spring - 为什么消息属性在 Spring MVC 中返回 Null

Question

我正在从事一个我想将消息外部化的项目。属性文件。使运营团队可以根据需要进行变更。

为此我写了一个这样的配置类

@Configuration
@ComponentScan(basePackages = {"lk.ideahub.symphony.modules", "lk.ideahub.symphony.product"})
@PropertySources(value = {@PropertySource(value = {"classpath:messages.properties"})})
public class MessageConfig {
    private static final Logger log = LoggerFactory.getLogger(MessageConfig.class);

    @Bean
    public MessageSource messageSource() {
        log.info("Message properties loading into the project");
        ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
        messageSource.setBasename("classpath:messages");
        messageSource.setCacheSeconds(10);
        messageSource.setDefaultEncoding("UTF-8");
        return messageSource;
    }
}

在消息属性中

axipay.failure.account.already.exist=Sorry, the biller account number is already added.

在我的课上

public Payee myPayees{

//Asking the property into a variable 
private static final String PAYEE_ACCOUNT_ALREADY_EXIST = "axipay.failure.account.already.exist";

@Autowired
Environment environment;

public void myMethod(){
 String message = getEnvironment().getProperty(PAYEE_ACCOUNT_ALREADY_EXIST);
}
}

标签： springspring-mvcpropertiesstring-externalization

Answer 1

你可以使用spring https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/context/MessageSource.html提供的MessageSource Bean

@Autowired
private MessageSource messageSource;
//use this method to get message
public String getMessage(){        
return messageSource.getMessage("axipay.failure.account.already.exist", null, new Locale("en"));
}