使用main方法将JsonObject的数据 JSONObject data = new JSONObject(); data.put("CERT_NO", "340504198701010023"); data.put("CUST_NAME", "张解慧"); data.put("PHONE", "19951933698");用sm2加密，已经提供好了公钥：di4qhicMkjukBZo3db8ZMXeT1KAWIaudkuMjYDfAHJpKysvnoVHkpLeNVIJacOd7X5l8bIQ0Jn/EnSvEu0/Cqg==是这个,发送到Url后打印结果

您可以使用以下代码对数据进行加密并发送到URL：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Base64;

import org.json.JSONObject;

public class SM2EncryptionExample {

    public static void main(String[] args) {
        try {
            // Create JSON object with data
            JSONObject data = new JSONObject();
            data.put("CERT_NO", "340504198701010023");
            data.put("CUST_NAME", "张解慧");
            data.put("PHONE", "19951933698");

            // Convert JSON object to string
            String dataStr = data.toString();

            // Encode data string with UTF-8
            byte[] dataBytes = dataStr.getBytes("UTF-8");

            // Load public key
            String publicKeyStr = "di4qhicMkjukBZo3db8ZMXeT1KAWIaudkuMjYDfAHJpKysvnoVHkpLeNVIJacOd7X5l8bIQ0Jn/EnSvEu0/Cqg==";
            byte[] publicKeyBytes = Base64.getDecoder().decode(publicKeyStr);

            // Encrypt data with SM2
            byte[] encryptedData = SM2Utils.encrypt(publicKeyBytes, dataBytes);

            // Encode encrypted data with Base64
            String encryptedDataStr = new String(Base64.getEncoder().encode(encryptedData));

            // Send encrypted data to URL
            URL url = new URL("http://example.com/api");
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Content-Type", "application/json");
            conn.setRequestProperty("Accept", "application/json");
            conn.setDoOutput(true);

            JSONObject request = new JSONObject();
            request.put("encrypted_data", encryptedDataStr);

            String requestBody = request.toString();
            conn.getOutputStream().write(requestBody.getBytes());

            BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));

            String output;
            while ((output = br.readLine()) != null) {
                System.out.println(output);
            }

            conn.disconnect();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

请注意，您需要将SM2加密算法的实现添加到您的项目中。在本例中，我使用了Bouncy Castle库。您可以在这里找到SM2加密算法的实现：https://github.com/bcgit/bc-java/blob/master/core/src/main/java/org/bouncycastle/crypto/generators/SM2KeyPairGenerator.java。