回调

lefull-lot-service/src/main/java/cn/lefull/service/ali/CallbackService.java

+package cn.lefull.service.ali;
+
+import org.springframework.stereotype.Service;
+
+import java.nio.charset.Charset;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+/**
+ * @author 杨奇
+ */
+@Service
+public interface CallbackService {
+
+    boolean checkSign(String key, String body, String timestamp, String sign) throws NoSuchAlgorithmException, InvalidKeyException;
+
+    String hmacSha1(String key, String data, Charset bytesEncode) throws NoSuchAlgorithmException, InvalidKeyException;
+}

lefull-lot-service/src/main/java/cn/lefull/service/ali/CallbackServiceImpl.java

+package cn.lefull.service.ali;
+
+import org.springframework.stereotype.Service;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+import java.math.BigInteger;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+/**
+ * @author 杨奇
+ */
+@Service
+public class CallbackServiceImpl implements CallbackService{
+
+    @Override
+    public boolean checkSign(String key, String body, String timestamp, String sign) throws NoSuchAlgorithmException, InvalidKeyException {
+        return sign.equals(hmacSha1(key, body + timestamp, StandardCharsets.UTF_8));
+    }
+
+    @Override
+    public String hmacSha1(String key, String data, Charset bytesEncode) throws NoSuchAlgorithmException, InvalidKeyException {
+        SecretKeySpec signingKey = new SecretKeySpec(key.getBytes(bytesEncode), "HmacSHA1");
+        Mac mac = Mac.getInstance("HmacSHA1");
+        mac.init(signingKey);
+        //通用方法 （由 byte[]转 hex string）
+        return byteToHexString(mac.doFinal(data.getBytes(bytesEncode)));
+    }
+
+    private String byteToHexString(byte[] bytes){
+        return new BigInteger(1, bytes).toString(16);
+    }
+}