📅  最后修改于: 2020-11-15 03:42:02             🧑  作者: Mango
在Java中,文本内部以Unicode格式存储。如果输入/输出格式不同,则需要转换。
以下示例将展示将Unicode字符串转换为UTF8字节[],并将UTF8字节[]转换为Unicode字节[]。
IOTester.java
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.text.ParseException;
public class I18NTester {
public static void main(String[] args) throws ParseException, UnsupportedEncodingException {
String unicodeString = "\u00C6\u00D8\u00C5" ;
//convert Unicode to UTF8 format
byte[] utf8Bytes = unicodeString.getBytes(Charset.forName("UTF-8"));
printBytes(utf8Bytes, "UTF 8 Bytes");
//convert UTF8 format to Unicode
String converted = new String(utf8Bytes, "UTF8");
byte[] unicodeBytes = converted.getBytes();
printBytes(unicodeBytes, "Unicode Bytes");
}
public static void printBytes(byte[] array, String name) {
for (int k = 0; k < array.length; k++) {
System.out.println(name + "[" + k + "] = " + array[k]);
}
}
}
它将打印以下结果。
UTF 8 Bytes[0] = -61
UTF 8 Bytes[1] = -122
UTF 8 Bytes[2] = -61
UTF 8 Bytes[3] = -104
UTF 8 Bytes[4] = -61
UTF 8 Bytes[5] = -123
Unicode Bytes[0] = -58
Unicode Bytes[1] = -40
Unicode Bytes[2] = -59