Fail to run Spring

[Fraccaman]

After configuring "spring-boot-mustache-email" as per docs, spring boot fail to start crashing with this error:

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'priorityQueueSchedulerService' defined in URL [jar:file:/Users/Fraccaman/.m2/repository/it/ozimov/spring-boot-email-core/0.4.0/spring-boot-email-core-0.4.0.jar!/it/ozimov/springboot/templating/mail/service/defaultimpl/PriorityQueueSchedulerService.class]: Unsatisfied dependency expressed through constructor parameter 1; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'schedulerProperties': Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkState(ZLjava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)V

Spring boot version: 1.5.1 RELEASE

[robertotru]

@Fraccaman can you please provide more context?

[Fraccaman]

@robertotru yes, I'm sorry I have accidentally sent the issue empty.If you need anything more, tell me. Thank!

[robertotru]

Yeah, if you need the scheduler add the following properties

spring.mail.scheduler.enabled=true
spring.mail.scheduler.priorityLevels=5

(5 is just an example).

If you do not, just add

spring.mail.scheduler.enabled=false
spring.mail.scheduler.priorityLevels=1

In the following days I'm gonna release a minor fix version that defaults to false.

[Fraccaman]

spring.mail.host=smtp.gmail.com
spring.mail.port=587
spring.mail.username=MAIL
spring.mail.password=PASSWORD
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

spring.mail.scheduler.persistence.enabled=false
spring.mail.scheduler.persistence.redis.embedded=false
spring.mail.scheduler.persistence.redis.enabled=false
spring.mail.scheduler.enabled=false
spring.mail.scheduler.priorityLevels=1

with this configuration I'm still getting the same error. Do you have any other idea?

[robertotru]

No, without having more info on the project structure, pom, etc. I cannot. Everything looks fine!

Actually in pull request #26 I added an example project in which I send an email with attachment, and inline pictures using Mustache. Just have a look at the PR or clone from that branch.

[Fraccaman]

I watched your pull request but I still can't find what I'm doing wrong.

These are my pom dependecies:

<dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

        <dependency>
            <groupId>com.auth0</groupId>
            <artifactId>auth0-spring-security-api</artifactId>
            <version>0.3.3</version>
        </dependency>

        <dependency>
            <groupId>com.auth0</groupId>
            <artifactId>auth0</artifactId>
            <version>0.3.0</version>
        </dependency>

        <dependency>
            <groupId>org.apache.tika</groupId>
            <artifactId>tika-core</artifactId>
            <version>1.14</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.5.0</version>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.5.0</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.12</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.8.6</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <version>4.1.3.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-cache</artifactId>
        </dependency>

        <dependency>
                <groupId>net.sf.ehcache</groupId>
             <artifactId>ehcache</artifactId>
             <version>2.10.3</version>
        </dependency>

        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <version>1.4.193</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-test</artifactId>
            <version>1.4.3.RELEASE</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>it.ozimov</groupId>
            <artifactId>spring-boot-mustache-email</artifactId>
            <version>0.4.0</version>
        </dependency>

    </dependencies>

and here is my implementation:

@Service
@Async
public class EmailSenderService {

    public final EmailService emailService;

    @Autowired
    public EmailSenderService(EmailService emailService) {
        this.emailService = emailService;
    }

    public void sendEmailWithTemplating(){
        Stream.of(new Cospirator("fraccg@usi.ch", "Gaius Cassius Longinus")).forEach(tyrannicida -> {
            Email email = null;
            try {
                email = DefaultEmail.builder()
                        .from(new InternetAddress("divus.iulius@mala-tempora.currunt", "Gaius Iulius Caesar"))
                        .to(Lists.newArrayList(new InternetAddress(tyrannicida.email, tyrannicida.name)))
                        .subject("Idus Martii")
                        .body("")//Empty body
                        .encoding(String.valueOf(Charset.forName("UTF-8"))).build();
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            //Defining the model object for the given Freemarker template
            final Map<String, Object> modelObject = new HashMap<>();
            modelObject.put("tyrannicida", tyrannicida.name);

            try {
                emailService.send(email, "email.mustache", modelObject);
            } catch (CannotSendEmailException e) {
                e.printStackTrace();
            }
        });
    }

    private static class Cospirator {
        private String email;
        private String name;
        public Cospirator(final String email, final String name){
            this.email = email;
            this.name = name;
        }
    }
}

And the main is:

@SpringBootApplication
@EnableCaching
@EnableScheduling
@ComponentScan(basePackages = {"com.dubi", "it.ozimov.springboot.templating.mail"})
public class DubiApplication {

    public static void main(String[] args) {
        SpringApplication.run(DubiApplication.class, args);
    }
}

the file 'email.mustache' is inside the folder templates in resources. Do you see anything wrong here? Thank again for your time.

[robertotru]

I see... The problem is just in some application.properties, as reported in the exception.

Just try to replace:

spring.mail.scheduler.persistence.enabled=false
spring.mail.scheduler.persistence.redis.embedded=false
spring.mail.scheduler.persistence.redis.enabled=false
spring.mail.scheduler.enabled=false
spring.mail.scheduler.priorityLevels=1

with

spring.mail.scheduler.priorityLevels: 10
spring.mail.persistence.enabled: false
spring.mail.persistence.redis.embedded: false
spring.mail.persistence.redis.enabled: false
spring.mail.scheduler.persistenceLayer.desiredBatchSize: 200
spring.mail.scheduler.persistenceLayer.minKeptInMemory: 100
spring.mail.scheduler.persistenceLayer.maxKeptInMemory: 1000

The problem with this version is that the email scheduler creates a thread periodically waiting for something to be sent. In version 0.4.1 the scheduler becomes disabled by default and some properties will be refactored. I was supposed to create the release today, but I have an issue with the Pebble template engine. I hope that config solves.

[Fraccaman]

Thank for you time, but that config unfortunately is not solving the problem. If you say that within the next days you will release the fixed version I can wait.

Thank again!

[robertotru]

I'm creating a minor release, it will be available in a few hours (it really depends on the Maven Staging Environment). Use the properties you find in the README to get it work.

[robertotru]

@Fraccaman did release 0.4.1 fixed your issue?

[robertotru]

Closing due to inactivity.

[Fraccaman]

I'm sorry but I couldn't answer during the past few days. Tomorrow I'm gonna test the new version and I'll give you a feedback. Thanks.

[Fraccaman]

The new version is working perfectly. Thank you again for your support! 👍

[robertotru]

Super!