SpringBoot 国际化配置项目实战（三）

springboot 项目中实战演练，功能有参数非空校验、默认国际化、正常返回参数国际化、抛异常后信息国际化、全局异常后继续切面拦截国际化、动态参数国际化等后端各个方面的实战。

1、新建springboot微服务，pom中jar的基本引用

		org.springframework.boot
		spring-boot-starter-parent
		1.5.14.RELEASE
		 
	

	
		UTF-8
		UTF-8
		1.8
	

	

		
			org.springframework.boot
			spring-boot-starter-aop
		

		
			org.springframework.boot
			spring-boot-starter-web
		
		
		
			org.springframework.boot
			spring-boot-starter-thymeleaf
		
		
			net.sourceforge.nekohtml
			nekohtml
		
		  
		    org.springframework.boot  
		    spring-boot-devtools  
		    true
		
		
		
			org.springframework.boot
			spring-boot-starter-test
			test
		
        
            org.projectlombok
            lombok
        
    

	
		
			
				org.springframework.boot
				spring-boot-maven-plugin
			
		
	

2、yml配置文件；

spring:
    thymeleaf:
        encoding=UTF-8
        content-type=text/html
        cache=false
        mode=LEGACYHTML5
    messages:
        encoding: UTF-8
        cache-seconds: 1
        basename: static/i18n/messages

3、properties的创建：

引入配置信息：比如英文版

demo.key.null= key not null !!!

1000=hello{0}, your verification code is: {1}

4、WebMvcConfigurationSupport 类中接口的重写：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.validation.Validator;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;



@Configuration
public class ValidatorConfiguration extends WebMvcConfigurationSupport {
    @Autowired
    private MessageSource messageSource;

    @Override
    public Validator getValidator() {
        return validator();
    }

    @Bean
    public Validator validator() {
        LocalValidatorFactoryBean validator = new LocalValidatorFactoryBean();
        validator.setValidationMessageSource(messageSource);
        return validator;
    }
}

5、全局异常的创建：

@Slf4j
@RestControllerAdvice
@Order(Ordered.HIGHEST_PRECEDENCE)
public class AppExceptionHandler {

    @Autowired
    MessageSource messageSource;

    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public Object methodArgumentNotValid(HttpServletRequest req, MethodArgumentNotValidException  ex)  {

       // Request r= new Request();源码所示
        //ResultBean result = ResultBean.FAIL;
        ResponseDTO result = new ResponseDTO();
        FieldError fe = ex.getBindingResult().getFieldError();
        String msg = fe.getDefaultMessage();
        Locale locale = LocaleContextHolder.getLocale();
       // LocaleContextHolder.setLocale(Locale.ENGLISH);
        LocaleContextHolder.setLocale(Locale.US);
        locale = LocaleContextHolder.getLocale();
        String message = messageSource.getMessage(fe, LocaleContextHolder.getLocale());
        //String message = messageSource.getMessage(fe, Locale.ENGLISH);
        log.info("---MethodArgumentNotValidException Handler--- ERROR: {}",msg);
        result.setResultMsg(msg);
     //   List errors =ex.getBindingResult().getAllErrors();
     //   StringBuffer errorMsg=new StringBuffer();
     //   errors.stream().forEach(x -> errorMsg.append(x.getDefaultMessage()).append(";"));
     //   log.error("---MethodArgumentNotValidException Handler--- ERROR: {}", errorMsg.toString());
    //    result.setResultMsg(errorMsg.toString());

        return result;
    }

    
    @ExceptionHandler(Exception.class)
    public ResponseDTO handleMgtInvalidParamException(Exception e, HttpServletRequest request) {
        ResponseDTO r = new ResponseDTO(ResponseCodeEnum.FAILED,null);
        return r;
    }
}

6、切面 接口 ResponseBodyAdvice