我想通过Java中的Mailjet发送带有附件的邮件。发送没有附件的简单邮件时我没有问题,但是当我尝试添加附件时出现此错误:
400
[{"ErrorIdentifier":"314408e7-e528-469f-9361-2eb3c24b2b32","ErrorCode":"mj-0004","ErrorRelatedTo":["Messages.Attachments"],"ErrorMessage":"Type mismatch. Expected type \"Attachments\".","StatusCode":400}]
我的代码如下:
@Service
public class MailJetSenderImp implements MailJetSender {
Message message = new Message();
@Override
public ResponseEntity<Message> sendMail(String To, String Body, String Subject, File attachment) throws MailjetSocketTimeoutException, JSONException, IOException {
FileInputStream fileInputStream = new FileInputStream(attachment);
int byteLength=(int) attachment.length(); //bytecount of the file-content
byte[] filecontent = new byte[byteLength];
fileInputStream.read(filecontent,0,byteLength);
byte[] encoded = Base64.getEncoder().encode(filecontent);
MailjetRequest email = new MailjetRequest(Emailv31.resource)
.property(Emailv31.MESSAGES, new JSONArray()
.put(new JSONObject()
.put(Emailv31.Message.FROM, new JSONObject()
.put("Email","xxxxxx@gmail.com" )
.put("Name", "xxxxx"))
.put(Emailv31.Message.TO, new JSONArray()
.put(new JSONObject()
.put("Email", To)))
.put(Emailv31.Message.SUBJECT, Subject)
.put(Emailv31.Message.TEXTPART, "")
.put(Emailv31.Message.HTMLPART, Body)
.put(Emailv31.Message.ATTACHMENTS,encoded)));
final String mailjetApiKey = "xxxxxxxx";
final String mailjetSecretKey = "yyyyyyyy";
MailjetClient client = new MailjetClient(
mailjetApiKey, mailjetSecretKey, new ClientOptions("v3.1"));
try {
// trigger the API call
MailjetResponse response = client.post(email);
// Read the response data and status
System.out.println(response.getStatus());
System.out.println(response.getData());
message.setCode(response.getStatus());
message.setMessage(response.getData().toString());
return ResponseEntity.status(HttpStatus.OK).body(message);
} catch (MailjetException e) {
System.out.println("Mailjet Exception: " + e);
message.setCode(400);
message.setMessage("could not send email");
return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(message);
}
}
}
我在(.put(Emailv31.Message.ATTACHMENTS,encoded))上收到错误消息;
答案 0 :(得分:1)
这是发送邮件附件的Java代码
ATTACHMENTS数据是一个包含3个字段的JSON数组:
ContentType -附件的内容类型
文件名-收件人将看到的文件附件的名称
Base64Content -Base64编码的文件数据为字符串
因此,将文件内容编码为String(我在这里使用了来自mailjet客户端JAR本身的Base64编码器)。 filecontent
是byte[]
。硬编码的PDF文件代码示例如下:
java.nio.file.Path pdfPath =
java.nio.file.Paths.get("c:\\D\\sample.pdf");
byte[] filecontent = java.nio.file.Files.readAllBytes(pdfPath);
String fileData = com.mailjet.client.Base64.encode(filecontent);
接下来,使用此代码发送附件,其他代码保持不变。 此处的示例适用于PDF文件,请正确选择MIME类型
.put(Emailv31.Message.ATTACHMENTS,
new JSONArray().put(new JSONObject().put("ContentType", "application/pdf")
.put("Filename", "abc.pdf")
.put("Base64Content", fileData)))
.put(Emailv31.Message.HTMLPART,...