编码与解码方法收集

//编码 sun.misc.BASE64Decoder
@Test
public void t9(){
BASE64Encoder encoder = new BASE64Encoder() ;
String r = "" ;
try {
r = encoder.encode("中国".getBytes("utf-8")) ;
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
System.out.println(r); //5Lit5Zu9
}

//解码sun.misc.BASE64Decoder
@Test
public void t10(){
BASE64Decoder decoder = new BASE64Decoder() ;
String r = "" ;
try {
r = new String(decoder.decodeBuffer("5Lit5Zu9"), "utf-8") ;
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(r);//中国
}

//编码java.net.URLEncoder
@Test
public void t11(){
String r = "" ;
try {
r = URLEncoder.encode("中国", "utf-8") ;
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
System.out.println(r); //%E4%B8%AD%E5%9B%BD
}

//解码java.net.URLDecoder
@Test
public void t12(){
String r = "" ;
try {
r = URLDecoder.decode("%E4%B8%AD%E5%9B%BD", "utf-8") ;
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
System.out.println(r);//中国
}