MD Towhidul Islam tuhin47

MySQL

Run MySQL docker Command:

docker run --name mysql47 -e MYSQL_ROOT_PASSWORD=root -p 3333:3306 -d mysql

Connect from terminal:

mysql -h 127.0.0.1 -P 3333 -u root -p

Java Code

public class InstantTimeDeserializer extends JsonDeserializer<Instant> {
    @Override
    public Instant deserialize(JsonParser arg0, DeserializationContext arg1) throws IOException {
        return Instant.parse(arg0.getText());
    }
}

Spring Date And User Audit

DateAudit.java

@MappedSuperclass
@Data
@EntityListeners(AuditingEntityListener.class)
@JsonIgnoreProperties(
		value = { "createdAt", "updatedAt" },

CurrentUser.java

@Target({ElementType.PARAMETER, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@AuthenticationPrincipal
public @interface CurrentUser {
}

GenericSpecification.java

public class GenericSpecification<T> implements Specification<T> {
    private static final long serialVersionUID = 1900581010229669687L;

    private List<SearchCriteria> list;

    public GenericSpecification() {

Find String inside file

grep -rl 'string' **/** | xargs sed -i 's/srtring/replace/g'

Serialize

@JsonSerialize

@JsonSerialize(converter = DoubleAmountConverter.class)
private Double grandTotal;

DoubleAmountConverter.java

Error thrown as :

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory

Solution

<!-- https://mvnrepository.com/artifact/javax.xml.bind/jaxb-api -->

	<NotepadPlus>
	<UserLang name="Log4J" ext="log" udlVersion="2.1">
	<Settings>
	<Global caseIgnored="no" allowFoldOfComments="no" foldCompact="no" forcePureLC="0" decimalSeparator="2" />
	<Prefix Keywords1="no" Keywords2="no" Keywords3="no" Keywords4="no" Keywords5="no" Keywords6="no" Keywords7="no" Keywords8="no" />
	</Settings>
	<KeywordLists>
	<Keywords name="Comments">00 01 02 03 04</Keywords>
	<Keywords name="Numbers, prefix1"></Keywords>
	<Keywords name="Numbers, prefix2"></Keywords>

	FROM adoptopenjdk/openjdk11:alpine-jre

	# Refer to Maven build -> finalName
	ARG JAR_FILE=target/HibernateSpringBootCalculatePropertyPostLoad-1.0.jar

	# cd /opt/app
	WORKDIR /opt/app

	# cp target/spring-boot-web.jar /opt/app/app.jar
	COPY ${JAR_FILE} app.jar