之前部署的gitlab代码托管平台，采用ssh方式连接gitlab，在客户机上产生公钥上传到gitlab的SSH-Keys里，则git clone下载和git push上传都没问题，这种方式很安全。

后来应开发同事要求采用http方式连接gitlab，那么首先将project工程的“Visibility Level”改为“Public”公开模式，并且要保证gitlab的http端口像客户机开放。

后面发现了一个问题:
http方式连接gitlab后，git clone下载没有问题，但是git push上传有报错：
error: The requested URL returned error: 401 Unauthorized while accessing http://git.xqshijie.net:8081/weixin/weixin.git/info/refs
fatal: HTTP request failed

或者
The requested URL returned error: 403 Forbidden while accessing

实例如下：
假设git的url为http://git.wangshibo.net
[root@test-huanqiu ~]# mkdir /root/git
[root@test-huanqiu ~]# cd /root/git
[root@test-huanqiu git]# git init .
[root@test-huanqiu git]# git clone http://git.wangshibo.net:8081/weixin/weixin.git
Initialized empty Git repository in /root/git/weixin/.git/
remote: Counting objects: 10, done.
remote: Compressing objects: 100% (6/6), done.
remote: Total 10 (delta 0), reused 0 (delta 0)
Unpacking objects: 100% (10/10), done.

上面可以看出，已经能成功git clone下代码
[root@test-huanqiu git]# ll
total 4
drwxr-xr-x. 3 root root 4096 Nov 30 15:58 weixin
[root@test-huanqiu git]# cd weixin/
[root@test-huanqiu weixin]# ll
total 8
-rw-r--r--. 1 root root 15 Nov 30 15:58 heihei
-rw-r--r--. 1 root root 1 Nov 30 15:38 README.md

现在测试下git push
[root@test-huanqiu weixin]# git rm heihei
[root@test-huanqiu weixin]# touch test.file
[root@test-huanqiu weixin]# echo "123456" > test.file
[root@test-huanqiu weixin]# git add .
[root@test-huanqiu weixin]# git commit -m "this is a test"
[root@test-huanqiu weixin]# git push                                      //或者git push -u origin master
error: The requested URL returned error: 401 Unauthorized while accessing http://git.wangshibo.net:8081/weixin/weixin.git/info/refs

fatal: HTTP request failed

解决办法：
在代码的.git/config文件内[remote "origin"]的url的gitlab域名前添加gitlab注册时的“用户名:密码@”
如下，gitlab的用户名是wangshibo，假设密码是HU@wew12378!h8

查看gitlab界面里的登陆用户名：

然后修改代码里的.git/config文件
[root@test-huanqiu weixin]# cd .git
[root@test-huanqiu .git]# cat config
[core]
repositoryformatversion = 0
filemode = true
bare = false
logallrefupdates = true
[remote "origin"]
fetch = +refs/heads/*:refs/remotes/origin/*
url = http://git.wangshibo.net:8081/weixin/weixin.git
[branch "master"]
remote = origin
merge = refs/heads/master

修改如下：
[root@jenkins-server .git]# cat config
[core]
repositoryformatversion = 0
filemode = true
bare = false
logallrefupdates = true
[remote "origin"]
fetch = +refs/heads/*:refs/remotes/origin/*
url = http://wangshibo:HU@wew12378!h8@git.wangshibo.net:8081/weixin/weixin.git
[branch "master"]
remote = origin
merge = refs/heads/master

git push上传代码到gitlab上，报错401或403