Flash 如何在AS3中解码utf8字符串？
我的AS3 Flash加载了一些JSON文件，其中包含一些特殊字符：Flash 如何在AS3中解码utf8字符串？,flash,actionscript-3,utf-8,Flash,Actionscript 3,Utf 8,我的AS3 Flash加载了一些JSON文件，其中包含一些特殊字符： quelques caract\\u00e8res sp\\u00e9ciaux（更新） 在使用了一些str\u replace（'\\\'，'\\'，myVar）之后，我确实去掉了双斜杠，但它仍然不会显示为重音 有没有办法在AS3中解码这个字符串（getbacké，èchars…） 谢谢 我将unescape函数从代码中提取到一个helper类中 public class StringHelper { /**
quelques caract\\u00e8res sp\\u00e9ciauxstr\u replace（'\\\'，'\\'，myVar）谢谢 我将unescape函数从代码中提取到一个helper类中
public class StringHelper
{
/**
* Convert all JavaScript escape characters into normal characters
*
* @param input The input string to convert
* @return Original string with escape characters replaced by real characters
*/
public static function unescapeString( input:String ):String
{
var result:String = "";
var backslashIndex:int = 0;
var nextSubstringStartPosition:int = 0;
var len:int = input.length;
do
{
// Find the next backslash in the input
backslashIndex = input.indexOf( '\\', nextSubstringStartPosition );
if ( backslashIndex >= 0 )
{
result += input.substr( nextSubstringStartPosition, backslashIndex - nextSubstringStartPosition );
// Move past the backslash and next character (all escape sequences are
// two characters, except for \u, which will advance this further)
nextSubstringStartPosition = backslashIndex + 2;
// Check the next character so we know what to escape
var escapedChar:String = input.charAt( backslashIndex + 1 );
switch ( escapedChar )
{
// Try to list the most common expected cases first to improve performance
case '"':
result += escapedChar;
break; // quotation mark
case '\\':
result += escapedChar;
break; // reverse solidus
case 'n':
result += '\n';
break; // newline
case 'r':
result += '\r';
break; // carriage return
case 't':
result += '\t';
break; // horizontal tab
// Convert a unicode escape sequence to it's character value
case 'u':
// Save the characters as a string we'll convert to an int
var hexValue:String = "";
var unicodeEndPosition:int = nextSubstringStartPosition + 4;
// Make sure there are enough characters in the string leftover
if ( unicodeEndPosition > len )
{
parseError( "Unexpected end of input. Expecting 4 hex digits after \\u." );
}
// Try to find 4 hex characters
for ( var i:int = nextSubstringStartPosition; i < unicodeEndPosition; i++ )
{
// get the next character and determine
// if it's a valid hex digit or not
var possibleHexChar:String = input.charAt( i );
if ( !isHexDigit( possibleHexChar ) )
{
parseError( "Excepted a hex digit, but found: " + possibleHexChar );
}
// Valid hex digit, add it to the value
hexValue += possibleHexChar;
}
// Convert hexValue to an integer, and use that
// integer value to create a character to add
// to our string.
result += String.fromCharCode( parseInt( hexValue, 16 ) );
// Move past the 4 hex digits that we just read
nextSubstringStartPosition = unicodeEndPosition;
break;
case 'f':
result += '\f';
break; // form feed
case '/':
result += '/';
break; // solidus
case 'b':
result += '\b';
break; // bell
default:
result += '\\' + escapedChar; // Couldn't unescape the sequence, so just pass it through
}
}
else
{
// No more backslashes to replace, append the rest of the string
result += input.substr( nextSubstringStartPosition );
break;
}
} while ( nextSubstringStartPosition < len );
return result;
}
/**
* Determines if a character is a digit [0-9].
*
* @return True if the character passed in is a digit
*/
private static function isDigit( ch:String ):Boolean
{
return ( ch >= '0' && ch <= '9' );
}
/**
* Determines if a character is a hex digit [0-9A-Fa-f].
*
* @return True if the character passed in is a hex digit
*/
private static function isHexDigit( ch:String ):Boolean
{
return ( isDigit( ch ) || ( ch >= 'A' && ch <= 'F' ) || ( ch >= 'a' && ch <= 'f' ) );
}
/**
* Raises a parsing error with a specified message, tacking
* on the error location and the original string.
*
* @param message The message indicating why the error occurred
*/
private static function parseError( message:String ):void
{
throw new Error( message );
}
}
我将unescape函数从代码中提取到一个helper类中
public class StringHelper
{
/**
* Convert all JavaScript escape characters into normal characters
*
* @param input The input string to convert
* @return Original string with escape characters replaced by real characters
*/
public static function unescapeString( input:String ):String
{
var result:String = "";
var backslashIndex:int = 0;
var nextSubstringStartPosition:int = 0;
var len:int = input.length;
do
{
// Find the next backslash in the input
backslashIndex = input.indexOf( '\\', nextSubstringStartPosition );
if ( backslashIndex >= 0 )
{
result += input.substr( nextSubstringStartPosition, backslashIndex - nextSubstringStartPosition );
// Move past the backslash and next character (all escape sequences are
// two characters, except for \u, which will advance this further)
nextSubstringStartPosition = backslashIndex + 2;
// Check the next character so we know what to escape
var escapedChar:String = input.charAt( backslashIndex + 1 );
switch ( escapedChar )
{
// Try to list the most common expected cases first to improve performance
case '"':
result += escapedChar;
break; // quotation mark
case '\\':
result += escapedChar;
break; // reverse solidus
case 'n':
result += '\n';
break; // newline
case 'r':
result += '\r';
break; // carriage return
case 't':
result += '\t';
break; // horizontal tab
// Convert a unicode escape sequence to it's character value
case 'u':
// Save the characters as a string we'll convert to an int
var hexValue:String = "";
var unicodeEndPosition:int = nextSubstringStartPosition + 4;
// Make sure there are enough characters in the string leftover
if ( unicodeEndPosition > len )
{
parseError( "Unexpected end of input. Expecting 4 hex digits after \\u." );
}
// Try to find 4 hex characters
for ( var i:int = nextSubstringStartPosition; i < unicodeEndPosition; i++ )
{
// get the next character and determine
// if it's a valid hex digit or not
var possibleHexChar:String = input.charAt( i );
if ( !isHexDigit( possibleHexChar ) )
{
parseError( "Excepted a hex digit, but found: " + possibleHexChar );
}
// Valid hex digit, add it to the value
hexValue += possibleHexChar;
}
// Convert hexValue to an integer, and use that
// integer value to create a character to add
// to our string.
result += String.fromCharCode( parseInt( hexValue, 16 ) );
// Move past the 4 hex digits that we just read
nextSubstringStartPosition = unicodeEndPosition;
break;
case 'f':
result += '\f';
break; // form feed
case '/':
result += '/';
break; // solidus
case 'b':
result += '\b';
break; // bell
default:
result += '\\' + escapedChar; // Couldn't unescape the sequence, so just pass it through
}
}
else
{
// No more backslashes to replace, append the rest of the string
result += input.substr( nextSubstringStartPosition );
break;
}
} while ( nextSubstringStartPosition < len );
return result;
}
/**
* Determines if a character is a digit [0-9].
*
* @return True if the character passed in is a digit
*/
private static function isDigit( ch:String ):Boolean
{
return ( ch >= '0' && ch <= '9' );
}
/**
* Determines if a character is a hex digit [0-9A-Fa-f].
*
* @return True if the character passed in is a hex digit
*/
private static function isHexDigit( ch:String ):Boolean
{
return ( isDigit( ch ) || ( ch >= 'A' && ch <= 'F' ) || ( ch >= 'a' && ch <= 'f' ) );
}
/**
* Raises a parsing error with a specified message, tacking
* on the error location and the original string.
*
* @param message The message indicating why the error occurred
*/
private static function parseError( message:String ):void
{
throw new Error( message );
}
}
trace（'quelques-caract\u00c3\u00a8res-sp\u00c3\u00a9ciaux'）显示您需要的内容，因此它在默认情况下工作
upd:
private-var-escapedDict:Object={'n'：'\n'，'r'：'\r'，'t'：'\t'，'f'：'\f'，'b'：'\b'，''：'\'，'''：''''\'：''''\'，''''''：'\'''''''''\'.'：'}；
私有函数unDoubleEscape（src:String）：String{
var arr:Array=src.split（'\\'）；
对于（变量i:int=1；i
跟踪（'quelques-caract\u00c3\u00a8res-sp\u00c3\u00a9ciaux'）显示您需要的内容，因此它在默认情况下工作
upd:
private-var-escapedDict:Object={'n'：'\n'，'r'：'\r'，'t'：'\t'，'f'：'\f'，'b'：'\b'，''：'\'，'''：''''\'：''''\'，''''''：'\'''''''''\'.'：'}；
私有函数unDoubleEscape（src:String）：String{
var arr:Array=src.split（'\\'）；
对于（变量i:int=1；i
没有，我使用的是myTextField.htmlText=…&我在屏幕上看到“test-caract\\u00e8re”。@olouv-尝试myTextField.text=…
或myTextField.htmlText=String（…）
。跟踪（…）
返回什么？我需要htmlText特性，所以我不能使用.text；跟踪返回“test caract\\u00e8re”；字符串不能解决这个问题。这两条斜线正常吗？似乎我应该使用一些带斜线或类似的东西，不是吗？@olouv-你肯定需要单斜线（如你的问题和我的回答中所示）我做了一些str\u替换（“\\\\”，“\\\”，…）
，我确实在跟踪中得到了donn\u00e9es
。。。（单破折号）。。。但仍然没有特别的角色！如果我跟踪（'\u00e9'），我会得到！没有，我使用的是myTextField.htmlText=…&我在屏幕上看到“test-caract\\u00e8re”。@olouv-尝试myTextField.text=…
或myTextField.htmlText=String（…）
。跟踪（…）
返回什么？我需要htmlText特性，所以我不能使用.text；跟踪返回“test caract\\u00e8re”；字符串不能解决这个问题。这两条斜线正常吗？似乎我应该使用一些带斜线或类似的东西，不是吗？@olouv-你肯定需要单斜线（如你的问题和我的回答中所示）我做了一些str\u替换（“\\\\”，“\\\”，…）
，我确实在跟踪中得到了donn\u00e9es
。。。（单破折号）。。。但仍然没有特别的角色！如果我跟踪（'\u00e9'），我会得到！
private var escapedDict:Object = { 'n' : '\n', 'r' : '\r', 't' : '\t', 'f' : '\f', 'b' : '\b', '"' : '\"', "'" : '\'', '\\' : ''};
private function unDoubleEscape(src:String):String {
var arr:Array = src.split('\\');
for (var i:int = 1; i < arr.length; i++) {
if (arr[i].charAt(0) != 'u') {
arr[i] = escapedDict[arr[i].charAt(0)] ? escapedDict[arr[i].charAt(0)] + arr[i].substr(1) : arr[i];
}else {
arr[i] = String.fromCharCode('0x' + arr[i].slice(1, 5)) + arr[i].substr(5);
}
}
return arr.join('');
}