diff --git a/go/appbuilder/app_builder_client_test.go b/go/appbuilder/app_builder_client_test.go
index 6bf88b25..a38d67c8 100644
--- a/go/appbuilder/app_builder_client_test.go
+++ b/go/appbuilder/app_builder_client_test.go
@@ -989,7 +989,7 @@ func TestAppBuilderClientRunCustomMetadata(t *testing.T) {
 	res, err := client.Run(AppBuilderClientRunRequest{
 		AppID:          appID,
 		Query:          "我要回老家相亲",
-		Stream:         false,
+		Stream:         true,
 		ConversationID: conversationID,
 		CustomMetadata: &CustomMetadata{
 			OverrideRoleInstruction: `# 角色任务\n" +
@@ -1002,7 +1002,7 @@ func TestAppBuilderClientRunCustomMetadata(t *testing.T) {
                 "# 要求与限制\n" +
                 "\n" +
                 "1. 输出内容的风格为幽默\n" +
-                "2.输出的字数限制为100字以内"`,
+                "2.输出的字数限制为1000字范围"`,
 		},
 	})
 	if err != nil {
diff --git a/go/appbuilder/component_client_test.go b/go/appbuilder/component_client_test.go
index 5fc90d56..d90d7c6c 100644
--- a/go/appbuilder/component_client_test.go
+++ b/go/appbuilder/component_client_test.go
@@ -98,7 +98,7 @@ func TestComponentClientHeader(t *testing.T) {
 
 	componentID := "c-wf-a39ee06c-808f-4a19-9f5f-544044283749"
 	parameters := map[string]any{
-		SysOriginQuery: "梦到巨人，是怎么回事",
+		SysOriginQuery: "梦到巨人，是怎么回事，请仔细分析，写一篇不少于1000字的文章",
 	}
 	componentClient, err := NewComponentClient(config)
 	if err != nil {
diff --git a/go/appbuilder/util.go b/go/appbuilder/util.go
index 67e1b627..624a6956 100644
--- a/go/appbuilder/util.go
+++ b/go/appbuilder/util.go
@@ -16,6 +16,7 @@ package appbuilder
 
 import (
 	"bufio"
+	"bytes"
 	"errors"
 	"fmt"
 	"io"
@@ -30,42 +31,40 @@ type SSEEvent struct {
 }
 
 func checkHTTPResponse(rsp *http.Response) (string, error) {
-    requestID := rsp.Header.Get("X-Appbuilder-Request-Id")
-    if rsp.StatusCode == http.StatusOK {
-        log.Printf("Successful HTTP response. RequestID: %s", requestID)
-        return requestID, nil
-    }
+	requestID := rsp.Header.Get("X-Appbuilder-Request-Id")
+	if rsp.StatusCode == http.StatusOK {
+		log.Printf("Successful HTTP response. RequestID: %s", requestID)
+		return requestID, nil
+	}
 
-    data, err := io.ReadAll(rsp.Body)
-    if err != nil {
-        log.Printf("Failed to read response body. RequestID: %s, Error: %v", requestID, err)
-        return requestID, err
-    }
-    log.Printf("HTTP response with unexpected status code. RequestID: %s, StatusCode: %d, Content: %s", requestID, rsp.StatusCode, string(data))
-    return requestID, fmt.Errorf("http status code is %d, content is %s", rsp.StatusCode, string(data))
+	data, err := io.ReadAll(rsp.Body)
+	if err != nil {
+		log.Printf("Failed to read response body. RequestID: %s, Error: %v", requestID, err)
+		return requestID, err
+	}
+	log.Printf("HTTP response with unexpected status code. RequestID: %s, StatusCode: %d, Content: %s", requestID, rsp.StatusCode, string(data))
+	return requestID, fmt.Errorf("http status code is %d, content is %s", rsp.StatusCode, string(data))
 }
 
 func NewSSEReader(bufSize int, reader *bufio.Reader) *sseReader {
-	buf := make([]byte, bufSize)
-	return &sseReader{reader: reader, buf: buf}
+	//buf := make([]byte, bufSize)
+	return &sseReader{reader: reader, buf: bytes.Buffer{}}
 }
 
 type sseReader struct {
 	reader *bufio.Reader
-	buf    []byte
+	buf    bytes.Buffer
 }
 
 func (t *sseReader) ReadMessageLine() ([]byte, error) {
-	size := 0
+	t.buf.Reset()
 	for {
 		line, isPrefix, err := t.reader.ReadLine()
 		if err != nil {
 			return nil, err
 		}
-		if len(line)+size > cap(t.buf) {
-			panic("buffer overflow")
-		}
-		size += copy(t.buf[size:], line)
+		t.buf.Grow(len(line))
+		t.buf.Write(line)
 		if !isPrefix {
 			break
 		}
@@ -73,8 +72,8 @@ func (t *sseReader) ReadMessageLine() ([]byte, error) {
 	// 读取空行
 	line, _, err := t.reader.ReadLine()
 	if err != nil || len(line) != 0 {
-		size += copy(t.buf[size:], line)
-		return nil, errors.New(string(t.buf[0:size]))
+		t.buf.Grow(len(line))
+		return nil, errors.New(t.buf.String())
 	}
-	return t.buf[0:size], nil
+	return t.buf.Bytes(), nil
 }