摘要: 上次出去幫一個朋友的朋友給一個原有的.net項目添加一個新的功能模塊。結(jié)果，很傷，原因很簡單，由于我對dotnet的工作機理想當然，個人觀點占據(jù)上風，導致在初期設(shè)計的時候就走上了一天錯誤的道路，郁悶了很長一段時間，決定花一定時間去真正理解一些更底層，更基礎(chǔ)的東西。現(xiàn)在忽然發(fā)現(xiàn)自己在過去很長的一段時間有些舍本逐末了，檢討~~~~
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posted @
2009-05-27 11:38 moonandsun 閱讀(420) |
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編輯 收藏web2.0這個名詞不止一次的在我眼前出現(xiàn)，有時候由于它的出現(xiàn)過于頻繁，以至于我還沒來得及去想，已漸漸的在內(nèi)心中接受了這個名詞。初識web2.0是在去年，具體什么時候已記不太清楚，當初我腦海中的web2.0和我現(xiàn)在的認識不盡相同，我當時的認識只是web2.0的一個方面，甚至可以說與我們所說的web2.0不相關(guān)。當時我和我的幾個師兄在一起做一個web項目，當然他們常常會提到web2.0標準，起初我不是很理解，當然現(xiàn)在也依然模糊。從網(wǎng)上在了點資料。網(wǎng)上如是說：WEB2.0標準不是某一個標準，而是一系列標準的集合。網(wǎng)頁主要由三部分組成：結(jié)構(gòu)（Structure）、表現(xiàn)（Presentation）和行為（Behavior）。對應(yīng)的標準也分三方面：結(jié)構(gòu)化標準語言主要包括XHTML和XML，表現(xiàn)標準語言主要包括CSS，行為標準主要包括對象模型（如W3C DOM）、ECMAScript等。這些標準大部分由W3C起草和發(fā)布，也有一些是其他標準組織制訂的標準，比如ECMA（European Computer Manufacturers Association）的ECMAScript標準。恍然大明白，原來自己在很長一段時間都在為web2.0標準努力。不由暗暗自喜。后來，每次上網(wǎng)，看雜志（尤其程序員），看報紙（電腦報），web2.0的字眼是滿天飛。既然自己要考研，并且準備在計算機方面發(fā)展，我認為有必要了解web2.0。
web2.0是相對于web1.0來說的. 首先就易用性和交互性方面來說，Web1.0里，互聯(lián)網(wǎng)內(nèi)容是由少數(shù)編輯人員（或站長）定制的，比如搜狐；而在Web2.0里，每個人都是內(nèi)容的供稿者。標由于web2.0主張多然參與，所以互聯(lián)網(wǎng)內(nèi)容也更加豐富和多樣化，同時web2.0采用了標簽（tag），多媒體技術(shù)，rss訂閱，在線協(xié)作等功能，用戶在使用互聯(lián)網(wǎng)的過程也更方便、快捷。就我的一個上網(wǎng)習慣來說，我關(guān)注最多的是IT技術(shù)方面的發(fā)展，一般我經(jīng)常去csdn,cnblogs,itpub等網(wǎng)站，以前我看文章都是一個網(wǎng)站一個網(wǎng)站的打開，有時候發(fā)現(xiàn)某個人的博客很適合自己的口味，于是想關(guān)注這位博主的最新動態(tài)，于是收藏的網(wǎng)址越來越多，每天想把自己關(guān)注的事情看一遍很費時間。現(xiàn)在可不一樣了，發(fā)現(xiàn)自己的喜歡網(wǎng)站或博客，訂閱到自己的google reader中，每天上網(wǎng)第一件事，打開google reader，有什么最新新聞，最新動態(tài)一目了然。都是互聯(lián)網(wǎng)提供的便利啊。
其次，web2.0相對于web1.0來說更突出人的作用，在互聯(lián)網(wǎng)的新時代，信息是由每個人貢獻出來的。各個人共同組成互聯(lián)網(wǎng)信息源。Web2.0的靈魂是人。同是，為了更好的發(fā)揮“人”的作用，web2.0的形式也更多樣化，出現(xiàn)了各種各樣的互聯(lián)網(wǎng)服務(wù)，例如博客、威客、播客、維基、P2P下載、社區(qū)、分享服務(wù)等等。是“人”能夠從互聯(lián)網(wǎng)上得到不同程度上的滿足。現(xiàn)如今，用戶即所謂的“人”所產(chǎn)生的信息在互聯(lián)網(wǎng)內(nèi)容中所占的比重越來越大，而且隨著web2.0的發(fā)展，這一趨勢還會不斷加強。web2.0為所有互聯(lián)網(wǎng)用戶提供了一個展示自我和自我實現(xiàn)的平臺。而且隨著互聯(lián)網(wǎng)技術(shù)的發(fā)展，web2.0在生活信息化、辦公信息化方面的作用也會一步步提升，是人們的生活、學習、工作更加便捷和輕松。
總之，web2.0從某種程度上改變了人們的生活。
posted @
2009-05-20 21:14 moonandsun 閱讀(166) |
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編輯 收藏 好長一段時間沒有寫日志，生活在繁忙中迷茫了一段，細細想來也不知道都干了些什么，于技術(shù)方面更是毫無長進，靜下心來下篇文章，安撫一下浮躁的心靈。
現(xiàn)在開始Maven2的學習。
第一步不用說，下載Maven2，以待安裝。
其實我們有必要了解Maven2到底是一個干么的東西，要使用它首先得知道它是干么的。
先看看ReadMe.txt
What is it?
-----------
Maven is a software project management and comprehension tool. Based on
the concept of a Project Object Model (POM), Maven can manage a project's
build, reporting and documentation from a central piece of information.
now we got it .it is a tool which can manage and comprehend our project .
系統(tǒng)需求，一般我們都能達到，忽略。
System Requirements
-------------------
JDK:
1.4 or above (this is to execute Maven - it still allows you to build against 1.3
and prior JDK's).
Memory:
No minimum requirement.
Disk:
No minimum requirement. Approximately 100MB will be used for your local repository,
however this will vary depending on usage and can be removed and redownloaded at
any time.
Operating System:
No minimum requirement. On Windows, Windows NT and above or Cygwin is required for
the startup scripts. Tested on Windows XP, Fedora Core and Mac OS X.s
下一步，安裝。我建議看看文檔。
Installing Maven
----------------
1) Unpack the archive where you would like to store the binaries, eg:
Unix-based Operating Systems (Linux, Solaris and Mac OS X)
tar zxvf apache-maven-2.0.x.tar.gz
Windows 2000/XP
unzip apache-maven-2.0.x.zip
2) A directory called "apache-maven-2.0.x" will be created.
3) Add the bin directory to your PATH, eg:
Unix-based Operating Systems (Linux, Solaris and Mac OS X)
export PATH=/usr/local/apache-maven-2.0.x/bin:$PATH
Windows 2000/XP
set PATH="c:\program files\apache-maven-2.0.x\bin";%PATH%
4) Make sure JAVA_HOME is set to the location of your JDK
我用的是winXP，看這句就可以了。
set PATH="c:\program files\apache-maven-2.0.x\bin";%PATH%
其中 “c:\program files\apache-maven-2.0.x\bin”為maven2解壓路徑。
最后一步測試一下是否成功。
5) Run "mvn --version" to verify that it is correctly installed.
OK，it works~~~
posted @
2009-05-05 22:10 moonandsun 閱讀(225) |
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十進制，八進制，十六進制，二進制相互轉(zhuǎn)換
' 用途：將十進制轉(zhuǎn)化為二進
' 輸入：Dec(十進制數(shù))
' 輸入數(shù)據(jù)類型：Long
' 輸出：DEC_to_BIN(二進制數(shù))
' 輸出數(shù)據(jù)類型：String
' 輸入的最大數(shù)為2147483647,輸出最大數(shù)為1111111111111111111111111111111(31個1)
Public Function DEC_to_BIN(Dec As Long) As String
DEC_to_BIN = ""
Do While Dec > 0
DEC_to_BIN = Dec Mod 2 & DEC_to_BIN
Dec = Dec \ 2
Loop
End Function
' 用途：將二進制轉(zhuǎn)化為十進制
' 輸入：Bin(二進制數(shù))
' 輸入數(shù)據(jù)類型：String
' 輸出：BIN_to_DEC(十進制數(shù))
' 輸出數(shù)據(jù)類型：Long
' 輸入的最大數(shù)為1111111111111111111111111111111(31個1),輸出最大數(shù)為2147483647
Public Function BIN_to_DEC(ByVal Bin As String) As Long
Dim i As Long
For i = 1 To Len(Bin)
BIN_to_DEC = BIN_to_DEC * 2 + Val(Mid(Bin, i, 1))
Next i
End Function
' 用途：將十六進制轉(zhuǎn)化為二進制
' 輸入：Hex(十六進制數(shù))
' 輸入數(shù)據(jù)類型：String
' 輸出：HEX_to_BIN(二進制數(shù))
' 輸出數(shù)據(jù)類型：String
' 輸入的最大數(shù)為2147483647個字符
Public Function HEX_to_BIN(ByVal Hex As String) As String
Dim i As Long
Dim B As String
Hex = UCase(Hex)
For i = 1 To Len(Hex)
Select Case Mid(Hex, i, 1)
Case "0": B = B & "0000"
Case "1": B = B & "0001"
Case "2": B = B & "0010"
Case "3": B = B & "0011"
Case "4": B = B & "0100"
Case "5": B = B & "0101"
Case "6": B = B & "0110"
Case "7": B = B & "0111"
Case "8": B = B & "1000"
Case "9": B = B & "1001"
Case "A": B = B & "1010"
Case "B": B = B & "1011"
Case "C": B = B & "1100"
Case "D": B = B & "1101"
Case "E": B = B & "1110"
Case "F": B = B & "1111"
End Select
Next i
While Left(B, 1) = "0"
B = Right(B, Len(B) - 1)
Wend
HEX_to_BIN = B
End Function
' 用途：將二進制轉(zhuǎn)化為十六進制
' 輸入：Bin(二進制數(shù))
' 輸入數(shù)據(jù)類型：String
' 輸出：BIN_to_HEX(十六進制數(shù))
' 輸出數(shù)據(jù)類型：String
' 輸入的最大數(shù)為2147483647個字符
Public Function BIN_to_HEX(ByVal Bin As String) As String
Dim i As Long
Dim H As String
If Len(Bin) Mod 4 <> 0 Then
Bin = String(4 - Len(Bin) Mod 4, "0") & Bin
End If
For i = 1 To Len(Bin) Step 4
Select Case Mid(Bin, i, 4)
Case "0000": H = H & "0"
Case "0001": H = H & "1"
Case "0010": H = H & "2"
Case "0011": H = H & "3"
Case "0100": H = H & "4"
Case "0101": H = H & "5"
Case "0110": H = H & "6"
Case "0111": H = H & "7"
Case "1000": H = H & "8"
Case "1001": H = H & "9"
Case "1010": H = H & "A"
Case "1011": H = H & "B"
Case "1100": H = H & "C"
Case "1101": H = H & "D"
Case "1110": H = H & "E"
Case "1111": H = H & "F"
End Select
Next i
While Left(H, 1) = "0"
H = Right(H, Len(H) - 1)
Wend
BIN_to_HEX = H
End Function
' 用途：將十六進制轉(zhuǎn)化為十進制
' 輸入：Hex(十六進制數(shù))
' 輸入數(shù)據(jù)類型：String
' 輸出：HEX_to_DEC(十進制數(shù))
' 輸出數(shù)據(jù)類型：Long
' 輸入的最大數(shù)為7FFFFFFF,輸出的最大數(shù)為2147483647
Public Function HEX_to_DEC(ByVal Hex As String) As Long
Dim i As Long
Dim B As Long
Hex = UCase(Hex)
For i = 1 To Len(Hex)
Select Case Mid(Hex, Len(Hex) - i + 1, 1)
Case "0": B = B + 16 ^ (i - 1) * 0
Case "1": B = B + 16 ^ (i - 1) * 1
Case "2": B = B + 16 ^ (i - 1) * 2
Case "3": B = B + 16 ^ (i - 1) * 3
Case "4": B = B + 16 ^ (i - 1) * 4
Case "5": B = B + 16 ^ (i - 1) * 5
Case "6": B = B + 16 ^ (i - 1) * 6
Case "7": B = B + 16 ^ (i - 1) * 7
Case "8": B = B + 16 ^ (i - 1) * 8
Case "9": B = B + 16 ^ (i - 1) * 9
Case "A": B = B + 16 ^ (i - 1) * 10
Case "B": B = B + 16 ^ (i - 1) * 11
Case "C": B = B + 16 ^ (i - 1) * 12
Case "D": B = B + 16 ^ (i - 1) * 13
Case "E": B = B + 16 ^ (i - 1) * 14
Case "F": B = B + 16 ^ (i - 1) * 15
End Select
Next i
HEX_to_DEC = B
End Function
' 用途：將十進制轉(zhuǎn)化為十六進制
' 輸入：Dec(十進制數(shù))
' 輸入數(shù)據(jù)類型：Long
' 輸出：DEC_to_HEX(十六進制數(shù))
' 輸出數(shù)據(jù)類型：String
' 輸入的最大數(shù)為2147483647,輸出最大數(shù)為7FFFFFFF
Public Function DEC_to_HEX(Dec As Long) As String
Dim a As String
DEC_to_HEX = ""
Do While Dec > 0
a = CStr(Dec Mod 16)
Select Case a
Case "10": a = "A"
Case "11": a = "B"
Case "12": a = "C"
Case "13": a = "D"
Case "14": a = "E"
Case "15": a = "F"
End Select
DEC_to_HEX = a & DEC_to_HEX
Dec = Dec \ 16
Loop
End Function
' 用途：將十進制轉(zhuǎn)化為八進制
' 輸入：Dec(十進制數(shù))
' 輸入數(shù)據(jù)類型：Long
' 輸出：DEC_to_OCT(八進制數(shù))
' 輸出數(shù)據(jù)類型：String
' 輸入的最大數(shù)為2147483647,輸出最大數(shù)為17777777777
Public Function DEC_to_OCT(Dec As Long) As String
DEC_to_OCT = ""
Do While Dec > 0
DEC_to_OCT = Dec Mod 8 & DEC_to_OCT
Dec = Dec \ 8
Loop
End Function
' 用途：將八進制轉(zhuǎn)化為十進制
' 輸入：Oct(八進制數(shù))
' 輸入數(shù)據(jù)類型：String
' 輸出：OCT_to_DEC(十進制數(shù))
' 輸出數(shù)據(jù)類型：Long
' 輸入的最大數(shù)為17777777777,輸出的最大數(shù)為2147483647
Public Function OCT_to_DEC(ByVal Oct As String) As Long
Dim i As Long
Dim B As Long
For i = 1 To Len(Oct)
Select Case Mid(Oct, Len(Oct) - i + 1, 1)
Case "0": B = B + 8 ^ (i - 1) * 0
Case "1": B = B + 8 ^ (i - 1) * 1
Case "2": B = B + 8 ^ (i - 1) * 2
Case "3": B = B + 8 ^ (i - 1) * 3
Case "4": B = B + 8 ^ (i - 1) * 4
Case "5": B = B + 8 ^ (i - 1) * 5
Case "6": B = B + 8 ^ (i - 1) * 6
Case "7": B = B + 8 ^ (i - 1) * 7
End Select
Next i
OCT_to_DEC = B
End Function
' 用途：將二進制轉(zhuǎn)化為八進制
' 輸入：Bin(二進制數(shù))
' 輸入數(shù)據(jù)類型：String
' 輸出：BIN_to_OCT(八進制數(shù))
' 輸出數(shù)據(jù)類型：String
' 輸入的最大數(shù)為2147483647個字符
Public Function BIN_to_OCT(ByVal Bin As String) As String
Dim i As Long
Dim H As String
If Len(Bin) Mod 3 <> 0 Then
Bin = String(3 - Len(Bin) Mod 3, "0") & Bin
End If
For i = 1 To Len(Bin) Step 3
Select Case Mid(Bin, i, 3)
Case "000": H = H & "0"
Case "001": H = H & "1"
Case "010": H = H & "2"
Case "011": H = H & "3"
Case "100": H = H & "4"
Case "101": H = H & "5"
Case "110": H = H & "6"
Case "111": H = H & "7"
End Select
Next i
While Left(H, 1) = "0"
H = Right(H, Len(H) - 1)
Wend
BIN_to_OCT = H
End Function
' 用途：將八進制轉(zhuǎn)化為二進制
' 輸入：Oct(八進制數(shù))
' 輸入數(shù)據(jù)類型：String
' 輸出：OCT_to_BIN(二進制數(shù))
' 輸出數(shù)據(jù)類型：String
' 輸入的最大數(shù)為2147483647個字符
Public Function OCT_to_BIN(ByVal Oct As String) As String
Dim i As Long
Dim B As String
For i = 1 To Len(Oct)
Select Case Mid(Oct, i, 1)
Case "0": B = B & "000"
Case "1": B = B & "001"
Case "2": B = B & "010"
Case "3": B = B & "011"
Case "4": B = B & "100"
Case "5": B = B & "101"
Case "6": B = B & "110"
Case "7": B = B & "111"
End Select
Next i
While Left(B, 1) = "0"
B = Right(B, Len(B) - 1)
Wend
OCT_to_BIN = B
End Function
' 用途：將八進制轉(zhuǎn)化為十六進制
' 輸入：Oct(八進制數(shù))
' 輸入數(shù)據(jù)類型：String
' 輸出：OCT_to_HEX(十六進制數(shù))
' 輸出數(shù)據(jù)類型：String
' 輸入的最大數(shù)為2147483647個字符
Public Function OCT_to_HEX(ByVal Oct As String) As String
Dim Bin As String
Bin = OCT_to_BIN(Oct)
OCT_to_HEX = BIN_to_HEX(Bin)
End Function
' 用途：將十六進制轉(zhuǎn)化為八進制
' 輸入：Hex(十六進制數(shù))
' 輸入數(shù)據(jù)類型：String
' 輸出：HEX_to_OCT(八進制數(shù))
' 輸出數(shù)據(jù)類型：String
' 輸入的最大數(shù)為2147483647個字符
Public Function HEX_to_OCT(ByVal Hex As String) As String
Dim Bin As String
Hex = UCase(Hex)
Bin = HEX_to_BIN(Hex)
HEX_to_OCT = BIN_to_OCT(Bin)
End Function
VB自帶函數(shù)：
十進制轉(zhuǎn)八進制：Oct(num)
十六進制轉(zhuǎn)八進制：oct("&H" & num)
十進制轉(zhuǎn)十六進制：hex(num)
八進制轉(zhuǎn)十六進制：hex("&O" & num)
十六進制轉(zhuǎn)換為十進制
Dim str As String
str = Text2.Text
Text10.Text = CLng("&H" & str)
文章出處：http://blog.programfan.com/article.asp?id=11903
感謝作者的無私奉獻、、、、
posted @
2009-03-29 10:57 moonandsun 閱讀(1466) |
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