diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/irs/sign/IRSAPIRequest.java b/pmapi/src/main/java/com/ningdatech/pmapi/irs/sign/IRSAPIRequest.java
index fcdae3e..d98be0e 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/irs/sign/IRSAPIRequest.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/irs/sign/IRSAPIRequest.java
@@ -6,7 +6,6 @@ import com.ningdatech.basic.exception.BizException;
 import com.ningdatech.basic.util.StrPool;
 import com.ningdatech.pmapi.irs.config.IrsSealPlatformProperties;
 import com.ningdatech.pmapi.todocenter.model.dto.SignReqDTO;
-import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
 import org.apache.commons.lang3.tuple.Pair;
 import org.apache.http.HttpEntity;
 import org.apache.http.HttpResponse;
@@ -81,7 +80,8 @@ public class IRSAPIRequest {
         // 获取盖好章的PDF文件内容Base64字符串
         String signFileB64 = object.getString("signFileB64");
         if (Objects.nonNull(signFileB64)){
-            return signFileB64.getBytes();
+            Base64.getDecoder().decode(signFileB64);
+            return Base64.getDecoder().decode(signFileB64);
         }else {
             return null;
         }
@@ -245,7 +245,7 @@ public class IRSAPIRequest {
             //刷新此输出流并强制写出所有缓冲的输出字节
             bout.flush();
             byte[] bytes = baos.toByteArray();
-            return Base64.encode(bytes);
+            return String.valueOf(Base64.getEncoder().encode(bytes));
             //return encoder.encodeBuffer(bytes);
 
         } catch (IOException e) {
diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java b/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
index 69ec8c0..ab6f75c 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
@@ -1,5 +1,6 @@
 package com.ningdatech.pmapi.todocenter.manage;
 
+import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.math.BigDecimal;
@@ -495,9 +496,17 @@ public class TodoCenterManage {
         signReq.setSignType(signType);
         // 调用盖章接口,获取盖章后返回的pdf文件字符数组
         byte[] signPdf = IRSAPIRequest.createSignPdf(signReq);
-
+        ByteArrayInputStream inputStream = null;
+        if (Objects.nonNull(signPdf)) {
+            inputStream = new ByteArrayInputStream(signPdf);
+        }
         // 转换成MultipartFile
-        MultipartFile multipartFile = new MockMultipartFile("file", originalFileName, "application/pdf", signPdf);
+        MultipartFile multipartFile;
+        try {
+            multipartFile = new MockMultipartFile("file", originalFileName, "application/pdf", inputStream);
+        } catch (IOException e) {
+            throw new BizException("生成盖章pdf文件失败!");
+        }
         // 上传OSS
         FileResultVO resultVo = fileService.upload(multipartFile, "default");
         // 将返回的文件ID更新到项目库中对应的项目下