ProxiedThreadLocalTargetSource Issue After Spring Boot 3.4.5 Update

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Introduction

In this article, we will discuss the issue of proxiedThreadLocalTargetSource after updating to Spring Boot 3.4.5. We will explore the root cause of the problem and provide a solution to resolve the issue.

Background

The proxiedThreadLocalTargetSource is a bean that is used to create a proxy for a ThreadLocalTargetSource. The ThreadLocalTargetSource is a bean that is used to store data in a thread-local variable. The proxiedThreadLocalTargetSource is used to create a proxy for the ThreadLocalTargetSource so that it can be used in a multi-threaded environment.

Configuration Class

The following is an example of a configuration class that uses the proxiedThreadLocalTargetSource:

@Configuration
public class FilterConfig {

    @Bean
    public Filter userFilter() {
        return new UserFilter();
    }

    @Bean
    public FilterRegistrationBean tenantFilterRegistration() {
        FilterRegistrationBean result = new FilterRegistrationBean();
        result.setFilter(this.userFilter());
        result.addUrlPatterns("/*");
        result.setName("User Store Filter");
        result.setOrder(1);
        return result;
    }

    @Bean(destroyMethod = "destroy")
    public ThreadLocalTargetSource threadLocalUserStore() {
        ThreadLocalTargetSource result = new ThreadLocalTargetSource();
        result.setTargetBeanName("userStore");
        return result;
    }

    @Primary
    @Bean(name = "proxiedThreadLocalTargetSource")
    public ProxyFactoryBean proxiedThreadLocalTargetSource(ThreadLocalTargetSource threadLocalTargetSource) {
        ProxyFactoryBean result = new ProxyFactoryBean();
        result.setTargetSource(threadLocalTargetSource);
        return result;
    }

    @Bean(name = "userStore")
    @Scope(scopeName = "prototype")
    public UserStore userStore() {
        return new UserStore();
    }

}

Bug Report

After updating to Spring Boot 3.4.5, we encountered the following error:

Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanCreationException. Message: Error creating bean with name 'tenantFilterRegistration' defined in class path resource [com/acme/config/FilterConfig.class]: Failed to instantiate [org.springframework.boot.web.servlet.FilterRegistrationBean]: Factory method 'tenantFilterRegistration' threw exception with message: Error creating bean with name 'userFilter': Unsatisfied dependency expressed through field 'userStore': Error creating bean with name 'proxiedThreadLocalTargetSource': FactoryBean threw exception on object creation

Root Cause

The root cause of the problem is that the proxiedThreadLocalTargetSource bean is not being created correctly. The ProxyFactoryBean is not being used correctly to create a proxy for the ThreadLocalTargetSource bean.

Solution

To resolve the issue, we need to modify the proxiedThreadLocalTargetSource bean to use the ProxyFactoryBean correctly. We can do this by changing the proxiedThreadLocalTargetSource bean to use the `@Scope annotation to specify the scope of the bean.

Here is the modified proxiedThreadLocalTargetSource bean:

@Primary
@Bean(name = "proxiedThreadLocalTargetSource")
@Scope(scopeName = "prototype")
public ProxyFactoryBean proxiedThreadLocalTargetSource(ThreadLocalTargetSource threadLocalTargetSource) {
    ProxyFactoryBean result = new ProxyFactoryBean();
    result.setTargetSource(threadLocalTargetSource);
    return result;
}

By using the @Scope annotation to specify the scope of the bean, we can ensure that the proxiedThreadLocalTargetSource bean is created correctly and the issue is resolved.

Conclusion

In this article, we discussed the issue of proxiedThreadLocalTargetSource after updating to Spring Boot 3.4.5. We explored the root cause of the problem and provided a solution to resolve the issue. By modifying the proxiedThreadLocalTargetSource bean to use the ProxyFactoryBean correctly and specifying the scope of the bean using the @Scope annotation, we can ensure that the issue is resolved and the application can run correctly.

Additional Information

  • The proxiedThreadLocalTargetSource bean is used to create a proxy for the ThreadLocalTargetSource bean.
  • The ThreadLocalTargetSource bean is used to store data in a thread-local variable.
  • The ProxyFactoryBean is used to create a proxy for the ThreadLocalTargetSource bean.
  • The @Scope annotation is used to specify the scope of the bean.

Related Articles

Q: What is the proxiedThreadLocalTargetSource bean?

A: The proxiedThreadLocalTargetSource bean is a bean that is used to create a proxy for a ThreadLocalTargetSource. The ThreadLocalTargetSource is a bean that is used to store data in a thread-local variable.

Q: What is the purpose of the proxiedThreadLocalTargetSource bean?

A: The purpose of the proxiedThreadLocalTargetSource bean is to create a proxy for the ThreadLocalTargetSource bean so that it can be used in a multi-threaded environment.

Q: What is the root cause of the proxiedThreadLocalTargetSource issue after Spring Boot 3.4.5 update?

A: The root cause of the proxiedThreadLocalTargetSource issue after Spring Boot 3.4.5 update is that the ProxyFactoryBean is not being used correctly to create a proxy for the ThreadLocalTargetSource bean.

Q: How can I resolve the proxiedThreadLocalTargetSource issue after Spring Boot 3.4.5 update?

A: To resolve the proxiedThreadLocalTargetSource issue after Spring Boot 3.4.5 update, you need to modify the proxiedThreadLocalTargetSource bean to use the ProxyFactoryBean correctly. You can do this by changing the proxiedThreadLocalTargetSource bean to use the @Scope annotation to specify the scope of the bean.

Q: What is the @Scope annotation used for in the proxiedThreadLocalTargetSource bean?

A: The @Scope annotation is used to specify the scope of the proxiedThreadLocalTargetSource bean. By using the @Scope annotation, you can ensure that the proxiedThreadLocalTargetSource bean is created correctly and the issue is resolved.

Q: What are the benefits of using the @Scope annotation in the proxiedThreadLocalTargetSource bean?

A: The benefits of using the @Scope annotation in the proxiedThreadLocalTargetSource bean are:

  • Ensures that the proxiedThreadLocalTargetSource bean is created correctly
  • Resolves the proxiedThreadLocalTargetSource issue after Spring Boot 3.4.5 update
  • Allows for the use of the proxiedThreadLocalTargetSource bean in a multi-threaded environment

Q: What are some common mistakes to avoid when using the proxiedThreadLocalTargetSource bean?

A: Some common mistakes to avoid when using the proxiedThreadLocalTargetSource bean are:

  • Not using the ProxyFactoryBean correctly to create a proxy for the ThreadLocalTargetSource bean
  • Not specifying the scope of the proxiedThreadLocalTargetSource bean using the @Scope annotation
  • Not using the @Scope annotation to specify the scope of the proxiedThreadLocalTargetSource bean

Q: How can I troubleshoot theiedThreadLocalTargetSource issue after Spring Boot 3.4.5 update?

A: To troubleshoot the proxiedThreadLocalTargetSource issue after Spring Boot 3.4.5 update, you can:

  • Check the Spring Boot documentation for the latest information on the proxiedThreadLocalTargetSource bean
  • Check the Spring Boot community forums for any known issues or solutions related to the proxiedThreadLocalTargetSource bean
  • Use a debugger to step through the code and identify the root cause of the issue

Q: What are some best practices for using the proxiedThreadLocalTargetSource bean?

A: Some best practices for using the proxiedThreadLocalTargetSource bean are:

  • Use the ProxyFactoryBean correctly to create a proxy for the ThreadLocalTargetSource bean
  • Specify the scope of the proxiedThreadLocalTargetSource bean using the @Scope annotation
  • Use the @Scope annotation to specify the scope of the proxiedThreadLocalTargetSource bean
  • Avoid common mistakes such as not using the ProxyFactoryBean correctly or not specifying the scope of the proxiedThreadLocalTargetSource bean.