Spring MVC 3 Validation 10. Spring Expression Language (SpEL) Introduction Evaluation EvaluationContext Type conversion Parser configuration SpEL compilation Compiler configuration Compiler limitations Cache Resolution Custom cache resolution Synchronized caching Conditional caching Available caching SpEL evaluation context @CachePut annotation @CacheEvict annotation @Caching annotation @CacheConfig annotation by many other Spring modules org.springframework spring- expression Spring Expression Language (SpEL) GroupId ArtifactId Description org.springframework spring- instrument Instrumentation agent for

Expression Language (SpEL) Introduction Feature Overview Expression Evaluation using Spring’s Expression Interface The EvaluationContext interface Type Conversion Parser configuration SpEL compilation Compiler Cache Resolution Custom cache resolution Synchronized caching Conditional caching Available caching SpEL evaluation context @CachePut annotation @CacheEvict annotation @Caching annotation @CacheConfig annotation by many other Spring modules org.springframework spring- expression Spring Expression Language (SpEL) GroupId ArtifactId Description org.springframework spring- instrument Instrumentation agent for

Condition annotations Class conditions Bean conditions Resource conditions Web Application Conditions SpEL expression conditions 30. What to read next V. Production-ready features 31. Enabling production-ready has a StandardServletEnvironment. SpEL expression conditions The @ConditionalOnExpression annotation allows configuration to be skipped based on the result of a SpEL expression. Chapter 30. What to read separated). Look for @ConditionalOnExpression annotations that switch features on and off in response to SpEL expressions, normally evaluated with place-holders resolved from the Environment. Customize the Environment

Condition annotations Class conditions Bean conditions Resource conditions Web Application Conditions SpEL expression conditions 33. What to read next V. Spring Boot Actuator: Production-ready features has a StandardServletEnvironment. SpEL expression conditions The @ConditionalOnExpression annotation allows configuration to be skipped based on the result of a SpEL expression. Chapter 33. What to read separated). Look for @ConditionalOnExpression annotations that switch features on and off in response to SpEL expressions, normally evaluated with place-holders resolved from the Environment. Customize the Environment

Condition annotations Class conditions Bean conditions Resource conditions Web Application Conditions SpEL expression conditions 33. What to read next V. Spring Boot Actuator: Production-ready features has a StandardServletEnvironment. SpEL expression conditions The @ConditionalOnExpression annotation allows configuration to be skipped based on the result of a SpEL expression. Chapter 33. What to read separated). Look for @ConditionalOnExpression annotations that switch features on and off in response to SpEL expressions, normally evaluated with place-holders resolved from the Environment. Customize the Environment

Condition annotations Class conditions Bean conditions Resource conditions Web Application Conditions SpEL expression conditions 33. What to read next V. Spring Boot Actuator: Production-ready features has a StandardServletEnvironment. SpEL expression conditions The @ConditionalOnExpression annotation allows configuration to be skipped based on the result of a SpEL expression. Chapter 33. What to read separated). Look for @ConditionalOnExpression annotations that switch features on and off in response to SpEL expressions, normally evaluated with place-holders resolved from the Environment. Customize the Environment

Condition annotations Class conditions Bean conditions Resource conditions Web Application Conditions SpEL expression conditions 33. What to read next V. Spring Boot Actuator: Production-ready features has a StandardServletEnvironment. SpEL expression conditions The @ConditionalOnExpression annotation allows configuration to be skipped based on the result of a SpEL expression. Chapter 33. What to read separated). Look for @ConditionalOnExpression annotations that switch features on and off in response to SpEL expressions, normally evaluated with place-holders resolved from the Environment. Customize the Environment

Condition annotations Class conditions Bean conditions Resource conditions Web Application Conditions SpEL expression conditions 33. What to read next V. Spring Boot Actuator: Production-ready features has a StandardServletEnvironment. SpEL expression conditions The @ConditionalOnExpression annotation allows configuration to be skipped based on the result of a SpEL expression. Chapter 33. What to read separated). Look for @ConditionalOnExpression annotations that switch features on and off in response to SpEL expressions, normally evaluated with place-holders resolved from the Environment. Customize the Environment

Class Conditions Bean Conditions Property Conditions Resource Conditions Web Application Conditions SpEL Expression Conditions Testing your Auto-configuration Simulating a Web Context Overriding the Classpath @Value: Feature @ConfigurationProperties @Value Relaxed binding Yes No Meta-data support Yes No SpEL evaluation No Yes If you define a set of configuration keys for your own components, we recommend candidate if you need to provide the value by using environment variables. Finally, while you can write a SpEL expression in @Value, such expressions are not processed from application property files. Chapter

Class Conditions Bean Conditions Property Conditions Resource Conditions Web Application Conditions SpEL Expression Conditions Creating Your Own Starter Naming autoconfigure Module Starter Module 47 @Value: Feature @ConfigurationProperties @Value Relaxed binding Yes No Meta-data support Yes No SpEL evaluation No Yes If you define a set of configuration keys for your own components, we recommend candidate if you need to provide the value by using environment variables. Finally, while you can write a SpEL expression in @Value, such expressions are not processed from Application property files. Chapter