JavaMail在SSM框架中的应用

 SSM框架的搭建 在我的博客里有，用Maven搭建 和 jar包搭建的都有，可以看我的博客，好了，直接开始JavaMail 在SSM框架中的应用

我只贴出来关键的代码 ，大家可以参照一下

第一步  Maven 添加Mail支持

 <!--上传文件-->    <dependency>      <groupId>commons-fileupload</groupId>      <artifactId>commons-fileupload</artifactId>      <version>1.3.1</version>    </dependency>    <dependency>      <groupId>commons-io</groupId>      <artifactId>commons-io</artifactId>      <version>2.4</version>    </dependency>       <!-- javamail -->        <dependency>            <groupId>javax.mail</groupId>            <artifactId>mail</artifactId>            <version>1.4.5</version>        </dependency>

第二步  先写pojo类 （就是从前端传来的主题，内容什么什么的）

package cn.bssys.po;import java.util.Arrays;import java.util.Date;public class Email {    private String recipient[];//因为会发送邮件给好几个人，所以用数组来代表每个接收者的email地址    private String sender;    private String subject;    private String content;    private String attachment;    private Date sendDate;    public String[] getRecipient() {        return recipient;    }    public void setRecipient(String[] recipient) {        this.recipient = recipient;    }    public String getSender() {        return sender;    }    public void setSender(String sender) {        this.sender = sender;    }    public String getSubject() {        return subject;    }    public void setSubject(String subject) {        this.subject = subject;    }    public String getContent() {        return content;    }    public void setContent(String content) {        this.content = content;    }    public String getAttachment() {        return attachment;    }    public void setAttachment(String attachment) {        this.attachment = attachment;    }    public Date getSendDate() {        return sendDate;    }    public void setSendDate(Date sendDate) {        this.sendDate = sendDate;    }    @Override    public String toString() {        return "Email{" +                "recipient=" + Arrays.toString(recipient) +                ", sender='" + sender + '\'' +                ", subject='" + subject + '\'' +                ", content='" + content + '\'' +                ", attachment='" + attachment + '\'' +                ", sendDate=" + sendDate +                '}';    }}

第三步  先写接口 （写到这的时候，被我的小组长说了，因为我把用到的函数都写在了接口里，但是用到的就一个函数而已。。。以后不要犯这种错误啦）

package cn.bssys.service;import cn.bssys.po.Email;import javax.mail.Message;import javax.mail.Session;/** * Created by LENOVO on 2017/8/3. */public interface MailService  {    public boolean sendEamil(Email email) ;}

第四步  写实现接口类

package cn.bssys.service.impl;import cn.bssys.po.Email;import cn.bssys.service.MailService;import org.springframework.stereotype.Service;import javax.activation.DataHandler;import javax.activation.FileDataSource;import javax.mail.Message;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;import java.io.BufferedInputStream;import java.io.FileInputStream;import java.io.InputStream;import java.util.Properties;@Service("mailService")//SSM框架 注解，让Spring明白它是一个Service组件（告诉spring创建一个实现类的实例）//mailService 就是在为这个bean 取名字 public class MailServiceImpl extends Thread implements MailService{    private Session session = null;    private Properties prop = null;    private Transport ts = null;    public MailServiceImpl() throws Exception {        System.setProperty("mail.mime.charset","UTF-8");        prop = new Properties();        //获取properties 的内容，注意 使用各种邮箱发送邮件，properties里面的内容是不一样的！！      InputStream in = this.getClass().getResourceAsStream("/mail.properties");        prop.load(in);    }    public void connect()throws Exception{        session = Session.getInstance(prop);        session.setDebug(true);        ts = session.getTransport();//       ts.connect(host, username, password);//      163邮箱connect方法，第三个参数应该是授权码，而不是密码.        String host = prop.getProperty("host");        String username = prop.getProperty("username");        String password = prop.getProperty("password");        ts.connect(host, username, password);    }    @Override    public boolean sendEamil(Email email) {        boolean flag = false;        try {            connect();            String from = prop.getProperty("from");            MimeMessage message = new MimeMessage(session);            message.setFrom(new InternetAddress(from));            for (int i = 0; i < email.getRecipient().length; i++) {                message.setRecipient(Message.RecipientType.TO, new InternetAddress(email.getRecipient()[i]));            }//                message.setSubject(email.getSubject());                message.setSubject(email.getSubject(),"UTF-8");                String info = email.getContent();                message.setContent(info, "text/html;charset=UTF-8");                if(email.getAttachment()!=null){                    MimeBodyPart attach = new MimeBodyPart();                    DataHandler dh = new DataHandler(new FileDataSource(email.getAttachment()));                    attach.setDataHandler(dh);                    attach.setFileName(dh.getName());                    MimeMultipart mp = new MimeMultipart();                   // mp.addBodyPart(text);                    mp.addBodyPart(attach);                    mp.setSubType("mixed");                    message.setContent(mp);                }                message.saveChanges();                ts.sendMessage(message, message.getAllRecipients());               ts.close();            flag = true;        } catch (Exception e) {            e.printStackTrace();        }        return flag;    }}

第五步 mail.properties  我用的qq邮箱   如果用别的邮箱，写的也不同

from=*******@qq.comusername=*******password=********host=smtp.qq.commail.transport.protocol=smtpmail.smtp.auth=truemail.smtp.port=465mail.smtp.socketFactory.port=465mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory

第六步 controller层

package cn.bssys.controller;import cn.bssys.po.Email;import cn.bssys.service.MailService;import cn.bssys.service.StudentService;import cn.bssys.service.impl.MailServiceImpl;import cn.bssys.util.PageUtil;import com.alibaba.fastjson.JSON;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.multipart.commons.CommonsMultipartFile;import javax.servlet.http.HttpServletRequest;@Controller@RequestMapping(value = "/mail",produces = {"application/json;charset=UTF-8"} )public class MailController {    @Autowired    MailService mailService;    @Autowired    StudentService studentService;    @RequestMapping("/send")    @ResponseBody    public String sendEmail(Email email, @RequestParam(value = "file",required = false)CommonsMultipartFile file, HttpServletRequest request) throws Exception {        if (!file.isEmpty()){ //判断有没有附件             email.setAttachment(PageUtil.uploadAnnex(request,file,"cache","email_attachment"));        }        for (int i = 0;i < email.getRecipient().length;i++){            email.getRecipient()[i] = studentService.getObjectByPrimaryKey(Integer.parseInt(email.getRecipient()[i])).getEmail();        }        if (mailService.sendEamil(email)){            return JSON.toJSONString("发送成功");        }else {            return JSON.toJSONString("发送失败，请稍后再试");        }    }}