java - Automatically Trim Trailing White Space for properties in Props file loaded into Spring

Question

I'm using PropertiesFactoryBean to load properties from a typical Properties file. Is there anyway to get Spring to automatically trim trailing white space from the prop value?

Answer 1

As this can often be a source of confusion when using Spring Boot, I want to add that you do not need XML configuration to provide your own PropertyPlaceholderConfigurer.

Simply put this in your main class:

  @Bean
  public static PropertySourcesPlaceholderConfigurer createPropertyConfigurer()
  {
    PropertySourcesPlaceholderConfigurer propertyConfigurer = new PropertySourcesPlaceholderConfigurer();
    propertyConfigurer.setTrimValues(true);
    return propertyConfigurer;
  }

This is sufficient for trimming the values from application.properties.