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Questions tagged [spring-bean]

A simple JavaBean managed by the Spring IoC container.

A simple JavaBean managed by the Spring IoC container. These beans are created with the configuration metadata that is supplied to the container, for example, in the form of XML <bean/> definitions or @Bean annotation. Actually, the BeanFactory is the main IoC container which instantiates, configures, and manages these beans. These beans typically have associations with each other, and therefore have dependencies between themselves. These dependencies are configured in the configuration files used by the BeanFactory. Other dependencies that are invisible from the configuration file could be a function of programmatic interactions between beans at run-time.

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What is Spring beans what is the usage of beans

I am beginner in Spring MVC and a question that I have is why the beans are used. As I got to know beans only have private variables with getters and setters. I have few questions, is that the same beans appear in Spring MVC, why beans are used in…
bula
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Why does Spring continue to initialize the context even if a bean fails to instantiate?

I found a strange spring behavior in instantiating the beans during initial context Loading. I had a bean that loads large ML models. Due to insufficient memory the bean failed to instantiate throwing Out java OutOfMemoryError java heap space…
vivek_jonam
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Bean is no longer being autowired after Spring 5.3 Upgrade

I upgraded my package from Spring 4.3 to Spring 5.3 which has caused a issue I am completely to solve, for some reason a Bean that is created and works under 4.3 is being created, but not wired in. The bean is being created, and the configuration…
Mylies
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Accessing spring cloud function rabbit binding details

I'm attempting to update the "Springwolf" library (used to document async API definitions) to support rabbit consumer listeners using spring cloud functions for spring cloud stream. In order to accomplish this I need to find from application…
jrlambs
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Binding two Property classes and I need to merge them to one and Bind that too

I am working in a library which configures Property classes through Spring properties in an application.yml file. I am moving from a deprecated prefix(com.myapp.deprecated) to a new prefix(com.myapp.newprefix). I want to maintain old applications…
swhite
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Bean annotated abstract method - Factory method implementation with spring

Let's get quickly to the real thing. We have 6 classes as described below. Classes A,B,C implement the Factory Method design pattern while the caller and consumer is expected to be the spring (instantiating the E,F instances with the factory methods…
Ami
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Spring @Bean Name, is not working with @Qualifier

I have a spring boot application. It creates LocalSessionFactoryBean Object and inject into session factory variable. It works fine as follow: @Autowired @Qualifier(value="sessionFactory") private SessionFactory sessionFactory; @Primary …
user124
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Setters for session scoped bean not working in RestController

I'm trying to get the username from the session scoped bean once the user has logged in using /users/login I've Autowired a session scoped bean into a RestController and in one of the endpoints in the rest controller, I'm invoking a setter on the…
Lavish Kothari
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How to Reload/Re-init Bean in Spring boot?

I have email config class like this. @Configuration public class EmailConfiguration { @Autowired private ConfigService configService; @Bean public JavaMailSender JavaMailSender() { JavaMailSenderImpl mailSender = new…
kams
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SEVERE: Allocate exception for servlet [dispatcher] org.springframework.beans.factory.NoSuchBeanDefinitionException:

I have expanda.js. I am calling this dao in my formcontroller.java file but I get the following error. I guess I need to define DAO as a bean. How can I do this in the SpringWebConfig.java file? I do not have much control over spring, sorry Console…
Esma Haber
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Is there a way to use binary search to get a specific outcome

My code works, but it only works for the initial cut values. I am supposed to use binary search algorithm in the getLetterGrade method to get the desired outcome but every time I do I only get the one outcome. Spring bean class public class Grade…
newtoMobileDev
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Deadlock while creating bean in DefaultSingletonBeanRegistry and CachingConnectionFactory

My application finds deadlock while bean initialization. Two beans are waiting and holding resources required by one another in different threads. During the bean initialization "BeanA" class has taken lock of "connectionMonitor" object by calling…
Syed Taruf Naqvi
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Inject bean from a different folder

I have a project structure that looks like this: In My Groovy folder contains a class marked with @Component that I Want to inject in another class inside the java folder. However spring can't find the bean to inject, when I move the class marked…
Abbas.M
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What is given priority in below scenario @Bean or @Component?

I am learning concepts of Spring & I came across @Bean & @Component annotations. I want to know what will happen in below scenario: @Configuration class ConfigClass { @Bean public ComponentClass ComponentClass() { return new…
rsp
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Spring-like PostProcessor Hook on Dynamically Registered Third-Party Bean

What Spring Framework hook do I use on dynamically registered third-party beans? I have a BeanDefinitionRegistryPostProcessor that I am using to dynamically classpath-scan and instantiate multiple third-party beans (gRPC AbstractStub instances). I…
JJ Zabkar
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