我有一个自定义MailDto对象，我在其中设置to，cc，bCc字段并使用RestTemplate将其发送到Spring MVC控制器 如下
@RequestMapping(value = "/SendMail" )
public ResponseEntity<String> SendMail( @RequestBody MailMessageDto mailDto)
throws NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException
从控制器我调用网关（Spring集成）。 Gateway有一个方法public void sendMail（MailMessageDto mailDto）。网关通道调用一个转换器，它将mailDto转换为MimeMessageHelper对象。 mimeMessageHelper对象使用mailoutbound适配器作为邮件发送。现在我想使用RestTemplate发送邮件，但使用相同的MailDto附件。
问题是当我更改Gateway和Transformmer方法签名以容纳Multipart文件和MailMessageDto时，我将转换为MimeMessageHelper对象，在转换方法中，spring集成无法理解转换方法。
我想知道控制器方法的签名应该是什么，以及如何在xml中声明Transformer转换方法。
The mail-context file
<context:component-scan base-package="com.infra.mail,com.infra.audit " />
<mvc:annotation-driven />
<!-- <context:property-placeholder
location="classpath:/mail.properties" ignore-unresolvable="true" /> -->
<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
<property name="host" value="${mail.host}"/>
<property name="port" value="${mail.port}"/>
<property name="username" value="${mail.username}"/>
<property name="password" value="${mail.password}"/>
<property name="defaultEncoding" value="UTF-8"/>
<property name="javaMailProperties">
<props>
<!-- Use SMTP transport protocol -->
<prop key="mail.transport.protocol">smtp</prop>
<!-- Use SMTP-AUTH to authenticate to SMTP server -->
<prop key="mail.smtp.auth">true</prop>
<!-- Use TLS to encrypt communication with SMTP server -->
<prop key="mail.smtp.starttls.enable">false</prop>
<prop key="mail.debug">true</prop>
</props>
</property>
</bean>
<int:channel id="xfromMailChannel">
<int:queue/>
</int:channel>
The Transformer file
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import org.apache.log4j.Logger;
import org.apache.velocity.app.VelocityEngine;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.MailException;
import org.springframework.mail.MailMessage;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.ui.velocity.VelocityEngineUtils;
/**
* The Class MailMessageTransformer.
*/
public class MailMessageTransformer {
/** The velocity engine. */
@Autowired
private VelocityEngine velocityEngine;
/** The mail sender. */
@Autowired
private JavaMailSender mailSender;
/** The Constant LOG. */
private static final Logger LOG = Logger.getLogger(MailMessageTransformer.class);
/**
* Transform MailMessageDto to SimpleMailMessage.
*
* @param mailDto the mail dto
* @return the mail message
*/
public MailMessage transformSimple(MailMessageDto mailDto) {
LOG.debug("MailMessageTransformer.transform.MailMessageDto:::" + mailDto);
if (mailDto == null) {
return null;
}
if (mailDto.getEncoding() == null) {
mailDto.setEncoding(IMailConstants.DEFAULT_ENCODING);
}
if (mailDto.getTemplateName() == null
|| !mailDto.getTemplateName().endsWith(IMailConstants.VELOCITY_TEMPLATE_EXTN)) {
mailDto.setTemplateName(getTemplateName(mailDto.getEmailType()));
}
SimpleMailMessage message = new SimpleMailMessage();
message.setFrom(mailDto.getFrom());
message.setTo(mailDto.getTo());
message.setSubject(mailDto.getSubject());
message.setText(getMailContent(mailDto));
message.setSentDate(new Date(System.currentTimeMillis()));
message.setBcc(mailDto.getBcc());
message.setCc(mailDto.getCc());
message.setReplyTo(mailDto.getReplyTo());
/*
* if (null != mailDto.getBcc()) { message.setBcc(mailDto.getBcc()); }
* if (null != mailDto.getBcc()) { message.setCc(mailDto.getCc()); } if
* (null != mailDto.getReplyTo() && !mailDto.getReplyTo().isEmpty()) {
* message.setReplyTo(mailDto.getReplyTo()); }
*/
LOG.debug("MailMessageTransformer.transform.message:::" + message);
return message;
}
/**
* Create the email content/body using velocity engine, velocity template
* and MailMessageDto.
*
* @param mailDto the mail dto
* @return the mail content
*/
private String getMailContent(MailMessageDto mailDto) {
Map<String, Object> model = getVelocityModel(mailDto);
String mailContent = VelocityEngineUtils.mergeTemplateIntoString(velocityEngine, mailDto.getTemplateName(),
mailDto.getEncoding(), model);
LOG.debug("MailMessageTransformer.getMailContent.mailContent:::" + mailContent);
return mailContent;
}
/**
* Create the Model Map referred in velocity mail template file.
*
* @param mailDto the mail dto
* @return the velocity model
*/
private Map<String, Object> getVelocityModel(MailMessageDto mailDto) {
Map<String, Object> model = new HashMap<String, Object>();
model.put(IMailConstants.VM_USER, getUser(mailDto.getTo()));
model.put(IMailConstants.VM_ALERT_TYPE, getAlertType(mailDto.getEmailType()));
model.put(IMailConstants.VM_CONTENT, mailDto.getText());
return model;
}
/**
* Fetch the user (receients) name from MailMessageDto. This is referred in
* velocity template file. Currently from TO email list. Can be changed to
* look up user store if future
*
* @param toList the to list
* @return the user
*/
private String getUser(String[] toList) {
StringBuffer user = new StringBuffer();
for (String mailId : toList.clone()) {
StringTokenizer token = new StringTokenizer(mailId, IMailConstants.EMAIL_AT);
String to = token.nextToken();
user.append(to).append(IMailConstants.COMMA);
}
return user.toString();
}
/**
* Fetch the email type from MailMessageDto. This is referred in velocity
* template file.
*
* @param emailType the email type
* @return the alert type
*/
private String getAlertType(String emailType) {
String alertType = IMailConstants.SYSTEM_ALERT_TEXT;
if (IMailConstants.REALTIME_EMAILTYPE.equalsIgnoreCase(emailType)) {
alertType = IMailConstants.REALTIME_ALERT_TEXT;
} else if (IMailConstants.OFFLINE_EMAILTYPE.equalsIgnoreCase(emailType)) {
alertType = IMailConstants.OFFLINE_ALERT_TEXT;
}
return alertType;
}
/**
* Fetch the name of velocity template file based on the emailType. Used by
* Velocity Engine.
*
* @param emailType the email type
* @return the template name
*/
private String getTemplateName(String emailType) {
String templateName = IMailConstants.SYSTEM_ALERT_VM;
if (IMailConstants.REALTIME_EMAILTYPE.equalsIgnoreCase(emailType)) {
templateName = IMailConstants.REALTIME_ALERT_VM;
} else if (IMailConstants.OFFLINE_EMAILTYPE.equalsIgnoreCase(emailType)) {
templateName = IMailConstants.OFFLINE_ALERT_VM;
}
return templateName;
}
/**
* Transform MailMessageDto to MimeMessage.
*
* @param mailDto the mail dto
* @return the mime message
*/
//public MimeMessage transform(final MailMessageDto mailDto,final CommonsMultipartFile file) {
public MimeMessage transform(MailMessageDto mailDto, final MultipartFile file) {
LOG.debug("MailMessageTransformer.transform.mailDto:::" + mailDto);
if (mailDto == null) {
return null;
}
if (mailDto.getEncoding() == null) {
mailDto.setEncoding(IMailConstants.DEFAULT_ENCODING);
}
if (mailDto.getTemplateName() == null
|| !mailDto.getTemplateName().endsWith(IMailConstants.VELOCITY_TEMPLATE_EXTN)) {
mailDto.setTemplateName(getTemplateName(mailDto.getEmailType()));
}
mailDto.setText(mailDto.getText().replaceAll(System.lineSeparator(), IMailConstants.HTML_NEW_LINE));
MimeMessage mimeMessage = null;
try {
String attachName = file.getOriginalFilename();
mimeMessage = mailSender.createMimeMessage();
MimeMessageHelper message = new MimeMessageHelper(mimeMessage);
message.setTo(mailDto.getTo());
message.setFrom(mailDto.getFrom());
message.setSubject(mailDto.getSubject());
message.setText(getMailContent(mailDto), IMailConstants.TRUE);
message.setSentDate(new Date(System.currentTimeMillis()));
message.addAttachment(attachName, new InputStreamSource() {
@Override
public InputStream getInputStream() throws IOException {
return file.getInputStream();
}
});
if (null != mailDto.getBcc()) {
message.setBcc(mailDto.getBcc());
}
if (null != mailDto.getBcc()) {
message.setCc(mailDto.getCc());
}
if (null != mailDto.getReplyTo() && !mailDto.getReplyTo().isEmpty()) {
message.setReplyTo(mailDto.getReplyTo());
}
}
catch (MessagingException msgex) {
LOG.error("MailMessageTransformer.transformMime.Exception::: MessagingException", msgex);
}
catch (MailException mailex) {
LOG.error("MailMessageTransformer.transformMime.Exception::: MailException ", mailex);
}
catch (Exception ex) {
LOG.error("MailMessageTransformer.transformMime.Exception::: Exception", ex);
}
LOG.debug("MailMessageTransformer.transformMime.mimeMessage:::" + mimeMessage);
return mimeMessage;
}
}
<int:channel id="outboundMailChannel"/>
<int:channel id="confirmationChannel"/>
<int:gateway id="mailGateway" service-interface="com.infra.mail.MailGateway"
default-request-channel="xfromMailChannel" default-reply-channel="confirmationChannel" error-channel="errorChannel">
<int:method name="sendMail" payload-expression="#args[0] + #args[1]"> </int:method>
</int:gateway>
<int:transformer input-channel="xfromMailChannel" output-channel="outboundMailChannel"
ref="mailTransformer" method="transform">
<int:poller fixed-rate="60000" max-messages-per-poll="100"/>
</int:transformer>
<!-- Configure Mail Sender -->
<int-mail:outbound-channel-adapter channel="outboundMailChannel" mail-sender="mailSender"/>
<bean id="mailMessage" scope="prototype">
<property name="from" value="${mail.user2}"/>
<property name="replyTo" value="${mail.user3}"/>
</bean>
<bean id="mailTransformer" class="com.infra.mail.MailMessageTransformer"/>
</bean>
<int:service-activator id="mailErrorChannelActivator" input-channel="errorChannel" ref="errorHandler" method="handleMailError"/>
<bean id="errorHandler" class="com.infra.audit.ErrorHandler"/>
<int:channel-interceptor ref="infraInterceptor" pattern="*" order="3"/>
<bean id="infraInterceptor" class="com.infra.audit.infraInterceptor"/>
<int:channel id="sftpErrorChannel" />
<int:chain input-channel="xfromMailChannel" output-channel="outboundMailChannel">
<int:header-enricher>
<int:error-channel ref="errorChannel" />
</int:header-enricher>
<int:poller fixed-rate="6000" max-messages-per-poll="1"/>
</int:chain>
**The Gateway file**
public interface MailGateway {
/**
* Send mail.
*
* @param mailDto the mail dto
*/
@Gateway
public void sendMail(MailMessageDto mailDto, MultipartFile file);
}
答案 0 :(得分：2)
你在lib文件夹中添加mailapi.jar然后在为mailsend创建bean时添加xml文件
<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
<property name="host" value="smtp.gmail.com" />
<property name="port" value="587" />
<property name="username" value="yourmailid" />
<property name="password" value="password" />
<property name="javaMailProperties">
<props>
<prop key="mail.transport.protocol">smtp</prop>
<prop key="mail.smtp.auth">true</prop>
<prop key="mail.smtp.starttls.enable">true</prop>
</props>
</property>
</bean>
控制器代码
@RequestMapping(value="/sendMail.do",method=RequestMethod.POST)
public ModelAndView sendMail(@RequestParam("email")String email){
ModelAndView model = new ModelAndView("redirect:login.do");
List<User_master> userList = adminService.getAllUser();
for(User_master user: userList)
{
String e = user.getUser_Email();
if(e.equals(email))
{
String Subject="Forget Username and Password";
String username = user.getUser_Name();
String password = user.getUser_Password();
String message = "User Name : "+ username + " and " +"Password : "+ password;
SimpleMailMessage obj_email = new SimpleMailMessage();
obj_email.setTo(email);
obj_email.setSubject(Subject);
obj_email.setText(message);
mailSender.send(obj_email);
return model;
}
else
{
}
}
return model;
}
答案 1 :(得分：1)
首先：
@Gateway
public void sendMail(MailMessageDto mailDto, MultipartFile file);
第二
public MimeMessage transform(MailMessageDto mailDto, final MultipartFile file) {
请仔细阅读Spring Integration Manual。
所以，你应该在这里理解Spring Integration（和任何Messaging）与Message完全一致。 Framework非常荣幸它允许我们使用POJO方法调用样式交互，但我们应该遵循简单的规则。
payload只有一个方法参数。是的，在某些地方，例如@Publisher，我们可以使用SpEL作为@Payload值来从多个参数构建payload，但通常只有其中一个可以作为payload：或者标有@Payload的标记，或者Map<String, Object>不标记为MessageHeaders的标记。
您可能不会使用@Payload对其进行标记，但是您必须对所有其他人进行类似操作 - 请使用@Header进行标记。
因此，要解决您的问题，您应该这样做：
@Gateway
public void sendMail(MailMessageDto mailDto, @Header("file") MultipartFile file);
和
public MimeMessage transform(MailMessageDto mailDto, @Header("file") final MultipartFile file) {
答案 2 :(得分：0)
DateFormat df = new SimpleDateFormat("dd/MM/yy HH:mm:ss");
Calendar calobj = Calendar.getInstance();
String date1 = df.format(calobj.getTime());
System.out.println(df.format(calobj.getTime()));
try {
// Email data
String Email_Id = "ypur email";
String password = "your pswrd";
String recipient_mail_id = "client email";
String mail_subject = "Attendance Report";
System.out.println(sentEmailFrom);
System.out.println(emailPassword);
System.out.println(sentEmailTo);
// Set mail properties
Properties props = System.getProperties();
String host_name = "smtp.gmail.com";
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", host_name);
props.put("mail.smtp.user", Email_Id);
props.put("mail.smtp.password", password);
props.put("mail.smtp.port", "587");
props.put("mail.smtp.auth", "true");
Session session = Session.getDefaultInstance(props);
MimeMessage message = new MimeMessage(session);
try {
// Set email data
message.setFrom(new InternetAddress(Email_Id));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(recipient_mail_id));
message.setSubject(mail_subject);
MimeMultipart multipart = new MimeMultipart();
BodyPart messageBodyPart = new MimeBodyPart();
// Set key values
Map<String, String> input = new HashMap<String, String>();
input.put("User", presentUser.toString());
input.put("Date", date1);
input.put("Content In", "English");
input.put("Absent", absentUser);
input.put("Late", lateUser);
// HTML mail content
ClassLoader loader = SendMailService.class.getClassLoader();
URL url = loader.getResource("mailTemplate.html");
String path = url.toString().replace("file:", "");
System.out.println(path);
String htmlText = readEmailFromHtml(path, input);
messageBodyPart.setContent(htmlText, "text/html");
multipart.addBodyPart(messageBodyPart);
message.setContent(multipart);
// Conect to smtp server and send Email
Transport transport = session.getTransport("smtp");
transport.connect(host_name, Email_Id, password);
transport.sendMessage(message, message.getAllRecipients());
transport.close();
log.info("Mail Sent Successfully..!");
} catch (MessagingException ex) {
} catch (Exception ae) {
ae.printStackTrace();
}
} catch (Exception exception) {
exception.printStackTrace();
}
}
// Method to replace the values for keys
protected String readEmailFromHtml(String filePath, Map<String, String> input) {
String msg = readContentFromFile(filePath);
try {
Set<Entry<String, String>> entries = input.entrySet();
for (Map.Entry<String, String> entry : entries) {
msg = msg.replace(entry.getKey().trim(), entry.getValue().trim());
}
} catch (Exception exception) {
exception.printStackTrace();
}
return msg;
}
// Method to read HTML file as a String
private String readContentFromFile(String fileName) {
StringBuffer contents = new StringBuffer();
try {
// use buffering, reading one line at a time
BufferedReader reader = new BufferedReader(new FileReader(fileName));
try {
String line = null;
while ((line = reader.readLine()) != null) {
contents.append(line);
contents.append(System.getProperty("line.separator"));
}
} finally {
reader.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
return contents.toString();
}
}