refactor(utils): 更新异常类导入路径并添加JSON依赖

Administrator

yesterday 75ffb97146a0a15d76ae4603ccf328eb9716d798

 src/main/java/com/xcong/excoin/modules/contract/parameter/vo/HoldOrderListVo.java

@@ -47,6 +47,9 @@
    @ApiModelProperty(value = "张数")
    private int symbolCnt;

    @ApiModelProperty(value = "可平张数")
    private int symbolCntSale;

    @ApiModelProperty(value = "回报率")
    private BigDecimal returnRate;