版权声明：看什么?6,你和我,走一波! https://blog.csdn.net/qq_31323797/article/details/84650259
1 通过浏览器切换语言
将页面上需要语言转换的信息进行抽取
配置文件默认格式properties
1.1 目录结构
1.2 配置文件
1.2.1 login.properties
login.btn=登陆(默认)
login.password=密码(默认)
login.remember=记住我(默认)
login.tip=请登陆(默认)
login.username=用户名(默认)
1.2.2 login_zh_CN.properties
login.btn=登陆
login.password=密码
login.remember=记住我
login.tip=请登陆
login.username=用户名
1.2.3 login_en_US.properties
login.btn=Sign In
login.password=Password
login.remember=Remember Me
login.tip=Please sign in
login.username=UserName
1.2.4 application.properties
spring.messages.basename=internationalization.login
1.2.5 配置文件原理
详见MessageSourceAutoConfiguration
1.3 改造页面
<!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 -->
<link href="asserts/css/bootstrap.min.css" th:href="@{/webjars/bootstrap/4.0.0/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" th:action="@{/user/login}" method="post">
<img class="mb-4" th:src="@{/asserts/img/bootstrap-solid.svg}" 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>
<!--判断-->
<p style="color: red" th:text="${msg}" th:if="${not #strings.isEmpty(msg)}"></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" 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>
1.4 测试中文显示
1.4.1 切换浏览器语言为中文
1.4.2 打开页面,显示中文
1.5 测试英文显示
1.4.1 切换浏览器语言为英文
1.4.2 打开页面,显示英文
- 效果：根据浏览器语言设置的信息切换页面语言
1.5 切换原理
国际化Locale（区域信息对象）；LocaleResolver（获取区域信息对象）；
@Bean
@ConditionalOnMissingBean
@ConditionalOnProperty(
prefix = "spring.mvc",
name = {"locale"}
)
public LocaleResolver localeResolver() {
// 如果自定义区域信息,就是用自定义
if (this.mvcProperties.getLocaleResolver() == org.springframework.boot.autoconfigure.web.servlet.WebMvcProperties.LocaleResolver.FIXED) {
return new FixedLocaleResolver(this.mvcProperties.getLocale());
} else {
// 否则使用AcceptHeader(请求头)中的区域信息
AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver();
localeResolver.setDefaultLocale(this.mvcProperties.getLocale());
return localeResolver;
}
}
- 默认的就是根据请求头带来的区域信息获取Locale进行国际化
2 通过页面点击切换语言
2.1 自定义区域信息解析器
package com.gp6.springboot18.config;
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;
/**
* 将区域信息放到请求中
*/
public class MyLocaleResolver implements LocaleResolver {
@Override
public Locale resolveLocale(HttpServletRequest request) {
String l = request.getParameter("l");
Locale locale = Locale.getDefault();
if(!StringUtils.isEmpty(l)){
String[] split = l.split("_");
locale = new Locale(split[0],split[1]);
}
return locale;
}
@Override
public void setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale) {
}
}
2.2 将自定义的解析器注入到容器中
2.2.1 MyConfig
@Bean
public LocaleResolver localeResolver(){
return new MyLocaleResolver();
}