javax.validation在Spring Boot请求中使用方式

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>`

import lombok.Data;

import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;

@Data
public class QueryVo {
    private String data;

    @NotEmpty(message = "Input can not be empty!")
    @NotNull(message = "Input can not be empty!")
    private String input;
}

    @ApiOperation(value = "查询")
    @RequestMapping(path = "/query", method = RequestMethod.POST)
    @ResponseBody
    public APIModel query(@Valid @RequestBody QueryVo query) throws Exception {
        return service.query(query);
    }

    @ExceptionHandler(value = BindException.class)
    public APIModel bindExceptionHandler(HttpServletRequest request, BindException e) {
        logger.error("Error found:", e);
        BindingResult bindingResult = e.getBindingResult();
        List<ObjectError> objectErrors = bindingResult.getAllErrors();
        ObjectError objectError = objectErrors.get(0);
        return APIModel.error(objectError.getDefaultMessage());
    }