生成pem文件

打开Keychain Access 导出推送证书和私钥

推送证书 cert.p12

私钥 key.p12

导出.pem文件

转换推送证书

openssl pkcs12 -clcerts -nokeys -out cert.pem -in cert.p12

转换私钥

openssl pkcs12 -nocerts -out key.pem -in key.p12  #输入2次密码，后面golang代码中密码部分相同

合并推送证书和私钥

cat cert.pem key.pem > push_ck.pem

测试生成的pem

openssl s_client -connect gateway.sandbox.push.apple.com:2195 -cert cert.pem -key key.pem

输出大体如下说明成功

　　

使用golang的推送库

package mainimport (	"log"	apns "github.com/sideshow/apns2"	"github.com/sideshow/apns2/certificate")func main() {	cert, pemErr := certificate.FromPemFile("push_ck.pem", "密码")	if pemErr != nil {		log.Println("Cert Error:", pemErr)	}	notification := &apns.Notification{}	notification.DeviceToken = "6970fc6ecdda0fa32f48e920b4657149f394eb2c3f03b7517f11f450a8ba2b41"	notification.Topic = "com.yghc.property"	notification.Payload = []byte(`{		  "aps" : {			"alert" : "Hello!"		  }		}	`)	client := apns.NewClient(cert).Production()        //开发环境	res, err := client.Development().Push(notification)	if err != nil {		log.Println("Error:", err)		return	}	log.Println("APNs ID:", res.ApnsID)}