第一，在gitee/github上新建仓库
二、在idea上新建一个本地仓库 vcs->import into version control ->create new responity->选择你要你要提交的项目的目录作为仓库
三、右击项目选择git点击add
四、再右击项目点击git再点击commit directory ，选择文件 ，再填写补充信息 再点击commit按钮的下拉选项，选择commit and push
五、再新打开窗口选择commit 填入HTTPS
六、选择commit
七、如果失败，打开项目文件目录，点击git bash here
八、输入git pull origin master --allow-unrelated-histories
出现：
warning: no common commits
remote: Enumerating objects: 3, done.
remote: Counting objects: 100% (3/3), done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 3 (delta 0), reused 0 (delta 0)
Unpacking objects: 100% (3/3), done.
From https://gitee.com/coder_vector/gameSystem
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
Merge made by the 'recursive' strategy.
README.md | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
create mode 100644 README.md
再输入 git push -u origin master -f
出现：
Enumerating objects: 17, done.
Counting objects: 100% (17/17), done.
Delta compression using up to 4 threads
Compressing objects: 100% (15/15), done.
Writing objects: 100% (16/16), 2.56 KiB | 1.28 MiB/s, done.
Total 16 (delta 1), reused 0 (delta 0)
remote: Powered By Gitee.com
To https://gitee.com/coder_vector/gameSystem.git
ba74eb1..2e31e20 master -> master
Branch 'master' set up to track remote branch 'master' from 'origin'.
这样表示建立了仓库之间的联系，项目也成功提交
以后提交直接提交就可以，不会出现类似问题