Spring MVC - Reading properties file using Java Configuration

Question

Values from .properties file could not read due to exception (org.springframework.expression.spel.SpelEvaluationException: EL1008E: Property or field 'genderOptions' cannot be found)

I have configured the property place holder. My property file is having two entries (M=MALE, F=FEMALE) I wanted to populate this as a list of options in checkbox while submitting the form.

@Bean
public static PropertySourcesPlaceholderConfigurer placeHolderConfigurer() {
    return new PropertySourcesPlaceholderConfigurer();
}

@Controller
@RequestMapping("/player")
@PropertySource(ignoreResourceNotFound = true, value = 
"classpath:gender.properties")
public class PlayerController {

@Value("#{genderOptions}") 
public Map<String, String> genderOptions;

@RequestMapping("/playerForm")
public String showPlayerForm(Model model) {

    Player player = new Player();
    model.addAttribute("player", player);
    model.addAttribute("genderOptions", genderOptions);
    return "player-form";
}

Debug your application; in particular, examine what the value of the field is in your controller method. — chrylis -cautiouslyoptimistic-, Apr 05 '20 at 09:37
https://stackoverflow.com/questions/30691949/how-to-inject-a-map-using-the-value-spring-annotation — manikanta nvsr, Apr 05 '20 at 12:39

score 1 · Accepted Answer · edited Apr 06 '20 at 04:23

1

If you want to use genderOptions as Map in the Controller, then first you need specify it in the form of key-value in gender.properties file.

genderOptions = {M:'Male', F:'Female'}

And while accessing it in the controller, you need to make following changes in order to let spring cast it in Map.

@Value("#{${genderOptions}}")
private Map<String, String> mapValues;

And if you need to get the value of a specific key in the Map, all you have to do is add the key's name in the expression:

@Value("#{${genderOptions}.M}")
private String maleKey;

edited Apr 06 '20 at 04:23

Anish B.

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answered Apr 05 '20 at 11:49

Reeta Wani

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>Its working. I'm getting the values from properties file after making changes as you suggested. But, I'm facing one more issue while displaying those options (read from propertied) in form. ' ' – mmathank Apr 05 '20 at 14:16
1

> Its working fine. after adding this.. I got the expected output. Thanks for your input. – mmathank Apr 05 '20 at 14:23

Spring MVC - Reading properties file using Java Configuration

1 Answers1