java windows-1252 到 UTF-8
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windows-1252 to UTF-8
提问by Sharique
Below is the code I am trying to use, and the output it's giving me is:
下面是我尝试使用的代码，它给我的输出是：
RetValue: á, é, í, ó, ú, ü, ?, ? Value: á, é, í, ó, ú, ü, ?, ? ConvertValue: ?, ?, ?, ?, ?, ?, ?, ?
which is not the desired output. I think the output should be something of this kind %C3% for every character here.
这不是所需的输出。我认为这里的每个字符的输出都应该是这种 %C3% 。
public static void main(String[] args) {
String value = "á, é, í, ó, ú, ü, ?, ?";
String retValue = "";
String convertValue = "";
try {
retValue = new String(value.getBytes(),
Charset.forName("Windows-1252"));
convertValue = new String(retValue.getBytes("Windows-1252"),
Charset.forName("UTF-8"));
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("RetValue: " + retValue + " Value: " + value
+ " ConvertValue: " + convertValue);
}
回答by alainlompo
I understand that you are trying to encode your text from default encoding to Windows-1252, then to UTF-8.
我了解您正在尝试将文本从默认编码编码为 Windows-1252，然后编码为 UTF-8。
According to the javadoc for the Stringclass
根据String类的javadoc
String(byte[] bytes, Charset charset)Constructs a new String by decoding the specified array of bytes using the specified charset.
String(byte[] bytes, Charset charset)通过使用指定的字符集解码指定的字节数组来构造一个新的 String。
Therefore what you did was to decode a default encoded text into Windows-1252 and then further decode the newly obtained text into UTF-8. That's why it renders something abnormal.
因此，您所做的是将默认编码文本解码为 Windows-1252，然后将新获得的文本进一步解码为 UTF-8。这就是为什么它呈现异常的原因。
If your purpose is to encode from Windows-1252 to UTF-8, I would suggest that you use the following approach with CharsetEncoderin java.niopackage:
如果您的目的是将 Windows-1252 编码为 UTF-8，我建议您CharsetEncoder在java.nio包中使用以下方法：
public static void main(String[] args) {
String value = "á, é, í, ó, ú, ü, ?, ?";
String retValue = "";
String convertValue2 = "";
ByteBuffer convertedBytes = null;
try {
CharsetEncoder encoder2 = Charset.forName("Windows-1252").newEncoder();
CharsetEncoder encoder3 = Charset.forName("UTF-8").newEncoder();
System.out.println("value = " + value);
assert encoder2.canEncode(value);
assert encoder3.canEncode(value);
ByteBuffer conv1Bytes = encoder2.encode(CharBuffer.wrap(value.toCharArray()));
retValue = new String(conv1Bytes.array(), Charset.forName("Windows-1252"));
System.out.println("retValue = " + retValue);
convertedBytes = encoder3.encode(CharBuffer.wrap(retValue.toCharArray()));
convertValue2 = new String(convertedBytes.array(), Charset.forName("UTF-8"));
System.out.println("convertedValue =" + convertValue2);
} catch (Exception e) {
e.printStackTrace();
}
}
I obtained the following output:
我获得了以下输出：
value = á, é, í, ó, ú, ü, ?, ?
retValue = á, é, í, ó, ú, ü, ?, ?
convertedValue =á, é, í, ó, ú, ü, ?, ?
值 = á, é, í, ó, ú, ü, ?, ?
retValue = á, é, í, ó, ú, ü, ?, ?
转换值 =á, é, í, ó, ú, ü, ?, ?
