爬虫获取邮箱，存入数据库，发送邮件java Mail

在网页上获取邮箱：

package com.my.test;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.sql.Statement;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class GetMail {

      public static void main(String args[]){    

            String patternStr = "[\\w[.-]]+@[\\w[.-]]+\\.[\\w]+";
            String url = "http://www.sina.com.cn";
            GetContent(patternStr,url);
        }

    private static void GetContent(String patternStr,String urlPath) {
        URL url;
        int responsecode;
        HttpURLConnection urlConnection;
        BufferedReader reader;
        String line;

        Statement st = DbUtil.getConn();

        try{
            //生成一个URL对象，要获取源代码的网页地址为：http://www.sina.com.cn
            url=new URL(urlPath);
            //打开URL
            urlConnection = (HttpURLConnection)url.openConnection();
            //获取服务器响应代码
            responsecode=urlConnection.getResponseCode();
            if(responsecode==200){
                //得到输入流，即获得了网页的内容
                reader=new BufferedReader(new InputStreamReader(urlConnection.getInputStream(),"UTF-8"));
                while((line=reader.readLine())!=null){

                     // 相当于埋好了陷阱匹配的地方就会掉下去
                     Pattern pattern = Pattern.compile(patternStr);
                     // 定义一个matcher用来做匹配
                     Matcher matcher = pattern.matcher(line);
                     // 如果找到了
                    while (matcher.find()) {  

                       st.executeUpdate("insert into email_from_web (email) values ('"+matcher.group()+"')");
                       System.out.println(matcher.group());

                    }
                }
            }
            else{
                System.out.println("获取不到网页的源码，服务器响应代码为："+responsecode);
            }
        }
        catch(Exception e){
            System.out.println("获取不到网页的源码,出现异常："+e);
        }finally {
            DbUtil.closeDb();
        }
    }

}

数据库Mysql相关代码：

package com.my.test;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class DbUtil {

    private static String username = "root";

    private static String pwd = "123456";

    private static String url = "jdbc:mysql://127.0.0.1:3306/test";

    private static Connection conn = null;

    private static Statement st = null;

    private static ResultSet rs = null;

    static Statement getConn(){

        try {

            Class.forName("com.mysql.jdbc.Driver");

            conn = DriverManager.getConnection(url, username, pwd);

            st  = conn.createStatement();

        } catch (Exception e) {
            throw new RuntimeException();
        }
        return st;
    }

    static void closeDb(){
        try {
            if(rs!=null){
                rs.close();
            }
            if(st!=null){
                st.close();
            }
            if(conn!=null){
                conn.close();
            }
        } catch (SQLException e) {
            System.out.println(e.getMessage());
            throw new RuntimeException();
        }
    }

}

发送邮件java maill

package com.my.test;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
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 SendMail { 

    private MimeMessage mimeMsg; //MIME邮件对象
    private Session session; //邮件会话对象
    private Properties props; //系统属性
    //smtp认证用户名和密码
    private String username;
    private String password;
    private Multipart mp; //Multipart对象,邮件内容,标题,附件等内容均添加到其中后再生成MimeMessage对象 

    /**
     * Constructor
     * @param smtp 邮件发送服务器
     */
    public SendMail(String smtp){
        setSmtpHost(smtp);
        createMimeMessage();
    } 

    /**
     * 设置邮件发送服务器
     * @param hostName String
     */
    public void setSmtpHost(String hostName) {
        System.out.println("设置系统属性：mail.smtp.host = "+hostName);
        if(props == null)
            props = System.getProperties(); //获得系统属性对象
        props.put("mail.smtp.host",hostName); //设置SMTP主机
    } 

    /**
     * 创建MIME邮件对象
     * @return
     */
    public boolean createMimeMessage()
    {
        try {
            System.out.println("准备获取邮件会话对象！");
            session = Session.getDefaultInstance(props,null); //获得邮件会话对象
        }
        catch(Exception e){
            System.err.println("获取邮件会话对象时发生错误！"+e);
            return false;
        } 

        System.out.println("准备创建MIME邮件对象！");
        try {
            mimeMsg = new MimeMessage(session); //创建MIME邮件对象
            mp = new MimeMultipart(); 

            return true;
        } catch(Exception e){
            System.err.println("创建MIME邮件对象失败！"+e);
            return false;
        }
    }     

    /**
     * 设置SMTP是否需要验证
     * @param need
     */
    public void setNeedAuth(boolean need) {
        System.out.println("设置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");
        }
    } 

    /**
     * 设置用户名和密码
     * @param name
     * @param pass
     */
    public void setNamePass(String name,String pass) {
        username = name;
        password = pass;
    } 

    /**
     * 设置邮件主题
     * @param mailSubject
     * @return
     */
    public boolean setSubject(String mailSubject) {
        System.out.println("设置邮件主题！");
        try{
            mimeMsg.setSubject(mailSubject);
            return true;
        }
        catch(Exception e) {
            System.err.println("设置邮件主题发生错误！");
            return false;
        }
    }

    /**
     * 设置邮件正文
     * @param mailBody String
     */
    public boolean setBody(String mailBody) {
        try{
            BodyPart bp = new MimeBodyPart();
            bp.setContent(""+mailBody,"text/html;charset=UTF-8");
            mp.addBodyPart(bp); 

            return true;
        } catch(Exception e){
        System.err.println("设置邮件正文时发生错误！"+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+"发生错误！"+e);
            return false;
        }
    } 

    /**
     * 设置发信人
     * @param from String
     */
    public boolean setFrom(String from) {
        System.out.println("设置发信人！");
        try{
            mimeMsg.setFrom(new InternetAddress(from)); //设置发信人
            return true;
        } catch(Exception e) {
            return false;
        }
    }
    /**
     * 设置收信人
     * @param to String
     */
    public boolean setTo(String to){
        if(to == null)return false;
        try{
            mimeMsg.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to));
            return true;
        } catch(Exception e) {
            return false;
        }
    } 

    /**
     * 设置抄送人
     * @param copyto String
     */
    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; }
    } 

    /**
     * 发送邮件
     */
    public boolean sendOut()
    {
        try{
            mimeMsg.setContent(mp);
            mimeMsg.saveChanges();
            System.out.println("正在发送邮件...."); 

            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)); 

            if(mimeMsg.getRecipients(Message.RecipientType.CC)!=null){
                transport.sendMessage(mimeMsg,mimeMsg.getRecipients(Message.RecipientType.CC));
            }

            System.out.println("发送邮件成功！");
            transport.close(); 

            return true;
        } catch(Exception e) {
            System.err.println("邮件发送失败！"+e);
            return false;
        }
    } 

    /**
     * 调用sendOut方法完成邮件发送
     * @param smtp
     * @param from
     * @param to
     * @param subject
     * @param content
     * @param username
     * @param password
     * @return boolean
     */
    public static boolean send(String smtp,String from,String to,String subject,String content,String username,String password) {
        SendMail theMail = new SendMail(smtp);
        theMail.setNeedAuth(true); //需要验证

        if(!theMail.setSubject(subject)) return false;
        if(!theMail.setBody(content)) return false;
        if(!theMail.setTo(to)) return false;
        if(!theMail.setFrom(from)) return false;
        theMail.setNamePass(username,password);

        if(!theMail.sendOut()) return false;
        return true;
    }

    /**
     * 调用sendOut方法完成邮件发送,带抄送
     * @param smtp
     * @param from
     * @param to
     * @param copyto
     * @param subject
     * @param content
     * @param username
     * @param password
     * @return boolean
     */
    public static boolean sendAndCc(String smtp,String from,String to,String copyto,String subject,String content,String username,String password) {
        SendMail theMail = new SendMail(smtp);
        theMail.setNeedAuth(true); //需要验证

        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;
    }

    /**
     * 调用sendOut方法完成邮件发送,带附件
     * @param smtp
     * @param from
     * @param to
     * @param subject
     * @param content
     * @param username
     * @param password
     * @param filename 附件路径
     * @return
     */
    public static boolean send(String smtp,String from,String to,String subject,String content,String username,String password,String filename) {
        SendMail theMail = new SendMail(smtp);
        theMail.setNeedAuth(true); //需要验证

        if(!theMail.setSubject(subject)) return false;
        if(!theMail.setBody(content)) return false;
        if(!theMail.addFileAffix(filename)) return false;
        if(!theMail.setTo(to)) return false;
        if(!theMail.setFrom(from)) return false;
        theMail.setNamePass(username,password);

        if(!theMail.sendOut()) return false;
        return true;
    }

    /**
     * 调用sendOut方法完成邮件发送,带附件和抄送
     * @param smtp
     * @param from
     * @param to
     * @param copyto
     * @param subject
     * @param content
     * @param username
     * @param password
     * @param filename
     * @return
     */
    public static boolean sendAndCc(String smtp,String from,String to,String copyto,String subject,String content,String username,String password,String filename) {
        SendMail theMail = new SendMail(smtp);
        theMail.setNeedAuth(true); //需要验证

        if(!theMail.setSubject(subject)) return false;
        if(!theMail.setBody(content)) return false;
        if(!theMail.addFileAffix(filename)) 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 from = "**@qq.com";

        String to = "";

        String subject = "123";

        String content ="456"; 

        String username ="***@qq.com";

        String password = "***";

        String smtp =  "smtp." + username.split("@")[1];

        ResultSet rs = null;
        try {
            Statement st = DbUtil.getConn();
            rs = st.executeQuery("SELECT email from email_from_web");
            while (rs.next()) {
                to = rs.getString("email");
                send(smtp, from, to, subject, content, username, password);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }finally {
            if(rs!=null){
                try {
                    rs.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
            DbUtil.closeDb();
        }

    }

}