jxst051665-优快云博客

原创安全小记

Web Security： As a user Do not click suspicious link in suspicious places As a website developer/tester Never trust user input and always filter metacharacters Cookie protection Pay attention to Javascript<br /

2010-07-20 12:30:00 669

转载 sizeof union struct 内存对齐

union的sizeof问题union u { 　double a; 　int b; }; union u2 { 　char a[13]; 　int b; }; union u3 { 　char a[13]; 　char b; };

2010-05-25 22:38:00 969

转载 C++中如何使类不能继承

　　java中有一种类不能被继承,那就是final类. C++要实现一个不能被继承的类有很多方法. 主要的思路就是使子类不能构造父类的部分,这样子类就没有办法实例化整个子类.这样就限制了子类的继承. 所以我们可以将父类的构造函数声明成为私有的,但是这样父类不就不能实例化.　　我们可以利用友员不能被继承的特性! 　　首先假设CParent不能够被继承. 让CPa

2010-05-25 22:10:00 1461

原创词法分析 VS 语法分析

词法分析阶段是编译过程的第一个阶段。这个阶段的任务是从左到右一个字符一个字符地读入源程序，即对构成源程序的字符流进行扫描然后根据构词规则识别单词(也称单词符号或符号，如标识符、常数、运算符、定界符等)。词法分析程序实现这个任务。词法分析程序可以使用Lex等工具自动生成。词法分析是从左到右逐个字符对构成源程序的字符串进行扫描，依据词法规则，识别出一个一个的单词（token），把作为字符串的

2009-11-20 11:32:00 7695

转载 V4L2官方实例

/* * V4L2 video capture example * * This program can be used and distributed without restrictions. */#include #include #include #include #include /* getopt_long()

2009-09-25 17:29:00 2453 6

原创 File Sync 扩展对象

package com.xxxxxx.xfast.js.lib;import java.io.*;import java.util.Enumeration;import java.util.Hashtable;import java.util.Vector;import javax.microedition.io.*;import javax.microeditio

2009-09-18 10:29:00 1908

原创 Widget File Sync部分的HTML和JS(个人风格)

index.html REUTERS 同步下载 &nbs

2009-09-18 10:22:00 1038

原创 Symbian有待理解的部分

As we’ve seen, deleting an object is simply a matter of using the deleteoperator on a pointer to the object to be deleted. If a pointer is alreadyzero, then calling delete on it is harmless. Howev

2009-09-18 10:17:00 611

原创 Symbian Cpp基础语法要点(2)

Use:? const TDesC& to pass a descriptor for data that you will read from,but not attempt to change? TDes& to pass a descriptor for data that you want to change.Take this global function called

2009-09-18 10:16:00 509

原创 Observer

The observer pattern (a subset of the asynchronous publish/subscribe pattern) is a software design pattern in which an object,called the subject, maintains a list of its dependents, calledobserv

2009-09-18 10:12:00 549

原创 Memento

The memento pattern is a software design pattern that provides the ability to restore an object to its previous state (undo via rollback).The memento pattern is used by two objects: the originator

2009-09-18 10:08:00 538

转载 UAProf

UAProf / User Agent Profile Reference<!-- <!--google_ad_client = "pub-6958268168919450";/* uaprofRefHomeTop, 300x250 */google_ad_slot = "7953627062";google_ad_width = 300;google_ad_hei

2009-09-01 08:58:00 2083

原创 Symbian Cpp基础语法要点(1)

There are two places in Symbian OS where you can create objects:the heap and the program stack.In Symbian OS, classes that are intended to be instantiated on the heapare nearly always derived

2009-09-01 08:54:00 662

原创 Mediator

Introduction The Mediator is a behavioral design pattern that provides a central hub to guide the interactions between many objects. According to Gamma et al, the intent of the Media

2009-08-18 15:13:00 605

原创 Iterator

The Iterator is one of the simplest and most frequently used of thedesign patterns. The Iterator pattern allows you to move through a list orcollection of data using a standard interface without h

2009-08-11 16:24:00 601

转载 oracle数组类型

源自：http://jihongbin12329.javaeye.com/blog/108674 关于ORACLE中的数组：记录同集合集合可以有三种实现方式：1 自定义一个TYPE使用VARRAY来得到一个数组但只能对基本类型定义如：CREATE TYPE 类型名 AS VARRAY OF VARCHAR2（20）；1 自定义一个TYPE使用VARRA

2009-08-10 11:50:00 4305

原创 windows服务的操作

删除服务办法一：用sc.exe这个Windows命令开始——运行——cmd.exe，然后输入sc就可以看到了。使用办法很简单： sc delete "服务名" (如果服务名中间有空格，就需要前后加引号）如针对上面的： sc delete KSD2Service 方法二：直接进行注册表编辑（不推荐）

2009-08-10 11:46:00 496

转载 oracle字段类型

Char 用于描述定长的字符型数据，长度varchar2 用于描述变长的字符型数据，长度nchar 用来存储Unicode字符集的定长字符型数据，长度nvarchar2 用来存储Unicode字符集的变长字符型数据，长度number 用来存储整型或者浮点型数值 Date 用来存储日期数据 Long 用来存储最大长度为2GB的变长字符数据 Raw 用来存储非结构化数据的变

2009-08-05 10:18:00 1849

原创 Interpreter

In computer programming, the interpreter pattern is a particular design pattern. The interpreter pattern specifies how to evaluate sentences in a language. The basic idea is to have a class for each

2009-07-30 10:20:00 644

原创 Command

The command pattern is a design pattern in which an object is used to represent and encapsulateall the information needed to call a method at a later time. Thisinformation includes the metho

2009-07-29 10:32:00 613

原创 Java调试断点不起作用的解决办法

eclipse中 window->preference->debug->Debugger timeout 设大一点

2009-07-21 16:41:00 10227 1

原创 Chain of Responsibility

In Object Oriented Design, the chain-of-responsibility pattern is a design pattern consisting of a source of command objects and a series of processing objects.Each processing object contains

2009-07-21 14:19:00 726

原创 SUMMARY OF STRUCTURAL PATTERNS

The Adapter pattern, used to change the interface of one class to that ofanother one.The Bridge pattern, intended to keep the interface to your client programconstant while allowing you to c

2009-07-20 11:57:00 426

原创 Proxy

The Proxy pattern is used when you need to represent a complexobject by a simpler one. If creating an object is expensive in time or computerresources, Proxy allows you to postpone this creation

2009-07-20 11:52:00 631

转载 getRealPath()过期解决方法

request.getRealPath("") 这个方法已经不推荐使用了，那代替它的是什么方法呢？下面就是替代它的方法：request.getSession().getServletContext().getRealPath() 得到站点的绝对地址在servlet或者struts中还可以这样：this.getServletContext().getRealPath("/

2009-07-15 16:01:00 4592

转载 J2ME中的文件读写问题

理论[file:///] 或者 [file://localhost/] 表示模拟器的根目录地址WTK2.5.1根目录为C:/Documents and Settings/Administrator/j2mewtk/2.5.2/appdb/DefaultColorPhone/filesystem问题if( System.getPropert

2009-07-15 11:59:00 4908

原创 J2ME FileConnector相关暂不理解

J2ME实现手机图片上传的小经验http://www.yustu.com/?viewnews-55067.htmlJ2ME可选包FileConnection开发入门http://www.yesky.com/319/1935819.shtml 建议先使用如下方法获取根目录列表 public String[] DeviceGetRoots() { Enumera

2009-07-15 11:55:00 507

转载文件转换为字节数组

/** * 文件转化为字节数组 * * @param file * @return */ public static byte[] getBytesFromFile(File file) { byte[] ret = null; try { if (file ==

2009-07-15 11:51:00 787

转载 j2me上传文件的问题

客户端:sc = (HttpConnection)Connector.open( url, Connector.READ_WRITE, true );sc.setRequestMethod( HttpConnection.POST );sc.setRequestProperty("Content-Type", "application/x-www-form-urlencoded")

2009-07-15 11:49:00 695

原创 J2ME 文件上传实例(FileConnector链接文件系统，非RMS)

客户端：import java.io.InputStream;import java.io.OutputStream;import java.io.ByteArrayOutputStream;import javax.microedition.io.*;import javax.microedition.midlet.MIDlet;import javax.microedi

2009-07-15 11:03:00 673

原创 J2ME版HttpConnect

import java.io.DataInputStream;import javax.microedition.midlet.MIDlet;import javax.microedition.midlet.MIDletStateChangeException;import javax.microedition.io.*;public class HttpConnect ext

2009-07-10 17:36:00 581

原创 J2ME工程中.jad问题

工程名必须与jad文件名一致

2009-07-10 09:40:00 536

原创 Flyweight

The term comes from the boxing weight classwith the same name. Often some parts of the object state can be sharedand its common to put them in external data structures and pass themto the flywe

2009-07-09 16:52:00 677

原创 Facade

The facade pattern is a software engineering design pattern commonly used with Object-oriented programming.A facade is an object that provides a simplified interface to a larger body of code, such

2009-07-02 11:22:00 762

原创用MYSQL创建utf-8格式的数据库

mysql>Create DATABASE IF NOT EXISTS my_db default charset utf8 COLLATE utf8_general_ci; #my_db:是要创建的数据库#注意后面这句话 “COLLATE utf8_general_ci“,大致意思是在排序时根据utf8编码格式来排序 #那么在这个数据库下创建的所有数据表的默认字符集都会是ut

2009-07-01 17:50:00 8530

原创 gang of four resources

Download:The gang of four patterns in LePUS3 (Visio 2003 format)The gang of four patterns in UML (Visio 2003 format)

2009-07-01 15:24:00 685

原创 Decorator

<v:shapetype id="_x0000_t74" coordsize="21600,21600" o:spt="74" path="m10860,2187c10451,1746,9529,1018,9015,730,7865,152,6685,,5415,,4175,152,2995,575,1967,1305,1150,2187,575,3222,242,4220,,5410,242

2009-07-01 15:18:00 640

原创 Decorator

In object-oriented programming, the decorator pattern is a design pattern that allows new/additional behaviour to be added to an existing class dynamically. Introduction The decorator pattern can be used to make it possible to extend (de

2009-07-01 15:06:00 405

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symbian cpp ui小例子

需求分析 参考文件 模板

C++ GUI Programming with QT4第二版

嵌入式算法课件1－3声音图片dsp加密

structs bbs

蓝海微芯2410手册及bios烧写手册

servlet例子 写多少字才允许上传

js 右键菜单

空空如也

需求分析参考文件模板

servlet例子写多少字才允许上传