3. 在Django 2.2中启动开发服务器时处理SQLite3错误

[root@djangoServer work]# sqlite3 --version
3.7.17 2013-05-20 00:56:22 118a3b35693b134d56ebd780123b7fd6f1497668
[root@djangoServer work]#

＃更新SQLite 3
＃获取源代码（在主目录中运行）
[root@djangoServer ~]# cd ~
[root@djangoServer ~]# wget https://www.sqlite.org/2019/sqlite-autoconf-3270200.tar.gz
[root@djangoServer ~]# tar -zxvf sqlite-autoconf-3270200.tar.gz

＃构建并安装
[root@djangoServer ~]# cd sqlite-autoconf-3270200
[root@djangoServer sqlite-autoconf-3270200]# ./configure --prefix=/usr/local
[root@djangoServer sqlite-autoconf-3270200]# make && make install
[root@djangoServer sqlite-autoconf-3270200]# find /usr/ -name sqlite3
/usr/bin/sqlite3
/usr/lib64/python2.7/sqlite3
/usr/local/bin/sqlite3
/usr/local/python3/lib/python3.7/site-packages/django/db/backends/sqlite3
/usr/local/python3/lib/python3.7/sqlite3
[root@djangoServer sqlite-autoconf-3270200]#

＃不必要的文件，目录删除
[root@djangoServer sqlite-autoconf-3270200]# cd ~
[root@djangoServer ~]# ls
anaconda-ks.cfg  sqlite-autoconf-3270200  sqlite-autoconf-3270200.tar.gz
[root@djangoServer ~]#
[root@djangoServer ~]# rm -rf sqlite-autoconf-3270200.tar.gz
[root@djangoServer ~]# rm -rf sqlite-autoconf-3270200

＃检查版本
## 最新安装的sqlite3版本
[root@djangoServer ~]# /usr/local/bin/sqlite3 --version
3.27.2 2019-02-25 16:06:06 bd49a8271d650fa89e446b42e513b595a717b9212c91dd384aab871fc1d0f6d7
[root@djangoServer ~]#

## Centos7自带的sqlite3版本
[root@djangoServer ~]# /usr/bin/sqlite3 --version
3.7.17 2013-05-20 00:56:22 118a3b35693b134d56ebd780123b7fd6f1497668
[root@djangoServer ~]#

## 可以看到sqlite3的版本还是旧版本，那么需要更新一下。
[root@djangoServer ~]# sqlite3 --version
3.7.17 2013-05-20 00:56:22 118a3b35693b134d56ebd780123b7fd6f1497668
[root@djangoServer ~]#

## 更改旧的sqlite3
[root@djangoServer ~]# mv /usr/bin/sqlite3  /usr/bin/sqlite3_old

## 软链接将新的sqlite3设置到/usr/bin目录下
[root@djangoServer ~]# ln -s /usr/local/bin/sqlite3   /usr/bin/sqlite3

## 查看当前全局sqlite3的版本
[root@djangoServer ~]# sqlite3 --version
3.27.2 2019-02-25 16:06:06 bd49a8271d650fa89e446b42e513b595a717b9212c91dd384aab871fc1d0f6d7
[root@djangoServer ~]#

＃将路径传递给共享库
# 设置开机自启动执行，可以将下面的export语句写入 ~/.bashrc 文件中，如果如果你想立即生效，可以执行source 〜/.bashrc 将在每次启动终端时执行
[root@djangoServer ~]# export LD_LIBRARY_PATH="/usr/local/lib"

＃检查Python的SQLite3版本
[root@djangoServer ~]# ipython3
Python 3.7.1 (default, May  3 2019, 09:55:04)
Type 'copyright', 'credits' or 'license' for more information
IPython 7.5.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: import sqlite3

In [2]: sqlite3.sqlite_version
Out[2]: '3.27.2'

In [3]: exit                                                               
[root@djangoServer ~]#

＃启动开发服务器
[root@djangoServer ~]# cd /work/
[root@djangoServer work]# ls
db.sqlite3  manage.py  polls  test_django
[root@djangoServer work]# python3 manage.py runserver
Watching for file changes with StatReloader
Performing system checks...

System check identified no issues (0 silenced).
May 03, 2019 - 21:32:28
Django version 2.2.1, using settings 'test_django.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.