Baseline upgrades

Spring Framework 5.0 has JDK 8 and Java EE 7 baseline. Basically, it means that previous JDK and Java EE versions are not supported anymore.

Some of the important baseline Java EE 7 specifications for Spring Framework 5.0 are listed as follows:

• Servlet 3.1
• JMS 2.0
• JPA 2.1
• JAX-RS 2.0
• Bean Validation 1.1

There are many changes to the minimum supported versions of several Java frameworks. The following list contains some of the minimum supported versions of prominent frameworks:

• Hibernate 5
• Jackson 2.6
• EhCache 2.10
• JUnit 5
• Tiles 3

The following list shows the supported server versions:

• Tomcat 8.5+
• Jetty 9.4+
• WildFly 10+
• Netty 4.1+ (for web reactive programming with Spring Web Flux)
• Undertow 1.4+ (for web reactive programming with Spring Web Flux)

Applications using earlier versions of any of the preceding specifications/frameworks need to be upgraded at least to the previously listed versions before they can use Spring Framework 5.0.