diff --git a/sdk/common/src/main/java/io/dataease/utils/JsonUtil.java b/sdk/common/src/main/java/io/dataease/utils/JsonUtil.java
index d576ee6802..4b93c12f88 100644
--- a/sdk/common/src/main/java/io/dataease/utils/JsonUtil.java
+++ b/sdk/common/src/main/java/io/dataease/utils/JsonUtil.java
@@ -2,6 +2,7 @@ package io.dataease.utils;
 
 
 import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.StreamReadConstraints;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -15,6 +16,12 @@ public class JsonUtil {
     private static final ObjectMapper objectMapper;
     static {
         objectMapper = new ObjectMapper();
+        // 配置更大的 StreamReadConstraints 限制
+        objectMapper.getFactory().setStreamReadConstraints(
+                StreamReadConstraints.builder()
+                        .maxStringLength(50000000)
+                        .build()
+        );
         objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
     }