2011年3月16日 · From the Spring docu: "The Spring Expression Language (SpEL for short) is a powerful expression language that supports querying and manipulating an object graph at runtime.

2018年12月17日 · It is actually quite simple to evaluate SpEL, if you have the necessary context information. Please refer to this article in order to find out how to programmatically parse SpEL. As for that context information, you did not explain much about the types of methods you annotated by @CleverCache. The thing is, the pointcut intercepts all annotated methods and I do not know if each one's first ...

2020年5月22日 · I have a simple custom annotation: @Target({ElementType.TYPE}) @Retention(RetentionPolicy.RUNTIME) @Service public @interface SampleDefinition { String description ...

2017年12月12日 · I'm trying to use Spring's expression language (SpEL) to pass a property from my application.yml file into a SpEL method call. I'm in a Spring Boot and Spring Security environment, and I'm trying to do this in the @PreAuthorize annotation.

2019年6月10日 · What is a canonical way to check if the String is null or empty using SpEL? I would like to achieve the same result as Strings.isNullOrEmpty(myString) from Guava does. My candidates: "#myString.?

2018年9月5日 · Spring is able to replace placeholders ${placeholder} with values from configured property sources. This proces simply replaces string key with a string value (and runs it through a converter if needed). Spring Expression Language evaluation - #{spel.expression} Spring is able to run contents of #{} through SPeL interpretter.

In Spring 3 SpEL, #this and #root were introduced. The variable #root is always defined and refers to the root context object. Although #this may vary as components of an expression are eval...

2018年12月17日 · I'm trying to set an Integer property to a default value of 1 if it either does not exist or if its current value is 0 and I can't for the life of me get the 0 comparison to work properly. The ori...

2013年6月24日 · @Ralph, what i want is to evaluate a SpEL expression by hand, in my own custom code, using already existing SecurityExpressionRoot 's and not to extend base SecurityExpressionRoot with some new functions, for usual …

2012年3月29日 · I'm trying to implement a dynamic class attribute for a Spring bean, ultimately set using a combination of a PropertyPlaceHolder property and a SpEL expression.