1、首先设置号idea的字符格式

2、在resources下创建login.properties、login_zh_CN.properties、login_en_US.properties

3、静态资源设置

		

			
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4、application.yaml配置路径

spring:
  messages:
    basename: i18n.login

5、处理的组件类！
MyLocaleResolver

package com.wu.config;

import org.springframework.util.StringUtils;
import org.springframework.web.servlet.LocaleResolver;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Locale;

public class MyLocaleResolver implements LocaleResolver {
    @Override
    public Locale resolveLocale(HttpServletRequest request) {
        //获取请求参数
        String lang= request.getParameter("lang");

        Locale locale = Locale.getDefault();//如果没用就使用默认的

        if(!StringUtils.isEmpty(lang))
        {
            String[] sp = lang.split("_");
            locale=new Locale(sp[0],sp[1]);
        }
        return locale;
    }

    @Override
    public void setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale) {

    }
}

6、最后在自己的配置文件中注册

package com.wu.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class MvcConfig implements WebMvcConfigurer {
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("index");
        registry.addViewController("/index.html").setViewName("index");
    }
    @Bean
    public LocaleResolver localeResolver()
    {
        return  new MyLocaleResolver();
    }
}