挿入/更新される内容に応じて、いくつかのエラーが発生します。
アイテムを処理するためのコードは次のとおりです。
def process_item(self, item, spider):
try:
if 'producer' in item:
self.cursor.execute("""INSERT INTO Producers (title, producer) VALUES (%s, %s)""", (item['title'], item['producer']))
elif 'actor' in item:
self.cursor.execute("""INSERT INTO Actors (title, actor) VALUES (%s, %s)""", (item['title'], item['actor']))
elif 'director' in item:
self.cursor.execute("""INSERT INTO Directors (title, director) VALUES (%s, %s)""", (item['title'], item['director']))
else:
self.cursor.execute("""UPDATE example_movie SET distributor=%S, rating=%s, genre=%s, budget=%s WHERE title=%s""", (item['distributor'], item['rating'], item['genre'], item['budget'], item['title']))
self.conn.commit()
except MySQLdb.Error, e:
print "Error %d: %s" % (e.args[0], e.args[1])
return item
itemsスクレーパーから返されるの例を次に示します。
[{'budget': [u'N/A'], 'distributor': [u'Lorimar'], 'genre': [u'Action'], 'rating': [u'R'],'title': [u'Action Jackson']}, {'actor': u'Craig T. Nelson', 'title': [u'Action Jackson']}, {'actor': u'Sharon Stone', 'title': [u'Action Jackson']}, {'actor': u'Carl Weathers', 'title': [u'Action Jackson']}, {'producer': u'Joel Silver', 'title': [u'Action Jackson']}, {'director': u'Craig R. Baxley', 'title': [u'Action Jackson']}]
返されるエラーは次のとおりです。
2013-08-25 23:04:57-0500 [ActorSpider] ERROR: Error processing {'budget': [u'N/A'],
'distributor': [u'Lorimar'],
'genre': [u'Action'],
'rating': [u'R'],
'title': [u'Action Jackson']}
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/scrapy/middleware.py", line 62, in _process_chain
return process_chain(self.methods[methodname], obj, *args)
File "/Library/Python/2.7/site-packages/scrapy/utils/defer.py", line 65, in process_chain
d.callback(input)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/twisted/internet/defer.py", line 361, in callback
self._startRunCallbacks(result)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/twisted/internet/defer.py", line 455, in _startRunCallbacks
self._runCallbacks()
--- <exception caught here> ---
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/twisted/internet/defer.py", line 542, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "/Users/fortylashes/Documents/Management_Work/BoxOfficeMojo/BoxOfficeMojo/pipelines.py", line 53, in process_item
self.cursor.execute("""UPDATE example_movie SET distributor=%S, rating=%s, genre=%s, budget=%s WHERE title=%s""", (item['distributor'], item['rating'], item['genre'], item['budget'], item['title']))
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/MySQLdb/cursors.py", line 159, in execute
query = query % db.literal(args)
exceptions.ValueError: unsupported format character 'S' (0x53) at index 38
Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), 'Craig T. Nelson')' at line 1
2013-08-25 23:04:57-0500 [ActorSpider] DEBUG: Scraped from <200 http://www.boxofficemojo.com/movies/?id=actionjackson.htm>
{'actor': u'Craig T. Nelson', 'title': [u'Action Jackson']}
Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), 'Sharon Stone')' at line 1
2013-08-25 23:04:57-0500 [ActorSpider] DEBUG: Scraped from <200 http://www.boxofficemojo.com/movies/?id=actionjackson.htm>
{'actor': u'Sharon Stone', 'title': [u'Action Jackson']}
Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), 'Carl Weathers')' at line 1
2013-08-25 23:04:57-0500 [ActorSpider] DEBUG: Scraped from <200 http://www.boxofficemojo.com/movies/?id=actionjackson.htm>
{'actor': u'Carl Weathers', 'title': [u'Action Jackson']}
Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), 'Joel Silver')' at line 1
2013-08-25 23:04:57-0500 [ActorSpider] DEBUG: Scraped from <200 http://www.boxofficemojo.com/movies/?id=actionjackson.htm>
{'producer': u'Joel Silver', 'title': [u'Action Jackson']}
Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), 'Craig R. Baxley')' at line 1
2013-08-25 23:04:57-0500 [ActorSpider] DEBUG: Scraped from <200 http://www.boxofficemojo.com/movies/?id=actionjackson.htm>
{'director': u'Craig R. Baxley', 'title': [u'Action Jackson']}
どうやら問題が多いようです。読んでくれてありがとう！すべての提案やアイデアは大歓迎です!
::::更新/詳細情報::::
Actors合計 52 のテスト セットのうち 3 つのムービーが存在するように見えます。これらは、ProducersおよびDirectorsテーブル に挿入されています。注：UPDATEステートメントはまったく機能していません。
これらの映画は次のAbraham Lincoln: Vampire Hunterとおりです。Ace Ventura: Pet DetectiveAce Ventura: When Nature Calls
興味深いことに、これらはすべての映画:ですtitle- これが何を意味するのかはわかりませんが、誰かアイデアがあれば共有してください!
:::::解決済みの挿入:::::
scraper問題は、個々の項目をリストに入れることによって引き起こされたことが判明しました。{'actor': [u'this one guy']反対にtop {'actor': u'this one guy'}.