String漢字コンテンツ符号化フォーマット変換

文字変換テスト:

package a;

public class TestCharset {
    public static void main(String[] args) throws Exception {

        String str = " renmin";
        String str1 = new String(str.getBytes(), ChangeCharset.UTF_8);
        String str3 = new String(str1.getBytes(), ChangeCharset.GBK);
        String str2 = new String(str.getBytes(), ChangeCharset.GBK);
        String str4 = new String(str2.getBytes(), ChangeCharset.UTF_8);
        String str5 = new String(str4);
        String str6 = new String(str4.getBytes(), ChangeCharset.GBK);

        System.out.println(str + " str                    " + bytesToHexString(str));
        System.out.println(str1 + " str utf8               " + bytesToHexString(str1));
        System.out.println(str3 + " str utf8 gbk           " + bytesToHexString(str3));
        System.out.println(str2 + " str gbk                " + bytesToHexString(str2));
        System.out.println(str4 + " str gbk utf8           " + bytesToHexString(str4));
        System.out.println(str5 + " new (str gbk utf8)     " + bytesToHexString(str5));
        System.out.println(str6 + " new (str gbk utf8) gbk " + bytesToHexString(str6));

        prt(str + " str                    ", str.getBytes());
        prt(str1 + " str utf8               ", str1.getBytes());
        prt(str3 + " str utf8 gbk           ", str3.getBytes());
        prt(str2 + " str gbk                ", str2.getBytes());
        prt(str4 + " str gbk utf8           ", str4.getBytes());
        prt(str5 + " new (str gbk utf8)     ", str5.getBytes());
        prt(str6 + " new (str gbk utf8) gbk ", str5.getBytes());

    }

    private static String bytesToHexString(String str) {
        byte[] src = str.getBytes();
        StringBuilder stringBuilder = new StringBuilder("");
        if (src == null || src.length <= 0) {
            return null;
        }
        for (byte element : src) {
            int v = element & 0xFF;
            String hv = Integer.toHexString(v);
            if (hv.length() < 2) {
                stringBuilder.append(0);
            }
            stringBuilder.append(hv);
        }
        return stringBuilder.toString();
    }

    private static void prt(String str, byte[] bs) {
        System.out.print("
 " + str);
        for (byte b : bs) {
            System.out.print(b + "  ");
        }
    }
}

 
結果:

 renmin str                    d6d0b9fa72656e6d696e
?й?renmin str utf8               3fa7db3f72656e6d696e
?й?renmin str utf8 gbk           3fa7db3f72656e6d696e
 renmin str gbk                d6d0b9fa72656e6d696e
?й?renmin str gbk utf8           3fa7db3f72656e6d696e
?й?renmin new (str gbk utf8)     3fa7db3f72656e6d696e
?й?renmin new (str gbk utf8) gbk 3fa7db3f72656e6d696e

  renmin str                    -42  -48  -71  -6  114  101  110  109  105  110  
 ?й?renmin str utf8               63  -89  -37  63  114  101  110  109  105  110  
 ?й?renmin str utf8 gbk           63  -89  -37  63  114  101  110  109  105  110  
  renmin str gbk                -42  -48  -71  -6  114  101  110  109  105  110  
 ?й?renmin str gbk utf8           63  -89  -37  63  114  101  110  109  105  110  
 ?й?renmin new (str gbk utf8)     63  -89  -37  63  114  101  110  109  105  110  
 ?й?renmin new (str gbk utf8) gbk 63  -89  -37  63  114  101  110  109  105  110  

 
 
結論:
1、中国語のStringデフォルト符号化フォーマット:GBK
2、GBKからUTF-8への移行に成功した(正しい符号化からエラー符号化への移行に成功した)
3、UTF-8からGBKへの移行に失敗(エラー符号化から正しい符号化への移行に失敗)
4、漢字コンテンツ符号化フォーマット変換後の異常表示
 
 
討論を歓迎する.