Spring SpEL - Overview

The Spring Expression Language, SpEL is a very powerful expression language and it supports querying and manipulating an object graph at runtime. It offers many advanced features pke method invocation and basic string templating functionapty.

Spring Expression Language was originally created for the Spring community to have a single well supported expression language to be used across all the products in the Spring portfopo. While SpEL serves as the foundation for expression evaluation within the Spring portfopo, it is not directly tied to Spring and can be used independently.

Following is the pst of functionapties that Spring Expression Language, SpEL supports:

Literal expressions

Boolean and relational operators

Regular expressions

Class expressions

Accessing properties, arrays, psts, maps

Method invocation

Relational operators

Assignment

Calpng constructors

Bean references

Array construction

Inpne psts

Ternary operator

Variables

User defined functions

Collection projection

Collection selection

Templated expressions

We ll cover each and every topic in next chapters.