testgeneral.java

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package test.util;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

public class TestGeneral {
    public static void main(String[] args) throws UnsupportedEncodingException {
  //  System.out.println(URLEncoder.encode("测试","GBK"));//%E6%B5%8B%E8%AF%95     //%3F%3F
    System.out.println(URLEncoder.encode("-","GBK"));//%E6%B5%8B%E8%AF%95     //%3F%3F
    //   System.out.println(URLEncoder.encode("测试","GBK"));//%E6%B5%8B%E8%AF%95     //%3F%3F
   //    System.out.println(URLDecoder.decode("%E4%B8%AD%E5%9B%BD","utf-8"));//%E6%B5%8B%E8%AF%95     //%3F%3F
    //    System.out.println(URLDecoder.decode("%B2%E2%CA%D4","iso-8859-1"));//%E6%B5%8B%E8%AF%95     //%3F%3F
/*
        System.out.println(Character.isLetterOrDigit(' '));
        System.out.println(Character.isLetterOrDigit('z'));
        System.out.println(Character.isLetterOrDigit('A'));
        System.out.println(Character.isLetterOrDigit('D'));
        System.out.println(Character.isLetterOrDigit('0'));
        System.out.println(Character.isLetterOrDigit('9'));
        System.out.println(Character.isLetterOrDigit('_'));
        System.out.println(Character.isLetterOrDigit('-'));*/

     /*  System.out.println(((int) 'a'));
       System.out.println(((int) 'z'));
       System.out.println(((int) 'A'));
       System.out.println(((int) 'Z'));
       System.out.println(((int) '0'));
       System.out.println(((int) '1'));
       System.out.println(((int) '9'));*/
    }
}