Spring Boot

In this tutorial, you will learn how to start your Spring Boot application on a random port number. This is very helpful when you need to start multiple instances of the same Spring Boot application and then balance HTTP requests between the running instances. If you are interested to learn how to balance HTTP requests…

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In this tutorial, you will learn how to start your Spring Boot Web application on a different port number. By default, if no port number is configured, our Spring Boot Web application will start on port number 8080. To configure a different port number, you will need to update an application.properties file with the following…

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By default, Spring Boot RESTful Web service endpoints consume and produce JSON representation. But we can easily make our RESTful Spring Boot Web service endpoints consume and produce an XML representation of a resource as well. Add XML Support to Spring Boot Project To make our Spring Boot project consume and produce an XML representation…

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In this Spring Security tutorial, you will learn how to use the @PreAuthorize annotation to secure method invocation. You can use the @PreAuthorize annotation to secure either method in a Controller class or a method in a service layer class. There are other useful method level security annotations like the ones below. It is useful…

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In this Spring Security tutorial, you will learn how to enable and use the Method Level Security with @Secured annotation. There are other useful method level security annotations like the ones below. It is useful to know how they work as well. @PostAuthorize Security Annotation Example, @PreAuthorize Security Annotation Example. If you are interested in video…

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In this Spring Boot tutorial, you will learn how to implement User Authentication(User Login) functionality for your RESTful Web Service built with Spring Boot, Spring MVC, Spring Security using JWT. There is also a step-by-step video demonstration on how to do User Authentication available here. The user authentication functionality we are going to implement in…

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In this short tutorial you will learn how to use SearchPaths to configure your Spring Cloud Config Server to discover properties files in a remote Git repository subdirectories. To learn how to configure Spring Cloud Config Server and also Spring Cloud Config Client please read this tutorial: Learn to use Spring Cloud Config Server and Spring…

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In this tutorial you will learn how to bind nested properties from application.properties file to a Java class. Once you finish this tutorial you might also want to check: How to bind simple(not nested) properties to a Java class, and How to use @ConfigurationProperties with Spring Boot @Profile. Example of Nested Properties in a Properties File…

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@ConfigurationProperties is used to bind all the properties in a properties file to a Java class annotated with @ConfigurationProperties. You can then use a Java object to access configuration properties defined in a properties file. Earlier I have shared with you a tutorial on how to read application properties in Spring Boot RESTful Web Service…

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In this tutorial you will learn how to use Spring Cloud Bus to notify running Microservices about the changes in Spring Cloud Config property file. Running Microservices will be updated with new properties stored in Spring Cloud Config file without the need for you to restart them. These way you can update values in a…

Read More Spring Cloud Bus – Refreshing Config Changes

In this short Spring Boot tutorial, you will learn how to pass command-line arguments to your Spring Boot application. Passing Command-Line Arguments To pass command line arguments to your Spring Boot app when running it with Maven use the -Dspring-boot.run.arguments. In the below code example, I will pass two command-line arguments: firstName and lastName. mvn spring-boot:run…

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In this Spring MVC tutorial, you will learn how to read HTTP Request Header in the Rest Controller class of your Application. To read HTTP Request Header in Spring MVC application we use @RequestHeader annotation. @RequestHeader(value=”Accept”) String acceptHeader Reading HTTP Request Header For example, let’s assume we need to create a method in our Rest…

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In this short Spring Boot tutorial, I am going to share with you how to make Spring Boot app show Hibernate SQL Queries. Enable Hibernate SQL Queries Logging To show hibernate SQL queries in Spring Boot log file you will need to update the application.properties file with the following details: logging.level.org.hibernate.SQL=debug Show SQL Values Additionally,…

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In this blog post, I am going to list commonly used POM.XML dependencies for building RESTful Web services with Spring Boot and Spring MVC. The list of below dependencies is not complete and will depend on the functionality you need your RESTful Web Services to support. But if you are building a simple REST API…

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