支付寶開放平臺的demo地址：https://docs.open.alipay.com/54/104509/

我在集成支付寶SDK的時候遇到兩個問題：

第一個問題：rsa.h頭文件找不到

解決辦法：在building settings里搜索Header Search Paths 添加文件所在路徑?$(SRCROOT)/項目名/文件名

第二個問題：

Undefined symbols for architecture arm64:

? "_EVP_DecodeBlock", referenced from:

? ? ? _dataFromBase64String in openssl_wrapper.o

? "_BIO_free_all", referenced from:

? ? ? _rsa_sign_with_private_key_pem in openssl_wrapper.o

? ? ? _rsa_verify_with_public_key_pem in openssl_wrapper.o

? "_PEM_read_bio_RSA_PUBKEY", referenced from:

? ? ? _rsa_verify_with_public_key_pem in openssl_wrapper.o

? "_RSA_verify", referenced from:

? ? ? _rsa_verify_with_public_key_pem in openssl_wrapper.o

? "_BIO_new", referenced from:

? ? ? _rsa_sign_with_private_key_pem in openssl_wrapper.o

? ? ? _rsa_verify_with_public_key_pem in openssl_wrapper.o

? "_EVP_EncodeBlock", referenced from:

? ? ? _base64StringFromData in openssl_wrapper.o

? "_PEM_read_bio_RSAPrivateKey", referenced from:

? ? ? _rsa_sign_with_private_key_pem in openssl_wrapper.o

? "_RSA_check_key", referenced from:

? ? ? _rsa_sign_with_private_key_pem in openssl_wrapper.o

? "_SHA1", referenced from:

? ? ? _rsa_sign_with_private_key_pem in openssl_wrapper.o

? ? ? _rsa_verify_with_public_key_pem in openssl_wrapper.o

?? ? (maybe you meant: __Z24alisec_crypto_SHA1_blockP26alisec_crypto_shastate_st_Pmi)

? "_RSA_sign", referenced from:

? ? ? _rsa_sign_with_private_key_pem in openssl_wrapper.o

? "_BIO_ctrl", referenced from:

? ? ? _rsa_sign_with_private_key_pem in openssl_wrapper.o

? ? ? _rsa_verify_with_public_key_pem in openssl_wrapper.o

? "_BIO_s_file", referenced from:

? ? ? _rsa_sign_with_private_key_pem in openssl_wrapper.o

? ? ? _rsa_verify_with_public_key_pem in openssl_wrapper.o

ld: symbol(s) not found for architecture arm64

clang: error: linker command failed with exit code 1 (use -v to see invocation)

這是缺少libcrypto.a和libssl.a文件引起的怕敬，這兩個文件在支付寶的demo中都有揣炕，添加進項目即可。