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Downloading attachments from unseen messages

I work on university project in java. I have to download attachments from new emails using GMAIL API.
I successfully connected to gmail account using OAuth 2.0 authorization.
private static final List<String> SCOPES = Collections.singletonList(GmailScopes.GMAIL_READONLY);
I tried to get unseen mails using
ListMessagesResponse listMessageResponse = service.users().messages().list(user).setQ("is:unseen").execute();
listMessageResponse is not null but when I call method .getResultSizeEstimate() it returns 0
also I tried to convert listMessageResponse to List < Message > (I guess this is more usable) using
List<Message> list = listMessageResponse.getMessages();
But list launches NullPointerException
Then tried to get each attachment with
for(Message m : list) {
List<MessagePart> part = m.getPayload().getParts();
for(MessagePart p: part) {
if(p.getFilename()!=null && p.getFilename().length()>0) {
System.out.println(p.getFilename()); // Just to check attachment filename
}
}
}
Is my approach correct (if not how to fix it) and how should I download those attachments.
EDIT 1:
Fixed q parameter, I mistakenly wrote is:unseen instead of is:unread.
Now app reaches unread mails successfully.
(For example there was two unread mails and both successfully reached, I can get theirs IDs easy).
Now this part trows NullPointerException
List<MessagePart> part = m.getPayload().getParts();
Both messages have attachments and m is not null (I get ID with .getID())
Any ideas how to overcome this and download attachment?
EDIT 2:
Attachments Downloading part
for(MessagePart p : parts) {
if ((p.getFilename() != null && p.getFilename().length() > 0)) {
String filename = p.getFilename();
String attId = p.getBody().getAttachmentId();
MessagePartBody attachPart;
FileOutputStream fileOutFile = null;
try {
attachPart = service.users().messages().attachments().get("me", p.getPartId(), attId).execute();
byte[] fileByteArray = Base64.decodeBase64(attachPart.getData());
fileOutFile = new FileOutputStream(filename); // Or any other dir
fileOutFile.write(fileByteArray);
fileOutFile.close();
}catch (IOException e) {
System.out.println("IO Exception processing attachment: " + filename);
} finally {
if (fileOutFile != null) {
try {
fileOutFile.close();
} catch (IOException e) {
// probably doesn't matter
}
}
}
}
}
Downloading working like charm, tested app with different type of emails.
Only thing left is to change label of unread message (that was reached by app) to read. Any tips how to do it?
And one tiny question:
I want this app to fetch mails on every 10 minutes using TimerTask abstract class. Is there need for manual "closing" of connection with gmail or that's done automatically after run() method iteration ends?
#Override
public void run(){
// Some fancy code
service.close(); // Something like that if even exists
}

I don't think ListMessagesResponse ever becomes null. Even if there are no messages that match your query, at least resultSizeEstimate will get populated in the resulting response: see Users.messages: list > Response.
I think you are using the correct approach, just that there is no message that matches your query. Actually, I never saw is:unseen before. Did you mean is:unread instead?
Update:
When using Users.messages: list only the id and the threadId of each message is populated, so you cannot access the message payload. In order to get the full message resource, you have to use Users.messages: get instead, as you can see in the referenced link:
Note that each message resource contains only an id and a threadId. Additional message details can be fetched using the messages.get method.
So in this case, after getting the list of messages, you have to iterate through the list, and do the following for each message in the list:
Get the message id via m.getId().
Once you have retrieved the message id, use it to call Gmail.Users.Messages.Get and get the full message resource. The retrieved message should have all fields populated, including payload, and you should be able to access the corresponding attachments.
Code sample:
List<Message> list = listMessageResponse.getMessages();
for(Message m : list) {
Message message = service.users().messages().get(user, m.getId()).execute();
List<MessagePart> part = message.getPayload().getParts();
// Rest of code
}
Reference:
Class ListMessagesResponse
Users.messages: list > Response

Difficulties sending multipart/form-data request via Postman

please, this is y concern: I'll like to know how to query a web service defined as in the below code using postman for test purposes.
PS: I can't change the method signature
I have a web service like this :
#POST
#Path("/uploadOpenAccountRequestFiles/{requestId}")
#Consumes({MediaType.APPLICATION_JSON,MediaType.MULTIPART_FORM_DATA})
public Response uploadOpenAccountRequestFiles(#PathParam("requestId") String requestId,
MultipartFormDataInput multipartFormDataInput)
throws JsonGenerationException, JsonMappingException, IOException {
initContext();
logger.info("DIGIBANK : uploadOpenAccountRequestFiles END: ");
String msge = "";
try {
digiBean.saveToserver(requestId, multipartFormDataInput);
} catch (Exception e) {
msge = e.getMessage();
e.printStackTrace();
}
org.af.webservice.Response resp = new org.af.webservice.Response(
request.getSession().getId(), "uploadOpenAccountRequestFiles", "",
msge.equalsIgnoreCase("OK") ? true : false, msge.equalsIgnoreCase("OK") ? false : true, "",
msge.equalsIgnoreCase("OK") ? true : false, "Boolean", msge);
logger.info("DIGIBANK : uploadOpenAccountRequestFiles END: ");
return Response.ok().entity(mapper.writeValueAsString(resp)).build();
}
this is are images of my configurations:
enter image description here
enter image description here

For calling that service, you need to pass requestId like below:
http://localhost:8080/uploadOpenAccountRequestFiles/requestId-value-here
For sending MultiPart data such as a file, you need to select form-data option in the body section in Postman and select the file by selecting the File dropdown. Also, make sure to set the appropriate headers for the request.
Check the below stackoverflow answer for more details:
Tool for sending multipart/form-data request

The steps of uploading a file through postman along with passing some input data along with the multipart request is very well discussed in below blog along with the screenshot. In this blog, the api code is written in node js. You can go through it once. It may give some information.
https://jksnu.blogspot.com/2021/09/how-to-create-post-request-with.html

Java Spark Framework - request body lost after middleware

I am using Spark framework for my application.
I have a middleware which checks (among other things) if the body is of JSON format:
// Middleware
before((req, res) -> {
// Method check
if (!req.requestMethod().equals("POST")) {
halt(403, "{\"result\":\"ERR\",\"errMsg\":\"Only POST allowed!\",\"code\":403}");
}
// JSON Check
JSONObject body_json = new JSONObject();
try {
body_json = new JSONObject(req.body());
} catch (JSONException e) {
halt(403, "{\"result\":\"ERR\",\"errMsg\":\"No valid JSON!\",\"code\":403}");
}
// At this point (end of middleware) the request body is still unchanged !
});
Then I have my normal function for processing POST requests:
post("/post_some_data", (req, res) -> {
String body = req.body() // This string is empty !!
int length = req.contentLength(); // This remain unchanged
});
But the request body suddenly becomes empty (other attributes and headers remain unchanged).
Is that a bug or am I doing something wrong ??

There was a bug in the spark framework. Updating the library to the 2.1 version will solve this and all of the similar problems.

How to get SoapUI request and response XML in java

I'm using the SoapUI API as part of an existing java project.
The application should save the request and response XML in an specific report file.
I wonder if it's possible to get those requests and responses via the API.
The method invoking the TestCaseRunner looks like this
protected void checkTestCase(TestCase testCase) {
TestCaseRunner tr = testCase.run(null, false);
for (TestStepResult tcr : tr.getResults()) {
String status = tcr.getStatus();
String time = tcr.getTimeTaken() + "ms";
/* How to get XML messages?
* String request =
* String response =
*/
}
}

Depending on exactly what kind of test steps you have they might be an instance of a MessageExchange. Casting the TestStepResult to a MessageExchange and calling getRequestContent / getResponseContent might do the trick.
String request = ((MessageExchange)tcr).getRequestContent();
String response = ((MessageExchange)tcr).getResponseContent();

I have used the following way to get the response from the API CAll performed:
runner = testRunner.runTestStepByName("Your Test Case name");
// Here we take the response in ms of the API call
timeTaken = runner.response.timeTaken;
// here we get the HTTP response code.
responseCode = runner.getResponseHeaders()."#status#";
// here we get the response content
String response = runner.getResponseContent();
// here we get the API call endpoint -> in case you need to print it out.
String endPoint = runner.getEndpoint();

java axis web service client setMaintainSession on multiple services (cookies?)

I'm implementing a client to a web service (and the guys maintaining the web service have been a litte unresponsive..) I've used axis and WSDL2Java to generate java classes and I can call their login-method on their authentication-service ok, and get a sessionId back (eg z4zojhiqkw40lj55kgtn1oya). However, it seems that i cannot use this sessionId as a parameter anywhere. Even a call to their hasSession()-method directly after login returned false. I managed to solve this by setting setMaintainSession(true) on the Locator-object for this service. But the problem is, that this first service, the Authentication-service, is only used for authentification. If I then call setMaintainSession(true) on eg ProductServiceLocator, and call some method on it, I will get an error because of unauthenticated session. I have to find a way to share the session between the services on the client side.
Looking on their php code example-it seeems like they are storing the session in a cookie. How can I mimic this behaviour in my java client?
php-code:
$authentication = new SoapClient ( "https://webservices.24sevenoffice.com/authenticate/authenticate.asmx?wsdl", $options );
// log into 24SevenOffice if we don't have any active session. No point doing this more than once.
$login = true;
if (!empty($_SESSION['ASP.NET_SessionId'])){
$authentication->__setCookie("ASP.NET_SessionId", $_SESSION['ASP.NET_SessionId']);
try{
$login = !($authentication->HasSession()->HasSessionResult);
}
catch ( SoapFault $fault ) {
$login = true;
}
}
if( $login ){
$result = ($temp = $authentication->Login($params));
// set the session id for next time we call this page
$_SESSION['ASP.NET_SessionId'] = $result->LoginResult;
// each seperate webservice need the cookie set
$authentication->__setCookie("ASP.NET_SessionId", $_SESSION['ASP.NET_SessionId']);
// throw an error if the login is unsuccessful
if($authentication->HasSession()->HasSessionResult == false)
throw new SoapFault("0", "Invalid credential information.");
}
My code is the following:
AuthenticateLocator al = new AuthenticateLocator();
al.setMaintainSession(true);
Credential c = new Credential(CredentialType.Community,username,password,guid);
AuthenticateSoap s = al.getAuthenticateSoap();
String sessionId = s.login(c);
System.out.println("Session id was: "+sessionId);
System.out.println("Has Session: "+s.hasSession()); //Hooray, now works after setMaintainSession(true)
//And now trying to call another Service
CompanyServiceLocator cl = new CompanyServiceLocator();
cl.setMaintainSession(true);
CompanyServiceSoap css = cl.getCompanyServiceSoap();
css.getCountryList(); //FAILS!
So what can I do to make this work?

Hooray, I finally solved it myself :-D
Thanx a lot to the excellent article at http://www.nsftools.com/stubby/ApacheAxisClientTips.htm
I had to do the following with my code to make it work:
CompanyServiceLocator cl = new CompanyServiceLocator();
cl.setMaintainSession(true);
CompanyServiceSoap css = cl.getCompanyServiceSoap();
((Stub)css)._setProperty(HTTPConstants.HEADER_COOKIE, "ASP.NET_SessionId="+sessionId); //New line that does the magic
css.getCountryList(); //SUCCESS :-D
Operating in the high-level abstraction of the autogenerated classes, it was unknown to me that casting the service classes to Stub would expose more methods and properties that could be set. Good to know for later I guess :-)