使用請求引數構造規範化的請求字串

   private static final String ENCODING = "UTF-8";
    private static String percentEncode(String value) throws UnsupportedEncodingException {
        return value != null ? URLEncoder.encode(value, ENCODING).replace("+", "%20").replace("*", "%2A").replace("%7E", "~") : null;
    }

　　使用UTC時間按照ISO 8601標準，格式為YYYY-MM-DDThh:mm:ss

        Date date = new Date();
        System.out.println("本地時間Date: " + date);
        TimeZone tz = TimeZone.getTimeZone("UTC");
        DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
        df.setTimeZone(tz);  //獲取時區
        String nowAsISO = df.format(date);

引數排序 （用到的排序方法在上一篇隨筆）

            Map<String, String> map = new HashMap<>();
            String ti=System.currentTimeMillis()+"";//當隨機數使用
            String url="http://ons.cn-shenzhen.aliyuncs.com?";
            map.put("Action","OnsRegionList");
            map.put("productName","Ons");
            map.put("domain","cn-shenzhen");
            map.put(
 
"Version","2019-02-14");
            map.put("AccessKeyId","");
            map.put("AccessKeySecret","");
            map.put("SignatureMethod","HMAC-SHA1");
            map.put("Timestamp",nowAsISO);
            map.put("SignatureVersion","1.0");
            map.put("SignatureNonce",ti);
            map.put("Format","JSON");
            String s = formatUrlMap(map, true);

處理待簽名的引數、簽名

            String   StringToSign=
                    "GET" + "&" +
                            percentEncode("/") + "&" +
                            percentEncode(s);

　　　　　　String cu = HMACSha1(StringToSign,AccessKeySecret+"&");

將簽名欄位加入排序、進行請求url拼接、發起請求（Jsoup不知道的可以自行百度）

          Connection connect = Jsoup.connect(url+s2);

            System.out.println(connect.ignoreContentType(true).ignoreHttpErrors(true).get());

        <dependency>
            <groupId>org.jsoup</groupId>
            <artifactId>jsoup</artifactId>
            <version>1.13.1</version>
        </dependency>

列印結果