Java url 特定字段encoder

s="https://www.w3cschool.cn/alibaba_java/alibaba_java-zjnm3eq5.html";
  String[] split1 = s.split("/");
                    StringBuilder stringBuilder = new StringBuilder();
                    for (int i = 0; i < split1.length; i++) {
                        String encode = URLEncoder.DEFAULT.encode(split1[i], StandardCharsets.UTF_8);
                        stringBuilder.append(encode);
                        if (i!=split1.length-1){
                            stringBuilder.append("/");
                        }
                    }
                    s=stringBuilder.toString();