java不能正确地从拉丁语转换为utf8

我从mysql中选择数据，数据库不在utf8中（unicode字符保存为拉丁文，例如，Unicode字符串Đỗ Tiến（正确格式）保存为Äá»— Tiáº¿n）。如果我使用PHP来回应HTML，我只是设置<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />网页显示正确。如果我没有设置元标记，当由Chrome打开时，Chrome检测到的是windows-1258编码，手动更改为Unicode（utf-8），网页显示正确。java不能正确地从拉丁语转换为utf8

的问题是：当我使用JDBC从MySQL中选择数据I转换是这样的：

byte[] asciiBytes1 = "Äá»— tiáº¿n".getBytes("Cp1258"); 
    byte[] asciiBytes2 = "Äá»— tiáº¿n".getBytes("ISO-8859-1"); 
    String unicode1 = new String(asciiBytes1, "UTF-8"); 
    String unicode2 = new String(asciiBytes2, "UTF-8"); 
    System.out.println(unicode1);//�?ỗ tiến 
    System.out.println(unicode2);//Đ�? tiến

的结果，JAVA 不转换正确，我尝试在http://docs.oracle.com/javase/1.4.2/docs/guide/intl/encoding.doc.html很多编码，不仅Cp1258和ISO-8859-1，但没有任何作品。的2简单的方法来转换是使用HTML文件Äá»— tiáº¿n字符串作为我提到之前或使用记事本++，设定编码ANSI，粘贴Äá»— tiáº¿n串然后改变为UTF-8，它会显示Đỗ Tiến（被正确的字符串我想）

来源

2013-01-13 yelliver

这还挺复杂的，它在修改后的Windows 1252，其中0×81，0x8d，值为0x8F，0x90，在0x9d是正常未分配与各自的C1字符被替换。看起来Java在使用Windows-1252时默认没有考虑到这个问题。

修复你的数据库和在任何地方使用UTF-8是最简单的。

下面的代码反正

public static byte[] getBytesModifiedW1252(String str) { 
    final int[] windows1252 = { 
      0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007,0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F 
      ,0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F 
      ,0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027,0x0028,0x0029,0x002A,0x002B,0x002C,0x002D,0x002E,0x002F 
      ,0x0030,0x0031,0x0032,0x0033,0x0034,0x0035,0x0036,0x0037,0x0038,0x0039,0x003A,0x003B,0x003C,0x003D,0x003E,0x003F 
      ,0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047,0x0048,0x0049,0x004A,0x004B,0x004C,0x004D,0x004E,0x004F 
      ,0x0050,0x0051,0x0052,0x0053,0x0054,0x0055,0x0056,0x0057,0x0058,0x0059,0x005A,0x005B,0x005C,0x005D,0x005E,0x005F 
      ,0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067,0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F 
      ,0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077,0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F 
      ,0x20AC,0x0081,0x201A,0x0192,0x201E,0x2026,0x2020,0x2021,0x02C6,0x2030,0x0160,0x2039,0x0152,0x008D,0x017D,0x008F 
      ,0x0090,0x2018,0x2019,0x201C,0x201D,0x2022,0x2013,0x2014,0x02DC,0x2122,0x0161,0x203A,0x0153,0x009D,0x017E,0x0178 
      ,0x00A0,0x00A1,0x00A2,0x00A3,0x00A4,0x00A5,0x00A6,0x00A7,0x00A8,0x00A9,0x00AA,0x00AB,0x00AC,0x00AD,0x00AE,0x00AF 
      ,0x00B0,0x00B1,0x00B2,0x00B3,0x00B4,0x00B5,0x00B6,0x00B7,0x00B8,0x00B9,0x00BA,0x00BB,0x00BC,0x00BD,0x00BE,0x00BF 
      ,0x00C0,0x00C1,0x00C2,0x00C3,0x00C4,0x00C5,0x00C6,0x00C7,0x00C8,0x00C9,0x00CA,0x00CB,0x00CC,0x00CD,0x00CE,0x00CF 
      ,0x00D0,0x00D1,0x00D2,0x00D3,0x00D4,0x00D5,0x00D6,0x00D7,0x00D8,0x00D9,0x00DA,0x00DB,0x00DC,0x00DD,0x00DE,0x00DF 
      ,0x00E0,0x00E1,0x00E2,0x00E3,0x00E4,0x00E5,0x00E6,0x00E7,0x00E8,0x00E9,0x00EA,0x00EB,0x00EC,0x00ED,0x00EE,0x00EF 
      ,0x00F0,0x00F1,0x00F2,0x00F3,0x00F4,0x00F5,0x00F6,0x00F7,0x00F8,0x00F9,0x00FA,0x00FB,0x00FC,0x00FD,0x00FE,0x00FF 
     }; 
    Map<Integer, Integer> map = new HashMap<Integer, Integer>(); 

    for(int i = 0; i < windows1252.length; ++i) { 
     map.put(windows1252[i], i); 
    } 
    byte replacement = (byte)0x003F; 

    byte[] ret = new byte[str.length()]; 

    for(int i = 0; i < str.length(); ++i) { 
     int cp = str.charAt(i); 
     Integer w1252 = map.get(cp); 
     ret[i] = w1252 == null ? replacement : (byte)(int)w1252; 
    } 

    return ret; 
} 

public static void main(String args[]) throws UnsupportedEncodingException { 
    byte[] bytes = getBytesModifiedW1252("Äá»— tiáº¿n"); 
    System.out.println(new String(bytes, "UTF-8")); 
    //Đỗ tiến 
}

这里是相反的：

public static String getStringModifiedW1252(byte[] bytes) { 

    final int[] windows1252 = { 
      0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007,0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F 
      ,0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F 
      ,0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027,0x0028,0x0029,0x002A,0x002B,0x002C,0x002D,0x002E,0x002F 
      ,0x0030,0x0031,0x0032,0x0033,0x0034,0x0035,0x0036,0x0037,0x0038,0x0039,0x003A,0x003B,0x003C,0x003D,0x003E,0x003F 
      ,0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047,0x0048,0x0049,0x004A,0x004B,0x004C,0x004D,0x004E,0x004F 
      ,0x0050,0x0051,0x0052,0x0053,0x0054,0x0055,0x0056,0x0057,0x0058,0x0059,0x005A,0x005B,0x005C,0x005D,0x005E,0x005F 
      ,0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067,0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F 
      ,0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077,0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F 
      ,0x20AC,0x0081,0x201A,0x0192,0x201E,0x2026,0x2020,0x2021,0x02C6,0x2030,0x0160,0x2039,0x0152,0x008D,0x017D,0x008F 
      ,0x0090,0x2018,0x2019,0x201C,0x201D,0x2022,0x2013,0x2014,0x02DC,0x2122,0x0161,0x203A,0x0153,0x009D,0x017E,0x0178 
      ,0x00A0,0x00A1,0x00A2,0x00A3,0x00A4,0x00A5,0x00A6,0x00A7,0x00A8,0x00A9,0x00AA,0x00AB,0x00AC,0x00AD,0x00AE,0x00AF 
      ,0x00B0,0x00B1,0x00B2,0x00B3,0x00B4,0x00B5,0x00B6,0x00B7,0x00B8,0x00B9,0x00BA,0x00BB,0x00BC,0x00BD,0x00BE,0x00BF 
      ,0x00C0,0x00C1,0x00C2,0x00C3,0x00C4,0x00C5,0x00C6,0x00C7,0x00C8,0x00C9,0x00CA,0x00CB,0x00CC,0x00CD,0x00CE,0x00CF 
      ,0x00D0,0x00D1,0x00D2,0x00D3,0x00D4,0x00D5,0x00D6,0x00D7,0x00D8,0x00D9,0x00DA,0x00DB,0x00DC,0x00DD,0x00DE,0x00DF 
      ,0x00E0,0x00E1,0x00E2,0x00E3,0x00E4,0x00E5,0x00E6,0x00E7,0x00E8,0x00E9,0x00EA,0x00EB,0x00EC,0x00ED,0x00EE,0x00EF 
      ,0x00F0,0x00F1,0x00F2,0x00F3,0x00F4,0x00F5,0x00F6,0x00F7,0x00F8,0x00F9,0x00FA,0x00FB,0x00FC,0x00FD,0x00FE,0x00FF 
     }; 

    StringBuilder ret = new StringBuilder(bytes.length); 

    for(int i = 0; i < bytes.length; ++i) { 
     ret.append((char) windows1252[(bytes[i] < 0 ? 256 + bytes[i] : bytes[i])]); 
    } 

    return ret.toString(); 

} 

public static void main(String args[]) throws UnsupportedEncodingException { 
    String str = "Đỗ tiến"; 
    String w1252 = getStringModifiedW1252(str.getBytes("UTF-8")); 
    System.out.println(w1252); 
    //Äá»— tiáº¿n 
}

你可能想藏匿地图和数组，而不是某个地方创建它们的被调用的方法时

来源

2013-01-13 11:52:17 Esailija

我可以不编辑数据库，因为它不是在我的权限但有没有任何方式不使用Java处理，例如通过SQL命令转换？ – yelliver

@yelliver那么你可以在jbdc连接字符串 – Esailija

中尝试''jdbc：mysql：// hostName/dbName？characterEncoding = UTF-8“'它确实有效，因为我的数据库不是utf8格式（我注意到了） I现在满意你的解决方案你能否提供给我查询LIKE在SQL中的反向解决方案（从utf8字符串转换为修改windows1252字符串）？ – yelliver

-1

试试这个

byte[] asciiBytes1 = "Äá»— tiáº¿n".getBytes("Cp1258"); 
byte[] asciiBytes2 = "Äá»— tiáº¿n".getBytes("ISO-8859-1"); 
String unicode1 = new String(asciiBytes1, "Cp1258"); 
String unicode2 = new String(asciiBytes2, "ISO-8859-1"); 
System.out.println(unicode1);//�?ỗ tiến 
System.out.println(unicode2);//Đ�? tiến

来源

2013-01-13 11:27:48 httpworld

java不能正确地从拉丁语转换为utf8

回答

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