Question

我有这个注册页面，当我提交表单时，我收到此错误：并非在字符串格式化期间转换所有参数

class RegistrationForm(Form):
email = StringField('Email address')
password = PasswordField('password')
name = StringField('Name')

@app.route('/register/', methods=['GET', 'POST'])
def register():
try:
    form = RegistrationForm(request.form)
    if request.method == 'POST':
        email = form.email.data
        password = sha256_crypt.encrypt((str(form.password.data)))
        con = connection()
        cur=con.cursor()
        x = cur.execute("SELECT * FROM user WHERE username = (%s)",(thwart(email)))
        if int(x) > 0:
            return render_template('register.html',form=form)
        else:
            cur.execute("INSERT INTO user (username,password,name) VALUES (%s,%s,%s);",(thwart(email),thwart(password),thwart(name),))
            con.commit()
            cur.close()
            con.close()
            return redirect(url_for('dashboard'))

    return render_template('register.html', form=form)
except Exception as e:
    return str(e)

Answer 1

x = cur.execute("SELECT * FROM user WHERE username = (%s)",(thwart(email)))

execute的第二个参数应该是一个元组，你错过了,：

cur.execute("SELECT * FROM user WHERE username = (%s)",(thwart(email),))

我猜你也不需要()周围的%s，但这取决于你的牌桌的实际情况。

进一步澄清：

('str')将评估字符串'str'，而不是包含它的元组。

要创建一元组，您必须包含逗号：('str',)。

错误：在字符串格式化期间未转换所有参数

1 个答案: