springboot 国际化集成

第一步加仓资源MessageSource ，启动类中加上如下代码：

public WebsiteApplication(MessageSource messageSource) {
    MsgUtil.inti(messageSource);
}
第二步配置拦截器信息

package com.test.config;

import com.test.interceptor.LoginInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.context.support.ResourceBundleMessageSource;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.i18n.CookieLocaleResolver;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;

import java.util.Locale;

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {



    @Bean
    public LoginInterceptor loginInterceptor(){
        return new LoginInterceptor();
    }


    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginInterceptor()).addPathPatterns("/**");
    }
    /**
     * 这个如果不存在，则会抛异常: nested exception is java.lang.UnsupportedOperationException: Cannot change HTTP accept header - use a different locale resolution strategy
     *
     * @return
     */
    @Bean
    public LocaleResolver localeResolver() {
        // 也可以换成 SessionLocalResolver, 区别在于国际化的应用范围
        CookieLocaleResolver localeResolver = new CookieLocaleResolver();
        localeResolver.setDefaultLocale(Locale.SIMPLIFIED_CHINESE);
        return localeResolver;
    }

    /**
     * 根据请求参数，来设置本地化
     *
     * @return
     */
    @Bean
    public LocaleChangeInterceptor localeChangeInterceptor() {
        LocaleChangeInterceptor localeChangeInterceptor = new LocaleChangeInterceptor();
        // Defaults to "locale" if not set
        localeChangeInterceptor.setParamName("language");
        return localeChangeInterceptor;
    }
第三步:简单的封装工具

package com.test.utils;

import org.springframework.context.MessageSource;
import org.springframework.context.i18n.LocaleContextHolder;

public class MsgUtil {
    private static MessageSource messageSource;

    public static void inti(MessageSource messageSource) {
        MsgUtil.messageSource = messageSource;
    }

    /**
     * 获取单个国际化翻译值
     */
    public static String get(String msgKey) {
        try {
            return messageSource.getMessage(msgKey, null, LocaleContextHolder.getLocale());
        } catch (Exception e) {
            return msgKey;
        }
    }
}
第四步：resources下面建立文件夹i18n/messages

对应的信息如简体中文messages_zh_CN.properties ，根据自己的需求添加

name=用户名

对应的信息如简体英文messages_en_US.properties

name=user name

第五步springboot配置文件中加上即可

spring.messages.basename=i18n/messages/messages
spring.messages.encoding=UTF-8
spring.messages.fallbackToSystemLocale=false

第六步测试即可

@GetMapping(path = "test")
public ResultBean testLocal(String language) {
    String[] s = language.split("_");
    LocaleContextHolder.setLocale(new Locale(s[0], s[1]));
    System.out.println(MsgUtil.get("name"));
    return ResultBean.ok();
}

}