spring mail发送邮件

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在网站注册时，我们有时候会需要进行激活。以发送邮件的形式来进行帐号激活。

下面我们用spring的mail进行发送邮件。

配置如下：

<bean id="sender" class="org.springframework.mail.javamail.JavaMailSenderImpl"><property name="host"><value>smtp.163.com</value></property><property name="javaMailProperties"><props><prop key="mail.smtp.auth">true</prop><prop key="mail.smtp.timeout">25000</prop></props></property><property name="username"><value>username@163.com</value></property><property name="password"><value>password</value></property></bean><bean id="abstractEmail" class="com.ysw.framework.util.AbstractEmail" abstract="true"><property name="sender" ref="sender"></property><property name="freeMarkerConfigurer" ref="freeMarkerConfigurer"></property></bean><bean id="emailService" class="com.ysw.framework.util.EmailService" parent="abstractEmail"></bean>

对应的java类：

public abstract class AbstractEmail {protected String from;protected String subject;protected JavaMailSender sender;protected FreeMarkerConfigurer freeMarkerConfigurer = null; // FreeMarker的技术类public String getFrom() {return from;}public void setFrom(String from) {this.from = from;}public String getSubject() {return subject;}public void setSubject(String subject) {this.subject = subject;}public JavaMailSender getSender() {return sender;}public void setSender(JavaMailSender sender) {this.sender = sender;}public FreeMarkerConfigurer getFreeMarkerConfigurer() {return freeMarkerConfigurer;}public void setFreeMarkerConfigurer(FreeMarkerConfigurer freeMarkerConfigurer) {this.freeMarkerConfigurer = freeMarkerConfigurer;}/** * 发送单个html格式邮件 * @param content 用户注册的id，昵称（nickName），激活地址（url） * @param address 发送地址 发送的邮箱地址 * @throws Exception */public abstract void sendEmail(Map<?, ?> content, String address) throws Exception;/** * 批量发送html格式邮件 */public abstract void sendBatchEmail(String content, List<String> address) throws Exception;}

public class EmailService extends AbstractEmail {@Overridepublic void sendEmail(Map<?, ?> content, String address) throws Exception {MimeMessage msg = sender.createMimeMessage();// 设置utf-8或GBK编码，否则邮件会有乱码，true表示为multipart邮件MimeMessageHelper helper = new MimeMessageHelper(msg, true, "utf-8");helper.setTo(address); // 邮件接收地址helper.setFrom(from); // 邮件发送地址,这里必须和xml里的邮件地址相同一致helper.setSubject(subject); // 主题String htmlText = getMailText(content); // 使用模板生成html邮件内容helper.setText(htmlText, true); // 邮件内容，注意加参数true，表示启用html格式sender.send(msg); // 发送邮件}@Overridepublic void sendBatchEmail(String content, List<String> address) {}/** * 集合转换字符串 */public String getMailList(List<String> to) {StringBuffer toList = new StringBuffer();int length = to.size();if (to != null && length < 2) {toList.append(to.get(0));} else {for (int i = 0; i < length; i++) {toList.append(to.get(i));if (i != (length - 1)) {toList.append(",");}}}return toList.toString();}// 通过模板构造邮件内容，参数content将替换模板文件中的${content}标签。private String getMailText(Map<?, ?> map) throws Exception {String htmlText = "";// 通过指定模板名获取FreeMarker模板实例Template tpl = freeMarkerConfigurer.getConfiguration().getTemplate("registerUser.ftl");// FreeMarker通过Map传递动态数据// 注意动态数据的key和模板标签中指定的属性相匹配// 解析模板并替换动态数据，最终content将替换模板文件中的${content}标签。htmlText = FreeMarkerTemplateUtils.processTemplateIntoString(tpl, map);return htmlText;}}

对应的测试类：

@Testpublic void sendMailTest() throws Exception{EmailService es = (EmailService) ac.getBean("emailService");es.setSubject("注册");es.setFrom("username@163.com");Map<String, Object> content = new HashMap<String, Object>();String id = "123456";content.put("id", id);content.put("nickName", "王尼玛");String url = "http://192.168.1.16:8080/customer/registerCheck.html?id="+id;content.put("url", url);String address = "to@163.com";es.sendEmail(content, address);}

注册模版：registerUsr.ftl

<html>     <head>        <meta http-equiv="content-type" content="text/html;charset=utf8">     </head>     <body>         亲爱的<font color='red' size='30'>${nickName}</font>： <br/>       请点击下面的地址进行激活：<a href="${url}">${url}</a>   </body>  </html>

freemark的配置：

<bean id="freeMarkerConfigurer" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer"><property name="templateLoaderPath" value="/" /><property name="freemarkerSettings"><props><prop key="template_update_delay">5</prop><prop key="defaultEncoding">UTF-8</prop><prop key="url_escaping_charset">UTF-8</prop><prop key="locale">zh_CN</prop><prop key="boolean_format">true,false</prop><prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop><prop key="time_format">HH:mm:ss</prop><prop key="number_format">0.######</prop><prop key="whitespace_stripping">true</prop></props></property></bean>

有图有真相：

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