在使用 Thymeleaf 作为模板渲染器的 Spring Boot 项目中，如何根据用户语言环境将一段文本翻译成多种语言？
如何在百里香叶中显示这些消息？
例如，Spring Boot 2.0.2.RELEASE
文件WebConfig.java
// File /src/main/java/com/donhuvy/WebConfig.java
package com.donhuvy;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import org.springframework.web.servlet.i18n.SessionLocaleResolver;
import java.util.Locale;
/**
* Configuration for overall application.
*/
//@EnableWebMvc
@Configuration
@ComponentScan
@EnableAutoConfiguration
public class WebConfig extends WebMvcConfigurationSupport {
/**
* Switch language, default language is Vietnamese - Vy's mother tongue language.
* If user would like to switch to other language, use parameter,
* for example: http://localhost:8081/all?lang=en
*
* @return
*/
@Bean
public LocaleResolver localeResolver() {
SessionLocaleResolver sessionLocaleResolver = new SessionLocaleResolver();
// sessionLocaleResolver.setDefaultLocale(Locale.US);
Locale vietnamLocale = new Locale("vi", "VN");
sessionLocaleResolver.setDefaultLocale(vietnamLocale);
return sessionLocaleResolver;
}
@Bean
public LocaleChangeInterceptor localeChangeInterceptor() {
LocaleChangeInterceptor lci = new LocaleChangeInterceptor();
lci.setParamName("lang");
return lci;
}
@Override
public void addInterceptors(InterceptorRegistry ir) {
ir.addInterceptor(localeChangeInterceptor());
}
}
需要 3 个文件*.properties
文件messages.properties
cash.list.currency_code=Currency code
cash.list.description=Description
cash.list.order_number=No.
cash.receipt.object.name=Object name
cash.list.conversion_rate=Conversion rate
文件messages_en.properties
cash.list.currency_code=Currency code
cash.list.description=Description
cash.list.order_number=No.
cash.receipt.object.name=Object name
cash.list.conversion_rate=Conversion rate
文件messages_vi.properties
cash.list.currency_code=Mã tiền tệ
cash.list.description=Mô tả
cash.list.order_number=STT
cash.receipt.object.name=Đối tượng
cash.list.conversion_rate=Tỷ giá
视图文件ccy.html
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
<!-- File: /src/main/resources/templates/cash/ccy.html -->
<!--<th:block th:include="fragments/header :: header"></th:block>-->
<!--For suggest css class purpose-->
<!--<link rel="stylesheet" href="../../static/bootstrap.min.css">-->
<th:block th:include="fragments/header"></th:block>
<div class="row">
<div class="col-lg-12 col-md-12">
<table class="table table-bordered table-striped">
<thead class="thead-light">
<tr>
<th><span th:text="#{cash.list.order_number}"></span></th>
<th><span th:text="#{cash.list.currency_code}"/></th>
<th><span th:text="#{cash.list.description}"></span></th>
<th><span th:text="#{cash.list.conversion_rate}"/></th>
</tr>
</thead>
<tbody>
<tr th:each="currency : ${currencies}">
<!--/*@thymesVar id="currency" type="com.donhuvy.entity.Ccy"*/-->
<td><span th:text="${currency.currencyId}"/></td>
<td><span th:text="${currency.currencyName}"/></td>
<td><span th:text="${currency.ccyName}"/><td>
<span th:text="${currency.convertRate}"/></td>
</tr>
</tbody>
</table>
</div>
</div>
<!--<th:block th:include="fragments/footer :: footer"></th:block>-->
<th:block th:include="fragments/footer"></th:block>
查看特定语言的结果：
http://localhost:8081/all(默认语言(
http://localhost:8081/all?lang=en
http://localhost:8081/all?lang=vi
参考： https://www.thymeleaf.org/doc/tutorials/2.1/usingthymeleaf.html#using-thtext-and-externalizing-text