Your understanding is correct. However I would like to add something Whereas if the scope is defined as session for the bean, if a user makes a request for a web page more than once, then on every request same bean would be returned. I would change it as “Whereas if the scope is defined … Read more
Steps to use ‘Multipart/form-data ‘ in Postman Create a new tab Insert controller Url Set method type as POST Under Body tab, select form-data For each key that is a file, set Value type as File
The answer will really depend on which specific libraries you’re using and how they interact with each other, but generally speaking trying to mix Java EE and Jakarta EE them would be a bad idea. As an example, if you’re writing a Spring MVC application then you’ll be using the DispatcherServlet. In Spring Framework 6 … Read more
app.jar is the archive produced by the bootJar task. This is a Spring Boot fat jar that contains all of the module’s dependencies as well as its classes and resources. It can be run using java -jar. app-plain.jar is the archive produced by the jar task. This is a plain or standard jar file that … Read more
I resolved the error by doing mvn clean install Also add this to your pom <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.7.0</version> <configuration> <source>1.8</source> <target>1.8</target> <annotationProcessorPaths> <path> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>${lombok.version}</version> </path> <path> <groupId>org.mapstruct</groupId> <artifactId>mapstruct-processor</artifactId> <version>${org.mapstruct.version}</version> </path> </annotationProcessorPaths> <compilerArgs> <compilerArg> -Amapstruct.defaultComponentModel=spring </compilerArg> </compilerArgs> </configuration> </plugin>
You should use TaskScheduler for your purpose @Bean public ThreadPoolTaskScheduler threadPoolTaskScheduler() { ThreadPoolTaskScheduler threadPoolTaskScheduler = new ThreadPoolTaskScheduler(); threadPoolTaskScheduler.setPoolSize(THREADS_COUNT); return threadPoolTaskScheduler; } Where THREADS_COUNT – total count of tasks which should be executed in parallel. If I understand you correctly, you have only 2 jobs, so you need 2 threads
In short Spring Boot reduces the need to write a lot of configuration and boilerplate code. It has an opinionated view on Spring Platform and third-party libraries so you can get started with minimum effort. Easy to create standalone applications with embedded Tomcat/Jetty/Undertow. Provides metrics, health checks, and externalized configuration. You can read more here … Read more
This is defined behaviour. From the docs: Any RuntimeException triggers rollback, and any checked Exception does not. This is common behaviour across all Spring transaction APIs. By default, if a RuntimeException is thrown from within the transactional code, the transaction will be rolled back. If a checked exception (i.e. not a RuntimeException) is thrown, then … Read more
Spring Boot docs on error handling: http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-error-handling. One way you can control the JSON is by adding a @Bean of type ErrorAttributes. @Bean ErrorAttributes errorAttributes() { return new MyErrorAttributes(); }
Yes, it’s possible in Spring if you use NamedParameterJdbcTemplate or SimpleJdbcTemplate with named parameters. List parameter can be set as a java.util.List: List<String> list = new ArrayList<String>(); list.add(“A”); list.add(“B”); list.add(“C”); List<SomeObject> result = simpleJdbcTemplate.query(“SELECT * FROM t WHERE c in (:list)”, new RowMapper<SomeObject>() { … }, Collections.singletonMap(“list”, list)); In this case Spring internally creates the … Read more