SpringBoot后台国际化

新建国际化资源文件

在resources下面新建了三个文件

messages.properties是必须的，内容可以为空，但是必须有这个文件

messages_zh_CN.properties和messages_en_US.properties分别是中文和英文资源

配置国际化

如果是从请求头中获取Local Message

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.WebMvcConfigurer;
import org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver;

import javax.servlet.http.HttpServletRequest;
import java.util.Locale;

@Configuration
public class LocaleConfig extends AcceptHeaderLocaleResolver implements WebMvcConfigurer {

    @Override
    public Locale resolveLocale(HttpServletRequest request) {
        String headerLang = request.getHeader("language");
        return headerLang == null || headerLang.isEmpty()
                ? Locale.CHINESE
                : new Locale(headerLang);
    }
    @Bean
    public LocaleResolver localeResolver(){
        return new LocaleConfig();
    }
}

如果是从HTTP请求中参数Local Message

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.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import org.springframework.web.servlet.i18n.SessionLocaleResolver;

import java.util.Locale;

@Configuration
public class LocaleConfig {
    /**
     * 默认解析器 其中locale表示默认语言
     */
    @Bean
    public LocaleResolver localeResolver() {
        SessionLocaleResolver localeResolver = new SessionLocaleResolver();
        localeResolver.setDefaultLocale(Locale.CHINESE);
        return localeResolver;
    }

    /**
     * 默认拦截器 其中lang表示切换语言的参数名
     */
    @Bean
    public WebMvcConfigurer localeInterceptor() {
        return new WebMvcConfigurer() {
            @Override
            public void addInterceptors(InterceptorRegistry registry) {
                LocaleChangeInterceptor localeInterceptor = new LocaleChangeInterceptor();
                localeInterceptor.setParamName("lang");
                registry.addInterceptor(localeInterceptor);
            }
        };
    }
}

编写工具类获取Local Message

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.stereotype.Component;

@Component
public class MessageUtils {

    @Autowired
    private MessageSource messageSource;

    public String getLocale(String msgCode) {
        try {
            return messageSource.getMessage(msgCode, null, LocaleContextHolder.getLocale());
        } catch (Exception e) {
            return msgCode;
        }
    }
}

使用

在REST API中使用

@RestController
@RequestMapping("/TestController")
public class TestController {

	@Resource
	private MessageUtils messageUtils;

	@PostMapping("/test")
	public String test() {
		return messageUtils.getLocale("test");
	}
}

测试

如果出现中文乱码的情况

在Settings中将编码格式改成UTF-8

然后将乱码的文字重新编写一下就好了