@Test
public void testKunJinKao(){
String str=" ";
try {
byte[] buff=null;
buff=str.getBytes("GBK");
String str1=new String(buff,"UTF-8");
System.out.println(str1);
buff=str.getBytes("UTF-8");
String str2=new String(buff,"GBK");
System.out.println(str2);
String str3=new String(str.getBytes("GBK"),"UTF-8");
String str4=new String(str3.getBytes("UTF-8"),"GBK");
System.out.println(str4);
/** * Got it.How are you,nice to meet you. * * Why? * 1、2 , * 3 , ( ), 。 */
/** * , 1 , 3 。 , 1 UTF-8 ; * 3 GBK 。 */
/** * , ? * * GBK Unicode 。 * Unicode , , Unicode , * Unicode (REPLACEMENT CHARACTER) , :U+FFFD * * U+FFFD UTF-8 , '\xef\xbf\xbd'。 * * , '\xef\xbf\xbd\xef\xbf\xbd', * GBK/CP936/GB2312/GB18030 , * 2 , : —— (0xEFBF), (0xBDEF), (0xBFBD)。 */
} catch (Exception e) {
e.printStackTrace();
}
}