修复下载中文文件bug#3

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gaohanghang wants to merge 2 commits intoramostear:masterfrom

gaohanghang:master

Commits on May 6, 2019

1. 下载文件能正常显示中文
 gaohanghang
committed

Commits on May 24, 2019

<删除>[application.properties]: 删除properties配置文件，使用yml配置文件
 gaohanghang
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