MySQLdb 的问题 python

Problems with MySQLdb python

当我尝试使用用户 "root" 连接到 mysql 时,我的应用程序 returns "Access denied for user *"ODBC"@"localhost" (using password:NO)"*。我不知道为什么会出现这个。

我像 GUI 一样使用 Tkinter,我只测试了 Connection 的脚本,没问题。

代码连接

import MySQLdb

class Conexao():
    def __init__(self, host,user,passwd,db):
        self.host = host
        self.user = user
        self.passwd = passwd
        self.db = db

    def getconnection(self):
        try:
            self.conn = MySQLdb.connect(host=self.host,
                                        user = self.user,
                                        passwd = self.passwd,
                                        db = self.db)
            print "Connected"
            return self.conn.cursor()
        except MySQLdb.Error,e:
            print " error "+ str(e[1])
            return e

代码应用程序

from Tkinter import *

import sys
sys.path.insert(0,'C:\Users\felipe.cunha\Documents\project')

from conexao.conexao import Conexao


"""
b.execute("select * from setor")
>>> b.fetchall()
"""
class View(Frame):
        def __init__(self,master = None):
                Frame.__init__(self)
                self.master.title("teste")
                self.create_menu()
        def create_menu(self):#,width = self.width,height = self.height):
                host = "localhost"
                label_menu = Label(self.master,text = 'Login')
                label_menu.pack()

                entrada_menu_login = Entry(self.master)# user
                entrada_menu_senha = Entry(self.master, show = "*")# passwd                

                conn = Conexao(host,entrada_menu_login.get(),entrada_menu_senha.get(),"dsti")
                #conn = Conexao(host,"root","d04m10","dsti")


                btn_login = Button(self.master,text="Logar",command = conn.getConnection)#self.show_entry_fields)

                entrada_menu_login.pack()
                entrada_menu_senha.pack()
                btn_login.pack()


        def show_entry_fields(self):
                print(self.entrada_menu_login.get(), self.entrada_menu_senha.get())





app = View()
app.mainloop()

问题是您在 GUI 启动时创建了连接,用户还没有能力输入用户名或密码。 entrada_menu_loginentrada_menu_senha 在您创建连接时都是空白的。

解决方案是在用户单击按钮之前不创建连接。

就像 Bryan 所说,这可能是您的代码的问题,而不是直接调用按钮 conn.getConnection(),尝试一种方法,将入口变量保存到 'self' 中,然后然后当按钮被调用时,你就在那个时候创建​​了连接。

代码看起来像 -

class View(Frame):
        def __init__(self,master = None):
                Frame.__init__(self)
                self.master.title("teste")
                self.create_menu()
        def create_menu(self):#,width = self.width,height = self.height):
                host = "localhost"
                label_menu = Label(self.master,text = 'Login')
                label_menu.pack()

                self.entrada_menu_login = Entry(self.master)# user
                self.entrada_menu_senha = Entry(self.master, show = "*")# passwd


                btn_login = Button(self.master,text="Logar",command = self.buttonListener) #self.show_entry_fields

                entrada_menu_login.pack()
                entrada_menu_senha.pack()
                btn_login.pack()

        def buttonListener(self):
            conn = Conexao(host,self.entrada_menu_login.get(),self.entrada_menu_senha.get(),"dsti")                                
            #conn = Conexao(host,"root","d04m10","dsti")
            dbcursor = conn.getConnection()
            #Do the rest of the logic you want to do.