Spring mail 发送邮件

来源：互联网发布：国产零食知乎编辑：程序博客网时间：2024/05/16 03:35

简介：介绍如何使用Spring mail api 来发送email，用velocityEngine 解析邮件模板，这里会用一个完整的Spring mail 发送邮件的例子来演示它发送email的过程。您会欣赏到 Spring mail 的丰富功能，以及它是如何简化开发任务的.

Spring Mail API
Spring Mail API都在org.springframework.mail及其子包org.springframework.mail.javamail中封装。

JavaMailSenderImpl: 邮件发送器，主要提供了邮件发送接口、透明创建Java Mail的MimeMessage、及邮件发送的配置(如:host/port/username/password...)。
MimeMailMessage、MimeMessageHelper：对MimeMessage进行了封装。Spring还提供了一个回调接口MimeMessagePreparator, 用于准备JavaMail的MIME信件.

上代码，MailUtil类负责发送，MailBean类封装邮件信息。只有这两个类了简单吧

MailUtil.java

package com.dr.sm.mail;    import java.io.IOException;  import java.io.StringWriter;  import java.io.UnsupportedEncodingException;    import javax.mail.MessagingException;  import javax.mail.internet.MimeMessage;    import org.apache.log4j.Logger;  import org.apache.velocity.VelocityContext;  import org.apache.velocity.app.VelocityEngine;  import org.apache.velocity.exception.VelocityException;  import org.springframework.mail.javamail.JavaMailSender;  import org.springframework.mail.javamail.MimeMessageHelper;    /**  * spring发送mail工具  * @author: haleywang,@created on: 2012-9-20  */  public class MailUtil {        Logger log = Logger.getLogger(MailUtil.class);            private JavaMailSender javaMailSender;      private VelocityEngine velocityEngine;          //模板解析                  /**      * @param mailBean      * @return      * @throws MessagingException      */      public boolean send(MailBean mailBean) throws MessagingException {            MimeMessage msg = createMimeMessage(mailBean);          if(msg == null){              return false;          }                    this.sendMail(msg, mailBean);                    return true;      }            private void sendMail(MimeMessage msg, MailBean mailBean){                  javaMailSender.send(msg);                  log.info("$$$ Send mail Subject:" +  mailBean.getSubject()                           + ", TO:" + arrayToStr(mailBean.getToEmails()) );        }            /*      * 记日记用的      */      private String arrayToStr(String[] array){          if(array == null || array.length == 0){              return null;          }          StringBuffer sb = new StringBuffer();          for(String str : array){              sb.append(str+" , ") ;          }          return sb.toString();      }        /*       * 根据 mailBean 创建 MimeMessage      */      private MimeMessage createMimeMessage(MailBean mailBean) throws MessagingException {          if (!checkMailBean(mailBean)) {              return null;          }          String text = getMessage(mailBean);          if(text == null){              log.warn("@@@ warn mail text is null (Thread name="                       + Thread.currentThread().getName() + ") @@@ " +  mailBean.getSubject());              return null;          }          MimeMessage msg = javaMailSender.createMimeMessage();          MimeMessageHelper messageHelper = new MimeMessageHelper(msg, true, "UTF-8");          //messageHelper.setFrom(mailBean.getFrom());          try {              messageHelper.setFrom(mailBean.getFrom(), mailBean.getFromName());          } catch (UnsupportedEncodingException e) {              log.error(e);            }          messageHelper.setSubject(mailBean.getSubject());          messageHelper.setTo(mailBean.getToEmails());          messageHelper.setText(text, true); // html: true                    return msg;      }            /*      * 模板解析      * @param mailBean      * @return      */      private String getMessage(MailBean mailBean) {          StringWriter writer = null;          try {                writer = new StringWriter();              VelocityContext context = new VelocityContext(mailBean.getData());                velocityEngine.evaluate(context, writer, "", mailBean.getTemplate());                return writer.toString();          } catch (VelocityException e) {              log.error(" VelocityException : " + mailBean.getSubject() + "\n" + e);          } catch (IOException e) {              log.error(" IOException : " + mailBean.getSubject() + "\n" + e);          } finally {              if (writer != null) {                  try {                      writer.close();                  } catch (IOException e) {                      log.error("###StringWriter close error ... ");                  }              }          }          return null;      }            /*      * check 邮件      */      private boolean checkMailBean(MailBean mailBean){          if (mailBean == null) {              log.warn("@@@ warn mailBean is null (Thread name="                       + Thread.currentThread().getName() + ") ");              return false;          }          if (mailBean.getSubject() == null) {              log.warn("@@@ warn mailBean.getSubject() is null (Thread name="                       + Thread.currentThread().getName() + ") ");              return false;          }          if (mailBean.getToEmails() == null) {              log.warn("@@@ warn mailBean.getToEmails() is null (Thread name="                       + Thread.currentThread().getName() + ") ");              return false;          }          if (mailBean.getTemplate() == null) {              log.warn("@@@ warn mailBean.getTemplate() is null (Thread name="                       + Thread.currentThread().getName() + ") ");              return false;          }          return true;      }              /*===================== setter & getter =======================*/      public void setJavaMailSender(JavaMailSender javaMailSender) {          this.javaMailSender = javaMailSender;      }        public void setVelocityEngine(VelocityEngine velocityEngine) {          this.velocityEngine = velocityEngine;      }    }

MailBean

package com.dr.sm.mail;    import java.io.Serializable;  import java.util.Map;      public class MailBean implements Serializable {        private String from;      private String fromName;      private String[] toEmails;            private String subject;            private Map data ;          //邮件数据      private String template;    //邮件模板                  //省略setter&getter方法        }

接着就是配置文件了，applicationContext.xml，applicationContext-mail.xml
applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>  <beans      xmlns="http://www.springframework.org/schema/beans"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      xmlns:p="http://www.springframework.org/schema/p"      xmlns:aop="http://www.springframework.org/schema/aop"      xmlns:tx="http://www.springframework.org/schema/tx"      xmlns:context="http://www.springframework.org/schema/context"      xsi:schemaLocation="http://www.springframework.org/schema/beans                          http://www.springframework.org/schema/beans/spring-beans-3.0.xsd                          http://www.springframework.org/schema/aop                          http://www.springframework.org/schema/aop/spring-aop-3.0.xsd                          http://www.springframework.org/schema/tx                          http://www.springframework.org/schema/tx/spring-tx-3.0.xsd                          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd                          ">        <!-- ================2.自动扫描的包名===================== -->      <context:component-scan base-package="com.dr.sm" />         <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">          <property name="locations">              <list>                  <value>classpath:mail.properties</value>              </list>          </property>      </bean>                  <import resource="classpath:applicationContext-mail.xml"/>        </beans>

applicationContext-mail.xml

<?xml version="1.0" encoding="UTF-8"?>  <beans      xmlns="http://www.springframework.org/schema/beans"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      xmlns:p="http://www.springframework.org/schema/p"      xmlns:aop="http://www.springframework.org/schema/aop"      xmlns:tx="http://www.springframework.org/schema/tx"      xmlns:context="http://www.springframework.org/schema/context"      xsi:schemaLocation="http://www.springframework.org/schema/beans                          http://www.springframework.org/schema/beans/spring-beans-3.0.xsd                          http://www.springframework.org/schema/aop                          http://www.springframework.org/schema/aop/spring-aop-3.0.xsd                          http://www.springframework.org/schema/tx                          http://www.springframework.org/schema/tx/spring-tx-3.0.xsd                          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd                          ">        <!-- 邮件发送器 163  -->      <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">          <property name="host" value="${mail.host}" />          <property name="username" value="${mail.username}" />          <property name="password" value="${mail.password}" />          <property name="defaultEncoding" value="UTF-8"></property>          <property name="javaMailProperties">              <props>                  <prop key="mail.smtp.auth">${mail.smtp.auth}</prop>                  <prop key="mail.smtp.timeout">${mail.smtp.timeout}</prop>              </props>          </property>      </bean>                        <!--  邮件发送器 gmail        <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">            <property name="host" value="${mail.host}" />          <property name="username" value="${mail.username}" />          <property name="password" value="${mail.password}" />          <property name="defaultEncoding" value="UTF-8"></property>          <property name="javaMailProperties">                <props>                    <prop key="mail.smtp.auth">${mail.smtp.auth}</prop>                  <prop key="mail.smtp.timeout">${mail.smtp.timeout}</prop>                  <prop key="mail.smtp.port">465</prop>                    <prop key="mail.smtp.socketFactory.port">465</prop>                    <prop key="mail.smtp.socketFactory.fallback">false</prop>                    <prop key="mail.smtp.socketFactory.class">javax.net.ssl.SSLSocketFactory</prop>                </props>            </property>        </bean>        -->              <bean id="velocityEngine"          class="org.springframework.ui.velocity.VelocityEngineFactoryBean">      </bean>        <bean id="mailUtil" class="com.dr.sm.mail.MailUtil">          <property name="javaMailSender" ref="mailSender"></property>          <property name="velocityEngine" ref="velocityEngine"></property>      </bean>          </beans>

mail.properties

mail.from=wzqdemo@163.com  mail.host=smtp.163.com  mail.password=********  mail.smtp.auth=true  mail.smtp.timeout=25000  mail.username=wzqdemo    #mail.from=wzqdemo@163.com  #mail.host=smtp.gmail.com  #mail.password=********  #mail.smtp.auth=true  #mail.smtp.timeout=25000  #mail.username=wzqdemo@gmail.com

jar包：

activation.jar  commons-collections-3.2.jar  commons-lang-2.3.jar  commons-logging-1.1.1.jar  junit-4.10.jar  log4j-1.2.15.jar  mail.jar  spring-asm-3.0.6.RELEASE.jar  spring-beans-3.0.6.RELEASE.jar  spring-context-3.0.6.RELEASE.jar  spring-context-support-3.0.6.RELEASE.jar  spring-context.jar  spring-core-3.0.6.RELEASE.jar  spring-expression-3.0.6.RELEASE.jar  spring-jdbc-3.0.6.RELEASE.jar  spring-test-3.0.6.RELEASE.jar  spring-tx-3.0.6.RELEASE.jar  spring-xml-1.5.10.jar  velocity-1.6.4.jar

ok，终于可以开始测试咯！

package com.dr.sm.mail;    import java.util.HashMap;  import java.util.Map;    import javax.annotation.Resource;  import javax.mail.MessagingException;    import org.junit.Test;  import org.springframework.test.context.ContextConfiguration;  import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;      @ContextConfiguration("classpath:applicationContext.xml")  public class MailServiceTest extends AbstractJUnit4SpringContextTests {              @Resource      private MailUtil mailUtil;        @Test      public void testSendMail() {                    //创建邮件          MailBean mailBean = new MailBean();          mailBean.setFrom("wzqdemo@163.com");          mailBean.setSubject("hello world");          mailBean.setToEmails(new String[]{"wzqdemo@gmail.com"});          mailBean.setTemplate("hello ${userName} !<a href='www.baidu.com' >baidu</a>");          Map map = new HashMap();          map.put("userName", "Haley Wang");          mailBean.setData(map);                    //发送邮件          try {              mailUtil.send(mailBean);          } catch (MessagingException e) {              e.printStackTrace();          }                }  }

至此完成咯，可以下载附件，修改mail.properties文件就可以运行了。
http://wang3065.iteye.com/blog/1718381

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