1.创建springboot项目，并配置application.properties文件
spring.messages.basename=messages
spring.messages.encoding=UTF-8
spring.messages.fallback-to-system-locale=false
spring.thymeleaf.cache=false
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html
spring.thymeleaf.mode=HTML
spring.thymeleaf.encoding=UTF-82.resources路径下新建messages.properties文件
messages.properties、messages_zh_CN.properties文件
3.新建config类并实现WebMvcConfigurer类，设置默认语言为英语
@Configuration
public class I18nConfig implements WebMvcConfigurer {
@Bean
public LocaleResolver localeResolver() {
SessionLocaleResolver resolver = new SessionLocaleResolver();
resolver.setDefaultLocale(Locale.ENGLISH);
return resolver;
}
}4.编写controller类接收请求
package com.test;
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.GetMapping;
/**
* @Description TODO
* @Date 2025/5/29 18:09
* @Version 1.0
*/
@Controller
public class HomeController {
private final MessageSource messageSource;
@Autowired
public HomeController(MessageSource messageSource) {
this.messageSource = messageSource;
}
@GetMapping("/")
public String home(Model model) {
String message= messageSource.getMessage(
"message",
null,
LocaleContextHolder.getLocale()
);
model.addAttribute("message", message);
return "home";
}
}
5.在resources下新建templates目录并添加home.html文件
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title th:text="#{login.title}">Login</title>
</head>
<body>
<h1 th:text="${message}">Welcome</h1>
<p th:text="#{user.greeting('LiLi')}">Hello, User</p>
<div>
<a href="?lang=en">English</a> |
<a href="?lang=zh-CN">中文</a> |
</div>
</body>
</html>