Accessing multiple property files with @PropertyResource in Spring

Question

Using the new @PropertySource annotation in Spring 3.1, how can you access multiple property files with Environment?

Currently I have:

@Controller @Configuration  @PropertySource(     name = "props",     value = { "classpath:File1.properties", "classpath:File2.properties" }) public class TestDetailsController {   @Autowired private Environment env; /**  * Simply selects the home view to render by returning its name.  */ @RequestMapping(value = "/", method = RequestMethod.GET) public String home(Locale locale, Model model) {      String file1Name = env.getProperty("file1.name","file1.name not found");             String file2Name = env.getProperty("file2.name","file2.name not found");              System.out.println("file 1: " + file1Name);             System.out.println("file 2: " + file2Name);      return "home"; } 

The result is the correct file name from File1.properties, but file2.name not found. How can access File2.properties?

Answer 1

If you can migrate to Spring 4.x the problem has been solved with the new @PropertySources annotation:

@PropertySources({         @PropertySource("/file1.properties"),         @PropertySource("/file2.properties") }) 

Answer 2

Multiple Properties can be accessed in Spring by either,

• @PropertySource( {"name1", "name2"} )
• @PropertySorces( { @PropertySource("name1"), @PropertySource("name2") } )

Example of @PropertySource,

@PropertySource({         "classpath:hibernateCustom.properties",         "classpath:hikari.properties" }) 

Example of @PropertySources,

@PropertySources({         @PropertySource("classpath:hibernateCustom.properties"),         @PropertySource("classpath:hikari.properties") }) 

After you specify properties path you can access them through Environment instance as you usually did

NOTE: Only these simply did not work for me though

I was getting compilation error as I was using property values to configure my app context. I tried all that I found through web but they did not work for me !

Until I configured Spring context as below,

applicationContext.setServletContext(servletContext); applicationContext.refresh(); 

Example

public class SpringWebAppInitializer implements WebApplicationInitializer{      @Override     public void onStartup(ServletContext servletContext) throws ServletException {         // Create the 'root' Spring application context         AnnotationConfigWebApplicationContext applicationContext = new AnnotationConfigWebApplicationContext();         // register config class i.e. where i used @PropertySource         applicationContext.register(AppContextConfig.class);         // below 2 are added to make @PropertySources/ multi properties file to work         applicationContext.setServletContext(servletContext);         applicationContext.refresh();          // other config     } } 

For your information, I am using Spring 4.3