密钥Key对象生成出现错误

Question

您好博主，在跟那个你刚出的前后端分离的项目中出现了一个问题

```java
    public static RSAPublicKey getRSAPublicKey(String rsaPublicKey) throws NoSuchAlgorithmException, InvalidKeySpecException {
        byte[] b = Base64.getDecoder().decode(rsaPublicKey);
        X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(b);
        KeyFactory rsa = KeyFactory.getInstance("RSA");
        Key publicKey = rsa.generatePublic(x509EncodedKeySpec);
         return  (RSAPublicKey)publicKey;
    }

```java
java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: IOException: algid parse error, not a sequence
    at sun.security.rsa.RSAKeyFactory.engineGeneratePublic(RSAKeyFactory.java:240)
    at java.security.KeyFactory.generatePublic(KeyFactory.java:334)

请问该如何解决

Answer 1

1. 请确认通过代码里提供的网站生成的公钥和私钥是否写反了？
2. 复制到java代码后会自动加\n，需要去掉

有没有解决？如何没有，我可以把代码拷贝给你。

String publicKey = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArK+NOK/89rNAWeAguHti" +
                "91QpMaHDZ6EaaySu5dyEvw6oUs4t8AiEc6HC7iTl1U2fxvuukk6P3e96V5w+fb+S" +
                "UFUUaO+oocsKOOxwXcfJ1uQorMsEns1PjYB9weOOYYQoE2KY34AE6+zRT3w8uMXX" +
                "pBmazZbPhUP8cGAOimUv4nSIK4n/nwBezEEeFM5dREaxabiDBe9HvOXmu8EfO2/P" +
                "MsE5K9x/GP/wNbE+yzP+rC6rr3mgJNugUmE7BB1Usl7pS1myukiFz+PXoE/nibed" +
                "k5FWzL5jeV8M8F7AZ404DdVhyN5dbLvwAI8jnnJ1nNRVEh5+1H0rvwSSlTAo+Po+" +
                "bwIDAQAB";
        String privateKey = "MIIEvwIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQCsr404r/z2s0BZ" +
                "4CC4e2L3VCkxocNnoRprJK7l3IS/DqhSzi3wCIRzocLuJOXVTZ/G+66STo/d73pX" +
                "nD59v5JQVRRo76ihywo47HBdx8nW5CisywSezU+NgH3B445hhCgTYpjfgATr7NFP" +
                "fDy4xdekGZrNls+FQ/xwYA6KZS/idIgrif+fAF7MQR4Uzl1ERrFpuIMF70e85ea7" +
                "wR87b88ywTkr3H8Y//A1sT7LM/6sLquveaAk26BSYTsEHVSyXulLWbK6SIXP49eg" +
                "T+eJt52TkVbMvmN5XwzwXsBnjTgN1WHI3l1su/AAjyOecnWc1FUSHn7UfSu/BJKV" +
                "MCj4+j5vAgMBAAECggEBAJ9/djzJsChc4C8jKJW8wWgYQAQrmUR6NOCJfVGqIKIn" +
                "c6kn7p4p/8yduGIlinM9wzoS9OcF0TP4IVQSaFXVP9sa+kMCOQtXchWprQ+xnOfy" +
                "zO7shVP35maYK4+OEtBXNHzTMMgegm02yw1TfvJbKhXT4HvLs9kvNlbFIikJ1PSf" +
                "kRdruq8/SiqDAiwtN4OUn7X3/pIx6b9P7hbO95aNUi1Dxb8xjQA05QVlqA8OwNyq" +
                "ORUHI0ayZI6dmyTA5FUkZZf1tS0PzVLjubBOjZHRSq1a8Eg2qV+e/zDNPkuKQZ3g" +
                "jyy6PamkRlSbfel6+8zacQVC8QRe1AAX68HFe/WKz2ECgYEA2WZySOPBJF85KuK1" +
                "Tv8rgNAoRZZNZbH/0YT2OkBOprOX7bOtvSx+nTZPw0U7nR3nMqnJ9uk/gVfmkbD6" +
                "WzHaSNEpxim2lT+A9jMC5FZcaQxJDHHBpUdMbPssvPGkE8i0XY+rxyQCugVp7+Jg" +
                "mTHISfaZCSBmAG09qtp3Wuk8li0CgYEAy1iv53kChnVvBTckQYHWI5R5ByzPOEum" +
                "EHLo8fvEvUSWaVlDDoPeFw1XtybNVBeyeu/c3HLi7/Z1836PwtpCCAF9XSIq8N/B" +
                "PUR2hKDlg4j3m6BvR25Pu54ORbyevL1LugV+iGVfQ9lWjeV6XeYoN/jGTwSY/Hb+" +
                "dc4rur8sBIsCgYBYlFx2hI460q3JYow7fs7r8mSmTeKFUCyK4yEshO1HESATU0W0" +
                "Mb/5MJr5Vmk+0GNWikXnXAxrGDSzIigwJjTpvIfH3VEuqKxUJF7GSMXoa4AMGQGs" +
                "5UsnkIQfDFotUXbkNFjqkCqoPvJ2Mofng5g3QsoCJPhKrjgVOGSvXx83lQKBgQCG" +
                "0Y8WveFRumxYHd4Y3HdYcajoe+oLngRFJZqSTWV8QwwiXr8Z0Y4e5IbCdKRv26JG" +
                "5d8d/cG+bT54qPGxs7lRy4MNi4jC2OcqssiNWIuy8M2RzgXZaybL8pft3oe0BSE+" +
                "/UOONP+7YU6El5/Qv7bsnTEF1LuFr3M4MfBGSVdqzwKBgQDJBulXrWWQujQlQ+9/" +
                "u7YoCwIr6N/ZL0fpnKtaQ7WfHs7zy6QUhu6skufFJKmWehOD6i+SWBmuhv4PPMCS" +
                "IPhjChIh8AL8AVfSCjrksP0YENOHtbBhSE9bBHdH4u9VBy+6lbErSLl0867Qy4Z4" +
                "LAN0Bjc+5MNy0vMQmqat/EKlHA==";