一、效果如下

二、SpringBoot 国际化配置

1、创建国际化配置文件（3个）

默认状态：login.properties

  

   

    

     

    
    

     

      login.btn=Sign in~
     
    
   

    

     

    
    

     

      login.username=Username~
     
    
   

    

     

    
    

     

      login.password=Password~
     
    
   

    

     

    
    

     

      login.tip=Please sign in~
     
    
   

    

     

    
    

     

      login.remember=Remember me~
     
    
  
 

显示中文：login_zh_CN.properties

  

   

    

     

    
    

     

      login.btn=登录
     
    
   

    

     

    
    

     

      login.username=用户名
     
    
   

    

     

    
    

     

      login.password=密码
     
    
   

    

     

    
    

     

      login.tip=请登录
     
    
   

    

     

    
    

     

      login.remember=记住我
     
    
  
 

显示英文：login_en_US.properties

  

   

    

     

    
    

     

      login.btn=Sign in
     
    
   

    

     

    
    

     

      login.username=Username
     
    
   

    

     

    
    

     

      login.password=Password
     
    
   

    

     

    
    

     

      login.tip=Please sign in
     
    
   

    

     

    
    

     

      login.remember=Remember me
     
    
  
 

SpringBoot默认国际化文件为：classpath:message.properties，如果放在其它文件夹中，则需要在application.properties配置属性

  

   

    

     

    
    

     

      #表示放在classpath的i18n文件夹，文件前缀为mess
     
    
   

    

     

    
    

     

      spring.messages.basename=i18n.login
     
    
  
 

2、自定义国际化语言解析器

  

   

    

     

    
    

     

      package com.atguigu.springboot.component;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      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;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      public class MyLocaleResolver implements LocaleResolver {
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 @Override
     
    
   

    

     

    
    

     
 public Locale resolveLocale(HttpServletRequest httpServletRequest) {
     
    
   

    

     

    
    

     
 //获取Http请求传过来的“l”参数
     
    
   

    

     

    
    

     

       String l = httpServletRequest.getParameter("l");
     
    
   

    

     

    
    

     

       Locale locale = Locale.getDefault();
     
    
   

    

     

    
    

     
 //如果l为空则用浏览器默认语言
     
    
   

    

     

    
    

     
 if (!StringUtils.isEmpty(l)) {
     
    
   

    

     

    
    

     

       String[] split = l.split("_");
     
    
   

    

     

    
    

     

       locale = new Locale(split[0],split[1]);
     
    
   

    

     

    
    

     

       }
     
    
   

    

     

    
    

     
 return locale;
     
    
   

    

     

    
    

     

       }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 @Override
     
    
   

    

     

    
    

     
 public void setLocale(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Locale locale) {
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       }
     
    
   

    

     

    
    

     

      }
     
    
  
 

3、把国际化语言解析器放到Spring容器中：

这里创建了一个自定义的配置类：MyMvcConfig，继承WebMvcConfigurerAdapter，可以扩展SpringMvc的功能，包括拦截器，转换器等

  

   

    

     

    
    

     

      package com.atguigu.springboot.config;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      import com.atguigu.springboot.component.MyLocaleResolver;
     
    
   

    

     

    
    

     

      import org.springframework.context.annotation.Bean;
     
    
   

    

     

    
    

     

      import org.springframework.context.annotation.Configuration;
     
    
   

    

     

    
    

     

      import org.springframework.web.servlet.LocaleResolver;
     
    
   

    

     

    
    

     

      import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
     
    
   

    

     

    
    

     

      import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      @Configuration
     
    
   

    

     

    
    

     

      public class MyMvcConfig extends WebMvcConfigurerAdapter {
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 @Bean  //将组件注册到容器中
     
    
   

    

     

    
    

     
 public LocaleResolver localeResolver() {
     
    
   

    

     

    
    

     
 return new MyLocaleResolver();
     
    
   

    

     

    
    

     

       }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      }
     
    
  
 

4、页面显示及切换国际化操作：

这里用到thymeleaf模板引擎，使用#{}获取我们之前配置的国际化文件里面的字段，如：th:text="#{login.username}"

  

   

    

     

    
    

     

      <!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>尚硅谷</title>
     
    
   

    

     

    
    

     
		<!-- Bootstrap core CSS -->
     
    
   

    

     

    
    

     
		<link href="asserts/css/bootstrap.min.css" th:href="@{/webjars/bootstrap/4.1.3/css/bootstrap.css}" rel="stylesheet">
     
    
   

    

     

    
    

     
		<!-- Custom styles for this template -->
     
    
   

    

     

    
    

     
		<link href="asserts/css/signin.css" th:href="@{/asserts/css/signin.css}" rel="stylesheet">
     
    
   

    

     

    
    

     
	</head>
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	<body class="text-center">
     
    
   

    

     

    
    

     
		<form class="form-signin" action="dashboard.html">
     
    
   

    

     

    
    

     
			<img class="mb-4" src="asserts/img/bootstrap-solid.svg" th:src="@{/asserts/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>
     
    
   

    

     

    
    

     
			<label class="sr-only" th:text="#{login.username}">Username</label>
     
    
   

    

     

    
    

     
			<input type="text" class="form-control" placeholder="Username" th:placeholder="#{login.username}" required="" autofocus="">
     
    
   

    

     

    
    

     
			<label class="sr-only" th:text="#{login.password}">Password</label>
     
    
   

    

     

    
    

     
			<input type="password" class="form-control" placeholder="Password" 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" th:text="#{login.btn}">Sign in</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>
     
    
  
 

特别注意：

①、要看一下是否配置了：spring.messages.basename

  

   

    

     

    
    

     

      #表示放在classpath的i18n文件夹，文件前缀为mess
     
    
   

    

     

    
    

     

      spring.messages.basename=i18n.login
     
    
  
 

②、国际化配置文件的名称是否写对？规则：fileName_语言代码（zh）_国家代码（CN）.properties

       如：login_zh_CN.properties

③、th:href="@{/index.html(l='zh_CN')中的“l”对应  String l = httpServletRequest.getParameter("l");

文章来源: blog.csdn.net，作者：轻狂书生FS，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/LookForDream_/article/details/85245086