diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/JsonUtils.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/JsonUtils.java
index 446bf1b00..e5c471e55 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/utils/JsonUtils.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/JsonUtils.java
@@ -6,6 +6,7 @@ import cn.hutool.core.util.ObjectUtil;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.exc.MismatchedInputException;
 import com.ruoyi.common.utils.spring.SpringUtils;
 import lombok.AccessLevel;
 import lombok.NoArgsConstructor;
@@ -78,6 +79,9 @@ public class JsonUtils {
         }
         try {
             return OBJECT_MAPPER.readValue(text, OBJECT_MAPPER.getTypeFactory().constructType(Dict.class));
+        } catch (MismatchedInputException e) {
+            // 类型不匹配说明不是json
+            return null;
         } catch (IOException e) {
             throw new RuntimeException(e);
         }
diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/listener/SysUserImportListener.java b/ruoyi-system/src/main/java/com/ruoyi/system/listener/SysUserImportListener.java
index 58f2f3136..c53bebc19 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/listener/SysUserImportListener.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/listener/SysUserImportListener.java
@@ -62,6 +62,9 @@ public class SysUserImportListener extends AnalysisEventListener<SysUserImportVo
                 successNum++;
                 successMsg.append("<br/>").append(successNum).append("、账号 ").append(user.getUserName()).append(" 导入成功");
             } else if (isUpdateSupport) {
+                Long userId = user.getUserId();
+                user = BeanUtil.toBean(userVo, SysUser.class);
+                user.setUserId(userId);
                 ValidatorUtils.validate(user);
                 user.setUpdateBy(operName);
                 userService.updateUser(user);