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README.md: Add a section on solving the character-coding problem in the MySQL dump file.

Bug430-Eden2
Lan Hui 2023-08-03 16:05:24 +08:00
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@ -51,6 +51,31 @@ Enable the site lrr: `sudo a2ensite lrr`. Restart the apache server: `sudo syst
Visit the LRR application by entering this URL in a web browser: http://121.4.94.30/.
### Solving the coding problems in the dump file
If the database contains Chinese characters, the dump file (e.g., lrr_database_dump.sql) may contain *weird* characters, e.g., `研究生`, so weird that no one can tell their meaning.
We need to correct these abnormal characters before we import them to the new database, so that the PHP program can correctly display Chinese information.
The simplest solution is using the ftfy (fixes text for you) Python package to convert them, as follows:
```
from ftfy import fix_text
with open('lrr_database_dump.sql') as f:
content = f.read()
content2 = fix_text(content)
with open('lrr_database_dump_sql_fixed.txt', 'w') as f:
f.write(content2)
```
Now, import data using lrr_database_dump_sql_*fixed*.txt.
If you encounter the 'Unknown MySQL server host' problem during import, replace all apostrophes with a space in the dump file. For example, if a database table field contains *can't*, then the apostrophe between *n* and *t* can cause that problem.
## Enock steps
Enock, a graduate student here, has made a tutorial about how he deployed LRR to a remote server (http://lanlab.org/course/2021s/spm/PuTTY-Server.txt).