Java中URLEncode和URLDecode，编码与解码

try {
        // 将application/x-www-from-urlencoded字符串转换成普通字符串  
        String keyWord = URLDecoder.decode("%E4%BD%A0%E5%A5%BD", "utf-8");  
        System.out.println(keyWord);  //输出你好

        // 将普通字符创转换成application/x-www-from-urlencoded字符串  
        String urlString = URLEncoder.encode("你好", "utf-8");  //输出%E4%BD%A0%E5%A5%BD
        System.out.println(urlString);

    } catch (UnsupportedEncodingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
}

import java.net.URLEncoder;
import java.net.URLDecoder;

<a href="detail.jsp?section=<%=URLEncoder.encode("示例","utf-8")%>">示例</a>

String section=URLDecoder.decode(request.getParameter("section"),"utf-8");
section=new String(section.getBytes("iso-8859-1"), "utf-8");