swagger-ui中测试接口（enum传值） 报400错误

swagger-ui中测试接口（enum传值） 报400错误

PriceRuleController:

    @PostMapping("/update")
    @ApiOperation(value = "更新阶梯价")
    public ResBody updatePriceRule(@ModelAttribute PriceRuleBo priceRuleBo) {
    ...

    @InitBinder
    protected void initBinder(WebDataBinder binder) {
        binder.registerCustomEditor(String.class, new StringTrimmerEditor(true));
        binder.registerCustomEditor(Date.class, new DateEditor(true));
    }

public class PriceRuleBo implements Serializable {

    private String skuId;
    private String priceRule;
    private PriceRuleType priceRuleType;
    //set get ...

@JsonFormat(shape = JsonFormat.Shape.OBJECT)
public enum PriceRuleType implements PairsEnum<PriceRuleType> {
    LADDER_PRICE(1, "阶梯价"), FULL_REDUCTION(2, "满减");
    private int value;
    private String key;

    PriceRuleType(int value, String key) {
        this.value = value;
        this.key = key;
    }
    public int getValue() {
        return value;
    }
    public String getKey() {
        return key;
    }

传值：
priceRuleType=1

测试后发现swagger-ui 中报错，但是RESTClient中测试OK,