在使用spring的邮件反送的时候，个人理解是先要有一个邮件发送器可以使用任意一个smtp进行邮件发送，使用此功能必须使用的jar文件为
spring-context.jar
mail.jar
spring-core.jar
activation.jar
commons-logging.jar
在resin和weblogic下启动均无异常发生但在tomcat下发生如下异常
java.lang.NoClassDefFoundError:javax/mail/MessagingException
这个问题的解决方法为将mail.jar和activation.jar放入tomcat下的lib下
Spring bean的编写：
<bean id="mailSender"
class="org.springframework.mail.javamail.JavaMailSenderImpl"
abstract="false" singleton="true" lazy-init="default"
autowire="default" dependency-check="default" >
<property name="host">
<value>smtp.126.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</value>
</property>
<property name="password">
<value>********</value>
</property>
</bean>
但在后台进行注入后总是发生如下异常
2008-03-23 15:19:43,640 WARN [org.apache.struts.action.RequestProcessor] [org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:516)] - Unhandled Exception thrown: class org.springframework.mail.MailAuthenticationException
[15:19:43.656] javax.servlet.ServletException: org.springframework.mail.MailAuthenticationException: Authentication failed: null; nested exception is javax.mail.AuthenticationFailedException
[15:19:43.656] at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523)
[15:19:43.656] at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
[15:19:43.656] at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
[15:19:43.656] at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
[15:19:43.656] at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
[15:19:43.656] at javax.servlet.http.HttpServlet.service(HttpServlet.java:115)
[15:19:43.656] at javax.servlet.http.HttpServlet.service(HttpServlet.java:92)
[15:19:43.656] at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:106)
[15:19:43.656] at cn.xy.filter.Chstr.doFilter(Chstr.java:23)
[15:19:43.656] at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:70)
[15:19:43.656] at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:173)
[15:19:43.656] at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:229)
[15:19:43.656] at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:274)
[15:19:43.656] at com.caucho.server.port.TcpConnection.run(TcpConnection.java:514)
[15:19:43.656] at com.caucho.util.ThreadPool.runTasks(ThreadPool.java:520)
[15:19:43.656] at com.caucho.util.ThreadPool.run(ThreadPool.java:442)
[15:19:43.656] at java.lang.Thread.run(Thread.java:595)
[15:19:43.656] Caused by: org.springframework.mail.MailAuthenticationException: Authentication failed: null; nested exception is javax.mail.AuthenticationFailedException
[15:19:43.656] at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:395)
[15:19:43.656] at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:291)
[15:19:43.656] at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:277)
[15:19:43.656] at cn.xy.struts.action.MailtestAction.execute(MailtestAction.java:47)
[15:19:43.656] at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
[15:19:43.656] ... 15 more
[15:19:43.656] Caused by: javax.mail.AuthenticationFailedException
[15:19:43.656] at javax.mail.Service.connect(Service.java:306)
[15:19:43.656] at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:373)
[15:19:43.656] ... 19 more
错误原因查明为使用发送邮件的信箱为刚刚注册的126信箱，不提供使用此功能所以更换其他邮箱以后问题解决
必须注意的是你发送邮件的时候使用的from邮箱必须是XML文件中配置的邮箱否则会发生异常
简单文本邮件发送
SimpleMailMessage mail = new SimpleMailMessage();