spring-el

Passing varargs to Spring spEL causes “Method cannot be found on com.sun.proxy”

由 我只是一个虾纸丫 提交于 2019-12-04 05:31:56
问题 I try to write custom class for permissions evaluation, so it can be used with Spring Security @PreAuthorize and Spring Expression Language like for example this ( authority is just a regular Spring component with some role names): @PreAuthorize("@permissionEvaluator.anyOfRoles(@authority.ADMIN)") The PermissionEvaluator#anyOfRoles method declaration looks like follows: boolean anyOfRoles(String... roles) As shown this method takes varargs of String type. It works fine when only one parameter

How to run nested evaluations in Spring Expression Language

由 北战南征 提交于 2019-12-04 04:49:10
问题 I want to Use SPeL and I need to evaluate a parameter from a configuration source. The problem is that the name/key is dynamic. So I rely on one parameter to resolve the other. I basically need to check a Boolean parameter. Example: partial key/prefix: app.name full key: ${app.name}.feature.isEnabled So, in SPeL I try something like: #{'${app.name}.feature.isEnabled' != null && !'${app.name}.feature.isEnabled'} But this compiles but doesn't work. If app.name=my-app, the above resolves to

Using Spring beans as a key with @Cacheable annotation

由 笑着哭i 提交于 2019-12-03 20:31:38
问题 How to make following to work: - a spring bean that has a method that should be cached with @Cacheable annotation - another spring bean that creates keys for the cache (KeyCreatorBean). So the code looks something like this. @Inject private KeyCreatorBean keyCreatorBean; @Cacheable(value = "cacheName", key = "{@keyCreatorBean.createKey, #p0}") @Override public List<Examples> getExamples(ExampleId exampleId) { ... However the above code doesn't work: it gives following exception: Caused by:

Spring Expression Language - Java 8 forEach or stream on list

由 心不动则不痛 提交于 2019-12-03 19:31:17
问题 Is it possible for stream or forEach on list in SpEL? e.g. List<String> x = new LinkedList<>(Arrays.asList("A","AAB")); ExpressionParser parser = new SpelExpressionParser(); StandardEvaluationContext context = new StandardEvaluationContext(x); parser.parseExpression("x.stream().map(x -> x.replaceAll(\"A\", \"B\")).collect(Collectors.toList())").getValue(context)) 回答1: SpEL is not Java, it's a different language; the acronym stands for Spring Expression Language . It doesn't understand Java8

Spring 3.1 cache - how to use the returned value in the SpEL

由 倾然丶 夕夏残阳落幕 提交于 2019-12-03 19:05:00
I am trying to make an eviction of an entry in a Spring-managed cache (Spring 3.1 abstraction). I need to refer to the returned value of the method in the SpEL of the "key" property in the annotation: /* (How to refer to the 'T' returned value in the "KEY_ID"?) */ @Caching(evict = { @CacheEvict(value = CACHE_BY_ID, key = KEY_ID) }) public T delete(AppID appID, UserID userID) throws UserNotFoundException { return inner.delete(appID, userID); } Is there any way to do this? It doesn't seem like there is any way to reference the returned object: http://static.springsource.org/spring/docs/3.1.x

Injecting property values from property file or xml file into PreAuthorize(…) java annotation (Unresolved)

由 不想你离开。 提交于 2019-12-03 16:24:29
I've asked this question in my previous post here: SpEL for spring security: Passing Values from XML to Java based SpEL configuration . But it wasn't yet resolved. I want to inject values either from an xml configuration or from external file into @PreAuthorize(...) annotation. It is not easy like injecting by using @Value annotation. To recall the question, I provide the following information. I have the following xml configuration file (example.xml) that has properties and initialized its corresponding values. <beans> <bean id="userBean" class="x.y.User"> <property name="name" value="A"/>

Spring @Value TypeMismatchException:Failed to convert value of type 'java.lang.String' to required type 'java.lang.Double'

由 ぐ巨炮叔叔 提交于 2019-12-03 08:17:30
问题 I want to use the @Value annotation to inject a Double property such as: @Service public class MyService { @Value("${item.priceFactor}") private Double priceFactor = 0.1; // ... and using Spring property placeholder (Properties files): item.priceFactor=0.1 I get Exception: org.springframework.beans.TypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'java.lang.Double'; nested exception is java.lang.NumberFormatException: For input string: "${item

How to define default null value in application.yml in Spring Boot

由 回眸只為那壹抹淺笑 提交于 2019-12-03 02:55:49
I'm trying to define the default value as null value in application.yml with SpringBoot version 1.3.0.RELEASE. The goal is be able to refer it with a class with ConfigurationProperties annotation -- application.yml -- test.foo: ${test.bar:#{null}} but it doesn't work. If the value of test.bar is not defined, set test.foo to null (default value) I already have spring-el in my dependencies. I don't want to use PropertyPlaceholderConfigurer.setNullValue It's seem to work in @Value but not in application.yml (see http://farenda.com/spring/spring-inject-null-value/ ) It's a bug, or yaml is not

Spring @Value TypeMismatchException:Failed to convert value of type 'java.lang.String' to required type 'java.lang.Double'

由 时光总嘲笑我的痴心妄想 提交于 2019-12-02 23:36:42
I want to use the @Value annotation to inject a Double property such as: @Service public class MyService { @Value("${item.priceFactor}") private Double priceFactor = 0.1; // ... and using Spring property placeholder (Properties files): item.priceFactor=0.1 I get Exception: org.springframework.beans.TypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'java.lang.Double'; nested exception is java.lang.NumberFormatException: For input string: "${item.priceFactor}" Is there a way to use a Double value coming from a properties file? Try changing the following

Spring 3: Inject Default Bean Unless Another Bean Present

由 依然范特西╮ 提交于 2019-12-02 22:59:26
I would like to configure Spring via XML such that if a particular bean exists, it will be injected into the target bean. If it does not exist, a different, default bean, will be injected. For example if I have a file like this <bean id="carDriver" class="Driver"> <property name="car" value="SOME EXPRESSION GOES HERE, SEE ATTEMPT BELOW"/> </bean> <bead id="defaultCar" class="Car"> <property name="name" value="Honda Accord"/> </bean> And load it, I would like the defaultCar injected into the driver. However, if I also load the following file: <bean id="customCar" class="FlyingCar"> <property
订阅 spring-el