利用JavaMail发送邮件的Java类

利用JavaMail发送邮件需要用到mail.jar和activtion.jar两个包。

该类实现了较完整的邮件发送成果，包罗以HTML名目发送，添加附件和抄送人。下面是详细的代码：

Mail.java：

package cn.cgw.util.mail;  
      
import java.util.Properties;  
      
import javax.activation.DataHandler;  
import javax.activation.FileDataSource;  
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; //MIME邮件工具   
    private Session session; //邮件会话工具   
    private Properties props; //系统属性   
    private boolean needAuth = false; //smtp是否需要认证   
    //smtp认证用户名和暗码   
    private String username;   
    private String password;   
    private Multipart mp; //Multipart工具,邮件内容,标题,附件等内容均添加到个中后再生成MimeMessage工具   
           
    /** 
     * Constructor 
     * @param smtp 邮件发送处事器 
     */
    public Mail(String smtp){   
        setSmtpHost(smtp);   
        createMimeMessage();   
    }   
      
    /** 
     * 配置邮件发送处事器 
     * @param hostName String  
     */
    public void setSmtpHost(String hostName) {   
        System.out.println("配置系统属性：mail.smtp.host = "+hostName);   
        if(props == null)  
            props = System.getProperties(); //得到系统属性工具    
        props.put("mail.smtp.host",hostName); //配置SMTP主机   
    }   
      
      
    /** 
     * 建设MIME邮件工具   
     * @return 
     */
    public boolean createMimeMessage()   
    {   
        try {   
            System.out.println("筹备获取邮件会话工具！");   
            session = Session.getDefaultInstance(props,null); //得到邮件会话工具   
        }   
        catch(Exception e){   
            System.err.println("获取邮件会话工具时产生错误！"+e);   
            return false;   
        }   
          
        System.out.println("筹备建设MIME邮件工具！");   
        try {   
            mimeMsg = new MimeMessage(session); //建设MIME邮件工具   
            mp = new MimeMultipart();   
              
            return true;   
        } catch(Exception e){   
            System.err.println("建设MIME邮件工具失败！"+e);   
            return false;   
        }   
    }     
          
    /** 
     * 配置SMTP是否需要验证 
     * @param need 
     */
    public void setNeedAuth(boolean need) {   
        System.out.println("配置smtp身份认证：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");   
        }   
    }   
      
    /** 
     * 配置用户名和暗码 
     * @param name 
     * @param pass 
     */
    public void setNamePass(String name,String pass) {   
        username = name;   
        password = pass;   
    }   
      
    /** 
     * 配置邮件主题 
     * @param mailSubject 
     * @return 
     */
    public boolean setSubject(String mailSubject) {   
        System.out.println("配置邮件主题！");   
        try{   
            mimeMsg.setSubject(mailSubject);   
            return true;   
        }   
        catch(Exception e) {   
            System.err.println("配置邮件主题产生错误！");   
            return false;   
        }   
    }  
          
    /**  
     * 配置邮件正文 
     * @param mailBody String  
     */ 
    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("配置邮件正文时产生错误！"+e);   
        return false;   
        }   
    }   
    /**  
     * 添加附件 
     * @param filename String  
     */ 
    public boolean addFileAffix(String filename) {   
          
        System.out.println("增加邮件附件："+filename);   
        try{   
            BodyPart bp = new MimeBodyPart();   
            FileDataSource fileds = new FileDataSource(filename);   
            bp.setDataHandler(new DataHandler(fileds));   
            bp.setFileName(fileds.getName());   
                  
            mp.addBodyPart(bp);   
                  
            return true;   
        } catch(Exception e){   
            System.err.println("增加邮件附件："+filename+"产生错误！"+e);   
            return false;   
        }   
    }   
          
    /**  
     * 配置发信人 
	 * 查察本栏目
public static void main(String[] args){  
    String smtp = "SMTP处事器";  
    String from = "发信人";  
    String to = "收信人";  
    String copyto = "抄送人";  
    String subject = "邮件主题";  
    String content = "邮件内容";  
    String username="用户名";  
    String password="暗码";  
    String filename = "附件路径，如：F:\\条记<a>\\struts2</a>与mvc.txt";
    Mail.sendAndCc(smtp, from, to, copyto, subject, content, username, password, filename);  
}