SpringBoot的国际化使用

时间:2022-11-25 01:04:44

在项目中,很多时候需要国际化的支持,这篇文章要介绍一下springboot项目中国际化的使用。

在这个项目中前端页面使用的thymeleaf,另外加入了nekohtml去掉html严格校验,如果不了解springboot和thymeleaf的使用,可以去看我的上一篇文章《SpringBoot集成Thymeleaf》

新建一个springboot项目,pom文件代码如下:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion> <groupId>com.dalaoyang</groupId>
<artifactId>springboot_internationalization</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging> <name>springboot_internationalization</name>
<description>springboot_internationalization</description> <parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties> <dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency> <dependency>
<groupId>net.sourceforge.nekohtml</groupId>
<artifactId>nekohtml</artifactId>
<version>1.9.15</version>
</dependency>
</dependencies> <build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build> </project>

从上面可以看出,其实和之前结合thymeleaf的时候一样。接下来给大家看一下application.propertie配置:

##端口号
server.port=8888 ##去除thymeleaf的html严格校验
spring.thymeleaf.mode=LEGACYHTML5 #设定thymeleaf文件路径 默认为src/main/resources/templates
spring.freemarker.template-loader-path=classpath:/templates

新建IndexController

@Controller
public class IndexController { @RequestMapping("/")
public String hello(Model model){
return "index";
}
}

到这里可以看出来,其实和整合thymeleaf一样。

接下来我们要加入国际化的关键,在resources里面新建messages.properties(默认配置),messages_en_US.properties(英文),messages_zh_CN.properties(中文)

其中messages.properties里面加入:

message = 欢迎使用国际化(默认)

messages_en_US.properties里面加入:

message = Welcome to internationalization (English)

messages_zh_CN.properties里面加入

message = \u6b22\u8fce\u4f7f\u7528\u56fd\u9645\u5316\uff08\u4e2d\u6587\uff09

然后在templates下新建index.html,代码如下:

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body> <a href="/?lang=en_US">English(US)</a>
<a href="/?lang=zh_CN">简体中文</a></br>
<p><label th:text="#{message}"></label></p> </body>
</html>

创建国际化配置文件,I18Config 代码如下:

package com.dalaoyang.config;

import java.util.Locale;

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.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import org.springframework.web.servlet.i18n.SessionLocaleResolver; @Configuration
@EnableAutoConfiguration
@ComponentScan
/**
* @author dalaoyang
* @Description
* @project springboot_learn
* @package com.dalaoyang.config
* @email 397600342@qq.com
* @date 2018/3/28
*/
public class I18Config extends WebMvcConfigurerAdapter{
@Bean
public LocaleResolver localeResolver() {
SessionLocaleResolver slr = new SessionLocaleResolver();
// 默认语言
slr.setDefaultLocale(Locale.US);
return slr;
} @Bean
public LocaleChangeInterceptor localeChangeInterceptor() {
LocaleChangeInterceptor lci = new LocaleChangeInterceptor();
// 参数名
lci.setParamName("lang");
return lci;
} @Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(localeChangeInterceptor());
}
}

最后修改IndexController,修改成如下:

package com.dalaoyang.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.Locale; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.ui.Model;
/**
* @author dalaoyang
* @Description
* @project springboot_learn
* @package com.dalaoyang.controller
* @email 397600342@qq.com
* @date 2018/3/28
*/
@Controller
public class IndexController { @Autowired
private MessageSource messageSource; @RequestMapping("/")
public String hello(Model model){
Locale locale = LocaleContextHolder.getLocale();
model.addAttribute("message", messageSource.getMessage("message", null, locale));
return "index";
}
}

现在启动项目,访问http://localhost:8888/

然后点击中文或者English就可以*切换语言了。