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();
} } }