springboot validation 检验模式

springboot validation 检验模式

默认：对pojo的所有参数进行检验，如果检验出错，返回所有错误

fail-fast：检验到参数出错就返回当前错误，不需要检验所有的参数

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示例

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pojo 层

Order

@Data
public class Order {

    @FutureOrPresent(message = "时间不能为过去时间")
    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime orderTime;

    @DecimalMin(value = "0.01",message = "最小值为0.01")
    private Double price;

    @Min(value = 1,message = "最小值为1")
    private Integer amount;
}

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config 层

WebConfig

@Configuration
public class WebConfig {

    @Bean
    public Validator initValidator(){
        return Validation.byProvider(HibernateValidator.class)
                .configure().failFast(true)
                .buildValidatorFactory()
                .getValidator();
    }
}

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controller 层

HelloController

@RestController
public class HelloController {

    @RequestMapping("/hello")
    public String hello(@Validated Order order,BindingResult result){
        System.out.println(order);

        if (result.hasFieldErrors()){
            result.getFieldErrors().forEach(error -> {
                System.out.print("field："+error.getField());
                System.out.println(" ==> defaultMessage："+error.getDefaultMessage());
            });
        }

        return "success";
    }
}

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使用测试：localhost:8080/hello?orderTime=2020-01-02 09:00:08&price=2&amount=0

默认检验输出

2020-07-14 09:55:14.749  INFO 14772 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2020-07-14 09:55:14.757  INFO 14772 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 8 ms
Order(orderTime=2020-01-02T09:00:08, price=2.0, amount=0)
field：orderTime ==> defaultMessage：时间不能为过去时间
field：amount ==> defaultMessage：最小值为1

默认检验所有参数，将所有错误一起输出

fail-fast输出

2020-07-14 09:48:31.746  INFO 9408 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2020-07-14 09:48:31.761  INFO 9408 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 15 ms
Order(orderTime=2020-01-02T09:00:08, price=2.0, amount=0)
field：amount ==> defaultMessage：最小值为1

fail-fast检验出错，就将错误输出，立即返回