diff --git a/src/main/java/com/zg/common/utils/MinioUtil.java b/src/main/java/com/zg/common/utils/MinioUtil.java
index cff635b..31fa50b 100644
--- a/src/main/java/com/zg/common/utils/MinioUtil.java
+++ b/src/main/java/com/zg/common/utils/MinioUtil.java
@@ -1,5 +1,6 @@
 package com.zg.common.utils;
 
+import com.zg.framework.config.RuoYiConfig;
 import io.minio.*;
 import io.minio.errors.*;
 import org.springframework.beans.factory.annotation.Value;
@@ -7,7 +8,11 @@ import org.springframework.stereotype.Component;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.annotation.PostConstruct;
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.File;
 import java.io.InputStream;
+import java.util.Base64;
 import java.util.UUID;
 
 /**
@@ -92,6 +97,27 @@ public class MinioUtil {
 
         return endpoint + "/" + bucketName + "/" + objectName;
     }
+    public String uploadBase64(String imgStr,String bucketName,String folder){
+        try {
+            String objectName = folder + UUID.randomUUID().toString().replace("-", "") + ".png";
+            String filePath =  RuoYiConfig.getProfile()+"/"+bucketName+"/"+objectName;
+            imgStr = imgStr.replace("data:image/png;base64,", "");
+            // 解码Base64字符串
+            byte[] imageBytes = Base64.getDecoder().decode(imgStr);
+
+            // 将字节转换为BufferedImage
+            BufferedImage img = javax.imageio.ImageIO.read(new java.io.ByteArrayInputStream(imageBytes));
+
+            // 写入图片到文件系统
+            File outputFile = new File(filePath);
+            ImageIO.write(img, "PNG", outputFile);
+            return endpoint + "/" + bucketName + "/" + objectName;
+//            System.out.println("图片已保存到: " + outputFile.getAbsolutePath());
+        } catch (Exception e) {
+            System.err.println("转换或保存图片时发生错误: " + e.getMessage());
+        }
+        return "";
+    }
 
     /**
      * 上传文件到默认 bucket 根目录
diff --git a/src/main/java/com/zg/project/wisdom/controller/AuditSignatureController.java b/src/main/java/com/zg/project/wisdom/controller/AuditSignatureController.java
index 2c4c225..251a4d3 100644
--- a/src/main/java/com/zg/project/wisdom/controller/AuditSignatureController.java
+++ b/src/main/java/com/zg/project/wisdom/controller/AuditSignatureController.java
@@ -2,8 +2,10 @@ package com.zg.project.wisdom.controller;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Map;
 import javax.servlet.http.HttpServletResponse;
 
+import com.alibaba.fastjson2.JSONObject;
 import com.zg.common.exception.ServiceException;
 import com.zg.common.utils.MinioUtil;
 import com.zg.common.utils.SecurityUtils;
@@ -52,7 +54,18 @@ public class AuditSignatureController extends BaseController
             return AjaxResult.error("上传失败: " + e.getMessage());
         }
     }
+    //    上传图片，接收base64格式  zhangjinbo
+    @PostMapping("/uploadBase64")
+    public AjaxResult uploadSignatureBase64(@RequestBody Map<String, String> param) {
+        String imgStr =  param.get("imgStr");
+//        return AjaxResult.success("上传成功").put("url", imgStr);
+        if (imgStr == null) {
+            return AjaxResult.error("上传文件不能为空");
+        }
+        String url = minioUtil.uploadBase64(imgStr, "jaz","signature/");
+        return AjaxResult.success("上传成功").put("url", url);
 
+    }
     /**
      * 查询审批记录列表
      */