import java.security.MessageDigest;
import java.util.TreeMap;
 
 class SignatureGenerator {
    public static void main(String[] args) throws Exception {
        String secret = "073fafcd9fea35fbe060007f0100d913";
 
        TreeMap<String, String> params = new TreeMap<>();
        params.put("appKey", "hbcyjsyxgs");
        params.put("content", "{\"xm\":\"张三\",\"xb\":\"1\",\"sfzh\":\"330102190010101234\",\"lxdh\":\"13333333333\",\"hksx\":\"330102\",\"hkxz\":\"X路X号X幢X室\",\"whcd\":\"20\",\"hyzk\":\"10\",\"xy\":\"5\",\"glm\":\"330102501001\",\"xzdxz\":\"X幢X室\",\"fdxm\":\"李四\",\"fdgmsfhm\":\"330102190010101234\",\"fdlxdh\":\"13333333333\",\"bl1\":\"XX公司\",\"dwfzr\":\"张三\",\"dwlxdh\":\"xxxx-xxxxxxxx\",\"gzdz\":\"XX公司\",\"sblx\":\"1\"}");
        params.put("format", "json");
        params.put("method", "processAddZzsbtLdrk");
        params.put("ryzpBase64", "1");
        params.put("sfzzpBase64", "1");
        params.put("v", "1.0");
 
        StringBuilder signStr = new StringBuilder();
        signStr.append(secret);
        for (String key : params.keySet()) {
            signStr.append(key).append(params.get(key));
        }
        signStr.append(secret);
 
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        byte[] digest = md.digest(signStr.toString().getBytes("UTF-8"));
        StringBuilder hexStr = new StringBuilder();
        for (byte b : digest) {
            hexStr.append(String.format("%02x", b));
        }
 
        System.out.println("签名字符串: " + signStr.toString());
        System.out.println("SHA1签名: " + hexStr.toString());
    }
}

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