Files
ai-agent/workflow/service/flow/lambda_node_util.go
qhd 03c95c3601 feat: 新增主动拉取与多类型回调功能
- 新增 ActivePull 实体、DAO、DTO 及 Service,支持主动拉取任务管理
- 新增 ComposeCallback、VideoCallback、HttpNodeCallback 多类型回调接口
- FlowExecution 增加 NodeGroupId 和 TotalTokens 字段,支持节点组追踪与 Token 统计
- ExecutedNodes 结构由字符串列表改为包含执行状态的节点对象列表
- 重构回调通知机制,统一 Notify 函数调用
- 优化输出项类型判断逻辑,新增文件类型标识
2026-06-10 14:23:55 +08:00

833 lines
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package flow
import (
"ai-agent/workflow/consts/node"
nodeDao "ai-agent/workflow/dao/node"
"ai-agent/workflow/model/dto"
flowDto "ai-agent/workflow/model/dto/flow"
nodeDto "ai-agent/workflow/model/dto/node"
"ai-agent/workflow/model/entity"
"bytes"
"context"
"fmt"
"io"
"mime/multipart"
"net/http"
"net/url"
"path/filepath"
"regexp"
"strconv"
"strings"
"sync"
commonHttp "gitea.com/red-future/common/http"
"gitea.com/red-future/common/utils"
"github.com/gogf/gf/v2/errors/gerror"
"github.com/gogf/gf/v2/frame/g"
"github.com/gogf/gf/v2/util/gconv"
"github.com/tidwall/sjson"
)
// 全局等待任务回调的工具
var (
asyncMu sync.Mutex
asyncTasks = make(map[string]chan any)
)
// Wait 阻塞等待回调结果
// 调用后会一直卡住,直到 Notify 唤醒 或 超时/取消
func Wait(ctx context.Context, taskId string) (any, error) {
asyncMu.Lock()
ch := make(chan any, 1)
asyncTasks[taskId] = ch
asyncMu.Unlock()
defer close(ch)
for {
select {
case result := <-ch:
return result, nil
case <-ctx.Done():
asyncMu.Lock()
delete(asyncTasks, taskId)
asyncMu.Unlock()
return nil, ctx.Err()
}
}
}
// Notify 回调时调用,唤醒等待的任务
func Notify(taskId string, result any) {
asyncMu.Lock()
defer asyncMu.Unlock()
ch, exist := asyncTasks[taskId]
if !exist {
return
}
ch <- result
delete(asyncTasks, taskId)
}
func GetIsChatModel(ctx context.Context) (res *flowDto.GetIsChatModelRes, err error) {
headers := make(map[string]string)
if r := g.RequestFromCtx(ctx); r != nil {
for k, v := range r.Request.Header {
if len(v) > 0 {
headers[k] = v[0]
}
}
}
res = new(flowDto.GetIsChatModelRes)
err = commonHttp.Get(ctx, "model-gateway/model/getIsChatModel", headers, res, nil)
return
}
func GetModelInfo(ctx context.Context, req *flowDto.GetModelInfoReq) (res *flowDto.GetModelInfoRes, err error) {
headers := make(map[string]string)
if r := g.RequestFromCtx(ctx); r != nil {
for k, v := range r.Request.Header {
if len(v) > 0 {
headers[k] = v[0]
}
}
}
res = new(flowDto.GetModelInfoRes)
err = commonHttp.Get(ctx, "model-gateway/model/getModel", headers, res, req)
return
}
func GetComposeResult(ctx context.Context, buildType int, modelName, promptContent, skillName string, form []map[string]any, userForm []map[string]any, fileUrl []string, sessionId, nodeId string, cause string) (res *flowDto.ComposeCallbackReq, err error) {
if !g.IsEmpty(promptContent) {
userForm = append(userForm, map[string]any{
"prompt": promptContent,
})
}
var callbackUrl = utils.GetCallbackURL(ctx, "/flow/execution/composeCallBack")
var consult = make([]flowDto.Consult, 0)
var collectFileUrls func(val any)
collectFileUrls = func(val any) {
switch {
case g.NewVar(val).IsSlice():
slice := gconv.SliceAny(val)
for _, item := range slice {
collectFileUrls(item)
}
case g.NewVar(val).IsMap():
m := gconv.Map(val)
for _, item := range m {
collectFileUrls(item)
}
default:
s := gconv.String(val)
if s != "" {
getFileTypeByPath := GetFileTypeByPath(s)
if getFileTypeByPath != "" {
consult = append(consult, flowDto.Consult{
Type: getFileTypeByPath,
Url: s,
})
}
}
}
}
for _, m := range userForm {
for _, v := range gconv.Map(m) {
collectFileUrls(v)
}
}
for _, v := range fileUrl {
getFileTypeByPath := GetFileTypeByPath(gconv.String(v))
if getFileTypeByPath != "" {
consult = append(consult, flowDto.Consult{
Type: getFileTypeByPath,
Url: gconv.String(v),
})
}
}
msgReq := flowDto.ComposeMessagesReq{
BuildType: buildType,
ModelName: modelName,
SkillName: skillName,
CallbackUrl: callbackUrl,
Cause: cause,
Form: form,
UserForm: userForm,
Consult: consult,
SessionId: sessionId,
NodeId: nodeId,
}
headers := make(map[string]string)
if r := g.RequestFromCtx(ctx); r != nil {
for k, v := range r.Request.Header {
if len(v) > 0 {
headers[k] = v[0]
}
}
}
msgRes := new(flowDto.ComposeMessagesRes)
err = commonHttp.Post(ctx, "prompts-core/prompt/composeMessages", headers, msgRes, &msgReq)
if err != nil {
return
}
if g.IsEmpty(msgRes.TaskId) {
return nil, fmt.Errorf("msg is empty")
}
waitRes, err := Wait(ctx, msgRes.TaskId)
if err != nil {
return nil, err
}
msg := new(flowDto.ComposeCallbackReq)
if err = gconv.Struct(waitRes, msg); err != nil {
return nil, err
}
if !g.IsEmpty(msg.ErrorMsg) {
return nil, fmt.Errorf(msg.ErrorMsg)
}
return msg, nil
}
func CreateGatewayTask(ctx context.Context, epicycleId int64, model string, content map[string]any) (map[string]any, error) {
taskId, err := createGatewayTaskOnly(ctx, epicycleId, model, content)
if err != nil {
return nil, err
}
return waitGatewayResult(ctx, taskId)
}
// createGatewayTaskOnly creates a gateway task and returns the taskId only
// doesn't wait for completion
func createGatewayTaskOnly(ctx context.Context, epicycleId int64, model string, content map[string]any) (string, error) {
callbackUrl := utils.GetCallbackURL(ctx, "/flow/execution/modelCallback")
req := flowDto.ModelGatewayReq{
ModelName: model,
BizName: g.Cfg().MustGet(ctx, "server.name").String(),
CallbackUrl: callbackUrl,
RequestPayload: content,
EpicycleId: epicycleId,
}
headers := make(map[string]string)
if r := g.RequestFromCtx(ctx); r != nil {
for k, v := range r.Request.Header {
if len(v) > 0 {
headers[k] = v[0]
}
}
}
res := new(flowDto.ModelGatewayRes)
err := commonHttp.Post(ctx, "model-gateway/task/createTask", headers, res, &req)
if err != nil {
return "", err
}
if g.IsEmpty(res.TaskId) {
return "", fmt.Errorf("创建模型任务失败taskId为空")
}
return res.TaskId, nil
}
// waitGatewayResult waits for a created gateway task to complete and returns the result
func waitGatewayResult(ctx context.Context, taskId string) (map[string]any, error) {
waitRes, err := Wait(ctx, taskId)
if err != nil {
return nil, err
}
task := new(flowDto.ModelCallbackReq)
if err := gconv.Struct(waitRes, task); err != nil {
return nil, err
}
if task.State == 3 || !g.IsEmpty(task.ErrorMsg) {
return nil, fmt.Errorf("模型执行失败:%s", task.ErrorMsg)
}
if g.IsEmpty(task.Messages) {
return nil, fmt.Errorf("模型返回结果为空")
}
return task.Messages, nil
}
// updateTokenCount updates the token count in node execution
func updateTokenCount(ctx context.Context, nodeExecutionId int64, responseField string, result map[string]any) {
if responseField == "" {
return
}
_, _ = nodeDao.NodeExecutionDao.Update(ctx, &nodeDto.UpdateNodeExecutionReq{
Id: nodeExecutionId,
CompletionTokens: gconv.Int(result[responseField]),
TotalTokens: gconv.Int(result[responseField]),
})
}
func GetModelResult(ctx context.Context, sessionId string, nodeInput *flowDto.NodeExecutionInput, skillName string, form []map[string]any, userForm []map[string]any) (mapTaskResult []map[string]any, err error) {
buildType := 1
if nodeInput.Config.NodeCode == node.NodeTypeDataConversionModel {
buildType = 3
}
composeResult, err := GetComposeResult(ctx, buildType, nodeInput.Config.ModelConfig.ModelName, nodeInput.Config.PromptContent, skillName, form, userForm, nodeInput.Global.FileUrl, sessionId, nodeInput.Config.Id, nodeInput.Config.Name)
if err != nil {
return nil, err
}
modelInfo, err := GetModelInfo(ctx, &flowDto.GetModelInfoReq{ModelName: nodeInput.Config.ModelConfig.ModelName})
if err != nil {
return nil, err
}
mapTaskResult = make([]map[string]any, len(composeResult.Messages.Rounds))
var taskResultMap map[string]any
needSequential := false
if buildType == 1 {
if needSequential {
for idx, item := range composeResult.Messages.Rounds {
if !g.IsEmpty(taskResultMap) {
var set string
set, err = sjson.Set(gconv.String(item), modelInfo.Model.LastFrame, gconv.String(taskResultMap[modelInfo.Model.ResponseBody]))
if err != nil {
return nil, err
}
item = gconv.Map(set)
}
var taskResult map[string]any
taskResult, err = CreateGatewayTask(ctx, composeResult.EpicycleId, nodeInput.Config.ModelConfig.ModelName, item)
if err != nil {
return nil, err
}
if g.IsEmpty(taskResult) {
return nil, fmt.Errorf("模型返回结果为空")
}
// Update taskResultMap for next round (used by VideoModel)
if nodeInput.Config.NodeCode == node.NodeTypeVideoModel {
ext := GetFileTypeByPath(gconv.String(taskResult[modelInfo.Model.ResponseBody]))
if ext == "image" {
taskResultMap = taskResult
} else {
taskResultMap = make(map[string]any)
}
} else {
taskResultMap = make(map[string]any)
}
mapTaskResult[idx] = taskResult
updateTokenCount(ctx, nodeInput.NodeExecutionId, modelInfo.Model.ResponseTokenField, taskResult)
}
} else {
taskIdList := make([]string, len(composeResult.Messages.Rounds))
for idx, item := range composeResult.Messages.Rounds {
var taskId string
taskId, err = createGatewayTaskOnly(ctx, composeResult.EpicycleId, nodeInput.Config.ModelConfig.ModelName, item)
if err != nil {
return nil, err
}
taskIdList[idx] = taskId
}
// Step 2: Wait for all tasks in parallel
var wg sync.WaitGroup
errChan := make(chan error, len(taskIdList))
for idx, taskId := range taskIdList {
wg.Add(1)
// Pass idx and taskId as parameters to avoid loop variable capture bug
// This guarantees results are stored in the correct order matching original requests
go func(idx int, taskId string) {
defer wg.Done()
var taskResult map[string]any
taskResult, err = waitGatewayResult(ctx, taskId)
if err != nil {
errChan <- err
return
}
mapTaskResult[idx] = taskResult
updateTokenCount(ctx, nodeInput.NodeExecutionId, modelInfo.Model.ResponseTokenField, taskResult)
}(idx, taskId)
}
wg.Wait()
close(errChan)
if len(errChan) > 0 {
return nil, <-errChan
}
}
} else {
for idx, item := range composeResult.Messages.Rounds {
mapTaskResult[idx] = item
updateTokenCount(ctx, nodeInput.NodeExecutionId, modelInfo.Model.ResponseTokenField, item)
}
}
return mapTaskResult, nil
}
func BuildNestedJson(body g.Map, mockConfigMap map[string]*entity.FlowNode) g.Map {
jsonStr := "{}"
for originKey, originItem := range body {
bodyItemMap := gconv.Map(originItem)
val := bodyItemMap["value"]
if v, ok := bodyItemMap["value"]; ok {
jsonStr, _ = sjson.Set(jsonStr, originKey, v)
}
// 判断 value 是不是引用结构map
if g.NewVar(val).IsMap() {
valMap := gconv.Map(val)
nodeId := gconv.String(valMap["nodeId"])
fieldName := gconv.String(valMap["field"])
if configValue, ok := mockConfigMap[nodeId]; ok {
if !g.IsEmpty(configValue.OutputResult) {
for _, v := range configValue.OutputResult {
if strings.Contains(v.Field, fieldName) {
if configValue.NodeCode == node.NodeTypeDataConversionModel {
switch {
case g.NewVar(v.Value).IsSlice() || g.NewVar(v.Value).IsMap():
// 核心:自动判断两种结构,精准赋值
vm := gconv.Map(v.Value)
// 先判断是否是 单个key包裹的对象如 {"subtitle_style": {...}}
if len(vm) == 1 {
// 遍历取出唯一的 key 和 真实值
for innerKey, innerVal := range vm {
// 直接用 innerKeysubtitle_style赋值
jsonStr, _ = sjson.Set(jsonStr, innerKey, innerVal)
}
} else {
// 直接是对象,用 originKey 赋值
jsonStr, _ = sjson.Set(jsonStr, originKey, v.Value)
}
default:
jsonStr, _ = sjson.Set(jsonStr, originKey, v.Value)
}
} else {
jsonStr, _ = sjson.Set(jsonStr, originKey, v.Value)
}
}
}
}
if !g.IsEmpty(configValue.FormConfig) {
for _, v := range configValue.FormConfig {
if v.Field == fieldName {
if v.Type == "uploadMultiple" {
if g.NewVar(v.FieldConstraint).IsMap() {
mapFieldConstraint := gconv.Map(v.FieldConstraint)
for key, value := range mapFieldConstraint {
if key == "maxFileCount" {
if gconv.Int(value) == 1 {
// 如果是单文件上传则替换成字符串重新赋值给v.Value
if g.NewVar(v.Value).IsSlice() {
sliceVal := gconv.SliceAny(v.Value)
if len(sliceVal) > 0 {
v.Value = sliceVal[0]
}
}
}
}
}
}
}
jsonStr, _ = sjson.Set(jsonStr, originKey, v.Value)
}
}
}
}
}
}
return gconv.Map(jsonStr)
}
func VideoConcat(ctx context.Context, videoUrls []string) (r any, err error) {
var httpUrl = "media/video/concat/async"
headers := make(map[string]string)
if r := g.RequestFromCtx(ctx); r != nil {
for k, v := range r.Request.Header {
if len(v) > 0 {
headers[k] = v[0]
}
}
}
var callbackUrl = utils.GetCallbackURL(ctx, "/flow/execution/videoCallback")
var newBody = flowDto.VideoConcatReq{
VideoUrls: videoUrls,
Method: "auto",
Upload: true,
CallbackUrl: callbackUrl,
}
res := new(flowDto.VideoConcatRes)
err = commonHttp.Post(ctx, httpUrl, headers, &res, newBody)
if err != nil {
return nil, err
}
return Wait(ctx, res.TaskId)
}
func GetFileBytesFromURL(ctx context.Context, fileUrl string) ([]byte, error) {
// 使用 GoFrame 客户端(自带超时、追踪、日志等能力)
resp, err := g.Client().Get(ctx, fileUrl)
if err != nil {
return nil, gerror.Wrapf(err, "failed to request url: %s", fileUrl)
}
defer resp.Close()
// 校验状态码
if resp.StatusCode != http.StatusOK {
return nil, gerror.Newf("request failed with status code: %d, url: %s", resp.StatusCode, fileUrl)
}
// 读取全部内容
allBytes, err := io.ReadAll(resp.Body)
if err != nil {
return nil, gerror.Wrapf(err, "failed to read response body, url: %s", fileUrl)
}
return allBytes, nil
}
func Upload(ctx context.Context, req *dto.UploadFileBytesReq) (*dto.UploadFileBytesRes, error) {
body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
part, err := writer.CreateFormFile("file", req.FileName)
if err != nil {
return nil, err
}
if _, err = part.Write(req.FileBytes); err != nil {
return nil, err
}
if err = writer.Close(); err != nil {
return nil, err
}
headers := make(map[string]string)
headers["Content-Type"] = writer.FormDataContentType()
if r := g.RequestFromCtx(ctx); r != nil {
if auth := r.Header.Get("Authorization"); auth != "" {
headers["Authorization"] = auth
}
}
// 发起上传请求
res := &dto.UploadFileBytesRes{}
httpUrl := "oss/file/uploadFile"
if err = commonHttp.Post(ctx, httpUrl, headers, res, body.Bytes()); err != nil {
return nil, err
}
g.Log().Infof(ctx, "[Upload] success url=%s size=%d", res.FileURL, res.FileSize)
return res, nil
}
func GetFileTypeByPath(filePath string) string {
if filePath == "" {
return ""
}
// 解析 URL获取真实路径兼容 http 链接)
u, err := url.Parse(filePath)
if err == nil {
filePath = u.Path
}
// 获取后缀(小写)
ext := filepath.Ext(filePath)
ext = strings.ToLower(ext)
// 判断类型
switch ext {
case ".jpg", ".jpeg", ".png", ".gif", ".bmp", ".webp":
return "image"
case ".mp4", ".mov", ".avi", ".flv", ".wmv", ".mkv":
return "video"
case ".mp3", ".wav", ".m4a", ".flac", ".aac", ".ogg":
return "audio"
case ".txt", ".md", ".log", ".json", ".xml", ".inc":
return "text"
case ".html":
return "html"
case ".pdf", ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx":
return "document"
default:
return ""
}
}
func BuildText(text string) string {
// 生成单条HTML
var htmlBuilder strings.Builder
htmlBuilder.WriteString(`
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
background: #f5f5f5;
color: #333;
line-height: 1.8;
padding: 20px;
}
.container {
max-width: 900px;
margin: 0 auto;
background: #fff;
border-radius: 12px;
box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
overflow: hidden;
}
.item {
padding: 30px;
}
.image-group img {
width: 100%;
height: auto;
display: block;
margin-bottom: 6px;
border-radius: 8px;
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.image-group img:last-child {
margin-bottom: 0;
}
.image-group {
margin-bottom: 25px;
}
.text {
padding: 0;
font-size: 15px;
line-height: 1.4;
color: #555;
}
.text h2 {
font-size: 28px;
font-weight: bold;
color: #1a1a1a;
margin-bottom: 15px;
line-height: 1.2;
}
.text h3 {
font-size: 20px;
font-weight: 600;
color: #2c3e50;
margin: 20px 0 12px;
padding-left: 12px;
border-left: 4px solid #409eff;
}
.text p {
margin-bottom: 12px;
text-align: justify;
}
.text strong {
color: #e74c3c;
font-weight: 600;
}
.text ul {
list-style: none;
padding: 0;
margin: 8px 0;
}
.text ul li {
padding: 10px 0 10px 30px;
position: relative;
line-height: 1.2;
}
.text ul li:before {
content: "●";
color: #409eff;
font-size: 12px;
position: absolute;
left: 12px;
top: 12px;
}
@media (max-width: 768px) {
body {
padding: 10px;
}
.text h2 {
font-size: 24px;
}
.text h3 {
font-size: 18px;
}
}
</style>
</head>
<body>
<div class="container">
<div class="item">
`)
// 🔥 写入文案前:删除 <p class="image-count">需要配图X 张</p>
if text != "" {
// 写入清理后的文案
htmlBuilder.WriteString(fmt.Sprintf(`<div class="text">%s</div>`, ImageTagRegex(text)))
}
htmlBuilder.WriteString(`</div>
</div>
</body>
</html>`)
return htmlBuilder.String()
}
func BuildHtml(text string, images []string) string {
var htmlBuilder strings.Builder
htmlBuilder.WriteString(`<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: "Microsoft YaHei", sans-serif;
padding: 20px;
background-color: #f6f6f6;
line-height: 1.7;
font-size: 16px;
color: #333;
}
.container {
max-width: 750px;
margin: 0 auto;
background: #fff;
padding: 30px;
border-radius: 12px;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}
</style>
</head>
<body>
<div class="container">
`)
// 写入图片支持0张、1张、多张
if len(images) > 0 {
htmlBuilder.WriteString(`<div class="image-group">`)
for _, imgUrl := range images {
htmlBuilder.WriteString(fmt.Sprintf(`<img src="%s" alt="图片"/>`, imgUrl))
}
htmlBuilder.WriteString(`</div>`)
}
htmlBuilder.WriteString(`
<div id="content">加载中...</div>
</div>
<script>
const incUrl = "` + text + `";
fetch(incUrl)
.then(res => {
if (!res.ok) throw new Error("加载失败");
return res.text();
})
.then(text => {
document.getElementById("content").innerHTML = text;
})
.catch(err => {
document.getElementById("content").innerHTML = "加载失败:" + err.message;
});
</script>
</body>
</html>`)
return htmlBuilder.String()
}
// ExtractImageCount 修复:支持单引号/双引号 + 换行 + 空格
func ExtractImageCount(content string) int {
// 🔥 关键:支持 class='image-count' (单引号)
re := regexp.MustCompile(`<p class=['"]image-count['"][^>]*>.*?(\d+).*?</p>`)
match := re.FindStringSubmatch(content)
if len(match) >= 2 {
num, err := strconv.Atoi(match[1])
if err == nil {
return num
}
}
return 0
}
func ImageTagRegex(html string) string {
// 🔥 修复支持单引号、双引号、空格、换行100% 删除 <p class='image-count'>
imageTagRegex := regexp.MustCompile(`<p class=['"]image-count['"][^>]*>[\s\S]*?</p>`)
return imageTagRegex.ReplaceAllString(html, "")
}
// StripHtmlTags 去掉所有HTML标签保留换行和文本结构并删除配图标记行
func StripHtmlTags(html string) string {
// 1. 替换块级标签为换行,保证排版
blockTags := regexp.MustCompile(`</?(div|p|h1|h2|h3|h4|h5|h6|li|ul|ol|br|tr|td|th)[^>]*>`)
text := blockTags.ReplaceAllString(html, "\n")
// 2. 去掉所有剩余的 HTML 标签
allTags := regexp.MustCompile(`<[^>]+>`)
text = allTags.ReplaceAllString(text, "")
// 4. 清理多余空行(多个换行只保留一个)
text = regexp.MustCompile(`\n\s*\n`).ReplaceAllString(text, "\n")
// 5. 只去掉首尾空白,中间换行保留
text = strings.TrimSpace(text)
return text
}
// SplitMultiContents 拆分模型返回的多条文案基于HTML标签分隔
func SplitMultiContents(htmlContent string) []string {
var contents []string
// 正则匹配<div class="content-item" id="content-{序号}">包裹的内容
re := regexp.MustCompile(`<div class="content-item" id="content-\d+">([\s\S]*?)</div>`)
matches := re.FindAllStringSubmatch(htmlContent, -1)
for _, match := range matches {
if len(match) > 1 {
// 清理空内容
trimmed := strings.TrimSpace(match[1])
if trimmed != "" {
contents = append(contents, trimmed)
}
}
}
// 兜底:如果没有匹配到结构化内容,按换行/分隔符拆分
if len(contents) == 0 {
contents = strings.Split(htmlContent, "===分隔符===") // 提示词中可新增此兜底规则
}
return contents
}
// GetAllImgSrcFromHtml 先把提取img src的工具方法放在外面
func GetAllImgSrcFromHtml(html string) []string {
var imgSrcList []string
re := regexp.MustCompile(`<img[^>]*src\s*=\s*["']([^"']+)["']`)
submatch := re.FindAllStringSubmatch(html, -1)
for _, match := range submatch {
if len(match) >= 2 {
imgSrcList = append(imgSrcList, match[1])
}
}
return imgSrcList
}
// ReplaceImgSrc 替换img src的方法
func ReplaceImgSrc(html string, oldSrc string, newSrc string) string {
// 精准替换:找到 <img xxx src="oldSrc" xxx>
re := regexp.MustCompile(`(<img[^>]*src\s*=\s*["'])` + regexp.QuoteMeta(oldSrc) + `(["'])`)
return re.ReplaceAllString(html, `${1}`+newSrc+`${2}`)
}