使用Spring PropertySource无法通过绝对路径找到属性文件

Question

My Spring application throws FileNotFoundException when I try to load external properties file using @PropertySource annotation.

Configuration class:

@Configuration
@PropertySource(value = "file:/home/myuser/dev/app_name.properties")
public class ConfigurationClass {

    @Autowired
    Environment env;

    public Connection getConnection() {
        ...
        String properties = env.getProperty("cbs.url");
        ...
    }
}

Answer 1

Try to give like this

@PropertySource("file:/home/myuser/dev/app_name.properties")

And make sure that file available in that location .
(or)
if you don't want file not found Exception when bootup your application then use below one @PropertySource("file:/home/myuser/dev/app_name.properties",ignoreResourceNotFound=true)

Answer 2

you can override PropertySourcesPlaceholderConfigurer bean and provide file path there.

@Bean
public static PropertySourcesPlaceholderConfigurer propertyPlaceholderConfigurer() {
    PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();
    configurer.setLocations(new Resource[] {
        new FileSystemResource("/some/path/file.properties"),
        new FileSystemResource("/some/path/other-file.properties")
    });
    return configurer;
  }

It can be more flexible by passing the initial path as system param or env variable.

new FileSystemResource(System.getenv("CONFIG_PATH") + "/some/path/file.properties")

After overriding bean, your application configuration could be simple like this.(no need to specify property source)

@Configuration
public class ConfigurationClass {
   ...

   //configurations can be accessed like this

   @Value("${config.variable.name}")
   private String configValue;

}

I hope this helps.