Java报错: While parsing a protocol message, the input ended unexpectedly in the middle of a field. This could mean either than the input has been truncated or that an embedded message misreported its own length. 意思是:解析协议消息时,输入意外地结束在字段的中间。这可能意味着输入被截断,或者嵌入的消息误报了自己的长度。