Spring Boot无法从依赖项模块中找到classpath属性

Question

我目前有一个Spring Boot应用程序，它依赖于Java模块。这个Java模块有一些类路径属性。当我从Spring Boot应用程序的Java模块中@autowired了一个bean，并用@bean注释定义这个bean，然后运行Spring Boot应用程序时，它将抛出错误。

2017-02-07 12:16:03.188  WARN 17620 --- [on(4)-127.0.0.1] ationConfigEmbeddedWebApplicationContext : 
Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'MyService': Unsatisfied dependency expressed through method 'setClassPathProperty' parameter 0; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.expression.spel.SpelEvaluationException: EL1008E: Property or field 'myClassPathProperties' cannot be found on object of type 'org.springframework.beans.factory.config.BeanExpressionContext' - maybe not public?

src/main/resources/myproject-context.xml
<util:properties id="myClassPathProperties" location="classpath:myproject.properties" />

@Value("#{myClassPathProperties['property.x']}")
public void setClassPathProperty(String x) {
    this.x = x;
}

@Bean (name = "mailSubscriptionDao")
public MyService getMyService() {
    return new MyServiceImpl();
}

Answer 1

尝试注入整个properties对象

@Autowired    
Properties myClassPathProperties;

如果这样做有效，您就知道您已经正确加载了myproject-context.xml。您还可以使用调试器查看名为'property.x'的属性是否存在。