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Found javax.mail.AuthenticationFailedException: failed to connect, no password specified? while listenning new mails where the password is correct

This exception i got while connecting imap gmail store using spring integration. Please have a look at the code
{#Autowired
private IntegrationFlowContext flowContext;
public void startMail(String user, String pw) {
IntegrationFlow flow = IntegrationFlows
.from(Mail.imapIdleAdapter(imapUrl(user, pw))
.javaMailProperties(p -> p.put("mail.debug", "true"))
//.userFlag("testSIUserFlag") // needed by the SI test server - not needed if server supports /SEEN
.headerMapper(new DefaultMailHeaderMapper()))
.handle(System.out::println)
.get();
this.flowContext.registration(flow).register();
}}
where imapUrl(user, pw) returns the url as imap://xyz.abc#gmail.com:xxxxx#imap.gmail.com:993/INBOX
please help me to get rid of this exception.
Note: i read one of the post here saying need to escape '#' in credentials. As am novice to java spring boot, please let me know how i can escape '#'

GMail doesn't support JavaMail clients, by default; you have to enable "less secure clients" (or something similar).
use %40 to replace #.
https://www.werockyourweb.com/url-escape-characters/

Thanks Artem! It worked. Actually when it is a #gmail.com. don't need this suffix in the IMAP URL - just your account. For example my one when I connect is like this:
imaps://clericsmail:[APP_PASSWORD]#imap.gmail.com/INBOX
where APP_PASSWORD I can't show you because that one is what I configured for according those GMail recommendations.

HttpURLConnection authentication mode

I'm using HttpURLConnection class to manage HTTP connections in my Android app. Problem is, on some servers, I have a code 401 using an URL which working on a Internet navigator. I initialize connection with basic authentication, but I think these servers need an other mode. I know it works with libCURL and the following instruction:
curl_easy_setopt(pCurlHandle, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
But is there an way to doing something like that on Android? Currently, I do that:
...
connection.setRequestProperty("Authorization", "Basic " + Base64.encode("username:password"));
...
I tried with Authenticator too:
Authenticator.setDefault(new Authenticator() {
#Override
protected PasswordAuthentication getPasswordAuthentication()
{
return new PasswordAuthentication("username", "password".toCharArray());
}
});
But I still have a 401 in my app. Any idea?

Well, this post really helped me (but I don't use Authenticator class at all) and now my code do the job like that (if authentication is needed):
Initialize my HttpURLConnection object with Basic authentication (see the first Java sample in my question's code)
Test if I receive a code 401 and if it is, check if server was excepted for a Digest authentication analyzing response headers.
Retry with a manually-built Digest request property (see the post I mentioned)
And it works!
I hope this answer'll help someone!

Set Proxy Username and Password in java code

I develop a code to access a SOAP-Server via proxy and regarding to the description here I can set a global Proxy. Although my question seems Naive but I have not find any guide how to set Username and Password for this proxy setting in my java code?

you can at runtime get the System's properties and set all what you need to configurate the proxy...
Example:
System.getProperties().put("http.proxyHost", "myProxyURL");
System.getProperties().put("http.proxyPort", "myProxyPort");
System.getProperties().put("http.proxyUser", "myUserName");
System.getProperties().put("http.proxyPassword", "myPassword");

After some days I found the solution in my case and I try to explain it here.
It is important to know which kind of SOAP Client service you have wrote. In my case I used CXF 3.1.7 to generate Java code. To be more explicit I had a WSDL file and Generated the code via wsdl2java plugin in maven with the mentioned version.
In the level of the WebService the follwoing can be done in code to enter the proxy Setting
private void setProxySetting(EventPortType port) {
try{
Client client = ClientProxy.getClient(port);
HTTPConduit http = (HTTPConduit) client.getConduit();
http.getClient().setProxyServer("***host***");
http.getClient().setProxyServerPort(80);
http.getProxyAuthorization().setUserName("***username***");
http.getProxyAuthorization().setPassword("***password***");
}catch (Exception e) {
logger.error("Please Enter your proxy setting in MyClass class", e);
}
}
The port is comming from the Service Level that I got like this
EventService es = new EventService();
EventPortType port = es.getEventPort();
setProxySetting();

HTTP request to orchid throws Warning

I am working with orchid library and this is my code:
(...)
Proxy proxy = new Proxy(Proxy.Type.SOCKS,new InetSocketAddress("localhost",9150));
httpUrlConnetion = (HttpURLConnection) website.openConnection(proxy);
httpUrlConnetion.setRequestProperty("User-Agent","any user-agent");
httpUrlConnetion.setConnectTimeout(5000);
httpUrlConnetion.setReadTimeout(20000);
return Jsoup.parse(IOUtils.toString(httpUrlConnetion.getInputStream()));
And I am getting this warning:
WARNING: Your application is giving Orchid only an IP address. Applications that do DNS resolves themselves may leak information. Consider using Socks4a (e.g. via privoxy or socat) instead. For more information please see https://wiki.torproject.org/TheOnionRouter/TorFAQ#SOCKSAndDNS
I started on this answer to setup orchid.
I see this post but dind't get it working under http.
How to solve it? or any other way to easy use Tor with java?
Thanks!

In your mentioned thread you are using the URL class for resolving the URL to an IP adddress which will use the Native DNS-resolving technique (which is not tunneled through Tor).
You could use SilverTunnel-NG instead, this will also do the DNS-resolving over Tor.
Check out an example implementation here.

Download xml.gz file with HttpsURLConnection

I am trying to download an xml.gz file from a remote server with HttpsURLConnection in java, but I am getting an empty response. Here is a sample of my code:
URL server = new URL("https://www.myurl.com/path/sample_file.xml.gz");
HttpsURLConnection connection = (HttpsURLConnection)server.openConnection();
connection.connect();
When I try to get an InputStream from the connection, it is empty. (If I try connection.getInputStream().read() I get -1) The file I am expecting is approximately 50MB.
To test my sanity, I aslo tried entering the exact same url in my browser, and it did return the file I needed. Am I missing something? Do I have to set some sort of parameter in the connection? Any help/direction is much appreciated.

Is any exception being logged? Is the website presenting a self-signed SSL certificate, or one that is not signed by a CA? There are several reasons why it might work fine in your browser (the browser might have been told to accept self-signed certs from that domain) and not in your code.
What are the results of using curl or wget to fetch the URL?
The fact that the InputStream is empty / result from the InputStream.read() == -1 implies that there is nothing in the stream to read, meaning that the stream was not able to even be set up properly.
Update: See this page for some info on how you can deal with invalid/self-signed certificates in your connection code. Or, if the site is presenting a certificate but it is invalid, you can import it into the keystore of the server to tell Java to trust the certificate. See this page for more info.

Verify the response code is 200
Check that connection.contentType to verify the content type is recognized
You may need to add a Content-Handler for the GZ mime type, which I can't recall off the top of my head.
After the comment describing the response code as 3xx,
Set 'connection.setFollowRedirects(true)'
Should fix it.

Turns out the download wasn't working because the remote server was redirecting me to a new url to download the file. Even though connection.setFollowRedirects(true) was set, I still had to manually set up a new connection for the redirected URL as follows:
if (connection.getResponseCode() == 302 && connection.getHeaderField("location") != null){
URL server2 = new URL(connection.getHeaderField("location"));
HttpURLConnection connection2 = (HttpURLConnection)server2.openConnection();
connection2.connect();
InputStream in = connection2.getInputStream();
}
After that, I was able to retrieve the file from the input stream. Thanks for all your help guys!