I'm trying to send emails to project managers whenever there is a change in their project staffing. For this i want to send an email from no-reply#example.com, how can i achieve this using spring boot?
Thanks in advance for the suggestions and answers.
Tried something like this:
#RequestMapping(value = "/sendEmail", method = { RequestMethod.GET }, produces = { "application/json" })
public ResponseEntity<CustomResponse> sendEmail() {
LOG.debug("Start sendEmail with data, toAddress");
HttpHeaders httpHeaders = commonUtil.setHeaders();
HttpStatus httpStatus = HttpStatus.OK;
CustomResponse customResp = new CustomResponse();
String description;
try {
String to = "bmanikanta415#gmail.com";
String from = "no-reply#example.com";
Properties props = System.getProperties();
Session session = Session.getDefaultInstance(props, null);
Message msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(from));
msg.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
msg.setSubject("Your Example.com account has been activated");
msg.setText("This is a test");
Transport.send(msg);
description = Constants.SUCCESS;
customResp = commonUtil.getCustomResponse(httpStatus, description, description);
} catch (
Exception e) {
LOG.error("Exception in sendEmail: {}", e);
description = Constants.FAILED;
customResp = commonUtil.getCustomResponse(httpStatus, description, description);
}
ResponseEntity<CustomResponse> responseEntity = new ResponseEntity<CustomResponse>(customResp, httpHeaders,
httpStatus);
LOG.debug("End sendEmail with return data: {}", responseEntity);
return responseEntity;
}
Related
I have an upload controller
// Multiple files upload
[HttpPost("upload/multiple")]
public IActionResult Multiple(IFormFile[] files)
{
try
{
// Put your code here
return StatusCode(200);
}
catch (Exception ex)
{
return StatusCode(500, ex.Message);
}
}
I am trying to use the IFormFile to get files for email attachments using MailKit
This is my email code
private async Task SendEmail()
{
try
{
// create email message
var email = new MimeMessage();
email.From.Add(MailboxAddress.Parse(sender));
email.To.Add(MailboxAddress.Parse(receiver));
email.Subject = emailsubject;
var multipart = new Multipart("mixed");
multipart.Add(new TextPart(TextFormat.Html) { Text = emailMessage });
foreach (var attachment in files)
{
var content = new MemoryStream();
attachment.CopyTo(content);
content.Position = 0;
var contentType = ContentType.Parse(attachment.ContentType);
var part = new MimePart(contentType.MimeType)
{
FileName = Path.GetFileName(attachment.FileName),
ContentTransferEncoding = ContentEncoding.Base64,
Content = new MimeContent(content),
};
multipart.Add(part);
}
email.Body = multipart;
//email.Body = new TextPart(TextFormat.Html) { Text = emailMessage};
// send email
using var smtp = new SmtpClient();
smtp.Connect(outgoingServer, outgoingPort, SecureSocketOptions.Auto);
smtp.Authenticate(userName, userPassword);
smtp.Send(email);
smtp.Disconnect(true);
}
catch (Exception ex)
{
NotificationService.Notify(NotificationSeverity.Error, "Send Email Error!", ex.Message, 7000);
}
}
}
This generates an error on the 'files' variable
"The name 'files' does not exist in the current content.
Can someone tell me what I am missing to pull the information from the controller for 'files'???
Here, in the Async Task SendEmail task, we have to set the parameter of type IFormFile like below,
private async Task sendEmail(IFormFile file)
Here is the Controller Code,
[HttpPost("send")]
public async Task<IActionResult> SendMail(IFormFile file)
{
try
{
await mailService.sendEmailAsync(file);
return Ok("Mail Sent!");
}
catch (Exception ex)
{
throw;
}
}
And We can't get IFormFile[] directly and pass it to the sendEmail method as a parameter. Instead we can create the model class with public List<IFormFile>? attachments{get;set;} and send the instance of the model class as a parameter to the sendEmail method.
In our project , we are trying to use camunda BPMN. using camunda standalone distro and deployed and running in Tomcat.
login as a admin user and able to access cockpit and task lists.But,when we try access the APIs using a Java client . we are getting an unauthorized (401) error. Though we are sending JSESSIONID as a “Cookie”
Tried both DefaultHttpClient and HttpURLConnection - It didn’t work out
Note : JSESSIONID is retrieved by calling the login api with admin username and password.
Help me to solve the issue
Attached below is the java client code
public static void main(String[] args) {
CamundaBMPNClient bpmnClient = new CamundaBMPNClient();
Map<Integer, String> cookieHeader = bpmnClient.getCookieHeader();
bpmnClient.getListofTasks(cookieHeader);
}
public Map<Integer, String> getCookieHeader() {
String jSessionID = null;
Map<Integer, String> headerValues = new HashMap<Integer, String>();
HttpClient httpClient = HttpClientBuilder.create().build();
HttpPost request = new HttpPost(
"http://localhost:8090/camunda-webapp-tomcat-standalone-7.2.0/"
+ "api/admin/auth/user/default/login/cockpit");
request.addHeader("content-type", "application/x-www-form-urlencoded");
request.addHeader("Accept", "application/json");
String jsonString = new Gson()
.toJson("username=admin&password=admin#123");
StringEntity params;
try {
params = new StringEntity(jsonString);
request.setEntity(params);
HttpResponse response = httpClient.execute(request);
Header[] cookieheader = response.getHeaders("Set-Cookie");
for (Header s : cookieheader) {
// Do your stuff here
System.out.println(s.getValue());
String[] str = s.getValue().split(";");
int i = 1;
for (String s1 : str) {
headerValues.put(i, s1.trim());
i++;
}
}
System.out.println("jSessionID::" + jSessionID);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return headerValues;
}
public void getListofTasks(Map<Integer, String> cookieHeader) {
int id = 0;
// DefaultHttpClient httpclient = new DefaultHttpClient();
HttpPost request = new HttpPost(
"http://localhost:8090/camunda-webapp-tomcat-standalone-7.2.0/api/engine/engine/default/task");
request.addHeader("Content-type", "application/json");
String[] arrJSessionID = cookieHeader.get(1).split("=");
System.out.println("" + arrJSessionID[1]);
CookieStore cookieStore = new BasicCookieStore();
BasicClientCookie cookie = new BasicClientCookie("JSESSIONID=",
arrJSessionID[1]);
cookie.setDomain("http://localhost:8090");
cookie.setPath("/camunda-webapp-tomcat-standalone-7.2.0/");
// cookie.setAttribute(ClientCookie.DOMAIN_ATTR, "true");
cookieStore.addCookie(cookie);
// httpclient.setCookieStore(cookieStore);
HttpClient httpclient = HttpClientBuilder.create()
.setDefaultCookieStore(cookieStore).build();
String jsonString = new Gson().toJson("{}");
StringEntity jsonStr;
try {
jsonStr = new StringEntity(jsonString);
request.setEntity(jsonStr);
HttpResponse response = httpclient.execute(request);
int statusCode = response.getStatusLine().getStatusCode();
Header[] header = response.getHeaders("Set-Cookie");
for (Header h : header) {
System.out.println(h.getValue());
}
System.out.println("statusCode::" + statusCode);
} catch (Exception e) {
e.printStackTrace();
}
}
I have the below code in a groovy class, I want to call this method asynchronously from various other groovy classes.
public void sendNotification(){
//async true
String from = ApplicationConfig.email_From;
String sendTo = ApplicationConfig.email_To;
String host = ApplicationConfig.email_Host;
String subject = ApplicationConfig.email_Subject;
String textToSend = ApplicationConfig.email_Text;
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.host", host);
Session session = Session.getDefaultInstance(properties);
try{
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.addRecipients(Message.RecipientType.TO, InternetAddress.parse(sendTo));
message.setSubject(subject);
message.setText(textToSend);
Transport.send(message);
}catch (MessagingException mex) {
mex.printStackTrace();
}
}
So far I couldn't find anything that fits my requirement, there are some plugins in grails, but I'm not using grails.
Just use an ExecutorService
ExecutorService pool = Executors.newFixedThreadPool(2)
def sender = { ->
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.host", ApplicationConfig.email_Host);
Session session = Session.getDefaultInstance(properties);
try{
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(ApplicationConfig.email_From));
message.addRecipients(Message.RecipientType.TO, InternetAddress.parse(ApplicationConfig.email_To));
message.setSubject(ApplicationConfig.email_Subject);
message.setText(ApplicationConfig.email_Text);
Transport.send(message);
}catch (MessagingException mex) {
mex.printStackTrace();
}
}
public void sendNotification() {
pool.submit(sender)
}
I am using Java Jetty client written [websocket-client 9.3.8.RC0]. Websocket server is little wierd in our case.
It accepting request in format.
wss://192.168.122.1:8443/status?-xsrf-=tokenValue
Token Value is received in first Login POST request in which i get Token Value & Cookie header. Cookie is added as a header whereas token is given as a param.
Now question is : -
When i run below code it just call awaitclose() function in starting. But there is not other function called i.e. Onconnected or even Onclose.
Any help would be appreciated to debug it further, to see any logs or environment issue to see why Socket is not connected.
Trying to figure out following points to debug.
1. To check if client certificates are causing issue.
Tried with my python code wspy.py it work seemlessly fine.
Code is
public final class websocketxxx {
WebSocketClient client=null;
public websocketxxx (){
}
public void run(String host,String cookieVal, String xsrfVal, String resource) throws IOException {
SslContextFactory sslContextFactory = new SslContextFactory();
sslContextFactory.setTrustAll(true);
WebSocketClient client = new WebSocketClient(sslContextFactory);
MyWebSocket socket = new MyWebSocket();
try {
client.start();
ClientUpgradeRequest request = new ClientUpgradeRequest();
// Add the authentication and protocol to the request header
// Crate wss URI from host and resource
resource = resource + xsrfVal;
URI destinationUri = new URI("wss://" + host + resource); // set URI
request.setHeader("cookie",cookieVal);
request.setHeader("Sec-WebSocket-Protocol", "ao-json");
//System.out.println("Request Headers print : " request.getHeaders())
System.out.println("Connecting to : " + destinationUri);
client.connect(socket, destinationUri, request);
socket.awaitClose(5000, TimeUnit.SECONDS);
} catch (Throwable t) {
t.printStackTrace();
} finally {
try {
client.stop();
} catch (Exception e) {
e.printStackTrace();
}
}
}
#WebSocket
public class MyWebSocket {
private final CountDownLatch closeLatch = new CountDownLatch(1);
#OnWebSocketConnect
public void onConnect(Session session) {
System.out.println("WebSocket Opened in client side");
try {
System.out.println("Sending message: Hi server");
session.getRemote().sendString("Hi Server");
} catch (IOException e) {
e.printStackTrace();
}
}
#OnWebSocketMessage
public void onMessage(String message) {
System.out.println("Message from Server: " + message);
}
#OnWebSocketClose
public void onClose(int statusCode, String reason) {
System.out.println("WebSocket Closed. Code:" + statusCode);
}
public boolean awaitClose(int duration, TimeUnit unit) throws InterruptedException {
return this.closeLatch.await(duration, unit);
}
}
public Client getBypassCertVerificationClient() {
Client client1 = null;
try {
// Create a HostnameVerifier that overrides the verify method to accept all hosts
HostnameVerifier hostnameVerifier = new HostnameVerifier() {
public boolean verify(String host, SSLSession sslSession) {
return true;
}
};
// Create a TrustManager
TrustManager[] trust_mgr = new TrustManager[]{
new X509TrustManager() {
public X509Certificate[] getAcceptedIssuers() {
return null;
}
public void checkClientTrusted(X509Certificate[] certs, String t) {
}
public void checkServerTrusted(X509Certificate[] certs, String t) {
}
}
};
// Create the SSL Context
SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, trust_mgr, new SecureRandom());
// Create the client with the new hostname verifier and SSL context
client1 = ClientBuilder.newBuilder()
.sslContext(sslContext)
.hostnameVerifier(hostnameVerifier)
.build();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (KeyManagementException e) {
e.printStackTrace();
}
return client1;
}
public String[] simple_Login_POST_request(String host, String user, String password, String resource, String data) {
String resp = null;
String[] headers = new String[2];
try {
// Create a Client instance that supports self-signed SSL certificates
Client client = getBypassCertVerificationClient();
// Create a WebTarget instance with host and resource
WebTarget target = client.target("https://" + host).path(resource);
// Build HTTP request invocation
Invocation.Builder invocationBuilder = target.request();
// Encode the user/password and add it to the request header
invocationBuilder.header(HttpHeaders.CONTENT_TYPE, "application/x-www-form-urlencoded");
Form form = new Form();
form.param("userid", user);
form.param("password", password);
// Invoke POST request and get response as String
//post(Entity.entity(form,MediaType.APPLICATION_FORM_URLENCODED_TYPE));
Response response = invocationBuilder.method("POST", Entity.entity(form,MediaType.APPLICATION_FORM_URLENCODED_TYPE));
resp = (String) response.readEntity(String.class);
// Print input URL, input data, response code and response
System.out.println("URL: [POST] " + target.getUri().toString());
System.out.println("HTTP Status: " + response.getStatus());
System.out.println("HTTP Status: " + response.getHeaders());
headers[0] = response.getHeaderString("Set-Cookie");
//response.getStringHeaders()
headers[1] = response.getHeaderString("X-XSRF-TOKEN");
System.out.println("Response: \n" + resp);
response.close();
} catch (Exception e) {
e.printStackTrace();
}
return headers;
}
public static void main(String[] args) throws IOException {
String host = "";
String user = "";
String password = "";
String resource = "";
host ="192.168.122.1:8443";
user = "ADMIN";
password ="ADMIN";
websocketXXX wsNotification = new websocketxxx();
/////////////////////////////////////////////////////////////////
// Simple POST LOGIN Request
resource = "/api/login";
String headers[]= wsNotification.simple_Login_POST_request(host, user, password, resource, null);
////////////////////////////////////////////////////////////////
headers[0] = headers[0].substring(headers[0].lastIndexOf(",") + 1);
System.out.println("headers[0]: " + headers[0] + "\n");
String cookie = headers[0];
String XSRFToken = headers[1];
resource = "/status?-xsrf-=";
//wsNotification.simple_websocket_example(host, cookie, XSRFToken, resource);
wsNotification.run(host, cookie, XSRFToken, resource);
}
}
The implementation is mostly correct.
Setting raw Cookie and Sec-WebSocket-* headers is forbidden, you have to use the API.
Cookie handling from:
ClientUpgradeRequest request = new ClientUpgradeRequest();
request.setHeader("cookie",cookieVal);
To ClientUpgradeRequest.setCookies() :
ClientUpgradeRequest request = new ClientUpgradeRequest();
List<HttpCookie> cookies = new ArrayList<>();
cookies.add(new HttpCookie(...));
request.setCookies(cookies);
Note: if you are using the java CookieStore, then you can pass the CookieStore instance to the client as well, using the setCookiesFrom(CookieStore) method.
Sub Protocol Selection from:
ClientUpgradeRequest request = new ClientUpgradeRequest();
request.setHeader("Sec-WebSocket-Protocol", "ao-json");
To ClientUpgradeRequest.setSubProtocols():
ClientUpgradeRequest request = new ClientUpgradeRequest();
request.setSubProtocols("ao-json");
I have created email template in sendgrid - with substitutable values;
I get the JSON payload (contains substitute values) for processing email from rabbitMQ queue. My question is how to call the sendgrid email template from Java?
I found the solution, the way to call sendgrid template and email through sendgrid as below:
SendGrid sendGrid = new SendGrid("username","password"));
SendGrid.Email email = new SendGrid.Email();
//Fill the required fields of email
email.setTo(new String[] { "xyz_to#gmail.com"});
email.setFrom("xyz_from#gmail.com");
email.setSubject(" ");
email.setText(" ");
email.setHtml(" ");
// Substitute template ID
email.addFilter(
"templates",
"template_id",
"1231_1212_2323_3232");
//place holders in template, dynamically fill values in template
email.addSubstitution(
":firstName",
new String[] { firstName });
email.addSubstitution(
":lastName",
new String[] { lastName });
// send your email
Response response = sendGrid.send(email);
This is my working soloution .
import com.fasterxml.jackson.annotation.JsonProperty;
import com.sendgrid.*;
import java.io.IOException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
public class MailUtil {
public static void main(String[] args) throws IOException {
Email from = new Email();
from.setEmail("fromEmail");
from.setName("Samay");
String subject = "Sending with SendGrid is Fun";
Email to = new Email();
to.setName("Sam");
to.setEmail("ToEmail");
DynamicTemplatePersonalization personalization = new DynamicTemplatePersonalization();
personalization.addTo(to);
Mail mail = new Mail();
mail.setFrom(from);
personalization.addDynamicTemplateData("name", "Sam");
mail.addPersonalization(personalization);
mail.setTemplateId("TEMPLATE-ID");
SendGrid sg = new SendGrid("API-KEY");
Request request = new Request();
try {
request.setMethod(Method.POST);
request.setEndpoint("mail/send");
request.setBody(mail.build());
Response response = sg.api(request);
System.out.println(response.getStatusCode());
System.out.println(response.getBody());
System.out.println(response.getHeaders());
} catch (IOException ex) {
throw ex;
}
}
private static class DynamicTemplatePersonalization extends Personalization {
#JsonProperty(value = "dynamic_template_data")
private Map<String, String> dynamic_template_data;
#JsonProperty("dynamic_template_data")
public Map<String, String> getDynamicTemplateData() {
if (dynamic_template_data == null) {
return Collections.<String, String>emptyMap();
}
return dynamic_template_data;
}
public void addDynamicTemplateData(String key, String value) {
if (dynamic_template_data == null) {
dynamic_template_data = new HashMap<String, String>();
dynamic_template_data.put(key, value);
} else {
dynamic_template_data.put(key, value);
}
}
}
}
Here is an example from last API spec:
import com.sendgrid.*;
import java.io.IOException;
public class Example {
public static void main(String[] args) throws IOException {
Email from = new Email("test#example.com");
String subject = "I'm replacing the subject tag";
Email to = new Email("test#example.com");
Content content = new Content("text/html", "I'm replacing the <strong>body tag</strong>");
Mail mail = new Mail(from, subject, to, content);
mail.personalization.get(0).addSubstitution("-name-", "Example User");
mail.personalization.get(0).addSubstitution("-city-", "Denver");
mail.setTemplateId("13b8f94f-bcae-4ec6-b752-70d6cb59f932");
SendGrid sg = new SendGrid(System.getenv("SENDGRID_API_KEY"));
Request request = new Request();
try {
request.setMethod(Method.POST);
request.setEndpoint("mail/send");
request.setBody(mail.build());
Response response = sg.api(request);
System.out.println(response.getStatusCode());
System.out.println(response.getBody());
System.out.println(response.getHeaders());
} catch (IOException ex) {
throw ex;
}
}
}
https://github.com/sendgrid/sendgrid-java/blob/master/USE_CASES.md
Recently Sendgrid upgraded the Maven version v4.3.0 so you don't have to create additional classes for dynamic data content. Read more from this link https://github.com/sendgrid/sendgrid-java/pull/449
If you're doing a spring-boot maven project, You'll need to add the sendgrid-java maven dependency in your pom.xml. Likewise, in your application.properties file under resource folder of the project, add SENDGRID API KEY AND TEMPLATE ID under attributes such as spring.sendgrid.api-key=SG.xyz and templateId=d-cabc respectively.
Having done the pre-setups. You can create a simple controller class as the one given below:
Happy Coding!
#RestController
#RequestMapping("/sendgrid")
public class MailResource {
private final SendGrid sendGrid;
#Value("${templateId}")
private String EMAIL_TEMPLATE_ID;
public MailResource(SendGrid sendGrid) {
this.sendGrid = sendGrid;
}
#GetMapping("/test")
public String sendEmailWithSendGrid(#RequestParam("msg") String message) {
Email from = new Email("bijay.shrestha#f1soft.com");
String subject = "Welcome Fonesal Unit to SendGrid";
Email to = new Email("birat.bohora#f1soft.com");
Content content = new Content("text/html", message);
Mail mail = new Mail(from, subject, to, content);
mail.setReplyTo(new Email("bijay.shrestha#f1soft.com"));
mail.setTemplateId(EMAIL_TEMPLATE_ID);
Request request = new Request();
Response response = null;
try {
request.setMethod(Method.POST);
request.setEndpoint("mail/send");
request.setBody(mail.build());
response = sendGrid.api(request);
System.out.println(response.getStatusCode());
System.out.println(response.getBody());
System.out.println(response.getHeaders());
} catch (IOException ex) {
System.out.println(ex.getMessage());
}
return "Email was successfully sent";
}
}
This is based on verision com.sendgrid:sendgrid-java:4.8.3
Email from = new Email(fromEmail);
Email to = new Email(toEmail);
String subject = "subject";
Content content = new Content(TEXT_HTML, "dummy value");
Mail mail = new Mail(from, subject, to, content);
// Using template to send Email, so subject and content will be ignored
mail.setTemplateId(request.getTemplateId());
SendGrid sendGrid = new SendGrid(SEND_GRID_API_KEY);
Request sendRequest = new Request();
sendRequest.setMethod(Method.POST);
sendRequest.setEndpoint("mail/send");
sendRequest.setBody(mail.build());
Response response = sendGrid.api(sendRequest);
You can also find fully example here:
Full Email object Java example