不建议大家使用此方法激活，若资金允许，请点击/idea/buy/购买正版，谢谢合作！
前言
用过 IDEA 的同学应该都知道，这个软件是收费的，对于笔者来说是很贵了，因此只能另寻他法。 我们可以很轻松的从网上找到搭建本地激活服务器的教程，但是每次打开 IDEA 都要先打开激活服务器，太麻烦。 或者从网上找别人搭建好的激活服务器，但是可能某一天突然就用不了了，所以如果有条件还是自己搭建一个激活服务器比较靠谱。
要求
一台可以远程访问的主机 一个 Spring web 项目
动手
打开我们的 Spring 项目，如果没有的话请自行百度教程，添加一个 Controller
@RestController@RequestMapping("/rpc")public class LicenseController {@RequestMapping("/obtainTicket.action")public String obtainTicket(String salt, String userName) throws Exception {String content = "<ObtainTicketResponse>" +"<message></message>" +"<prolongationPeriod>607875500</prolongationPeriod>" +"<responseCode>OK</responseCode>" +"<salt>" + salt + "</salt>" +"<ticketId>1</ticketId>" +"<ticketProperties>licensee=" + userName + "licenseType=0</ticketProperties>" +"</ObtainTicketResponse>";return LicenseUtils.rsaSign(content);}@RequestMapping("/releaseTicket.action")public void releaseTicket(HttpServletResponse httpServletResponse) {httpServletResponse.setStatus(HttpServletResponse.SC_NOT_FOUND);}@RequestMapping("ping.action")public String ping(String salt) throws Exception {String content = "<PingResponse>" +"<message></message>" +"<responseCode>OK</responseCode>" +"<salt>" + salt + "</salt>" +"</PingResponse>";return LicenseUtils.rsaSign(content);}}复制代码
添加工具类
public class LicenseUtils {public static String rsaSign(String content) throws Exception {PrivateKey pk = getPrivateKey();RSAPrivateKey rpk = (RSAPrivateKey) pk;byte[] a = hashed(content);byte[] result = sign(rpk, a);String mm = byte2HexStr(result).toLowerCase();return "<!-- " + mm + " -->\n" + content;}private static PrivateKey getPrivateKey() throws Exception {String priKeyData = "MIIBVQIBADANBgkqhkiG9w0BAQEFAASCAT8wggE7AgEAAkEAt5yrcHAAjhglnCEn" +"6yecMWPeUXcMyo0+itXrLlkpcKIIyqPw546bGThhlb1ppX1ySX/OUA4jSakHekNP" +"5eWPawIDAQABAkBbr9pUPTmpuxkcy9m5LYBrkWk02PQEOV/fyE62SEPPP+GRhv4Q" +"Fgsu+V2GCwPQ69E3LzKHPsSNpSosIHSO4g3hAiEAywlDfGIl6acnakPrmJE0IL8q" +"vuO3FtsHBrpkUuOnXakCIQDngkKfjV8XwZn3Rv0vl20VAHb/IhwZfhejtsK+XwNo" +"8wIgGA5n7ZPfdBi3BdM4VeJWb87WrLlkVxPqeDSbcGrCyMkCIQCqdr+XvADI/UTh" +"TuQepuErFayJMBSAsNe3NFsw0cUxAQIhAIDGWlcQ+qcLc/yJ/Qb3EeiaonnfWs4m" +"7MHx821EWbGc";byte[] keyBytes = Base64.getDecoder().decode(priKeyData.getBytes());PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(keyBytes);KeyFactory keyFactory = KeyFactory.getInstance("RSA");return keyFactory.generatePrivate(keySpec);}private static byte[] hashed(String content) throws NoSuchAlgorithmException {byte[] bytes = content.getBytes();MessageDigest digest = MessageDigest.getInstance("MD5");return digest.digest(bytes);}private static byte[] sign(RSAPrivateKey pri, byte[] hashed) throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {int hashLen = hashed.length;byte[] prefix = new byte[]{48, 32, 48, 12, 6, 8, 42, -122, 72, -122, -9, 13, 2, 5, 5, 0, 4, 16};int tLen = prefix.length + hashLen;int k = (pri.getModulus().bitLength() + 7) / 8;byte[] em = new byte[k];em[1] = (byte) 1;for (int i = 2; i < k - tLen - 1; i++) {em[i] = (byte) 0xFF;}System.arraycopy(prefix, 0, em, k - tLen, prefix.length);System.arraycopy(hashed, 0, em, k - hashLen, hashLen);BigInteger m = new BigInteger(em);byte[] src = m.modPow(pri.getPrivateExponent(), pri.getModulus()).toByteArray();int numPaddingBytes = em.length - src.length;for (int i = 0; i < numPaddingBytes; i++) {em[i] = 0;}if (src.length > em.length) {System.arraycopy(src, 1, em, numPaddingBytes + 1, src.length - 1);} else {System.arraycopy(src, 0, em, numPaddingBytes, src.length);}return em;}private static String byte2HexStr(byte[] bytes) {StringBuilder sb = new StringBuilder();for (byte b : bytes) {String tmp = Integer.toHexString(b & 0xFF);sb.append((tmp.length() == 1) ? ("0" + tmp) : tmp);}return sb.toString().toUpperCase().trim();}}复制代码
然后打包，部署。 部署成功后把 IDEA 的激活服务器地址改为你的项目的地址（不带/rpc），就可以愉快的激活 IDEA 了。
福利
如果实在没条件自己搭建服务器，可以用笔者搭建好的激活服务器地址，低调使用，不然可能会被封
http://114.67.154.97
最后重申一下，不建议大家使用此方法激活，若资金允许，请点击/idea/buy/购买正版，谢谢合作！
参考 /u/chenq_/p/…
迁移自我的简书 .09.22
