Spring SimpleThreadScope Example
October 26, 2021
SimpleThreadScope is the implementation of Spring Scope interface. The SimpleThreadScope thread scope does not register by default in common contexts. We need explicitly register this scope.
1. Using
CustomScopeConfigurer
2. Using
ConfigurableBeanFactory.registerScope
Using CustomScopeConfigurer
spring-app.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util.xsd">
<bean
class="org.springframework.beans.factory.config.CustomScopeConfigurer">
<property name="scopes">
<map>
<entry key="thread">
<bean class="org.springframework.context.support.SimpleThreadScope" />
</entry>
</map>
</property>
</bean>
<bean id="city" class="com.concretepage.City" scope="thread" />
</beans>
package com.concretepage;
public class City {
public City() {
System.out.println("City class Initialized...");
}
public String getCityName() {
return "Varanasi";
}
}
package com.concretepage;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SpringDemo {
public static void main(String... args) {
AbstractApplicationContext context = new ClassPathXmlApplicationContext("spring-app.xml");
City book = (City) context.getBean("city");
}
}
City class Initialized...
Using ConfigurableBeanFactory.registerScope
ConfigurableBeanFactory beanFactory= new DefaultListableBeanFactory();
Scope threadScope= new SimpleThreadScope();
beanFactory.registerScope("thread", threadScope);
