Question

大家好我试图在使用python从网站抓取它们之后将一些值插入到MySQL数据库中。但是在将它们插入数据库时会给我错误。错误如下：mysql.connector.errors.ProgrammingError：1064（42000）：您的SQL语法中有错误;检查与MySQL服务器版本对应的手册，以便在第2行的''附近使用正确的语法

请帮帮我。提前致谢。以下是代码：

conn =     mysql.connector.connect(user='root',password='root',host='localhost',database ='crawler_database')
mycursor = conn.cursor()
source_code = requests.get(item_url)
plain_text = source_code.text
soup = BeautifulSoup(plain_text)
my_list=[]
# GATHER INFORMATION FROM PAGE
for product_name in soup.findAll('span', {'itemprop': 'name'}):
    prod_name = " " + product_name.string
    my_list.append(prod_name)
    print("Product Name :" + prod_name)
for low_price in soup.findAll('span', {'itemprop': 'lowPrice'}):
    l_price = " " + low_price.string
    my_list.append(l_price)
    print("Lowest price :" + low_price.string)
for high_price in soup.findAll('span', {'itemprop': 'highPrice'}):
    h_price = " " + high_price.string
    my_list.append(h_price)
    print("Highest price :" + high_price.string)
# FORMAT AND REMOVE UNWANTED CHARACTER FROM DATA
for specs in soup.findAll('ul', {'class': 'c-spec'}):
    crop_str1 = str(specs).replace("<li>", "")
    crop_str2 = crop_str1.replace("</li>", ",")
    crop_str3 = crop_str2.replace("</ul>", "%")
    crop_str4 = crop_str3.replace('<ul class="c-spec">', '$')
    crop_str5 = crop_str4.partition('$')[-1].rpartition('%')[0]
    my_list2 = crop_str5.split(",")
    merged_list=my_list+my_list2
    print(merged_list)
    d0=" " + str(merged_list[0])
    d1=" " + str(merged_list[1])
    d2=" " + str(merged_list[2])
    d3=" " + str(merged_list[3])
    d4=" " + str(merged_list[4])
    d5=" " + str(merged_list[5])
    d6=" " + str(merged_list[6])
    print("Android OS :" + merged_list[3])
    print("Camera :" + merged_list[4])
    print("SIM :" + merged_list[5])
    print("Display size :" + merged_list[6])
    mycursor.execute("""INSERT INTO mobile_spec(prod_name, low_price, high_price, android_os, camera, sim, d_size)
             VALUES ((%s, %s, %s, %s, %s, %s , %s)""",(d0, d1, d2, d3, d4, d5, d6))
    conn.commit()

Answer 1

您将实际字符串＆＃34; d0＆＃34;等传递给MySQL，后者不知道如何处理它们。这些是Python变量，因此您需要将它们的值传递给MySQL。你用占位符来做到这一点：

mycursor.execute("""INSERT INTO mobile_spec(android_os, camera, sim, d_size)
                 VALUES (%s, %s, %s , %s)""", (d0, d1, d2, d3))

您的代码可以进一步简化，因为您首先在列表中获取了params，因此您可以直接将其传递给MySQL而不需要d*个变量。

mycursor.execute("""INSERT INTO mobile_spec(android_os, camera, sim, d_size)
                 VALUES (%s, %s, %s , %s)""", my_list)

插入时出现Python / MySQL错误

1 个答案: