jwt使用rsa加密时报错（main方法测试始终正确，一使用web运行就报错）

报错（main方法测试始终正确，一使用web运行就报错）"/>

jwt使用rsa加密时报错（main方法测试始终正确，一使用web运行就报错）

错误信息

java.security.InvalidKeyException: IOException: DerInputStream.getLength(): lengthTag=13, too big.

原因：多线程引起的并发问题（更具体的原因不清楚）。

解决：使用synchronized （或者Lock，我懒得用Lock了）

	/*** 从文件中获取公钥* * @param publicKeyFilePath*            文件路径* @return*/public synchronized static PublicKey getPublicKey(String publicKeyFilePath) throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {return getPublicKey(new FileInputStream(publicKeyFilePath));}/*** 从文件中获取公钥* * @param publicKeyFilePath*            classpath中的文件相对路径（只有文件名都行，ClassLoader.getResourceAsStream会自行搜索）* @return*/public synchronized static PublicKey getPublicKeyClasspath(String publicKeyFilePath) throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {return getPublicKey(RsaKeyUtil.class.getClassLoader().getResourceAsStream(publicKeyFilePath));}/*** 从字节输入流中获取公钥* * @param publicKeyInput* @return* @throws IOException* @throws NoSuchAlgorithmException* @throws InvalidKeySpecException*/public synchronized static PublicKey getPublicKey(InputStream publicKeyInput) throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {try (InputStream input = publicKeyInput; DataInputStream dis = new DataInputStream(input)) {byte[] keyBytes = new byte[input.available()];dis.readFully(keyBytes);X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);KeyFactory kf = KeyFactory.getInstance("RSA");return kf.generatePublic(spec);}}public synchronized static PublicKey getPublicKey64(String publicKeyFilePath) throws Exception {return getPublicKey64(new FileInputStream(publicKeyFilePath));}public synchronized static PublicKey getPublicKey64Classpath(String publicKeyFilePath) throws Exception {return getPublicKey64(RsaKeyUtil.class.getClassLoader().getResourceAsStream(publicKeyFilePath));}public synchronized static PublicKey getPublicKey64(InputStream publicKeyInput) throws Exception {try (InputStream input = publicKeyInput) {String key64 = FileUtil.readAllString(input);byte[] keyByte = Base64Util.decodeBase64(key64);X509EncodedKeySpec spec = new X509EncodedKeySpec(keyByte);KeyFactory kf = KeyFactory.getInstance("RSA");return kf.generatePublic(spec);}}