java实现邮件的发送包括网页文件的发送

package com.company.simplemail;

import javax.mail.Authenticator;

import javax.mail.PasswordAuthentication;

/**
* 服务器邮箱登录验证
*/
public class MailAuthenticatorextends Authenticator {

// 用户名（登录邮箱）
private String username;

// 密码
private String password;

/**
* 初始化邮箱和密码
* @param username 邮箱
* @param password 密码
*/
public MailAuthenticator(String username, String password){
this.username = username;
this.password = password;
}

String getPassword() {
return password;
}

@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}

String getUsername() {
return username;
}

public void setPassword(String password) {
this.password = password;
}

public void setUsername(String username) {
this.username = username;
}

}

package com.company.simplemail;

import java.util.List;
import java.util.Properties;

import javax.mail.MessagingException;
import javax.mail.Multipart;
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.MimeMessage.RecipientType;
import javax.mail.internet.MimeMultipart;


/**
* 简单邮件发送器，可单发，群发。
*/
public class SimpleMailSender {
// 发送邮件的props文件
private finaltransient Properties props = System.getProperties();

// 邮件服务器登录验证
private transient MailAuthenticator authenticator;

// 邮箱session
private transient Session session;

/**
* 初始化邮件发送器
* @param smtpHostName SMTP邮件服务器地址
* @param username 发送邮件的用户名(地址)
* @param password 发送邮件的密码
*/
public SimpleMailSender(final String smtpHostName,final String username,
final String password) {
init(username, password, smtpHostName);
}

/**
* 初始化邮件发送器
* @param username 发送邮件的用户名(地址)，并以此解析SMTP服务器地址
* @param password 发送邮件的密码
*/
public SimpleMailSender(final String username,final String password) {
// 通过邮箱地址解析出smtp服务器，对大多数邮箱都管用
final String smtpHostName = "smtp." + username.split("@")[1];
init(username, password, smtpHostName);
}

/**
* 初始化
* @param username 发送邮件的用户名(地址)
* @param password 密码
* @param smtpHostName SMTP主机地址
*/
private void init(String username, String password, String smtpHostName) {
// 初始化props
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.host", smtpHostName);
// 验证
authenticator = new MailAuthenticator(username, password);
// 创建session
session = Session.getInstance(props, authenticator);
}

/**
* 发送邮件
* @param recipient收件人邮箱地址
* @param subject邮件主题
* @param content邮件内容
* @throws AddressException
* @throws MessagingException
*/
public void send(String recipient, String subject, String content)
throws AddressException, MessagingException {
// 创建mime类型邮件
final MimeMessage message = new MimeMessage(session);
// 设置发信人
message.setFrom(new InternetAddress(authenticator.getUsername()));
// 设置收件人
message.setRecipient(RecipientType.TO, new InternetAddress(recipient));
// 设置主题
message.setSubject(subject);
// 设置邮件内容
Multipart mp = new MimeMultipart("related");
MimeBodyPart mbp = new MimeBodyPart();
mbp.setContent(content.toString(),"text/html;charset=utf-8");
mp.addBodyPart(mbp);
message.setContent(mp);


// 设置邮件内容
// message.setContent(content.toString(), "text/html;charset=utf-8");
// 发送
Transport.send(message);
}

/**
* 群发邮件
* @param recipients收件人们
* @param subject 主题
* @param content 内容
* @throws AddressException
* @throws MessagingException
*/
public void send(List<String> recipients, String subject, String content)
throws AddressException, MessagingException {
// 创建mime类型邮件
final MimeMessage message = new MimeMessage(session);
// 设置发信人
message.setFrom(new InternetAddress(authenticator.getUsername()));
// 设置收件人们
final int num = recipients.size();
InternetAddress[] addresses = new InternetAddress[num];
for (int i = 0; i < num; i++) {
addresses[i] = new InternetAddress(recipients.get(i));
}
message.setRecipients(RecipientType.TO, addresses);
// 设置主题
message.setSubject(subject);
// 设置邮件内容
message.setContent(content.toString(), "text/html;charset=utf-8");
// 发送
Transport.send(message);
}

/**
* 发送邮件
* @param recipient收件人邮箱地址
* @param mail邮件对象
* @throws AddressException
* @throws MessagingException
* 　
*/
public void send(String recipient, SimpleMail mail)
throws AddressException, MessagingException {
send(recipient, mail.getSubject(), mail.getContent());
}

/**
* 群发邮件
* @param recipients 收件人们
* @param mail 邮件对 象　
* @throws AddressException
* @throws MessagingException
*/
public void send(List<String> recipients, SimpleMail mail)
throws AddressException, MessagingException {
send(recipients, mail.getSubject(), mail.getContent());
}
}

package com.company.simplemail;

public class SimpleMail {
//邮件中的主题
private String subject;
//邮件的内容（正文）
private String content;
//可根据需要增加其他邮件元素

public void setSubject(String subject) {
this.subject = subject;
}

public void setContent(String content) {
this.content = content;
}

public String getSubject() {
return subject;
}

public String getContent() {
return content;
}
}

package com.company.util;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.GetMethod;

public class ReadHtmlFile {

public static HttpClient client =new HttpClient();

//读取普通文件
public static String readFile(String filename) {
File file = new File(filename);
Reader reader = null;
StringBuffer stb = new StringBuffer();
int charread = 0;
char[] temps = newchar[100];
try {
reader = new InputStreamReader(new FileInputStream(file));
while ((charread = reader.read(temps)) != -1) {
if (charread == temps.length) {
stb.append(temps);
temps = new char[100];
charread = 0;
}
}
stb.append(temps);
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
String str = stb.toString();
return str;
}

/**
*
* 所要发送的网页中,不要使用外联样式，脚本等，
* 因为各大邮箱后台的过滤算法会过滤掉css,script等
* 样式用标签style属性写
* 图片、链接必须使用绝对地址 （http://.....） 形式才能接收显示
* */
public static String getSource(String url) {

GetMethod method = new GetMethod(url);

try {
client.executeMethod(method);
} catch (HttpException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
InputStream in = null;
try {
in = method.getResponseBodyAsStream();
} catch (IOException e1) {

// e1.printStackTrace();
}
in = new BufferedInputStream(in);
Reader r = new InputStreamReader(in);
int c;
StringBuffer buffer = new StringBuffer();

try {
while ((c = r.read()) != -1)
buffer.append((char) c);
} catch (IOException e) {
e.printStackTrace();
}
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
method.releaseConnection();

return buffer.toString();
}
}