spring – Page 9 – Tarik Billa

What is the right way to send a client certificate with every request made by the resttemplate in spring?

January 6, 2024 by Tarik

Here is example how to do this using RestTemplate and Apache HttpClient You should define your own RestTemplate with configured SSL context: @Bean public RestTemplate restTemplate(RestTemplateBuilder builder) throws Exception { char[] password = “password”.toCharArray(); SSLContext sslContext = SSLContextBuilder.create() .loadKeyMaterial(keyStore(“classpath:cert.jks”, password), password) .loadTrustMaterial(null, new TrustSelfSignedStrategy()).build(); HttpClient client = HttpClients.custom().setSSLContext(sslContext).build(); return builder .requestFactory(new HttpComponentsClientHttpRequestFactory(client)) .build(); } private … Read more

Where do I put my XML beans in a Spring Boot application?

January 5, 2024 by Tarik

As long as you’re starting with a base @Configuration class to begin with, which it maybe sounds like you are with @SpringBootApplication, you can use the @ImportResource annotation to include an XML configuration file as well. @SpringBootApplication @ImportResource(“classpath:spring-sftp-config.xml”) public class SpringConfiguration { // }

Jackson’s @JsonView, @JsonFilter and Spring

January 5, 2024 by Tarik

This issue is solved! Follow this Add support for Jackson serialization views Spring MVC now supports Jackon’s serialization views for rendering different subsets of the same POJO from different controller methods (e.g. detailed page vs summary view). Issue: SPR-7156 This is the SPR-7156. Status: Resolved Description Jackson’s JSONView annotation allows the developer to control which … Read more

Spring Request scope vs java thread-local

January 5, 2024 by Tarik

If we consider the traditional Java approach the answer can be deducted from the quote bellow as being much slower: Because reflection involves types that are dynamically resolved, certain Java virtual machine optimizations can not be performed. Consequently, reflective operations have slower performance than their non-reflective counterparts, and should be avoided in sections of code … Read more

Spring Data Join with Specifications

January 5, 2024 by Tarik

EDIT: Ok, I did quite a mess here, but I hope this time I’m closer to the right answer. Consider (id’s are auto-generated like 1 for John etc.): INSERT INTO some_user (name) VALUES (‘John’); INSERT INTO some_user (name) VALUES (‘Ariel’); INSERT INTO some_user (name) VALUES (‘Brian’); INSERT INTO some_user (name) VALUES (‘Kelly’); INSERT INTO some_user … Read more

Spring syntax for setting a Class object?

January 5, 2024 by Tarik

<bean> <property name=”x”> <value type=”java.lang.Class”>a.b.c.Foo</value> </property> </bean> That should work.

Spring JPA Query returns Null instead of List

January 5, 2024 by Tarik

The normal behavior is indeed returning an empty list if no results are found. If a List<Object> is the return value of the method in the defined interface, the method should never return Null. The problem is that a parameter is given to the method and is not used anywhere in the Query. For some … Read more

Spring webflux and reading from database

January 5, 2024 by Tarik

One option would be to use alternative SQL clients that are fully non-blocking. Some examples include: https://github.com/mauricio/postgresql-async or https://github.com/finagle/roc. Of course, none of these drivers is officially supported by database vendors yet. Also, functionality is way much less attractive comparing to mature JDBC-based abstractions such as Hibernate or jOOQ. The alternative idea came to me … Read more

How to have multiple cache manager configuration in spring cache java

January 5, 2024 by Tarik

There are several ways you can do this and the right answer depends on your usage of the cache. You have a “main” cache manager If you use CacheManager A for 90% of your use case and B for 10% I’d advise to create a default CacheManager for A (you’ll need to specify it via … Read more

Why is my Spring 3 Validator Validating Everything on the Model?

January 4, 2024 by Tarik

I guess this behaviour is not covered in the documentation well. The problem is caused by the following: By default, @InitBinder-annotated method is called for each non-primitive model attribute, both incoming and outcoming (the purpose of calling it for outcoming attibutes is to allow you to register custom PropertyEditors, which are used by form tags … Read more