java 发送邮件

做一个发送邮件功能，做个记录

首先要用到两个 jar 包，

 

如果用的是mavan，可以用下面的包配置

<!--email-->
        <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>1.4.5</version>
        </dependency>
        <dependency>
            <groupId>javax.inject</groupId>
            <artifactId>javax.inject</artifactId>
            <version>1</version>
        </dependency>

 

 

现在开始写java 代码部分

 

import java.security.AccessController;
import java.security.Provider;
/**
 * Created by songzhan on 14-10-27.
 */
public class JSSEProvider extends Provider {
   
    private static final long serialVersionUID = 1L;

    public JSSEProvider() {
            super("HarmonyJSSE", 1.0, "Harmony JSSE Provider");
            AccessController.doPrivileged(new java.security.PrivilegedAction<Void>() {
                public Void run() {
                    put("SSLContext.TLS",
                            "org.apache.harmony.xnet.provider.jsse.SSLContextImpl");
                    put("Alg.Alias.SSLContext.TLSv1", "TLS");
                    put("KeyManagerFactory.X509",
                            "org.apache.harmony.xnet.provider.jsse.KeyManagerFactoryImpl");
                    put("TrustManagerFactory.X509",
                            "org.apache.harmony.xnet.provider.jsse.TrustManagerFactoryImpl");
                    return null;
                }
            });
        }
}

 

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.Security;
import java.util.Properties;


/**
 * Created by songzhan on 14-10-27.
 */
public class GMailSender extends javax.mail.Authenticator {
    private String user;
    private String password;
    private Session session;

    static {
        Security.addProvider(new JSSEProvider());
    }

    public GMailSender(String user, String password) {
        this.user = user;
        this.password = password;

        Properties props = new Properties();
        props.setProperty("mail.transport.protocol", "smtp");
        props.setProperty("mail.host", EmailConstant.HOST);
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.port", "465");
        props.put("mail.smtp.socketFactory.port", "465");
        props.put("mail.smtp.socketFactory.class",
                "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.socketFactory.fallback", "false");
        props.setProperty("mail.smtp.quitwait", "false");

        session = Session.getDefaultInstance(props, this);
    }

    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(user, password);
    }

    /**
     * 发送邮件
     *
     * @param subject    标题
     * @param body       内容
     * @param sender     发件人
     * @param recipients 收件人地址
     * @throws Exception
     */
    public synchronized void sendMail(String subject, String body, String sender, String recipients) throws Exception {
        try {
            MimeMessage message = new MimeMessage(session);
            DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/html;charset = utf-8"));
            message.setSender(new InternetAddress(sender));
            message.setSubject(subject);
            message.setDataHandler(handler);
            if (recipients.indexOf(',') > 0)
                message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients));
            else
                message.setRecipient(Message.RecipientType.TO, new InternetAddress(recipients));
            Transport.send(message);
        } catch (Exception e) {

        }
    }

    public class ByteArrayDataSource implements DataSource {
        private byte[] data;
        private String type;

        public ByteArrayDataSource(byte[] data, String type) {
            super();
            this.data = data;
            this.type = type;
        }

        public ByteArrayDataSource(byte[] data) {
            super();
            this.data = data;
        }

        public void setType(String type) {
            this.type = type;
        }

        public String getContentType() {
            if (type == null)
                return "application/octet-stream";
            else
                return type;
        }

        public InputStream getInputStream() throws IOException {
            return new ByteArrayInputStream(data);
        }

        public String getName() {
            return "ByteArrayDataSource";
        }

        public OutputStream getOutputStream() throws IOException {
            throw new IOException("Not Supported");
        }
    }
}  

 

/**
 * Created by songzhan on 14-10-27.
 */

public class SendEmailTask {

    protected String doInBackground(String... params) {
        try {
            GMailSender sender = new GMailSender(EmailConstant.EMAIL,
                    EmailConstant.PASSWORD);
            sender.sendMail("这是我测试的一封邮件标题"
                    , "这是我发测试的一封邮件内容"
                    , EmailConstant.EMAIL
                    , "[email protected]");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }

    public static void main(String[] args) {
        SendEmailTask sendEmailTask = new SendEmailTask();
        sendEmailTask.doInBackground("");

    }
}

 

经过测试，发送成功。

 

内容格式 可以 设置，可以发html格式，还有文本格式。

text/html;charset = utf-8