diff --git a/IJPay-Core/src/main/java/com/ijpay/core/kit/PayKit.java b/IJPay-Core/src/main/java/com/ijpay/core/kit/PayKit.java
index 38aeeeb450271049678f12a39ac411cab4336e8a..5a7c548c4e0bb46c9f82eab8ffffd5e62a4559a0 100644
--- a/IJPay-Core/src/main/java/com/ijpay/core/kit/PayKit.java
+++ b/IJPay-Core/src/main/java/com/ijpay/core/kit/PayKit.java
@@ -426,7 +426,10 @@ public class PayKit {
 	 * @throws Exception 异常信息
 	 */
 	public static PrivateKey getPrivateKey(String keyPath) throws Exception {
-		String originalKey = FileUtil.readUtf8String(keyPath);
+		String originalKey = getCertFileContent(keyPath);
+		if (StrUtil.isEmpty(originalKey)) {
+			throw new RuntimeException("商户私钥证书获取失败");
+		}
 		return getPrivateKeyByKeyContent(originalKey);
 	}
 
@@ -673,4 +676,22 @@ public class PayKit {
 		// 相对地址
 		return getFileToStream(path);
 	}
+
+	/**
+	 * 通过路径获取证书文件的内容
+	 *
+	 * @param path 文件路径
+	 * @return 文件内容
+	 */
+	public static String getCertFileContent(String path) {
+		if (StrUtil.isBlank(path)) {
+			return null;
+		}
+		// 绝对地址
+		File file = new File(path);
+		if (!file.exists()) {
+			path = getAbsolutePath(path);
+		}
+		return FileUtil.readUtf8String(path);
+	}
 }
diff --git a/IJPay-Core/src/main/java/com/ijpay/core/kit/WxPayKit.java b/IJPay-Core/src/main/java/com/ijpay/core/kit/WxPayKit.java
index d5e68524e01bc885cbcf180294310e2f271f0f51..748c29802b13949e1e0acb99dd32b1f644e9f0eb 100644
--- a/IJPay-Core/src/main/java/com/ijpay/core/kit/WxPayKit.java
+++ b/IJPay-Core/src/main/java/com/ijpay/core/kit/WxPayKit.java
@@ -1,6 +1,5 @@
 package com.ijpay.core.kit;
 
-import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.util.StrUtil;
 import cn.hutool.json.JSONObject;
 import cn.hutool.json.JSONUtil;
@@ -8,7 +7,6 @@ import com.ijpay.core.IJPayHttpResponse;
 import com.ijpay.core.enums.RequestMethodEnum;
 import com.ijpay.core.enums.SignType;
 
-import java.io.BufferedInputStream;
 import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
 import java.security.PrivateKey;
@@ -530,8 +528,8 @@ public class WxPayKit {
 	 * @throws Exception 异常信息
 	 */
 	public static String buildAuthorization(RequestMethodEnum method, String urlSuffix, String mchId,
-                                            String serialNo, String keyPath, String body, String nonceStr,
-                                            long timestamp, String authType) throws Exception {
+											String serialNo, String keyPath, String body, String nonceStr,
+											long timestamp, String authType) throws Exception {
 		// 构建签名参数
 		String buildSignMessage = PayKit.buildSignMessage(method, urlSuffix, timestamp, nonceStr, body);
 		String signature = PayKit.createSign(buildSignMessage, keyPath);
@@ -555,8 +553,8 @@ public class WxPayKit {
 	 * @throws Exception 异常信息
 	 */
 	public static String buildAuthorization(RequestMethodEnum method, String urlSuffix, String mchId,
-                                            String serialNo, PrivateKey privateKey, String body, String nonceStr,
-                                            long timestamp, String authType) throws Exception {
+											String serialNo, PrivateKey privateKey, String body, String nonceStr,
+											long timestamp, String authType) throws Exception {
 		// 构建签名参数
 		String buildSignMessage = PayKit.buildSignMessage(method, urlSuffix, timestamp, nonceStr, body);
 		String signature = PayKit.createSign(buildSignMessage, privateKey);
@@ -577,7 +575,7 @@ public class WxPayKit {
 	 * @throws Exception 异常信息
 	 */
 	public static String buildAuthorization(RequestMethodEnum method, String urlSuffix, String mchId,
-                                            String serialNo, String keyPath, String body) throws Exception {
+											String serialNo, String keyPath, String body) throws Exception {
 
 		long timestamp = System.currentTimeMillis() / 1000;
 		String authType = "WECHATPAY2-SHA256-RSA2048";
@@ -599,7 +597,7 @@ public class WxPayKit {
 	 * @throws Exception 异常信息
 	 */
 	public static String buildAuthorization(RequestMethodEnum method, String urlSuffix, String mchId,
-                                            String serialNo, PrivateKey privateKey, String body) throws Exception {
+											String serialNo, PrivateKey privateKey, String body) throws Exception {
 
 		long timestamp = System.currentTimeMillis() / 1000;
 		String authType = "WECHATPAY2-SHA256-RSA2048";
@@ -622,7 +620,7 @@ public class WxPayKit {
 		String body = (String) map.get("body");
 		String nonceStr = (String) map.get("nonceStr");
 		String timestamp = (String) map.get("timestamp");
-		return verifySignature(signature, body, nonceStr, timestamp, FileUtil.getInputStream(certPath));
+		return verifySignature(signature, body, nonceStr, timestamp, PayKit.getCertFileInputStream(certPath));
 	}
 
 	/**
@@ -638,7 +636,7 @@ public class WxPayKit {
 		String nonceStr = response.getHeader("Wechatpay-Nonce");
 		String signature = response.getHeader("Wechatpay-Signature");
 		String body = response.getBody();
-		return verifySignature(signature, body, nonceStr, timestamp, FileUtil.getInputStream(certPath));
+		return verifySignature(signature, body, nonceStr, timestamp, PayKit.getCertFileInputStream(certPath));
 	}
 
 	/**
@@ -785,7 +783,7 @@ public class WxPayKit {
 	 */
 	public static String verifyNotify(String serialNo, String body, String signature, String nonce,
 									  String timestamp, String key, String certPath) throws Exception {
-		BufferedInputStream inputStream = FileUtil.getInputStream(certPath);
+		InputStream inputStream = PayKit.getCertFileInputStream(certPath);
 		return verifyNotify(serialNo, body, signature, nonce, timestamp, key, inputStream);
 	}
 }