springboot validation 国际化

﹏ヽ暗。殇╰゛Y 2023-02-26 12:21 114阅读 0赞

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### springboot validation 国际化 ###

**应用：验证注解属性message根据locale显示不同的信息**

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**示例**

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**配置文件**

**application.yml**

spring:
      messages:
        basename: messages/validation

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**国际化文件**

![20200715183335812.png][]

**validation.properties**

product.message.price="商品价格不能低于0.01"

**validation.en\_US.properties**

product.message.price="price of product can not be less than 0.01"

**validation.zh\_CN.properties**

product.message.price="商品价格不能低于0.01"

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**pojo 层**

**Product**

@Data
    public class Product {
    
        @NotBlank(message = "商品id不能为空")
        private String productId;
    
        @NotBlank(message = "商品名称不能为空")
        private String productName;
    
        @DecimalMin(value = "0.01",message = "{product.message.price}")
        private Double price;
    }

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**config 层**

**WebConfig：配置验证器加载国际化属性文件**

@Configuration
    public class WebConfig {
    
        @Resource
        private MessageSource messageSource;
    
        @Bean
        public Validator initValidator(){
            LocalValidatorFactoryBean validatorFactoryBean=new LocalValidatorFactoryBean();
            validatorFactoryBean.setValidationMessageSource(messageSource);
    
            return validatorFactoryBean;
        }
    }

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**controller 层**

**HelloController**

@RestController
    public class HelloController {
    
        @RequestMapping("/hello")
        public String hello(@Validated Product product, BindingResult result){
            System.out.println(product);
    
            if (result.hasFieldErrors()){
                result.getFieldErrors().forEach(error -> {
                    System.out.print("field："+error.getField());
                    System.out.println(" ==> message："+error.getDefaultMessage());
                });
            }
    
            return "success";
        }
    }

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**使用测试**

**localhost:8080/hello?productId=1&productName=apple&price=0**

**默认输出**

2020-07-15 18:41:42.456  INFO 5484 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
    2020-07-15 18:41:42.460  INFO 5484 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 4 ms
    Product(productId=1, productName=apple, price=0.0)
    field：price ==> message："商品价格不能低于0.01"

**设置 header：Accept-Language en-US，控制台输出：**

Product(productId=1, productName=apple, price=0.0)
    field：price ==> message："price of product can not be less than 0.01"

**国际化属性文件设置成功**

[20200715183335812.png]: /images/20230209/2f5ce8cafd954056ae91d90621367b2c.png