this project is only used to crawl bbs.byr.cn data.
according to authentication mechanism and data stream, i simplify the crawler flow.
make crawler is easier, smaller and fast.

only 3 steps needed:
1: create mysql db, tables information show bellow

table sect is used to store each section on the lefp panel
+-------+------------------+------+-----+---------+----------------+
| Field | Type             | Null | Key | Default | Extra          |
+-------+------------------+------+-----+---------+----------------+
| id    | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| url   | varchar(60)      | NO   | UNI | NULL    |                |
| name  | varchar(50)      | NO   |     | NULL    |                |
+-------+------------------+------+-----+---------+----------------+

table auart is used to store each article description
+--------+---------------------+------+-----+-------------------+----------------+
| Field  | Type                | Null | Key | Default           | Extra          |
+--------+---------------------+------+-----+-------------------+----------------+
| id     | bigint(20) unsigned | NO   | PRI | NULL              | auto_increment |
| uptime | date                | YES  |     | 2016-05-19        |                |
| hot    | int(10) unsigned    | NO   |     | 0                 |                |
| author | varchar(50)         | NO   | MUL | NULL              |                |
| title  | varchar(100)        | NO   |     | NULL              |                |
| url    | varchar(80)         | NO   | UNI | http:https://bbs.byr.cn |                |
+--------+---------------------+------+-----+-------------------+----------------+

table art is used to store each artile detail content
+-------+---------------------+------+-----+---------+----------------+
| Field | Type                | Null | Key | Default | Extra          |
+-------+---------------------+------+-----+---------+----------------+
| id    | bigint(20) unsigned | NO   | PRI | NULL    | auto_increment |
| url   | varchar(80)         | NO   | UNI | NULL    |                |
| text  | text                | YES  |     | NULL    |                |
+-------+---------------------+------+-----+---------+----------------+

2: crawl bbs section information
cmd: scrapy crawl bbscat

3: crawl bbs content
cmd: scrapy crawl bbs

note:
my crawl is very fast. all bbs article is about 1.1 millions. i just use 6 hours to finish it.
machine: aliyun ecs, 1GB Mem, 1 Core CPU, 1MB bandwith

because of auth., please replace your account and passwd. in your own project.