The curl command lack of "-L" options, cause download file fail(the size of download file is empty).take below command as example:

> rm -rf jmh-core-1.37.jar ; curl -O --fail https://maven.aliyun.com/repository/public/org/openjdk/jmh/jmh-core/1.37/jmh-core-1.37.jar ; ls -lh jmh-core-1.37.jar ; du -sh jmh-core-1.37.jar
  % Total % Received % Xferd Average Speed Time Time Time Current
                                 Dload Upload Total Spent Left Speed
  0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
-rw-rw-r-- 1 yansendao yansendao 0 Apr 26 10:54 jmh-core-1.37.jar
0 jmh-core-1.37.jar


When add the -L option, curl download the link success, as below:

> rm -rf jmh-core-1.37.jar ; curl -OL --fail https://maven.aliyun.com/repository/public/org/openjdk/jmh/jmh-core/1.37/jmh-core-1.37.jar ; ls -lh jmh-core-1.37.jar ; du -sh jmh-core-1.37.jar
  % Total % Received % Xferd Average Speed Time Time Time Current
                                 Dload Upload Total Spent Left Speed
  0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
100 540k 100 540k 0 0 1084k 0 --:--:-- --:--:-- --:--:-- 2596k
-rw-rw-r-- 1 yansendao yansendao 541K Apr 26 10:58 jmh-core-1.37.jar
544K jmh-core-1.37.jar