How to get full message body in Gmail?

Question

I want to get full message body. So I try:

Message gmailMessage = service.users().messages().get(\"me\", messageId).setFormat(\"full\").execute();


        

Answer 1

I found more interesting way how to resolve a full body message (and not only body):

System.out.println(StringUtils.newStringUtf8(   Base64.decodeBase64 (message.getRaw())));

Answer 2

I tried this way, since message.getPayload().getBody().getParts() was always null

import com.google.api.client.repackaged.org.apache.commons.codec.binary.Base64;
import com.google.api.client.repackaged.org.apache.commons.codec.binary.StringUtils;

(...)

Message message = service.users().messages().get(user, m.getId()).execute();
MessagePart part = message.getPayload();
System.out.println(StringUtils.newStringUtf8(Base64.decodeBase64(part.getBody().getData())));

And the result is pure HTML String

Answer 3

here is the solution in c# code gmail API v1 to read the email body content:

  var request = _gmailService.Users.Messages.Get("me", mail.Id);
                request.Format = UsersResource.MessagesResource.GetRequest.FormatEnum.Full;

and to solve the data error

 var res = message.Payload.Body.Data.Replace("-", "+").Replace("_", "/");
 byte[] bodyBytes = Convert.FromBase64String(res);


 string val = Encoding.UTF8.GetString(bodyBytes);

Answer 4

Base on the @Tholle comment I've made something like that

Message message = service.users().messages()
        .get(user, messageHolder.getId()).execute();

System.out.println(StringUtils.newStringUtf8(Base64.decodeBase64(
        message.getPayload().getParts().get(0).getBody().getData())));

Answer 5

To get the data from your gmailMessage, you can use gmailMessage.payload.parts[0].body.data. If you want to decode it into readable text, you can do the following:

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.StringUtils;

System.out.println(StringUtils.newStringUtf8(Base64.decodeBase64(gmailMessage.payload.parts[0].body.data)));

Answer 6

If you have the message (com.google.api.services.gmail.model.Message) you could use the following methods:

public String getContent(Message message) {
    StringBuilder stringBuilder = new StringBuilder();
    try {
        getPlainTextFromMessageParts(message.getPayload().getParts(), stringBuilder);
        byte[] bodyBytes = Base64.decodeBase64(stringBuilder.toString());
        String text = new String(bodyBytes, StandardCharsets.UTF_8);
        return text;
    } catch (UnsupportedEncodingException e) {
        logger.error("UnsupportedEncoding: " + e.toString());
        return message.getSnippet();
    }
}

private void getPlainTextFromMessageParts(List<MessagePart> messageParts, StringBuilder stringBuilder) {
    for (MessagePart messagePart : messageParts) {
        if (messagePart.getMimeType().equals("text/plain")) {
            stringBuilder.append(messagePart.getBody().getData());
        }

        if (messagePart.getParts() != null) {
            getPlainTextFromMessageParts(messagePart.getParts(), stringBuilder);
        }
    }
}

It combines all message parts with the mimeType "text/plain" and returns it as one string.