@Value autowire问题

Question

public class Tested{

    @Value("${delimiter}")
    protected String delimiter;

}

 @Value("${delimiter}")   
 protected String delimiter;

 @Test    
 public void test() {         
      fail("Not yet implemented");    
 }  

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:beans="http://www.springframework.org/schema/beans" 
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <context:property-placeholder location="classpath*:test.properties" />

</beans>

delimiter = ||| 

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.lang.String com.Tester.delimiter; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'delimiter' in string value "${delimiter}"
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
    ... 28 more
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'delimiter' in string value "${delimiter}" ...

Answer 1

对于maven，测试使用的资源是放在resources文件夹中的资源，通常是src\test\resources

在您的示例中，将test.properties文件移动到src\test\resources文件夹。

这个类似问题的答案显示了默认的maven行为。