i118n国际化

package com.touchsmail.common.conf;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.support.ResourceBundleMessageSource;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver;

import java.util.Locale;

@Configuration
public class LocaleConfig {

    @Bean
    public ResourceBundleMessageSource messageSource() {
//        Locale.setDefault(Locale.CHINA);
        ResourceBundleMessageSource source = new ResourceBundleMessageSource();
        //设置国际化文件存储路径和名称    i18n目录，messages文件名
        source.setBasenames("i18n/messages");
        //设置根据key如果没有获取到对应的文本信息,则返回key作为信息
        source.setUseCodeAsDefaultMessage(true);
        //设置字符编码
        source.setDefaultEncoding("UTF-8");
        return source;
    }

    @Bean
    public LocaleResolver localeResolver() {
        AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver();
        localeResolver.setDefaultLocale(Locale.CHINA); // 设置默认的Locale,英文Locale.US
        return localeResolver;
    }

}

package com.touchsmail.common.utils;

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

import java.util.Locale;

@Component
public class I18nUtils {

    /**
     * 使用懒加载方式实例化messageSource国际化工具
     */
    private static class Lazy {
        private static final MessageSource messageSource = SpringUtil2.getBean(MessageSource.class);
    }

    private static MessageSource getInstance() {
        return Lazy.messageSource;
    }

    /**
     * 获取国际化消息
     *
     * @param code 消息键
     * @return 国际化消息
     */
    public static String getMessage(String code) {
        Locale locale = LocaleContextHolder.getLocale();
        return getInstance().getMessage(code, null, locale);
    }

    /**
     * 获取带参数的国际化消息
     *
     * @param code 消息键
     * @param args 参数
     * @return 国际化消息
     */
    public static String getMessage(String code, Object... args) {
        Locale locale = LocaleContextHolder.getLocale();
        return getInstance().getMessage(code, args, locale);
    }
}

package com.touchsmail.common.utils;

import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import lombok.NonNull;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class SpringUtil2 implements ApplicationContextAware {
    private static ApplicationContext applicationContext = null;

    @Override
    public void setApplicationContext(@NonNull ApplicationContext applicationContext) throws BeansException {
        if (SpringUtil2.applicationContext == null) {
            SpringUtil2.applicationContext = applicationContext;
        }
    }

    /**
     * 通过class获取Bean.
     */
    public static <T> T getBean(Class<T> clazz) {
        return applicationContext.getBean(clazz);
    }
}