Learn to document form parameters with Spring REST Docs and include their validation constraints in the documentation, too.
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Baeldung Author
Ulisses Lima
By day, I write new code, I improve bad code, and I try to enforce performance standards. Mostly in Java. I also love automating stuff. Mostly in bash. By night, I write technical articles and write tools for personal management. For fun: I'm a Street Fighter player (3rd Strike and V), trying to learn Japanese.
Here's what I've written (so far):
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Waiting for Complex Page With JavaScript to Load in Selenium WebDriver
Filed under Testing, Uncategorized
Explore various strategies for waiting until a JavaScript-heavy page is fully loaded in Selenium WebDriver.
Read-Write and Read-Only Transaction Routing With Spring
Filed under Spring Persistence
Learn to do transaction-based routing with Spring: send write operations to a primary database and read-only operations to a replica.
Proxy Authentication in Java
Filed under HTTP Client-Side, Security
Learn how to configure proxy authentication using Java 11+ HttpClient, Apache HttpClient, Spring’s RestTemplate, and Spring’s WebClient.
Dapr Workflows With PubSub
Filed under Architecture
Learn how to combine Dapr PubSub with Dapr Workflows, to create a system that handles event-driven messaging and complex multi-step processes.
Guide to Jersey Logging on Server
Filed under Logging
Learn how Jersey makes enabling and customizing server-side logging easy.
Preventing Jackson From Fetching Lazy Entity Fields
Working with JPA and Jackson often raises the challenge of serializing entities that contain lazy-loaded associations. This tutorial shows how to prevent Jackson from triggering unwanted database queries when lazy fields are uninitialized; we’ll look at DTOs, annotations, and Jackson’s own jackson-datatype-hibernate6 module.
TupleTransformer and ResultListTransformer in Hibernate
Filed under Persistence
While JPQL projections solve many cases, sometimes we need more flexibility, like mapping complex DTOs, restructuring query results, or post-processing the entire result set. Hibernate’s former answer for this is ResultTransformer. Hibernate 6, however, replaces it with two new interfaces. This article shows how to work with TupleTransformer for row-level transformations and ResultListTransformer for list-level processing.
Using HTTPS With Jersey Client in Java
Filed under HTTP Client-Side, Security
Configuring Java clients for HTTPS or for mTLS can be tricky. It’s tempting to add some kind of trust-all-certs solution and call it good. Fortunately there are Java libraries like Jersey that can help us make the right decisions.