springboot2 国际化 (i18n) 配置

1. 结构

1.1 application 配置

application.properties

# spring Internationalized Page Value i18n
spring.messages.basename=i18n.login, i18n.language

1.2 添加 i18n

resources 下添加 i18n 文件夹, 在 i18n 添加 language.properties 文件, 之后自动出现 Resource Bundle ‘language’, 按照下面的操作就可以添加语言

写入语言内容

1.3 前端接受 i18n 写入的值

以密码为例

<span class="input-group-text" th:text="#{login.input_password}">span>
<input type="password" id="iAdministratorP" name="iAdministratorP" class="form-control" th:placeholder="#{login.input_pre}" />

1.4 查看检验

以 火狐 为例, 每次选中浏览器语言, 刷新网络, 会显示浏览器默认语言

原理

2. i18n 链接显示

2.1 前端

<div id="languageType">
	<a class="btn btn-info btn-sm" th:href="@{/index.html(l=zh_CN)}" th:text="#{language.cn}">a>
	<a class="btn btn-info btn-sm" th:href="@{/index.html(l=en_US)}" th:text="#{language.us}">a>
div>

2.1 LocaleResolver 配置

LanguageLocaleResolverConfig

package com.ykenan.ykenan.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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;

/**
 * LanguageLocaleResolverConfig
 */
public class LanguageLocaleResolverConfig implements LocaleResolver {

    private static final Logger logger = LoggerFactory.getLogger(LanguageLocaleResolverConfig.class);

    private static final String PATH_PARAMETER = "l";

    private static final String PATH_PARAMETER_SPLIT = "_";

    /**
     * i18n
     * @param httpServletRequest httpServletRequest
     * @return locale
     */
    @Override
    public Locale resolveLocale(HttpServletRequest httpServletRequest) {
        String l = httpServletRequest.getParameter(PATH_PARAMETER);
        /* Language to get the request header. */
        Locale locale = httpServletRequest.getLocale();
        logger.info("Add default.");
        if (!StringUtils.isEmpty(l)) {
            String[] split = l.split(PATH_PARAMETER_SPLIT);
            locale = new Locale(split[0], split[1]);
            logger.info("Add custom.");
        }
        return locale;
    }

    @Override
    public void setLocale(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Locale locale) {

    }

}

将上面的配置添加到容器中

package com.ykenan.ykenan.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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.WebMvcConfigurer;

/**
 * Configuration: set Configuration
 */
@Configuration
public class ViewControllerConfig implements WebMvcConfigurer {

    private static final Logger logger = LoggerFactory.getLogger(ViewControllerConfig.class);

    /**
     * Register components into containers
     * @return new WebMvcConfigurerConfig()
     */
    @Bean
    public WebMvcConfigurer webMvcConfigurer() {
        logger.info("WebMvcConfigurer success");
        return new WebMvcConfigurerConfig();
    }

    /**
     * Register components into containers
     * @return new LanguageLocaleResolverConfig()
     */
    @Bean
    public LocaleResolver localeResolver() {
        logger.info("LocaleResolver success");
        return new LanguageLocaleResolverConfig();
    }

}

3. 浏览器