Java Spring启动电子邮件发送及附件

出现意外错误（类型=内部服务器错误，状态=500）。 未能将类型为“org.springframework.web.multipart.support.StandardMultipartTTpServletRequest$StandardMultipartFile”的值转换为所需类型“org.springframework.web.multipart.commons.CommonsMultipartFile”；嵌套异常为java.lang.IllegalStateException:无法将类型为“org.springframework.web.multipart.support.StandardMultipartttpServletRequest$StandardMultipartFile”的值转换为所需类型“org.springframework.web.multipart.commons.CommonsMultipartFile”：找不到匹配的编辑器或转换策略

我的jsp页面

My Contact.java和EmailController.java

<pre>
public class Contact {

@NotNull(message = "Name can't be blank.")
private String name;

@NotNull(message = "Name can't be blank.")
private String phone;

@NotNull(message = "Email can't be blank.")
private String email;

@NotNull(message = "Subject can't be blank.")
private String subject;

@NotNull(message = "Comment can't be blank.")
private String comment;

private CommonsMultipartFile attachment;
//getters
//setters
}
</pre>

My EmailController.java

<pre>
@RequestMapping(value ="/sendAttachmentEmail", consumes = "multipart/form-data", method = RequestMethod.POST)
public ModelAndView sendEmailWithAttachment(HttpServletRequest request, final @RequestParam("attachment") CommonsMultipartFile attachFile) throws MessagingException {
try {
ModelAndView mav =new ModelAndView("success");
log.info("Spring Boot - Sending Attachment Email...");
// reads form input
final String email = request.getParameter("mailTo");
final String phone = request.getParameter("phone");
final String name = request.getParameter("name");
final String subject = request.getParameter("subject");
final String comment = request.getParameter("comment");

    log.info(name+" "+phone+" "+email+" "+subject+" "+comment);

    if ((attachFile != null) && (attachFile.getSize() > 0) && (!attachFile.equals(""))) {
        log.info("FileName====="+attachFile.getOriginalFilename());
    } else {
        log.info("FileName====="+attachFile.getOriginalFilename()+" "+attachFile);
    }
    Contact contact = new Contact();
    contact.setName(name);
    contact.setPhone(phone);
    contact.setEmail(email);
    contact.setSubject(subject);
    contact.setComment(comment);

    mav.addObject("name", contact.getName());
    log.info("Sening Attachment Email...");
    emailService.sendAttachmentEmail(contact, attachFile);
    log.info("Done...");
    return mav;
    } catch (Exception e) {
        log.error(e.getMessage());
        return new ModelAndView("attachment-email");
    }
}
</pre>

公共类联系人{
@NotNull（message=“Name不能为空。”）
私有字符串名称；
@NotNull（message=“Name不能为空。”）
私人电话；
@NotNull（message=“电子邮件不能为空。”）
私人字符串电子邮件；
@NotNull（message=“Subject不能为空。”）
私有字符串主题；
@NotNull（message=“注释不能为空。”）
私有字符串注释；
私有多部分文件附件；
//吸气剂
//二传手
}
My EmailController.java
<pre>
public class Contact {

@NotNull(message = "Name can't be blank.")
private String name;

@NotNull(message = "Name can't be blank.")
private String phone;

@NotNull(message = "Email can't be blank.")
private String email;

@NotNull(message = "Subject can't be blank.")
private String subject;

@NotNull(message = "Comment can't be blank.")
private String comment;

private CommonsMultipartFile attachment;
//getters
//setters
}
</pre>

My EmailController.java

<pre>
@RequestMapping(value ="/sendAttachmentEmail", consumes = "multipart/form-data", method = RequestMethod.POST)
public ModelAndView sendEmailWithAttachment(HttpServletRequest request, final @RequestParam("attachment") CommonsMultipartFile attachFile) throws MessagingException {
try {
ModelAndView mav =new ModelAndView("success");
log.info("Spring Boot - Sending Attachment Email...");
// reads form input
final String email = request.getParameter("mailTo");
final String phone = request.getParameter("phone");
final String name = request.getParameter("name");
final String subject = request.getParameter("subject");
final String comment = request.getParameter("comment");

    log.info(name+" "+phone+" "+email+" "+subject+" "+comment);

    if ((attachFile != null) && (attachFile.getSize() > 0) && (!attachFile.equals(""))) {
        log.info("FileName====="+attachFile.getOriginalFilename());
    } else {
        log.info("FileName====="+attachFile.getOriginalFilename()+" "+attachFile);
    }
    Contact contact = new Contact();
    contact.setName(name);
    contact.setPhone(phone);
    contact.setEmail(email);
    contact.setSubject(subject);
    contact.setComment(comment);

    mav.addObject("name", contact.getName());
    log.info("Sening Attachment Email...");
    emailService.sendAttachmentEmail(contact, attachFile);
    log.info("Done...");
    return mav;
    } catch (Exception e) {
        log.error(e.getMessage());
        return new ModelAndView("attachment-email");
    }
}
</pre>

@RequestMapping（value=“/sendAttachmentEmail”，consumes=“multipart/form data”，method=RequestMethod.POST）
public model和view sendmailwithattachment（HttpServletRequest请求，final@RequestParam（“附件”）commonmultipartfile attachFile）抛出消息异常{
试一试{
ModelAndView mav=新ModelAndView（“成功”）；
log.info（“Spring启动-发送附件电子邮件…”）；
//读取表单输入
最终字符串email=request.getParameter（“mailTo”）；
最终字符串phone=request.getParameter（“phone”）；
最终字符串名称=request.getParameter（“名称”）；
最终字符串subject=request.getParameter（“subject”）；
最终字符串注释=request.getParameter（“注释”）；
日志信息（姓名+电话+电子邮件+主题+评论）；
如果（（attachFile！=null）&&（attachFile.getSize（）>0）&（！attachFile.equals（“”））{
log.info（“文件名===”+attachFile.getOriginalFilename（））；
}否则{
log.info（“文件名===”+attachFile.getOriginalFilename（）+“”+attachFile）；
}
触点=新触点（）；
contact.setName（name）；
联系人：setPhone（电话）；
联系人：setEmail（email）；
联系人：setSubject（主题）；
contact.setComment（comment）；
mav.addObject（“name”，contact.getName（））；
log.info（“Sening附件电子邮件…”）；
emailService.sendAttachmentEmail（联系人，附件文件）；
log.info（“完成…”）；
返回mav；
}捕获（例外e）{
log.error（例如getMessage（））；
返回新模型和视图（“附件电子邮件”）；
}
}

My EmailServiceImpl.java

@凌驾
public void sendAttachmentEmail（联系人，CommonMultipartFile attachfile）引发MessaginException{
emailSender.send（新的MIMessagePreparator（）{
public void prepare（MimeMessage MimeMessage）引发异常{
MimeMessage message=emailSender.createMimeMessage（）；
mimessagehelper=new mimessagehelper（message，true，“UTF-8”）；//启用多部分标志！
String content=“嗨，”+contact.getName（）+“感谢您联系我们。PFB附件。
”；
setSubject（contact.getSubject（））；
setText（内容+“注释：”+contact.getComment（），true）；
setTo（contact.getEmail（））；
setFrom（env.getProperty（“spring.mail.username”）；
//确定是否有文件上载。如果有，请将其附加到客户端电子邮件
如果（（attachfile！=null）&&（attachfile.getSize（）>0）&（！attachfile.equals（“”））{
System.out.println（“\n附件名称？=”+attachfile.getOriginalFilename（）+“\n”）；
helper.addAttachment（attachfile.getOriginalFilename（），新InputStreamSource（）{
公共InputStream getInputStream（）引发IOException{
返回attachfile.getInputStream（）；
}
});
}否则{
System.out.println（“用户未选择任何附件。正在发送文本电子邮件”）；
}
}
});
}

提交按钮后，我收到上述错误，请提供帮助。

关键在于：无法将类型“org.springframework.web.multipart.support.StandardMultipartTTpServletRequest$StandardMultipartFile”的值转换为所需类型“org.springframework.web.multipart.commons.CommonsMultipartFile”：找不到匹配的编辑器或转换策略

换句话说，尝试更改控制器方法的签名

sendmailwithatachment

：

public ModelAndView sendEmailWithAttachment(HttpServletRequest request, final @RequestParam("attachment") StandardMultipartFile attachFile)

---

在控制器方法中使用

org.springframework.web.multipart.MultipartFile

而不是commonmultipartfile您好，正如您所建议的，我在控制器方法中使用org.springframework.web.multipart.MultipartFile而不是commonmultipartfile，但现在我遇到了这个错误“失败的邮件：javax.mail.SendFailedException:没有收件人地址”，我交叉检查了我的电子邮件地址，现在它是正确的。如何解决此错误？检查contact.getEmail（）中的实际内容。…我假设它必须为空？实际上…而不是使用

MimeMessage message=emailSender.createMimeMessage（））

。尝试使用在prepare方法中传递的mimeMessage…

mimeMessage mimeMessage

是的，非常感谢，先生…您好，我在春季没有得到标准的multipartfile类。您能告诉我它属于哪个包吗？我在我的一个项目中发现了类似的控制器。它可以工作。签名看起来像：public@RResponseBody响应上载（@RequestParam（“file”）MultipartFile文件，HttpServletRequest request）。MultipartFile是org.springframework.web.multipart.MultipartFile

<pre>
@Override
public void sendAttachmentEmail(Contact contact, CommonsMultipartFile attachfile) throws MessagingException {     
emailSender.send(new MimeMessagePreparator() {
public void prepare(MimeMessage mimeMessage) throws Exception {
MimeMessage message = emailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8"); // Enable the multipart flag!
String content = "Hi, <b>"+contact.getName()+"</b> Thank you for Contacting Us. PFB attachment.<br>";
helper.setSubject(contact.getSubject());
helper.setText(content+" <b>Comment:</b> "+ contact.getComment(), true);
helper.setTo(contact.getEmail());
helper.setFrom(env.getProperty("spring.mail.username"));

// Determine If There Is An File Upload. If Yes, Attach It To The Client Email              
if ((attachfile != null) && (attachfile.getSize() > 0) && (!attachfile.equals(""))) {
    System.out.println("\nAttachment Name?= " + attachfile.getOriginalFilename() + "\n");
    helper.addAttachment(attachfile.getOriginalFilename(), new InputStreamSource() {                   
        public InputStream getInputStream() throws IOException {
            return attachfile.getInputStream();
        }
    });
} else {
    System.out.println("No Attachment Is Selected By The User. Sending Text Email.");
}
        }
    });
}
</pre>

public ModelAndView sendEmailWithAttachment(HttpServletRequest request, final @RequestParam("attachment") StandardMultipartFile attachFile)