javaMail发邮件，激活用户账号

用javamail实现注册用户验证邮箱功能。用户注册后随机生成一个uuid作为用户的标识，传递给用户然后作为路径参数。发送html的内容到用户注册的邮箱里，若用户点击后去往的页面提交username和password比对成功，则用户验证成功。

下面介绍代码。我用的是shiro作为安全框架。实际上我只用来做权限控制，这里不介绍shiro。springmvc作前端控制器，hibernate作数据库操作(为什么不用mybatis？我也很后悔没有用mybatis)用户注册代码

    @RequestMapping("base/register")
    public String register(User u, Model model) {
        if (u != null && StringUtils.isNoneBlank(u.getPassword()) && StringUtils.isNotBlank(u.getUsername())) {
            boolean nameExi = userService.checkUserName(u.getUsername());
            if (!nameExi) {
                // 为用户创建‘用户’角色
                u.setPassword(Md5Utils.toMd5(u.getPassword(), u.getUsername(), ));
                Role role = roleService.getRoleByRoleName("游客");
                u.setRole(role);
                u.setRegisterDate(new Date());
                u.setActivecode(UUID.randomUUID().toString().replace("-", ""));
                userService.register(u);
                String ip="";
                errorInfo = "请在邮箱中激活您的账户";
                try {
                    InetAddress addr=InetAddress.getLocalHost();
                    ip =addr.getHostAddress();
                } catch (UnknownHostException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                User registerU = userService.checkRealmUserName(u.getUsername());
                String subject="发给-"+registerU.getUsername();
                String email=registerU.getEmail();
                String msg="<h2>hi"+registerU.getUsername()+"</h2><hr><h4>thanks for reading this email and  click this link to active your account<a href='http://"+ip+":8080/myone-web/base/activeCount?activecode="+registerU.getActivecode()+"'>点击这里激活您的账户</a></h4>";
                MailSender mailSender=new MailSender();
                mailSender.sendActiveMail(msg, subject, email, javaMailSender);
                model.addAttribute("errorInfo", errorInfo);
                return "user_login"; // 用户注册成功
            }
            // 用户注册失败
            errorInfo = "注册失败  用户名已存在  或注册信息有误";
            model.addAttribute("errorInfo", errorInfo);

        }
        return "error";
    }

如果又看不懂的代码可以不看主要看传递邮箱的参数即可，这里还有一个注入了一个JavaMailSender类。新建发送邮件的项目：

创建maven项目加入依赖

<dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>1.4.</version>
        </dependency>

我用了spring这里也给出

<!-- spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>4.3..RELEASE</version>
        </dependency>

这些依赖只会多不会少 注意我这里没有version参数 因为我在之前做了锁定

<properties>
        <spring.version>4.2..RELEASE</spring.version>
        <hibernate.version>5.0..Final</hibernate.version>
        <jackson.version>2.7.</jackson.version>
    </properties>

javamail需要的包都在第一个依赖里

spring的applicationContext.xml部分配置文件

    <!-- 邮件配置 -->
    <context:property-placeholder location="classpath:mail.properties" />

    <!-- 邮件接口 -->
    <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="host" value="${mail.smtp.host}"></property>
        <property name="username" value="${mail.smtp.username}"></property>
        <property name="password" value="${mail.smtp.password}"></property>
        <property name="defaultEncoding" value="${mail.smtp.defaultEncoding}"></property>
        <property name="javaMailProperties">
            <props>
                <prop key="mail.smtp.auth">${mail.smtp.auth}</prop>
                <prop key="mail.smtp.timeout">${mail.smtp.timeout}</prop>
            </props>
        </property>
    </bean>

mail.properties配置文件

mail.smtp.host=smtp..com

mail.smtp.username=。。。。。@.com

mail.smtp.password=。。。

mail.smtp.defaultEncoding=utf-

mail.smtp.auth=true

mail.smtp.timeout=

放到resouce目录下或者选中文件夹build classpath

下面是我写的已sendMail实现，其实就两个方法，一个单独发送，一个发送多个联系人

package com.dabai.utils;

import java.util.Properties;

import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;

/**
* @author dabai: 

* 类说明  发送邮件工具类
*/
public class MailSender {
    //用户激活邮件
    public String sendActiveMail(String msg,String subject,String userEmail,JavaMailSender javaMailSender){
        //创建邮件对象
        MimeMessage mMessage =javaMailSender.createMimeMessage();
        MimeMessageHelper mMessageHelper;
        Properties prop=new Properties();
        //获取发送邮件参数
        try {
            prop.load(this.getClass().getResourceAsStream("/mail.properties"));
            String from =prop.get("mail.smtp.username")+"";
            mMessageHelper=new MimeMessageHelper(mMessage,true,"UTF-8");
            //发送邮箱
            mMessageHelper.setFrom(from);
            //收件人
            mMessageHelper.setTo(userEmail);
            //邮件标题 主题
            mMessageHelper.setSubject(subject);
            //设置邮件文本内容为html
            mMessageHelper.setText(msg,true);

            //发送
            javaMailSender.send(mMessage);
        } catch (Exception e) {
            e.printStackTrace();
            return " email send fail";
        }

        return "email send success";
    }
    //生日祝福邮件
    public String sendWish(String msg,String subject,InternetAddress[] emails,JavaMailSender javaMailSender){
        //创建邮件对象
                MimeMessage mMessage =javaMailSender.createMimeMessage();
                MimeMessageHelper mMessageHelper;
                Properties prop=new Properties();
                //获取发送邮件参数
        try {
            prop.load(this.getClass().getResourceAsStream("/mail.properties"));
            String from =prop.get("mail.smtp.username")+"";
            mMessageHelper=new MimeMessageHelper(mMessage,true,"UTF-8");
            //发送邮箱
            mMessageHelper.setFrom(from);
            mMessageHelper.setSubject(subject);
            mMessageHelper.setText(msg,true);
            mMessageHelper.setTo(emails);

            javaMailSender.send(mMessage);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return "email send finished";
    }

}

两个方法上面是用户注册是发送验证邮箱链接的，下面的方法是根据用户birthday给指定人发送邮件祝福，用quartz实现定时，此处不介绍

　　下面是用户注册逻辑 使用上面的第一个方法发送邮件

这里介绍下传递的参数  第一个方法的：

这一块：没有部署到远程主机上可以不用，url的路径写死即可，如果有域名的话写域名也ok对应这发送的信息  msg

String msg="<h2>hi"+registerU.getUsername()+"</h2><hr><h4>thanks for reading this email and  click this link to active your account<a href='http://"+ip+":8080/myone-web/base/activeCount?activecode="+registerU.getActivecode()+"'>点击这里激活您的账户</a></h4>";

html没问题吧不做解释。subject  ：string类型即可 发送邮件的主题

email 接收邮件的邮件地址 单个发可以写成string类型的  多个接收方要换成InternetAddress【】类型，转换也比较烦人。

MailSender  ：就是我写的那个 方法类

javaMailSender这就是前面在spring中注入的那个javamailImpl 。前面给出了配置 在你需要用到的地方@Autowired即可。

如果有用网易163的朋友可能会报

• DT:SPM

这样子的错误  通常是因为邮件的subject写的比较繁杂，就是花里胡哨的

其他的错误代码可参照

http://help.163.com/09/1224/17/5RAJ4LMH00753VB8.html

关于 MailSender工具类  大部分我在注释上给出了 这里说一下  下面setText后面跟的参数的意思  设置为false代表你只在msg中设置字符串，如果你想在msg中写html格式就要改成true  如设置为false 邮件显示msg内容为：    <h1>dabai</h1>

设置为true邮件msg内容就是

dabai

mMessageHelper.setText(msg,true);

关于发送给多个接收者：

就是MailSender类的第二个方法  同样这里给出使用方法

package com.dabai.jobs;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.javamail.JavaMailSender;

import com.dabai.service.UserService;
import com.dabai.utils.MailSender;

/**
* @author dabai: 

* 类说明  查找当日生日的用户 发送生日祝福邮件类
*/
public class SendBirthdayWish {
    @Autowired
    private UserService userService;
    @Autowired
    private JavaMailSender javaMailSender;
    public void sendWish() throws AddressException{
        Calendar date=Calendar.getInstance();
        int month=date.get(Calendar.MONTH)+;
        int day = date.get(Calendar.DAY_OF_MONTH);

        List<String>emails=userService.findBirthdayEmails(month,day);//根据当日的月份和天数从数据库中查询用户邮箱   因为我这里注册需要邮箱所以不存在为空的情况 这里不需判断 但我还是加了上去。。。  实际使用请斟酌一二
        if(emails!=null&&emails.size()>){　　　　　　　　　　　　　　//这里的一串代码可能看的有些迷糊  但是的确不好省掉  首先注意下我查出来的是List<String>的集合  然后我又把它换成String[]数组形式存储 然后再用List接收经过InternetAddress转换后的emal地址
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　//最后用InternetAddress[]数组接收
            String[]array=new String[emails.size()];
            List list=new ArrayList();
            InternetAddress[]address=null;
            for (int i=;i<emails.size();i++) {
                array[i]=emails.get(i);
            }
            for(int i=;i<array.length;i++){
                list.add(new InternetAddress(array[i]));
            }
            address=(InternetAddress[]) list.toArray(new InternetAddress[list.size()]);

            String msg="<h2> hi Dear</h2><br><b><pre>today is"+month+"月"+day+"日  and it's your birthday!  happy birthday to you </pre></b>";
            String subject="祝你生日快乐";
            MailSender mailsender=new MailSender();
            mailsender.sendWish(msg, subject, address, javaMailSender);　　　　　　//msg就是发送的信息 内容   subject 邮件主题 string类型即可  address 如果是多个接收者必须用InternetAddress[]
        }else{
            System.out.println("today nobody birthday"+new Date().toString());
        }

    }

}

下面是我踩得一些坑

DEBUG [schedulerFactoryBean_Worker-] - trace com.mchange.v2.resourcepool.BasicResourcePool@7af9a2cc [managed: , unused: , excluded: ] (e.g. com.mchange.v2.c3p0.impl.NewPooledConnection@231bf06e)
ERROR [schedulerFactoryBean_Worker-] - Job DEFAULT.sendWishJob threw an unhandled Exception:
org.springframework.scheduling.quartz.JobMethodInvocationFailedException: Invocation of method 'sendWish' on target class [class com.dabai.jobs.SendBirthdayWish] failed; nested exception is java.lang.ArrayStoreException
    at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:)
    at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:)
    at org.quartz.core.JobRunShell.run(JobRunShell.java:)
    at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:)
Caused by: java.lang.ArrayStoreException
    at java.lang.System.arraycopy(Native Method)
    at java.util.ArrayList.toArray(ArrayList.java:)
    at com.dabai.jobs.SendBirthdayWish.sendWish(SendBirthdayWish.java:)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)
    at java.lang.reflect.Method.invoke(Method.java:)
    at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:)
    at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:)
    ...  more
ERROR [schedulerFactoryBean_Worker-] - Job (DEFAULT.sendWishJob threw an exception.
org.quartz.SchedulerException: Job threw an unhandled exception. [See nested exception: org.springframework.scheduling.quartz.JobMethodInvocationFailedException: Invocation of method 'sendWish' on target class [class com.dabai.jobs.SendBirthdayWish] failed; nested exception is java.lang.ArrayStoreException]
    at org.quartz.core.JobRunShell.run(JobRunShell.java:)
    at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:)
Caused by: org.springframework.scheduling.quartz.JobMethodInvocationFailedException: Invocation of method 'sendWish' on target class [class com.dabai.jobs.SendBirthdayWish] failed; nested exception is java.lang.ArrayStoreException
    at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:)
    at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:)
    at org.quartz.core.JobRunShell.run(JobRunShell.java:)
    ...  more
Caused by: java.lang.ArrayStoreException
    at java.lang.System.arraycopy(Native Method)
    at java.util.ArrayList.toArray(ArrayList.java:)
    at com.dabai.jobs.SendBirthdayWish.sendWish(SendBirthdayWish.java:)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:)
    at java.lang.reflect.Method.invoke(Method.java:)
    at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:)
    at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:)
    ...  more

如果地址不经转换就会报上面那个错误

还一个就是

 java.lang.ArrayIndexOutOfBoundsException: 

在最初的转换中我用String[]array=new String[]{};

接收  再逐个放入然后逐个放入的代码报了上面那个越界错误需要改成：犯这种错实在不应当，

String[]array=new String[emails.size()];