How can I solve whitespace error when sending mail in springboot? - spring-boot

Question

I am trying to send an email from spring boot, but I am getting the following error.
org.springframework.mail.MailSendException: Failed messages: jakarta.mail.internet.AddressException: Local address contains control or whitespace in string ``; message exception details (1) are:
Failed message 1:
jakarta.mail.internet.AddressException: Local address contains control or whitespace in string ``
at jakarta.mail.internet.InternetAddress.checkAddress(InternetAddress.java:1345)
at jakarta.mail.internet.InternetAddress.parse(InternetAddress.java:1193)
at jakarta.mail.internet.InternetAddress.parseHeader(InternetAddress.java:755)
at jakarta.mail.internet.MimeMessage.getAddressHeader(MimeMessage.java:746)
at jakarta.mail.internet.MimeMessage.getFrom(MimeMessage.java:374)
at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1773)
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1317)
at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:465)
at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:361)
at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:356)
at email.exist.EmailServiceImpl.sendSimpleMessage(EmailServiceImpl.java:77)
at email.exist.EmailController.emailConfirm(EmailController.java:29)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:207)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:152)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:884)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1080)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:973)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1010)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:913)
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:884)
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:814)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:223)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:177)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:119)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:400)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:859)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1734)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:833)
I checked both the recipient's email address and the sender's email address, but there was no whitespace.
Currently, the files for my email transmission are as follows
properties - I have the following settings in the properties
mail.smtp.auth=true
mail.smtp.starttls.required=true
mail.smtp.starttls.enable=true
mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
mail.smtp.socketFactory.fallback=false
mail.smtp.port=465
mail.smtp.socketFactory.port=465
# admin google account
AdminMail.id = 'account#gmail.com'
AdminMail.password = 'use AppPassword'
EmailConfig - A file that sets the sender email address, this part works fine
EmailController - This part also works fine
EmailService - Interface for EmailServiceImpl
EmailServiceImpl - I'm getting an error at this part
import java.util.Random;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.MailException;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.stereotype.Service;
import jakarta.mail.internet.InternetAddress;
import jakarta.mail.internet.MimeMessage;
import jakarta.mail.internet.MimeMessage.RecipientType;
#Service
public class EmailServiceImpl implements EmailService{
#Autowired
JavaMailSender emailSender;
public static final String ePw = createKey();
private MimeMessage createMessage(String to)throws Exception{
System.out.println(to);
System.out.println(ePw);
MimeMessage message = emailSender.createMimeMessage();
message.addRecipients(RecipientType.TO, to);
message.setSubject("Email send test");
String msgg="";
msgg+= "<div style='margin:20px;'>";
msgg+= "<h1>Hello1</h1>";
msgg+= "<br>";
msgg+= "<p>please paste this code<p>";
msgg+= "<br>";
msgg+= "<p>thank you<p>";
msgg+= "<br>";
msgg+= "<div align='center' style='border:1px solid black; font-family:verdana';>";
msgg+= "<h3 style='color:blue;'>Sign Up code</h3>";
msgg+= "<div style='font-size:130%'>";
msgg+= "CODE : <strong>";
msgg+= ePw+"</strong><div><br/> ";
msgg+= "</div>";
return message;
}
public static String createKey() {
StringBuffer key = new StringBuffer();
Random rnd = new Random();
for (int i = 0; i < 8; i++) {
int index = rnd.nextInt(3);
switch (index) {
case 0:
key.append((char) ((int) (rnd.nextInt(26)) + 97));
// a~z (ex. 1+97=98 => (char)98 = 'b')
break;
case 1:
key.append((char) ((int) (rnd.nextInt(26)) + 65));
// A~Z
break;
case 2:
key.append((rnd.nextInt(10)));
// 0~9
break;
}
}
return key.toString();
}
#Override
public String sendSimpleMessage(String to)throws Exception {
// TODO Auto-generated method stub
MimeMessage message = createMessage(to);
try{
emailSender.send(message);
}catch(MailException es){
es.printStackTrace();
throw new IllegalArgumentException();
}
return ePw;
}
I confirmed that an error occurs when calling emailSender.send(message) in the sendSimpleMessage method.
Both the recipient's and sender's e-mail addresses were checked, and the smtp settings of the e-mail were also checked. App password for gmail was also applied.

Answer 1

Update
I solved it by adding the code below to the createMessage method.
message.setText(msgg, "utf-8", "html");
message.setFrom(new InternetAddress("sender email in properties","
sender's name"));