Asp.Net將字符串轉(zhuǎn)為&#區(qū)碼位編碼，或者將&#區(qū)碼位編碼字符串轉(zhuǎn)為對(duì)應(yīng)的字符串內(nèi)容。

&#數(shù)字;這種編碼其實(shí)就是將單個(gè)字符轉(zhuǎn)為對(duì)應(yīng)的區(qū)碼位（數(shù)字），然后區(qū)碼位前綴加上“&#”，后綴加上“;”組成，對(duì)于這種編碼的字符串，瀏覽器會(huì)自動(dòng)解析為對(duì)應(yīng)的字符。

Asp.Net字符串和&#編碼轉(zhuǎn)換源代碼和測(cè)試代碼如下:

01 using System;

02 using System.Text.RegularExpressions;

03 public partial class purchase_property : System.Web.UI.Page

04 {

05 /// <summary>

06 /// Asp.Net將字符串轉(zhuǎn)為16進(jìn)制區(qū)碼位&#編碼

07 /// </summary>

08 /// <param name="s">要進(jìn)行16進(jìn)制區(qū)碼位編碼的字符串</param>

09 /// <returns>編碼后的16進(jìn)制區(qū)碼位&#字符串</returns>

10 public string StringToUnicodeCodeBit(string s)

11 {

12 if (string.IsNullOrEmpty(s) || s.Trim() == "") return "";

13 string r = "";

14 for (int i = 0; i < s.Length; i++) r += "&#" + ((int)s[i]).ToString() + ";";

15 return r;

16 }

17 public string reMatchEvaluator(Match m)

18 {

19 return ((char)int.Parse(m.Groups[1].Value)).ToString();

20 }

21 /// <summary>

22 /// Asp.Net將16進(jìn)制區(qū)碼位&#編碼轉(zhuǎn)為對(duì)應(yīng)的字符串

23 /// </summary>

24 /// <param name="s">16進(jìn)制區(qū)碼位編碼的字符串</param>

25 /// <returns>16進(jìn)制區(qū)碼位編碼的字符串對(duì)應(yīng)的字符串</returns>

26 public string UnicodeCodeBitToString(string s)

27 {

28 if (string.IsNullOrEmpty(s) || s.Trim() == "") return "";

29 Regex rx = new Regex(@"&#(\d+);", RegexOptions.Compiled);

30 return rx.Replace(s, reMatchEvaluator);

31 }

32 protected void Page_Load(object sender, EventArgs e)

33 {

34 string s = "Asp.Net區(qū)碼位字符串";

35 s = StringToUnicodeCodeBit(s);//轉(zhuǎn)為&#編碼

36 Response.Write(s);

37 Response.Write("\n");

38 s = UnicodeCodeBitToString(s);//&#編碼轉(zhuǎn)為字符串

39 Response.Write(s);

40 }

41 }

javascript版本可以參考下面：

01 function uncode(str) {//把&#編碼轉(zhuǎn)換成字符

02 return str.replace(/&#(x)?([^&]{1,5});?/g, function (a, b, c) {

03 return String.fromCharCode(parseInt(c, b ? 16 : 10));

04 });

05 }

06 function encode(str) {//把字符轉(zhuǎn)換成&#編碼

07 var a = [], i = 0;

08 for (; i < str.length; ) a[i] = str.charCodeAt(i++);

09 return "&#" + a.join(";&#") + ";";

10 }

更多信息請(qǐng)查看IT技術(shù)專(zhuān)欄