尝试运行可执行jar文件时,我遇到“循环占位符引用”异常。这是详细的例外。
org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'postProcessProperties' defined in class path resource [applicationContext.xml]: Circular placeholder reference 'processor.core.poolsize' in property definitions
[echo] at org.springframework.beans.factory.config.PropertyPlaceholderConfigurer.processProperties(PropertyPlaceholderConfigurer.java:287)
[echo] at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:75)
[echo] at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:663)
[echo] at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:638)
[echo] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:407)
[echo] at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:139)
[echo] at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:83)
[echo] at com.autodesk.postprocess.engine.PostProcessEngine.start(PostProcessEngine.java:39)
[echo] at com.autodesk.postprocess.engine.PostProcessEngine.main(PostProcessEngine.java:29)
这是一个spring应用程序,它使用外部属性文件在启动时读取值。这是春天的定义。到目前为止,这种方法运作良好。
<bean id="propertyConfig"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_NEVER" />
<property name="ignoreResourceNotFound" value="true" />
<property name="locations">
<list>
<value>classpath:/postprocess.properties</value>
</list>
</property>
<property name="properties">
<props>
<prop key="processor.core.poolsize">${processor.core.poolsize}</prop>
<prop key="processor.max.poolsize">${processor.max.poolsize}</prop>
</props>
</property>
</bean>
<bean id="postProcessProperties"
class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="properties">
<props>
<prop key="processor.core.poolsize">${processor.core.poolsize}</prop>
<prop key="processor.max.poolsize">${processor.max.poolsize}</prop>
<prop key="processor.polling.delay">${processor.polling.delay}</prop>
<prop key="processor.polling.period">${processor.polling.period}</prop>
</property>
</bean>
我正在使用shade插件生成jar文件。这是一个片段
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.7.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>com.test.postprocess.engine.PostProcessEngine</mainClass>
</transformer>
<transformer
implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/spring.handlers</resource>
</transformer>
<transformer
implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/spring.schemas</resource>
</transformer>
</transformers>
<filters>
<filter>
<artifact>:</artifact>
<excludes>
<exclude>META-INF/.SF</exclude>
<exclude>META-INF/.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
</configuration>
</execution>
</executions>
</plugin>
我不确定是什么导致了这个问题,因为我之前在其他可执行jar文件中使用了类似的模式。
任何指针都会受到赞赏。
由于
答案 0 :(得分:11)
它可能很晚才回答这个问题,但为了面对类似问题的人的利益而添加它。
我可以通过更改密钥名称来修复它。 e.g。
<prop key="processor.core.poolsize">${processor.core.poolsize}</prop>
<prop key="processor.max.poolsize">${processor.max.poolsize}</prop>
更改为
<prop key="processor.core.poolsize">${core.poolsize}</prop>
<prop key="processor.max.poolsize">${max.poolsize}</prop>
property-placeholder键和要过滤的属性值的键不能相同。
答案 1 :(得分:4)
Circular placeholder reference XXXX in property definitions
当您的属性键名称和值变量名称完全相同时,spring-framework
会引发上述异常。
确保您的财产看起来不像
key={$key}
。保持键名称和值的不同名称将解决此问题。
答案 2 :(得分:1)
I was having the same issue when trying to run a spring integration test using SpringJUnit4ClassRunner. I was unsure of how to get my properties file loaded and after a few mis-steps, I found the @TestPropertySource annotation that allowed me to define the properties file(s) needed.
I had tried @PropertySource before that, and it does not work when you are running a spring integration test like this.
Hopefully this helps someone else.
答案 3 :(得分:0)
可能无法找到资源 - postprocess.properties
。你能否删除这一行 -
<property name="ignoreResourceNotFound" value="true" />
然后,如果找不到资源,则应显示相应的消息。
答案 4 :(得分:0)
在您的 java 代码中,如果您使用在除 application.properties
或 application.yaml
之外的某些 .properties 或 yaml 文件中声明的键,您当您尝试运行 Spring 应用程序而不指定要使用的配置文件时,将收到此异常。
解决办法: 就我而言,我使用的是 Spring Boot 2.4,这是告诉您的应用将使用哪个配置文件的一种方法:
命令行:
java -jar -Dspring.profiles.active=DEV myapp.jar
如果您通过 IntelliJ 等 IDE 运行您的应用:
运行 -> 编辑配置
在您的 Spring Config 中,指定您想要激活的配置文件(以逗号分隔):