fix(http-request): prevent UUID truncation in JSON body (#31444)

Signed-off-by: majiayu000 <1835304752@qq.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/pyproject.toml

@@ -31,7 +31,7 @@ dependencies = [
     "gunicorn~=23.0.0",
     "httpx[socks]~=0.27.0",
     "jieba==0.42.1",
-    "json-repair>=0.41.1",
+    "json-repair>=0.55.1",
     "jsonschema>=4.25.1",
     "langfuse~=2.51.3",
     "langsmith~=0.1.77",

api/tests/unit_tests/core/workflow/nodes/http_request/test_http_request_executor.py

@@ -475,3 +475,130 @@ def test_valid_api_key_works():
     headers = executor._assembling_headers()
     assert "Authorization" in headers
     assert headers["Authorization"] == "Bearer valid-api-key-123"
+
+
+def test_executor_with_json_body_and_unquoted_uuid_variable():
+    """Test that unquoted UUID variables are correctly handled in JSON body.
+
+    This test verifies the fix for issue #31436 where json_repair would truncate
+    certain UUID patterns (like 57eeeeb1-...) when they appeared as unquoted values.
+    """
+    # UUID that triggers the json_repair truncation bug
+    test_uuid = "57eeeeb1-450b-482c-81b9-4be77e95dee2"
+
+    variable_pool = VariablePool(
+        system_variables=SystemVariable.empty(),
+        user_inputs={},
+    )
+    variable_pool.add(["pre_node_id", "uuid"], test_uuid)
+
+    node_data = HttpRequestNodeData(
+        title="Test JSON Body with Unquoted UUID Variable",
+        method="post",
+        url="https://api.example.com/data",
+        authorization=HttpRequestNodeAuthorization(type="no-auth"),
+        headers="Content-Type: application/json",
+        params="",
+        body=HttpRequestNodeBody(
+            type="json",
+            data=[
+                BodyData(
+                    key="",
+                    type="text",
+                    # UUID variable without quotes - this is the problematic case
+                    value='{"rowId": {{#pre_node_id.uuid#}}}',
+                )
+            ],
+        ),
+    )
+
+    executor = Executor(
+        node_data=node_data,
+        timeout=HttpRequestNodeTimeout(connect=10, read=30, write=30),
+        variable_pool=variable_pool,
+    )
+
+    # The UUID should be preserved in full, not truncated
+    assert executor.json == {"rowId": test_uuid}
+    assert len(executor.json["rowId"]) == len(test_uuid)
+
+
+def test_executor_with_json_body_and_unquoted_uuid_with_newlines():
+    """Test that unquoted UUID variables with newlines in JSON are handled correctly.
+
+    This is a specific case from issue #31436 where the JSON body contains newlines.
+    """
+    test_uuid = "57eeeeb1-450b-482c-81b9-4be77e95dee2"
+
+    variable_pool = VariablePool(
+        system_variables=SystemVariable.empty(),
+        user_inputs={},
+    )
+    variable_pool.add(["pre_node_id", "uuid"], test_uuid)
+
+    node_data = HttpRequestNodeData(
+        title="Test JSON Body with Unquoted UUID and Newlines",
+        method="post",
+        url="https://api.example.com/data",
+        authorization=HttpRequestNodeAuthorization(type="no-auth"),
+        headers="Content-Type: application/json",
+        params="",
+        body=HttpRequestNodeBody(
+            type="json",
+            data=[
+                BodyData(
+                    key="",
+                    type="text",
+                    # JSON with newlines and unquoted UUID variable
+                    value='{\n"rowId": {{#pre_node_id.uuid#}}\n}',
+                )
+            ],
+        ),
+    )
+
+    executor = Executor(
+        node_data=node_data,
+        timeout=HttpRequestNodeTimeout(connect=10, read=30, write=30),
+        variable_pool=variable_pool,
+    )
+
+    # The UUID should be preserved in full
+    assert executor.json == {"rowId": test_uuid}
+
+
+def test_executor_with_json_body_preserves_numbers_and_strings():
+    """Test that numbers are preserved and string values are properly quoted."""
+    variable_pool = VariablePool(
+        system_variables=SystemVariable.empty(),
+        user_inputs={},
+    )
+    variable_pool.add(["node", "count"], 42)
+    variable_pool.add(["node", "id"], "abc-123")
+
+    node_data = HttpRequestNodeData(
+        title="Test JSON Body with mixed types",
+        method="post",
+        url="https://api.example.com/data",
+        authorization=HttpRequestNodeAuthorization(type="no-auth"),
+        headers="",
+        params="",
+        body=HttpRequestNodeBody(
+            type="json",
+            data=[
+                BodyData(
+                    key="",
+                    type="text",
+                    value='{"count": {{#node.count#}}, "id": {{#node.id#}}}',
+                )
+            ],
+        ),
+    )
+
+    executor = Executor(
+        node_data=node_data,
+        timeout=HttpRequestNodeTimeout(connect=10, read=30, write=30),
+        variable_pool=variable_pool,
+    )
+
+    assert executor.json["count"] == 42
+    assert executor.json["id"] == "abc-123"