Swagger @ApiModelProperty 对象字段不显示

Swagger-ui中，接口请求对象字段不显示，查了半天，原来是大小写原因，首字母必须小写

错误代码：

@ApiModelProperty(value="用户",name="UserId",required=true)
    private Integer UserId;

    public Integer getUserId() {
        return userId;
    }

    public void setUserId(Integer userId) {
        this.userId = userId;
    }

正确代码

@ApiModelProperty(value="用户",name="userId",required=true)
    private Integer userId;

    public Integer getUserId() {
        return userId;
    }

    public void setUserId(Integer userId) {
        this.userId = userId;
    }