infervour.com
-
8 min readTo stop a Spring Boot application from the command line, you need to perform the following steps:Identify the process ID (PID) of the running Spring Boot application. You can do this by using the jps command. Open the command prompt and type jps -l. Look for the process with the name of your Spring Boot application, typically the JAR file name. Once you have identified the PID, use the kill command with the PID to stop the Spring Boot application.
-
10 min readTo send email in Spring Boot, you can follow these simple steps:Ensure that you have the necessary dependencies included in your project's pom.xml file. These dependencies usually include the 'spring-boot-starter-mail' and 'javax.activation' libraries. Configure the email settings in your application.properties or application.yml file. Include the SMTP server details such as host, port, username, and password. For example: spring.mail.host=smtp.example.com spring.mail.
-
10 min readIn Spring Boot, you can set a default value for a field in an entity class by using the @Column annotation with the columnDefinition attribute.Here's an example of how you can set a default value for a field: import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; @Entity public class MyEntity { @Id @GeneratedValue(strategy = GenerationType.
-
8 min readIn Spring Boot, you can execute SQL queries by leveraging the powerful Spring Data JPA framework. Here are the steps to execute SQL queries in Spring Boot:Define your database connection properties in the application.properties file, including the URL, username, and password. Create an entity class that represents your database table. Use annotations such as @Entity, @Table, and @Column to map the class attributes to the database table columns.
-
9 min readIn Spring Boot, you can write native queries to directly interact with the underlying database using SQL statements. Native queries allow you to have more control and flexibility over the query execution.To write a native query in Spring Boot, you need to follow these steps:Create a repository interface that extends the JpaRepository or CrudRepository interface.Declare a method in the repository interface, and annotate it with the @Query annotation.
-
9 min readIn Spring Boot, you can encrypt passwords using various encryption algorithms. Here is an overview of how to encrypt a password in Spring Boot:Use the BCryptPasswordEncoder class from the Spring Security library. This class provides the encode() method to encrypt a plain-text password. Start by adding the Spring Security dependency to your project's build configuration file, such as pom.xml for Maven or build.gradle for Gradle.
-
10 min readTo connect Spring Boot with PostgreSQL, you need to follow these steps:Add the PostgreSQL dependency to your Spring Boot project. In your pom.xml file, add the following dependency: <dependency> <groupId>org.postgresql</groupId> <artifactId>postgresql</artifactId> </dependency> Configure the database connection properties in the application.properties file. Open the src/main/resources/application.properties file and add the following lines: spring.
-
11 min readTo add a foreign key to a Spring Boot entity, you need to follow these steps:Define the parent entity: First, define the entity that will act as the parent entity. This entity will have the primary key that will be referenced by the foreign key in the child entity. Define the child entity: Next, define the child entity that will contain the foreign key. In this entity, you need to define a field that will store the foreign key value.
-
13 min readOAuth2 is a widely used authorization protocol that allows third-party applications to access user data from a service provider, such as Google or Facebook, without directly accessing the user's credentials. In Spring Boot, implementing OAuth2 can be achieved by following a few steps.Firstly, add the required dependencies to your Spring Boot project.
-
9 min readTo use Kafka in Spring Boot, you need to follow the following steps:Dependency Setup: Add the required dependencies for Kafka and Spring Boot in your project's build file. This can be done using Maven or Gradle. Configuration: Configure Kafka properties in the application.properties or application.yml file. Set the bootstrap servers' address, topics, and other necessary Kafka configurations. Producer Setup: Create a KafkaProducer bean that will send messages to Kafka topics.
-
10 min readTo enable HTTPS in a Spring Boot application, you need to perform the following steps:Generate or obtain an SSL certificate: You can either generate a self-signed certificate or obtain one from a trusted certificate authority (CA). Include the certificate in the application's keystore: Spring Boot uses a keystore file to store certificates. You need to include the SSL certificate in this keystore. Configure the application.properties file: Add the following properties to the application.