我有一个字符串,其中包含一个字符 � 我无法正确替换它。
String.replace("�", "");
不起作用,有谁知道如何删除/替换字符串中的�?
那是 Unicode 替换字符,\uFFFD。(资料)
像这样的东西应该工作:
String strImport = "For some reason my �double quotes� were lost.";
strImport = strImport.replaceAll("\uFFFD", "\"");
Character issues like this are difficult to diagnose because information is easily lost through misinterpretation of characters via application bugs, misconfiguration, cut'n'paste, etc.
As I (and apparently others) see it, you've pasted three characters:
codepoint glyph escaped windows-1252 info
=======================================================================
U+00ef ï \u00ef ef, LATIN_1_SUPPLEMENT, LOWERCASE_LETTER
U+00bf ¿ \u00bf bf, LATIN_1_SUPPLEMENT, OTHER_PUNCTUATION
U+00bd ½ \u00bd bd, LATIN_1_SUPPLEMENT, OTHER_NUMBER
To identify the character, download and run the program from this page. Paste your character into the text field and select the glyph mode; paste the report into your question. It'll help people identify the problematic character.
您要求替换字符“�”,但对我来说,这是三个字符“ï”、“¿”和“½”。这可能是您的问题...如果您使用的是 Java 1.5 之前的 Java,那么您只能获得 UCS-2 字符,即前 65K UTF-8 字符。根据其他评论,您要查找的字符很可能是“�”,即 Unicode 替换字符。这是“用于替换其值在 Unicode 中未知或无法表示的传入字符”的字符。
实际上,查看 Kathy 的评论,您可能遇到的另一个问题是 javac 没有将您的 .java 文件解释为 UTF-8,假设您使用 UTF-8 编写它。尝试使用:
javac -encoding UTF-8 xx.java
或者,修改您的源代码以执行以下操作:
String.replaceAll("\uFFFD", "");
正如其他人所说,您发布了 3 个字符而不是 1 个字符。我建议您运行这段代码来查看字符串中的实际内容:
public static void dumpString(String text)
{
for (int i=0; i < text.length(); i++)
{
System.out.println("U+" + Integer.toString(text.charAt(i), 16)
+ " " + text.charAt(i));
}
}
如果您发布结果,将更容易弄清楚发生了什么。(我没有费心填充字符串 - 我们可以通过检查来做到这一点......)
profilage bas� sur l'analyse de l'esprit
(法语)
应译为:
profilage basé sur l'analyse de l'esprit
所以,在这种情况下�
=é
解析时将编码更改为 UTF-8。这将删除特殊字符
import java.io.UnsupportedEncodingException;
/**
* File: BOM.java
*
* check if the bom character is present in the given string print the string
* after skipping the utf-8 bom characters print the string as utf-8 string on a
* utf-8 console
*/
public class BOM
{
private final static String BOM_STRING = "Hello World";
private final static String ISO_ENCODING = "ISO-8859-1";
private final static String UTF8_ENCODING = "UTF-8";
private final static int UTF8_BOM_LENGTH = 3;
public static void main(String[] args) throws UnsupportedEncodingException {
final byte[] bytes = BOM_STRING.getBytes(ISO_ENCODING);
if (isUTF8(bytes)) {
printSkippedBomString(bytes);
printUTF8String(bytes);
}
}
private static void printSkippedBomString(final byte[] bytes) throws UnsupportedEncodingException {
int length = bytes.length - UTF8_BOM_LENGTH;
byte[] barray = new byte[length];
System.arraycopy(bytes, UTF8_BOM_LENGTH, barray, 0, barray.length);
System.out.println(new String(barray, ISO_ENCODING));
}
private static void printUTF8String(final byte[] bytes) throws UnsupportedEncodingException {
System.out.println(new String(bytes, UTF8_ENCODING));
}
private static boolean isUTF8(byte[] bytes) {
if ((bytes[0] & 0xFF) == 0xEF &&
(bytes[1] & 0xFF) == 0xBB &&
(bytes[2] & 0xFF) == 0xBF) {
return true;
}
return false;
}
}
使用unicode 转义序列。首先,您必须找到要替换的字符的代码点(假设它是十六进制的 ABCD):
str = str.replaceAll("\uABCD", "");
剖析 URL 代码和 unicode 错误。这个符号也出现在谷歌翻译的亚美尼亚文字中,有时是破碎的缅甸文字。
以上答案没有解决我的问题。当我下载 xml 时,它会附加<xml
到我的 xml 中。我只是
xml = parser.getXmlFromUrl(url);
xml = xml.substring(3);// it remove first three character from string,
现在它正在准确运行。