init-method="init" destroy-method="close"
时间: 2024-01-11 13:03:20 浏览: 71
These are two attributes of the <bean> element in Spring framework's XML configuration file.
The init-method attribute specifies the name of the method to be called after the bean has been initialized by the container. This method can be used to perform any initialization tasks required by the bean.
The destroy-method attribute specifies the name of the method to be called before the bean is destroyed by the container. This method can be used to perform any cleanup tasks required by the bean.
Both init-method and destroy-method are optional attributes. If they are not specified, the container will not call any special methods on the bean during initialization or destruction.
相关问题
那如果我使用的是com.mchange.v2.c3p0.ComboPooledDataSource,又该怎么写,是不是我的struts.xml文件不对导致了只读,还是用这个类就只能只读呢,这是struts.xml<context-param> <param-name>contextConfigLocation </param-name> <param-value>/WEB-INF/applicationContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <display-name>Struts2</display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <filter> <filter-name>struts2</filter-name> <filter-class> <!--2.5版本的写法 --> org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter </filter-class> </filter> <filter> <filter-name>openSessionInViewFilter</filter-name> <filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class> <init-param> <param-name>flushMode</param-name> <param-value>AUTO</param-value> </init-param> <init-param><param-name>OpenSessionInViewFilter</param-name> <param-value>/*</param-value></init-param> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/* </url-pattern> </filter-mapping>
如果您使用的是com.mchange.v2.c3p0.ComboPooledDataSource,则需要在配置文件中指定连接池的读写属性。您可以参考以下示例代码:
```
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="com.mysql.jdbc.Driver" />
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/mydatabase" />
<property name="user" value="root" />
<property name="password" value="password" />
<property name="acquireIncrement" value="5" />
<property name="minPoolSize" value="10" />
<property name="maxPoolSize" value="100" />
<property name="maxStatements" value="50" />
<property name="readOnly" value="false" />
</bean>
```
在此示例中,我们将readOnly属性设置为false,以允许对数据库进行读写操作。如果您的readOnly属性已经设置为false,那么您可以检查您的数据库用户是否具有写入权限。
另外,您的struts.xml文件中的配置看起来没有问题,不会导致只读。您可以检查您的数据库配置和权限设置来解决只读问题。
import os import random import time from fnmatch import fnmatch import pygame import tkinter as tk from tkinter import * import wave import threading import tkinter import tkinter.filedialog import tkinter.messagebox import pyaudio root = tk.Tk() root.geometry("450x200+374+182") root.title("英语单词") english1 = "开始" w = Label(root, font=('times', 20, 'bold'), text=english1) w.pack() timer_running = False def word(): path = "D:\MY python\English" lists = os.listdir(path) english = (random.choice(lists)) global english1 english1 = english.strip(".wav") time.sleep(3) basedir = r"D:\MY python\English" for root, dirs, files in os.walk(basedir): for file in files: english3 = os.path.join(root, file) if fnmatch(file, f"{english1}*.wav"): pygame.mixer.init() pygame.mixer.music.load(english3) pygame.mixer.music.play() w.configure(text=f"{english1}") w.after(100, word) fileName = None allowRecording = False CHUNK_SIZE = 1024 CHANNELS = 2 FORMAT = pyaudio.paInt16 RATE = 44100 def record(): global fileName p = pyaudio.PyAudio() stream = p.open(format=FORMAT, channels=CHANNELS, rate=RATE, input=True, frames_per_buffer=CHUNK_SIZE) wf = wave.open(fileName, 'wb') wf.setnchannels(CHANNELS) wf.setsampwidth(p.get_sample_size(FORMAT)) wf.setframerate(RATE) while allowRecording: data = stream.read(CHUNK_SIZE) wf.writeframes(data) wf.close() stream.stop_stream() stream.close() p.terminate() fileName = None def start(): global allowRecording, fileName fileName = tkinter.filedialog.asksaveasfilename(filetypes=[('未压缩波形文件', '*.wav')]) if not fileName: return if not fileName.endswith('.wav'): fileName = fileName + '.wav' allowRecording = True start_timer() lbStatus['text'] = '正在录音中...' threading.Thread(target=record).start() def stop(): global allowRecording allowRecording = False lbStatus['text'] = '录音已结束' stop_timer() def closeWindow(): if allowRecording: tkinter.messagebox.showerror('Recording', 'Please stop recording before close the window.') return root.destroy() def tick(): global sec sec += 1 time['text'] = sec # Take advantage of the after method of the Label if timer_running: time.after(1000, tick) def start_timer(): global timer_running timer_running = True tick() def stop_timer(): global timer_running, sec timer_running = False sec = 0 time['text'] = sec button = tk.Button(text="开始", command=word) button.pack() btnStart = tkinter.Button(root, text='开始录音', command=start) btnStart.pack() btnStop = tkinter.Button(root, text='结束录音', command=stop) btnStop.pack() lbStatus = tkinter.Label(root, text='录音已准备', anchor='w', fg='green') lbStatus.pack() root.protocol('WM_DELETE_WINDOW', closeWindow) time = Label(root, fg='green') time.pack() root.mainloop()
要实现点击按钮退出并重置时间,可以在按钮的命令函数中添加退出和重置时间的功能。以下是修改的代码示例:
```python
import os
import random
import time
from fnmatch import fnmatch
import pygame
import tkinter as tk
from tkinter import *
import wave
import threading
import tkinter
import tkinter.filedialog
import tkinter.messagebox
import pyaudio
root = tk.Tk()
root.geometry("450x200+374+182")
root.title("英语单词")
english1 = "开始"
w = Label(root, font=('times', 20, 'bold'), text=english1)
w.pack()
timer_running = False
def word():
path = "D:\MY python\English"
lists = os.listdir(path)
english = (random.choice(lists))
global english1
english1 = english.strip(".wav")
time.sleep(3)
basedir = r"D:\MY python\English"
for root, dirs, files in os.walk(basedir):
for file in files:
english3 = os.path.join(root, file)
if fnmatch(file, f"{english1}*.wav"):
pygame.mixer.init()
pygame.mixer.music.load(english3)
pygame.mixer.music.play()
w.configure(text=f"{english1}")
w.after(100, word)
fileName = None
allowRecording = False
CHUNK_SIZE = 1024
CHANNELS = 2
FORMAT = pyaudio.paInt16
RATE = 44100
def record():
global fileName
p = pyaudio.PyAudio()
stream = p.open(format=FORMAT,
channels=CHANNELS,
rate=RATE,
input=True,
frames_per_buffer=CHUNK_SIZE)
wf = wave.open(fileName, 'wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(p.get_sample_size(FORMAT))
wf.setframerate(RATE)
while allowRecording:
data = stream.read(CHUNK_SIZE)
wf.writeframes(data)
wf.close()
stream.stop_stream()
stream.close()
p.terminate()
fileName = None
def start():
global allowRecording, fileName
fileName = tkinter.filedialog.asksaveasfilename(filetypes=[('未压缩波形文件', '*.wav')])
if not fileName:
return
if not fileName.endswith('.wav'):
fileName = fileName + '.wav'
allowRecording = True
start_timer()
lbStatus['text'] = '正在录音中...'
threading.Thread(target=record).start()
def stop():
global allowRecording
allowRecording = False
lbStatus['text'] = '录音已结束'
stop_timer()
def closeWindow():
if allowRecording:
tkinter.messagebox.showerror('Recording', 'Please stop recording before close the window.')
return
stop_timer() # 停止计时器
root.destroy()
def tick():
global sec
sec += 1
time['text'] = sec
# Take advantage of the after method of the Label
if timer_running:
time.after(1000, tick)
def start_timer():
global timer_running, sec
sec = 0 # 重置时间
timer_running = True
tick()
def stop_timer():
global timer_running, sec
timer_running = False
sec = 0
time['text'] = sec
button = tk.Button(text="开始", command=word)
button.pack()
btnStart = tkinter.Button(root, text='开始录音', command=start)
btnStart.pack()
btnStop = tkinter.Button(root, text='结束录音', command=stop)
btnStop.pack()
lbStatus = tkinter.Label(root, text='录音已准备', anchor='w', fg='green')
lbStatus.pack()
root.protocol('WM_DELETE_WINDOW', closeWindow)
time = Label(root, fg='green')
time.pack()
root.mainloop()
```
在上面的代码中,我添加了一个 `stop_timer` 函数来停止计时器并重置时间。在 `stop` 函数中调用 `stop_timer` 函数来停止计时器。同时,在 `closeWindow` 函数中也调用了 `stop_timer` 函数来确保在关闭窗口之前停止计时器。