我想在android中找到http响应的sha1sum，并用手动方式检查shasum结果。

URL url = new URL("http://example.com/api/endpoint");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");

int responseCode = connection.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
    // 获取响应数据
    InputStream inputStream = connection.getInputStream();
    String response = convertStreamToString(inputStream);

    // 计算SHA1摘要
    String sha1sum = calculateSHA1(response);

    // 手动验证SHA1摘要结果
    boolean isVerified = verifySHA1(sha1sum, "expected_sha1sum");

    if (isVerified) {
        // SHA1摘要验证通过
        // 进行后续操作
    } else {
        // SHA1摘要验证失败
        // 处理错误情况
    }
} else {
    // 处理HTTP请求失败的情况
}

// 将InputStream转换为String
private String convertStreamToString(InputStream inputStream) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
    StringBuilder stringBuilder = new StringBuilder();
    String line;
    while ((line = reader.readLine()) != null) {
        stringBuilder.append(line).append("\n");
    }
    reader.close();
    return stringBuilder.toString();
}

// 计算字符串的SHA1摘要
private String calculateSHA1(String input) throws NoSuchAlgorithmException {
    MessageDigest digest = MessageDigest.getInstance("SHA-1");
    byte[] bytes = digest.digest(input.getBytes());
    StringBuilder stringBuilder = new StringBuilder();
    for (byte b : bytes) {
        stringBuilder.append(String.format("%02x", b));
    }
    return stringBuilder.toString();
}

// 验证SHA1摘要结果
private boolean verifySHA1(String actual, String expected) {
    return actual.equals(expected);
}