实现界面中英文切换

定义两种语言：en_US 和 zh_CN，目录结构如下：

在前端页面的按钮添加两个带有参数的href：

中文
English

核心需要去重写LocaleResolver

package com.wuchu.employee.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.LocaleResolver;
import org.thymeleaf.util.StringUtils;

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


@Configuration
public class MyLocaleResolve implements LocaleResolver {

    @Override
    public Locale resolveLocale(HttpServletRequest request) {
        //获取切换语言按钮发送的请求中的参数
        String language = request.getParameter("language");
        Locale locale = Locale.getDefault();//如果没有就用默认
        //如果请求链接带有请求参数
        if(!StringUtils.isEmpty(language)){
            String[] split = language.split("_");
            locale = new Locale(split[0],split[1]);
        }
        return locale;
    }

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

    }
}

然后需要去返回你自己定义的 MyLocaleResolve

package com.wuchu.employee.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 MyMvcConfig implements WebMvcConfigurer {
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("index");
        registry.addViewController("/index.html").setViewName("index");
    }

//    自定义国际化组件
    @Bean
    public LocaleResolver localeResolver(){
        return new MyLocaleResolve();
    }
}