How to avoid the error 'junit-vintage' failed to discover tests when using Spring Boot.

Tue, 30 Jun 2020 21:24 by Jamie Tanna . #blogumentation #spring-boot #java #junit.

Spring Boot Hello World Example - Thymeleaf - Mkyong.com

Recommended read: Spring Boot Hello World Example - Thymeleaf - Mkyong.com https://mkyong.com/spring-boot/spring-boot-hello-world-example-thymeleaf/

Sun, 28 Jun 2020 19:53 by Jamie Tanna . #spring-boot #thymeleaf #java.

Article

Using @Mock as a Method Parameter with Mockito (2 mins read).

Using @Mock on method parameters to reduce manual mock setups with Mockito.

Sat, 27 Jun 2020 14:21 by Jamie Tanna . #blogumentation #java #mockito.

Article

Keeping Track of Certificate Expiry with a JWKS to iCalendar Converter (4 mins read).

Creating an iCalendar feed for certificate expiry details, given a URI for a JSON Web Key Set.

Sun, 14 Jun 2020 22:14 by Jamie Tanna . #java #jwks #certificates #jwks-ical #calendar #google-cloud #serverless.

Article

How to Run Java on the Command-Line to Attach a Debugger (1 mins read).

How to run java on the command-line, and make it possible to attach a debugger.

Fri, 29 May 2020 23:15 by Jamie Tanna . #blogumentation #java #command-line.

Article

Extract a Public Cert from a Java Keystore/Truststore (1 mins read).

How to export the public certificate from a Java keystore.

Fri, 29 May 2020 22:07 by Jamie Tanna . #blogumentation #java #keystore #certificates.

Article

Evicting Spring Cache on a Schedule (1 mins read).

How to evict Spring Cache's @Cacheable data on a schedule.

Fri, 29 May 2020 10:20 by Jamie Tanna . #blogumentation #java #spring #spring-cache.

Bookmark

`@API` Guardian

Found this out today, via a colleague, as a good way for your Java library to expose information about the API stability / intent behind classes.

Recommended read: `@API` Guardian https://github.com/apiguardian-team/apiguardian

Wed, 27 May 2020 18:32 by Jamie Tanna . #java.

Article

How to avoid HttpMessageNotReadableException when using ContentCachingRequestWrapper with Java Servlet Filters (1 mins read).

How to avoid receiving Required request body is missing errors when using a ContentCachingRequestWrapper.

Mon, 25 May 2020 19:56 by Jamie Tanna . #blogumentation #java #spring #servlet.

Article

Reading a Servlet/Spring Request Body Multiple Times (3 mins read).

How to read the request body more than once using Java Servlet Filters.

Mon, 25 May 2020 19:56 by Jamie Tanna . #blogumentation #java #spring #servlet.

Article

Disabling @Valid Annotation in a Spring Integration Test (1 mins read).

How to disable @Valid validation in Spring Integration Tests.

Mon, 18 May 2020 19:44 by Jamie Tanna . #blogumentation #java #spring #spring-boot.

Note

#Java friends testing using #RestAssured, you may enjoy my article https://www.jvt.me/posts/2020/05/18/rest-assured-curl/ which can help you convert its logs to curl requests, for cases you need to do some manual testing, too

Mon, 18 May 2020 16:27 by Jamie Tanna . #java #rest-assured.

Article

Running Spotless Automagically with Gradle (2 mins read).

How to set Gradle configuration globally to always run spotlessApply in your projects.

Fri, 15 May 2020 16:54 by Jamie Tanna . #blogumentation #gradle #spotless #java.

Bookmark

java - How to disable spring security for particular url - Stack Overflow

Recommended read: java - How to disable spring security for particular url - Stack Overflow https://stackoverflow.com/questions/30366405/how-to-disable-spring-security-for-particular-url/30366773#30366773

Thu, 14 May 2020 18:17 by Jamie Tanna . #java #spring-security.

Bookmark

AWS Lambda Java Tutorial: Best Practices to Lower Cold Starts

Recommended read: AWS Lambda Java Tutorial: Best Practices to Lower Cold Starts https://www.capitalone.com/tech/cloud/aws-lambda-java-tutorial-reduce-cold-starts/

Wed, 06 May 2020 19:30 by Jamie Tanna . #java #lambda.

Bookmark

How to resolve "Can't start redis server. Check logs for details" with embedded-redis

Recommended read: How to resolve "Can't start redis server. Check logs for details" with embedded-redis https://github.com/kstyrc/embedded-redis/issues/51#issuecomment-549726148

Thu, 23 Apr 2020 18:52 by Jamie Tanna . #java #redis.

Bookmark

Java records demystified

Recommended read: Java records demystified https://isank.dev/posts/java-14-records/

Wed, 22 Apr 2020 11:48 by Jamie Tanna . #java.

Bookmark

Announcing the Spring Authorization Server

Recommended read: Announcing the Spring Authorization Server https://spring.io/blog/2020/04/15/announcing-the-spring-authorization-server

Mon, 20 Apr 2020 07:27 by Jamie Tanna . #spring #java #oauth2.

Article

Tomcat May Log Cookies Out-of-the-Box (3 mins read).

Warning you about cookies being logged out-of-the-box, and how to resolve it.

Tue, 07 Apr 2020 21:44 by Jamie Tanna . #blogumentation #security #java #tomcat #spring-boot.

Article

Providing Custom Serialization for Map Keys in Jackson (1 mins read).

How to configure Jackson to use a custom method to serialise keys for a Map.

Tue, 07 Apr 2020 18:37 by Jamie Tanna . #blogumentation #java #jackson #json.

Bookmark

Comparison table of Java's `HttpServletFilter`'s methods

Recommended read: Comparison table of Java's `HttpServletFilter`'s methods https://stackoverflow.com/questions/4931323/whats-the-difference-between-getrequesturi-and-getpathinfo-methods-in-httpservl/21046620#21046620

Tue, 31 Mar 2020 14:48 by Jamie Tanna . #java.

Article

Extract a Private Key from a Java Keystore (1 mins read).

How to export an asymmetric PrivateKeyEntry entry from a Java keystore.

Fri, 20 Mar 2020 23:57 by Jamie Tanna . #blogumentation #java #keystore #certificates.

Bookmark

That upgrade from Java 8 to 11 you've been putting off? UK fintech types at Revolut 'quite happy' after a year in production

Recommended read: That upgrade from Java 8 to 11 you've been putting off? UK fintech types at Revolut 'quite happy' after a year in production https://www.theregister.co.uk/2020/03/17/that_upgrade_from_java_8_to_11_revolut_quite_happy_after_a_year_in_production/

Wed, 18 Mar 2020 11:18 by Jamie Tanna . #java.

Like of https://jlorenzen.blogspot.com/2020/02/parameterized-tests-underused-technique.html?m=1

Mon, 02 Mar 2020 21:40 by Jamie Tanna . #java #testing.

Article

How to unzip/decompress a Java JAR file (1 mins read).

How we can use the unzip command to decompress JAR files.

Tue, 25 Feb 2020 20:05 by Jamie Tanna . #blogumentation #java.

Article

Generating HMAC Signatures on the Command Line with OpenSSL (1 mins read).

How to generate HMAC signatures for a given string, using openssl.

Fri, 21 Feb 2020 08:45 by Jamie Tanna . #blogumentation #command-line #openssl #hmac #java.

Bookmark

Records Come to Java

Meant to share this a couple of weeks ago - this is really great, and was very timely after a presentation from a colleague about #Kotlin, and the fact that the data class that Kotlin has is very cool. Still a while away from my own Java code but interesting nonetheless!

Recommended read: Records Come to Java https://blogs.oracle.com/javamagazine/records-come-to-java

Wed, 05 Feb 2020 10:32 by Jamie Tanna . #java #kotlin.

Article

Generate Plain Old Java Objects (POJOs) from XML Schema Definitions with xjc (4 mins read).

How to generate POJOs really quickly and easily, with no manual work, using the xjc command.

Mon, 03 Feb 2020 20:52 by Jamie Tanna . #blogumentation #java #xml.

Bookmark

What's the best way to build a string of delimited items in Java?

Recommended read: What's the best way to build a string of delimited items in Java? https://stackoverflow.com/a/63258

Sat, 01 Feb 2020 02:27 by Jamie Tanna . #java.

Bookmark

First look at Cloud Native Buildpacks support in Spring Boot 2.3 Milestone 1

This is very cool. I've been thinking about containerising my personal APIs for this site, and I guess this would remove a lot of the work! Looking forward to playing with this once it's released.

Recommended read: First look at Cloud Native Buildpacks support in Spring Boot 2.3 Milestone 1 https://medium.com/@TimvanBaarsen/first-look-at-cloud-native-buildpacks-support-in-spring-boot-2-3-milestone-1-ece8e72ed93f

Sun, 26 Jan 2020 10:58 by Jamie Tanna . #java #docker.

Bookmark

Records Come to Java

This is very interesting to hear just days after a colleague gives a compelling introduction to Kotlin of which one key selling point (to me at least) is reducing boilerplate for Plain Old Java Objects (POJOs) that are effectively data-only objects.

That being said, it's still a way off compared to Java 8, and could be nice to try out Kotlin a bit more.

Recommended read: Records Come to Java https://blogs.oracle.com/javamagazine/records-come-to-java

Sat, 18 Jan 2020 21:45 by Jamie Tanna . #java #kotlin.

Bookmark

Actuator HTTP Trace Does Not Work With Spring Boot 2.2.x

Recommended read: Actuator HTTP Trace Does Not Work With Spring Boot 2.2.x https://juplo.de/actuator-httptrace-does-not-work-with-spring-boot-2-2/

Fri, 17 Jan 2020 17:54 by Jamie Tanna . #spring #java #spring-boot.

Article

Performing Mutual TLS Authentication with Rest Assured (via Apache HTTP Client) (3 mins read).

How to configure Rest Assured to perform Mutual TLS authentication against an API.

Tue, 14 Jan 2020 19:27 by Jamie Tanna . #blogumentation #certificates #mutual-tls #java #rest-assured.

Article

2018 in Review (25 mins read).

Looking back at 2018 as a whole - both the positives and negatives, and looking forward to 2019.

Sun, 12 Jan 2020 12:05 by Jamie Tanna . #job #reader-mail #capital-one #java #appendix #holiday #www.jvt.me #indieweb #personal #mental-health #year-in-review.

Article

Gotcha: Running both JUnit4 and JUnit5 Together with Gradle (1 mins read).

How to make sure your JUnit4 and JUnit5 Gradle tests work within the same project.

Mon, 23 Dec 2019 21:57 by Jamie Tanna . #blogumentation #java #gradle #junit.

Article

Gotcha: Running both JUnit4 and JUnit5 Together with Maven (1 mins read).

How to make sure your JUnit4 and JUnit5 Maven tests work within the same project.

Mon, 23 Dec 2019 21:57 by Jamie Tanna . #blogumentation #java #maven #junit.

Bookmark

Warning about Java's `DateTimeFormatter`

A subtle and not so fun source of bugs if you're affected - worth investigating!

Recommended read: Warning about Java's `DateTimeFormatter` https://twitter.com/NmVAson/status/1207820284268597249

Sat, 21 Dec 2019 00:41 by Jamie Tanna . #java.

Article

Setting Your Maven Project Versions (1 mins read).

How to set the versions of all Maven pom.xmls within a Maven project.

Sun, 20 Oct 2019 14:39 by Jamie Tanna . #blogumentation #maven #java.

Article

Listing the Contents of a Java Truststore (3 mins read).

How to extract a list of trusted certificates from a Java Trust store.

Wed, 16 Oct 2019 13:23 by Jamie Tanna . #blogumentation #java #certificates.

Bookmark

Don't Put Fat Jars in Docker Images

Recommended read: Don't Put Fat Jars in Docker Images https://phauer.com/2019/no-fat-jar-in-docker-image/

Wed, 16 Oct 2019 12:08 by Jamie Tanna . #docker #java.

Article

Testing Your SLF4J Logs (3 mins read).

Looking at how we would unit test our SLF4J logs to gain confidence they work, and to catch regressions in the future.

Sun, 22 Sep 2019 14:16 by Jamie Tanna . #blogumentation #testing #java.

Article

Extracting Request Parameters Dynamically for a application/x-www-form-urlencoded Request (1 mins read).

How to access all key-value pairs of parameters sent in a application/x-www-form-urlencoded request.

Sun, 08 Sep 2019 14:04 by Jamie Tanna . #blogumentation #java #spring.

Article

Extracting Request Parameters Dynamically for a multipart/form-data Request (2 mins read).

How to access all key-value pairs of parameters sent in a multipart/form-data request.

Sun, 08 Sep 2019 14:04 by Jamie Tanna . #blogumentation #java #spring.

Article

Extract a Secret Key from a Java Keystore (2 mins read).

How to export a symmetric SecretKey entry from a Java keystore.

Fri, 02 Aug 2019 23:43 by Jamie Tanna . #blogumentation #java #keystore #certificates.

Article

Verify if a field in a JSON response is not set with Rest Assured (1 mins read).

How to verify whether a field is not present in a JSON Rest Assured Response.

Tue, 23 Apr 2019 22:07 by Jamie Tanna . #blogumentation #java #rest-assured #json.

Article

Pretty Print JSON with Java (1 mins read).

How to pretty print a JSON object using Java and Jackson.

Tue, 23 Apr 2019 21:22 by Jamie Tanna . #blogumentation #java #json #pretty-print.

Article

Gotcha: URL Encoding for consecutive double slashes issue with Rest Assured (2 mins read).

How to workaround consecutive double slashes being URL encoded (as %2Fs) in Rest Assured.

Mon, 15 Apr 2019 22:16 by Jamie Tanna . #blogumentation #java #rest-assured.

Article

Prettier HTML Reports for Cucumber-JVM (2 mins read).

How to generate prettier HTML reports for Cucumber with cucumber-reporting and cucumber-reporting-plugin, with and without Jenkins.

Sun, 07 Apr 2019 21:40 by Jamie Tanna . #blogumentation #java #cucumber #testing #reporting.

Article

Creating a versionable, self-contained (fat-/uber-) JAR for Gatling tests (17 mins read).

Why you'd want a fat JAR for your Gatling tests and how you'd achieve it.

Mon, 19 Nov 2018 22:46 by Jamie Tanna . #blogumentation #java #gatling #testing #jar #artifact #artefact #maven #uber-jar.

Article

Creating a versionable, self-contained (fat-/uber-) JAR for Cucumber tests (11 mins read).

Why you'd want a fat JAR and how you'd achieve it.

Wed, 15 Aug 2018 10:23 by Jamie Tanna . #blogumentation #java #cucumber #testing #jar #artifact #artefact #maven #uber-jar.

Tag java