Spring 上下文：找不到属性占位符文件答案

【问题标题】：Spring context:property-placeholder file not foundSpring 上下文：找不到属性占位符文件
【发布时间】：2013-01-24 13:20:26
【问题描述】：

我正在尝试构建一个独立的基于 Spring 的 Java 应用程序。

我正在使用 Maven 程序集插件来构建具有依赖项的 JAR。 JAR 的结构最终看起来像这样（只是一个子集）：

com
META-INF
org
properties
 - taskexecutor.properties
spring
 - properties.xml
.
.
.

清单如下所示：

Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Created-By: Apache Maven
Built-By: authorname
Build-Jdk: 1.6.0_30
Main-Class: com.company.utilities.task.TaskLauncher

当应用程序运行时，应通过包含 properties.xml 文件来配置属性占位符：

<?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:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
    http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-2.5.xsd">

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

</beans>

它在 Eclipse 中运行良好，但是当我运行 JAR 时出现此错误：

Exception in thread "main" org.springframework.beans.factory.BeanInitializationException: Could not load properties; nested exception is java.io.FileN
otFoundException: class path resource [properties/taskExecutor.properties] cannot be opened because it does not exist
        at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:78)
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:663)
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:638)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:407)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
        at com.company.utilities.task.TaskLauncher.main(TaskLauncher.java:28)
Caused by: java.io.FileNotFoundException: class path resource [properties/taskExecutor.properties] cannot be opened because it does not exist
        at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:158)
        at org.springframework.core.io.support.PropertiesLoaderSupport.loadProperties(PropertiesLoaderSupport.java:181)
        at org.springframework.core.io.support.PropertiesLoaderSupport.mergeProperties(PropertiesLoaderSupport.java:161)
        at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:69)
        ... 6 more

有什么想法吗？

【问题讨论】：

标签： java spring maven jar maven-assembly-plugin

【解决方案1】：

将 taskExecutor.properties 移至 root 并尝试

<context:property-placeholder location="taskExecutor.properties"/>

【讨论】：

【解决方案2】：

通过命令行运行似乎区分大小写，但加载这些资源时 Eclipse 不区分。

将taskexecutor.properties 重命名为taskExecutor.properties 解决了这个问题。哎呀。希望这可以帮助将来像我一样愚蠢的人;-)

【讨论】：