一、自动根据请求头获取相关国际化页面
1、原理
public class MessageSourceAutoConfiguration {
@Bean
@ConfigurationProperties(prefix = "spring.messages")
public MessageSourceProperties messageSourceProperties() {
return new MessageSourceProperties(){
private String basename = "messages";
...
};
}
@Bean
public MessageSource messageSource(MessageSourceProperties properties) {
ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
if (StringUtils.hasText(properties.getBasename())) {
messageSource.setBasenames(StringUtils.commaDelimitedListToStringArray(StringUtils.trimAllWhitespace(properties.getBasename())));
}
if (properties.getEncoding() != null) {
messageSource.setDefaultEncoding(properties.getEncoding().name());
}
messageSource.setFallbackToSystemLocale(properties.isFallbackToSystemLocale());
Duration cacheDuration = properties.getCacheDuration();
if (cacheDuration != null) {
messageSource.setCacheMillis(cacheDuration.toMillis());
}
messageSource.setAlwaysUseMessageFormat(properties.isAlwaysUseMessageFormat());
messageSource.setUseCodeAsDefaultMessage(properties.isUseCodeAsDefaultMessage());
return messageSource;
}
2、导入thymeleaf的pom文件
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
3、login.html页面
<!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 href="asserts/css/bootstrap.min.css"-->
<link th:href="@{asserts/css/bootstrap.min.css}" rel="stylesheet">
<!-- Custom styles for this template -->
<link th:href="@{asserts/css/signin.css}" rel="stylesheet">
</head>
<body class="text-center">
<form class="form-signin" th:action="@{/login}" method="post">
<img class="mb-4" th:src="@{asserts/img/bootstrap-solid.svg}" alt="" width="72" height="72">
<h1 class="h3 mb-3 font-weight-normal" th:text="#{login.loginMessage}">Please sign in</h1>
<p style="color: red" th:text="${mes}" th:if="${not #strings.isEmpty(mes)}"></p>
<label class="sr-only" th:text="#{login.Username}">Username</label>
<input type="text" name="username" class="form-control" placeholder="Username" th:placeholder="#{login.Username}" required="" autofocus="">
<label class="sr-only" th:text="#{login.Password}">Password</label>
<input type="password" name="password" class="form-control" th:placeholder="#{login.Password}" placeholder="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" th:text="#{login.Signin}">Sign in</button>
<p class="mt-5 mb-3 text-muted">© 2017-2018</p>
<a class="btn btn-sm" th:href="@{/index.html(l='ch_CN')}">中文</a>
<a class="btn btn-sm" th:href="@{/index.html(l='en_US')}">English</a>
</form>
</body>
</html>
4、配置国际化信息
5、application.properties配置
spring.thymeleaf.cache=false //禁用thymeleaf缓存，然后在html页面按住ctrl+F9就可以实时刷新页面数据
spring.messages.basename=i18n.login//使用templates目录下的login.properties文件中获取国际化信息
二、根据用户点击选择语言
1、原理
public class WebMvcAutoConfiguration {
@Bean
@ConditionalOnMissingBean
@ConditionalOnProperty(prefix = "spring.mvc", name = "locale")
public LocaleResolver localeResolver() {
if (this.mvcProperties.getLocaleResolver() == WebMvcProperties.LocaleResolver.FIXED) {
return new FixedLocaleResolver(this.mvcProperties.getLocale());
}
AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver();
localeResolver.setDefaultLocale(this.mvcProperties.getLocale());
return localeResolver;
}
2、编写主配置类
@Configuration
public class MainConfiguration implements WebMvcConfigurer {
@Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("login");
registry.addViewController("/index.html").setViewName("login");
registry.addViewController("/main.html").setViewName("dashboard");
}
@Bean
public LocaleResolver localeResolver() {
return new MyLocalResolver();
}
}
3、编写controller
@Controller
public class loginController {
@RequestMapping("/login")
public String login(@RequestParam("username") String username ,String password,
HttpSession session, HttpServletRequest request, Map map){
if (null != username && "123456".equals(password) ){
session.setAttribute("username",username);
return "redirect:/main.html";
}else
map.put("mes","账号或者密码错误！~~");
return "login";
}
}
4、编写切换的区域信息的的LocaleResolve
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.LocaleResolver;
import java.util.Locale;
public class MyLocalResolver implements LocaleResolver {
@Override
public Locale resolveLocale(HttpServletRequest request) {
String language = request.getParameter("l");
Locale locale = Locale.getDefault();
if (!StringUtils.isEmpty(language)){
String[] split = language.split("_");
locale = new Locale(split[0],split[1]);
}
return locale;
}
@Override
public void setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale) {
}
}