java.io.IOException: Malformed input or input contains unmappable characters: /data/upload_file/upload/2020/04/16/测试专用_20240416114011A001.pdf

程序部署到Linux环境下，文件上传报错，这是因为服务器编码问题。
使用命令查看服务器编码，正常应该是utf-8，比如：

[root@localhost ~]# locale
LANG=zh_CN.UTF-8
LC_CTYPE="zh_CN.UTF-8"
LC_NUMERIC="zh_CN.UTF-8"
LC_TIME="zh_CN.UTF-8"
LC_COLLATE="zh_CN.UTF-8"
LC_MONETARY="zh_CN.UTF-8"
LC_MESSAGES="zh_CN.UTF-8"
LC_PAPER="zh_CN.UTF-8"
LC_NAME="zh_CN.UTF-8"
LC_ADDRESS="zh_CN.UTF-8"
LC_TELEPHONE="zh_CN.UTF-8"
LC_MEASUREMENT="zh_CN.UTF-8"
LC_IDENTIFICATION="zh_CN.UTF-8"
LC_ALL=

如果编码问题可以使用命令进行修改：

export LC_ALL=zh_CN.UTF-8