用fastjson 序列化实体类时 当属性为私有时 会出现错误

public class CancelReason {
    private String cancelReason;

    public CancelReason(String cancelReason) {
        this.cancelReason = cancelReason;
    }

	public String getcancelReason() {
		return cancelReason;
	}

	public void setcancelReason(String cancelReason) {
		this.cancelReason = cancelReason;
	}
    
    

}

public class CancelReason {
    public String cancelReason;

    public CancelReason(String cancelReason) {
        this.cancelReason = cancelReason;
    }

	public String getcancelReason() {
		return cancelReason;
	}

	public void setcancelReason(String cancelReason) {
		this.cancelReason = cancelReason;
	}
    
    

}

而用gson 不论上述那种情况都能正确解析 o(︶︿︶)o 唉