Spring boot自定义国际化不生效

今天在学自定义国际化的时候，代码始终不生效，最后发现自己名称写的不一致o(╥﹏╥)o

一个地方写的cn，一个地方写的en，服了自己了

除此之外，还了解到个可能不生效的原因

在WebMvcAutoConfiguration里边自动配置的localeResolver
1、默认是加载系统的
2、自己定义了localeResolver加载自己定义的
源码：

@Bean
@ConditionalOnMissingBean
@ConditionalOnProperty(prefix = "spring.mvc", name = "locale")
public LocaleResolver localeResolver() {
	if (this.mvcProperties.getLocaleResolver() == WebMvcProperties.LocaleResolver.FIXED) {
		return new FixedLocaleResolver(this.mvcProperties.getLocale());
	}
	AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver();
	localeResolver.setDefaultLocale(this.mvcProperties.getLocale());
	return localeResolver;
}

所以当我们写自己写的LocaleResolver不生效的原因只能是@bean没有注册成功

1. 了解到方法名必须是localeResolver()

   @Configuration
   public class MyMvcConfig implements WebMvcConfigurer{
       @Bean
       public LocaleResolver localeResolver() {
           return new MyLocaleResolver();
       }
   }
   

2. 或者bean里面必须是localeResolver

   @Configuration
   	public class MyMvcConfig implements WebMvcConfigurer{
   	    @Bean("localeResolver")
   	    public LocaleResolver locale() {
   	        return new MyLocaleResolver();
   	    }
   	}
   

原因好像是源码里面固定的，具体是参考别的大佬的解释的

详情见：https://www.cnblogs.com/ql123456/p/12173219.html

在《Spring Boot 2 Recipes: A Problem-Solution Approach》书中提到这样一句话：

You can also define a locale resolver by registering a bean of type LocaleResolver in the web application context.
You must set the bean name of the locale resolver to localeResolver so it can be autodetected

上述英语意思为：在自定义localeResolver时方法名必须一致

注意：
写的时候一定要小心，别写错

本文地址：https://blog.csdn.net/weixin_44635198/article/details/107581138