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SpringBoot的国际化使用


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就可以自由切换语言了。





标签: SPRINGBOOT