我们可以将Springboot结合thymeleaf进行国际化。
首先，我们新建项目，项目结构如下：
第一步，我们在pom.xml文件中引入thymeleaf jar包
pom.xml
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.zk.myspringboot_012</groupId>
<artifactId>myspringboot_012</artifactId>
<packaging>jar</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>myspringboot_012 Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<!-- 继承父包 -->
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>3.3.1-1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
</dependencies>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.3.RELEASE</version>
</parent>
<build>
<finalName>myspringboot_012</finalName>
</build>
</project>
第二步，我们配置属性文件application.properties、message_en_US.properties、message_zh_CN.properties、message.properties
application.properties
spring.resources.static-locations=classpath:/META-INF/resources/,classpath:/resources/,classpath:/static/,classpath:/public/,classpath:/templates/ spring.messages.basename=message
message_en_US.properties
username=username password=123456
message_zh_CN.properties
username=用户名 password=123456
message.properties
username=用户名 password=123456
第三步，我们创建index.html文件，主界面文件
index.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8"></meta>
<title>Index首页</title>
</head>
<body>
点击切换语言：
<a href="?lang=zh_CN">简体中文</a>
<a href="?lang=en_US">English(US)</a><br/>
<p>
<h2 th:text="#{username}"></h2>
<h2 th:text="#{password}"></h2>
</p>
</body>
</html>
第四步，我们编写控制器IndexController.java
IndexController.java
package com.zk.myspringboot;
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.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
@Controller
public class IndexController {
@Autowired
private MessageSource messageSource;
@RequestMapping("/demo")
public String index(Model model) {
Locale locale1 = LocaleContextHolder.getLocale();
model.addAttribute("username", messageSource.getMessage("username", null, locale1));
model.addAttribute("password", messageSource.getMessage("password", null, locale1));
return "index";
}
}
第五步，配置使其可以当请求参数中携带语言参数时自动切换语言，编写自定义的MyLocaleResolver.java
MyLocaleResolver.java
package com.zk.myspringboot;
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;
/**
* SpringBoot默认的Locale解析器是根据请求头的区域信息进行解析的（浏览器语言）
* 使用自定义的Locale解析器对url的区域信息进行解析达到点击切换区域效果
* 一旦我们自定义的区域解析器注册到Spring容器中，则SpringBoot提供的将不自动注册
*/
public class MyLocaleResolver implements LocaleResolver {
@Override
public Locale resolveLocale(HttpServletRequest httpServletRequest) {
String l = httpServletRequest.getParameter("l");
if(!StringUtils.isEmpty((l))){
String [] s = l.split("_");
return new Locale(s[0],s[1]);
}
return Locale.getDefault();
}
@Override
public void setLocale(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Locale locale) {
}
}
第六步，把配置加入SpringBoot容器中，新建WebConfiguration.java
WebConfiguration.java
package com.zk.myspringboot;
import java.util.List;
import java.util.Locale;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.format.FormatterRegistry;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.validation.MessageCodesResolver;
import org.springframework.validation.Validator;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.HandlerMethodReturnValueHandler;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.config.annotation.AsyncSupportConfigurer;
import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.PathMatchConfigurer;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.i18n.CookieLocaleResolver;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
@Configuration
public class WebConfiguration implements WebMvcConfigurer {
@Override
public void addViewControllers(ViewControllerRegistry registry) {
//设置对“/”的请求映射到index
//如果没有数据返回到页面，没有必要用控制器方法对请求进行映射
registry.addViewController("/").setViewName("index");
}
//注册我们自定义的区域解析器，一旦将我们的区域解析器注册到Spring容器中则SpingBoot
//默认提供的区域解析器将不会自动注册
@Bean
public LocaleResolver localeResolver(){
CookieLocaleResolver localeResolver = new CookieLocaleResolver();
localeResolver.setCookieName("localeCookie");
//设置默认区域
localeResolver.setDefaultLocale(Locale.ENGLISH);
localeResolver.setCookieMaxAge(3600);//设置cookie有效期.
return localeResolver;
}
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
// TODO Auto-generated method stub
}
@Override
public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
// TODO Auto-generated method stub
}
@Override
public void configureAsyncSupport(AsyncSupportConfigurer configurer) {
// TODO Auto-generated method stub
}
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
// TODO Auto-generated method stub
}
@Override
public void addFormatters(FormatterRegistry registry) {
// TODO Auto-generated method stub
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
// TODO Auto-generated method stub
registry.addInterceptor(localeChangeInterceptor());
}
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
// TODO Auto-generated method stub
}
@Bean
public LocaleChangeInterceptor localeChangeInterceptor() {
LocaleChangeInterceptor lci = new LocaleChangeInterceptor();
// 参数名
lci.setParamName("lang");
return lci;
}
@Override
public void addCorsMappings(CorsRegistry registry) {
// TODO Auto-generated method stub
}
@Override
public void configureViewResolvers(ViewResolverRegistry registry) {
// TODO Auto-generated method stub
}
@Override
public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
// TODO Auto-generated method stub
}
@Override
public void addReturnValueHandlers(List<HandlerMethodReturnValueHandler> returnValueHandlers) {
// TODO Auto-generated method stub
}
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
// TODO Auto-generated method stub
}
@Override
public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
// TODO Auto-generated method stub
}
@Override
public void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers) {
// TODO Auto-generated method stub
}
@Override
public void extendHandlerExceptionResolvers(List<HandlerExceptionResolver> exceptionResolvers) {
// TODO Auto-generated method stub
}
@Override
public Validator getValidator() {
// TODO Auto-generated method stub
return null;
}
@Override
public MessageCodesResolver getMessageCodesResolver() {
// TODO Auto-generated method stub
return null;
}
}
最后设置启动类，DemoApplication.java
DemoApplication.java
package com.zk.myspringboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
测试结果如下：
