URL

URL就是搜索栏中似乱码的字符串，就是所谓的application/x-www-form-urlencoded MIME字符串
编程中涉及普通字符与这些字符的转换，就需要使用URLDcoder和URLEncoder

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

public class URL {
    public void main(String[] args) throws UnsupportedEncodingException{
        String s=URLEncoder.encode("www.baidu.com","GBK");
        System.out.println(s);
        String s1=URLDecoder.decode("http://www.jianshu.com/writer#/notebooks/9036412/notes/13324610","GBK");
        System.out.println(s1);
    }
}