string(323) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=raw%E6%A0%BC%E5%BC%8F%E7%85%A7%E7%89%87%E5%A4%84%E7%90%86%E5%90%8E%E4%BF%9D%E5%AD%98%E4%B8%BA%E4%BB%80%E4%B9%88%E6%A0%BC%E5%BC%8F%E6%9C%80%E6%B8%85%E6%99%B0 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
raw格式照片处理后保存为什么格式最清晰
