "smtp.qq.com";// smtp服務器 // String from = "郵箱帳號@.qq.com";// 郵件顯示名稱 // String to = "收件人帳號@qq.com";// 收件人的郵件地址,必須是真實地址 // String copyto = "";// 抄送人郵件地址 // String subject = "測試郵件";// 郵件標題 // String content = "你好!這是測試郵件,請不要回復";// 郵件內容 // String username = "你的郵箱帳號";// 發件人真實的帳戶名 // String password = "密碼";// 發件人密碼 // Mail.sendAndCc(smtp, from, to, copyto, subject, content, username, password); // } }
以上代碼,通過測試,能夠運行成功。注意:
Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/mail/util/LineInputStream
當出現以上錯誤時,恭喜您已經離接收郵件不遠了,不然請您解決好全部的異常後再來看這個帖子。
javax.mail和javax.activation這兩個包已經在javaEE5當中屬於基礎包了,就是JDK中自帶了已經,可是裏面的方法與如今外面的mail.jar和activation.jar有一些出入,因此初學者在直接copy別人代碼的時候每每會出現上面的錯誤。
廢話很少說下面是解決方法
進到
X:\Program Files\MyEclipse 6.5\myeclipse\eclipse\plugins\com.genuitec.eclipse.j2eedt.core_6.5.0.zmyeclipse650200806\data\libraryset\EE_5
這個路徑裏,能夠看到javaee.jar,用rar把這個文件打開,而後進到javax文件夾裏,刪除mail.jar和activation.jar(個人javaee.jar裏,這兩個東西是文件夾,總之刪掉就OK,不過要注意備份一下)