数据可视化30个demo

学习可视化展示的同学，可以参考，各种实列都有。使用的echarts。大屏数据

pkcs1Topkcs8.txt

java和ios联调RSA加签验。亲测可用 public static String pkcs1Topkcs8(String validKey) { // validKey = "MIGJAoGBAJzzXZJN+mMuFwUhPba10Ayn/GRameR57fH3LW8W76RF33vKyL3hAxXhY0QrFDu+zsVCKXRZg35ieDng2Ugg5mmdqH9gMEr0/LaLkcGXPHJzCINniAf7pciP2NjitLIeR+d6IVuxtxrNcTCnVOxBQiOTgAQwnLTURdMmdMlLcht3AgMBAAE="; String result = null; try { if (StringUtils.isNotBlank(validKey)) { //将BASE64编码的私钥字符串进行解码 byte[] encodeByte = Base64.decodeBase64(validKey); ASN1ObjectIdentifier pkcs_12 = new ASN1ObjectIdentifier("1.2.840.113549.1.12"); ASN1ObjectIdentifier bagtypes = pkcs_12.branch("10.1"); ASN1ObjectIdentifier pkcs8ShroudedKeyBag = bagtypes.branch("2"); AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(pkcs8ShroudedKeyBag); //PKCSObjectIdentifiers.pkcs8ShroudedKeyBag // ASN1Sequence asn1Sequence = ASN1Sequence.getInstance(encodeByte); ASN1Object asn1Object = ASN1Object.fromByteArray(encodeByte); SubjectPublicKeyInfo subjectPublicKeyInfo = new SubjectPublicKeyInfo(algorithmIdentifier,asn1Object); // PrivateKeyInfo privKeyInfo = new PrivateKeyInfo(algorithmIdentifier, asn1Object); byte[] pkcs8Bytes = subjectPublicKeyInfo.getEncoded(); String type = "PUBLIC KEY"; result = format2PemString(type, pkcs8Bytes); } } catch (Exception ex) { logger.error("签名异常:{}",ex); } logger.info("result-----" + result); return result.replace("-----BEGIN PUBLIC KEY-----","").replace("-----END PUBLIC KEY-----","").trim(); }