springboot实现web国际化

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.1</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.peng</groupId>
    <artifactId>language</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>language</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf-spring5</artifactId>
        </dependency>
        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-java8time</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

//如果你想diy一些定制化的功能，只要写这个配置类，然后将它交给springboot，springboot就会帮我们自动装配
//扩展 MVC，需要实现 WebMvcConfigurer接口
@Configuration
//@EnableWebMvc 此注解标注此类将全面接管MVC，不能开启，否则mvc的自动配置全部失效
public class MyMvcConfig implements WebMvcConfigurer {
    //重写试图跳转
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        //首页跳转控制
        registry.addViewController("/").setViewName("index");
        registry.addViewController("/index.html").setViewName("index");
        //其他页面跳转
    }
    //ViewResolver实现了视图解析器的接口，我们就可以把它看作视图解析器
    @Bean
    public ViewResolver getViewResolver() {
        return new MyViewResolver();
    }

@Controller
public class IndexController {
    @RequestMapping("/index")
    private  String Index(){
        return "index";
    }
}

login.password=密码
login.tip=请登录
login.username=用户名
login.btn=登录
login.remember=记住我

login.password=password
login.tip=Please sign in
login.username=username
login.btn=sign in
login.remember=Remember me

login.password=密码
login.tip=请登录
login.username=用户名
login.btn=登录
login.remember=记住我

//国际化语言配置
public class MyLocaleResolver implements LocaleResolver {
    @Override
    public Locale resolveLocale(HttpServletRequest request) {
        String language = request.getParameter("language");
        Locale locale = Locale.getDefault();
        if (StringUtils.hasLength(language)){
            String[] split = language.split("_");
            locale = new Locale(split[0], split[1]);
        }
        return locale;
    }
    @Override
    public void setLocale(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Locale locale) {
    }
}

//国际化配置
@Bean
public LocaleResolver localeResolver() {
return new MyLocaleResolver();
}

#springboot多环境配置
server.port=8080
#关闭模板缓存
spring.thymeleaf.cache=false
#国际化
spring.messages.basename=i18n.login
#没这个不生效
#时间日期格式化
spring.mvc.format.date=yyyy-MM-dd

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
  <head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <meta name="description" content="">
  <meta name="author" content="">
  <title>Signin Template for Bootstrap</title>
  <!-- Bootstrap core CSS -->
  <link th:href="@{/css/bootstrap.min.css}" rel="stylesheet">
  <!-- Custom styles for this template -->
  <link th:href="@{/css/signin.css}" rel="stylesheet">
  </head>
  <body class="text-center">
  <form class="form-signin" action="dashboard.html">
    <img class="mb-4" th:src="@{/img/bootstrap-solid.svg}" alt="" width="72" height="72">
    <h1 class="h3 mb-3 font-weight-normal" th:text="#{login.tip}">Please sign in</h1>
    <input type="text" class="form-control" th:placeholder="#{login.username}" required="" autofocus="">
    <input type="password" class="form-control" th:placeholder="#{login.password}" required="">
    <div class="checkbox mb-3">
    <label>
          <input type="checkbox" value="remember-me">[[#{login.remember}]]
        </label>
    </div>
    <button class="btn btn-lg btn-primary btn-block" type="submit">[[#{login.sign}]]</button>
    <p class="mt-5 mb-3 text-muted">© 2017-2018</p>
    <a class="btn btn-sm" th:href="@{/index.html(l='zh_CN')}">中文</a>
    <a class="btn btn-sm" th:href="@{/index.html(l='en_US')}">English</a>
  </form>
  </body>
</html>