Spring properties file get element as an Array

Question

I m loading properties attributes from a  properties file using Spring as follows   file  elements properties base module elementToSearch 1 base module elementToSearch 2 base module elementToSearch 3 base module elementToSearch 4 base module elementToSearch 5 base module elementToSearch 6   The spring xml file  file  myapplication xml  lt bean id  some        class  com some Class  gt         lt property name  property  value    base module elementToSearch     gt   lt  bean gt    And my Class java  file  Class java public void setProperty final List lt Integer gt  elements       this elements   elements      But when debugging  the parameter elements only get the last element into the list  so  there is a list of one element with value  6   instead of a list with 6 elements   I tried other approaches  like adding in value only   base module  but then it finds no parameter in the properties file   A workaround is to have in elements properties file a list separated by commas  like   base module elementToSearch 1 2 3 4 5 6   and use it as a String and parse it  but is there a better solution

User · Answer

If you need to pass the asterisk symbol  you have to wrap it with quotes    In my case  I need to configure cors for websockets  So  I decided to put cors urls into application yml  For prod env I ll use specific urls  but for dev it s ok to use just     In yml file I have   websocket    cors        In Config class I have    Value    websocket cors    private String   cors

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Here is an example of how you can do it in Spring 4 0   application properties content   some key yes no cancel   Java Code    Autowire private Environment env        String   springRocks   env getProperty  some key   String   class

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With a Spring Boot one can do the following   application properties  values 0  abc values 1  def   Configuration class  import org springframework boot context properties ConfigurationProperties  import org springframework stereotype Component   import java util ArrayList  import java util List    Component  ConfigurationProperties public class Configuration        List lt String gt  values   new ArrayList lt  gt          public List lt String gt  getValues             return values             This is needed  without this class or without the values in class it is not working   Spring Boot Application class  import org slf4j Logger  import org slf4j LoggerFactory  import org springframework beans factory annotation Value  import org springframework boot CommandLineRunner  import org springframework boot SpringApplication  import org springframework boot autoconfigure SpringBootApplication   import java util List    SpringBootApplication public class SpringBootConsoleApplication implements CommandLineRunner        private static Logger LOG   LoggerFactory getLogger SpringBootConsoleApplication class           notice     is used instead of          Value    configuration values        List lt String gt  values       public static void main String   args            SpringApplication run SpringBootConsoleApplication class  args               Override     public void run String    args            LOG info  values       values

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If you define your array in properties file like   base module elementToSearch 1 2 3 4 5 6   You can load such array in your Java class like this      Value    base module elementToSearch      private String   elementToSearch

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And incase you a different delimiter other than comma  you can use that as well    Value       my config values   split         private String   myValues       could also be a List lt String gt    and  in your application properties you could have  my config values value1  value2  value3

[java] Spring .properties file: get element as an Array

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