摘要：In my project of sina spider as well as the course of Operating System, I come up with the use ofSemaphore and Mutex, I make a note here for my study and my work.DefinitionIn computer science, a semaphore is a variable or abstract data type provides a simple but useful abstraction controlling access 阅读全文

摘要：1 # -*- coding: utf-8 -*- 2 from PyQt4.QtGui import * 3 from PyQt4.QtCore import * 4 import sys 5 6 QTextCodec.setCodecForTr(QTextCodec.codecForName("utf8")) 7 8 class Progess(QDialog): 9 def __init__(self,parent=None):10 super(Progess,self).__init__(parent)11 self.setWindowT... 阅读全文

摘要：import json jsonobject = json.load(file('1222508030.json')) cnt = 0 for ele in jsonobject['result']: cnt = cnt + 1 print("\n%d#" % cnt) print(ele['content']['text']) raw_input() 阅读全文

摘要：摘要：虽然session机制在web应用程序中被采用已经很长时间了，但是仍然有很多人不清楚session机制的本质，以至不能正确的应用这一技术。本文将详细讨论session的工作机制并且对在Java web application中应用session机制时常见的问题作出解答。目录：一、术语session二、HTTP协议与状态保持三、理解cookie机制四、理解session机制五、理解javax.servlet.http.HttpSession六、HttpSession常见问题七、跨应用程序的session共享八、总结参考文档一、术语session在我的经验里，session这个词被滥用的程度 阅读全文

摘要：方法1：工程右键--Build Path--Configure Build Path -- Java Build Path --Libraries -- Add External JARs方法2：工程--Referenced Libraries右键--Build Path--Configure Build Path -- Java Build Path --Libraries -- Add External JARs 阅读全文