CODEWITHSUNDEEP
javaspringspring-mvc
Bikash Shaw
Bikash Shaw

Reputation: 49

How to read external properties with dynamic file using Spring Boot

I want to perform something similar to the following code using Spring

class MyPropotypeBean {

    /* We can not for static file name like 
    * @ConfigurationProperties(prefix = "abcd", locations = "file:conf/a2z.properties")
    */
    public MyPropotypeBean(String propFileLocation) {
        Properties prop = new Properties();
        InputStream input = null;

        try {
                input = new FileInputStream(propFileLocation);
                prop.load(input);
                gMapReportUrl = prop.getProperty("gMapReportUrl");
        } catch (IOException ex) {
                ex.printStackTrace();
        } finally {
                ...
        }

    }
}

I want propFileLocation dynamically injected something similar to the following.

@ConfigurationProperties(prefix = "abcd", locations = "file:conf/" + propFileLocation + ".properties")

I know we cannot achieve using annotation. How Can I do it pragmatically?

Upvotes: 0

Views: 1977

Answers (1)

Mohammed Abdullah
Mohammed Abdullah

Reputation: 175

You can use Spring ResourceBundleMessageSource. It helps to load external properties. Have a look at here. 

@Value("${file.directory}")
private String propFileLocation;
//getters and setters
 @Bean
 public MessageSource messageSource() {
   ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
   messageSource.setBasenames("file:conf/"+propFileLocation);
   messageSource.setDefaultEncoding("UTF-8");
   return messageSource;
 }

Upvotes: 1

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