使用URLEncoder、URLDecoder进行URL参数的转码与解码

1.

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

 String strTest = "?=abc?中%1&2<3,4>";
 strTest = URLEncoder.encode(strTest, "UTF-8");
 System.out.println(strTest);
 strTest = URLDecoder.decode(strTest,"UTF-8");
 System.out.println(strTest);

2.结果

%3F%3Dabc%3F%E4%B8%AD%251%262%3C3%2C4%3E
?=abc?中%1&2<3,4>