success('请求成功'); } /** * 图生文接口 */ public function img_to_txt() { $params = $this->request->param(); $prompt = trim($params['prompt']); $old_path = trim($params['path']); $model = trim($params['model']); $status_val = trim($params['status_val']); // 参数验证 if (empty($prompt) || empty($old_path) || empty($model)) { return json([ 'code' => 1, 'msg' => '缺少必要参数', 'data' => null ]); } $aiGateway = new AIGatewayService(); // 获取图片的base64数据和MIME类型 $imageData = AIGatewayService::file_get_contents($old_path); $base64Data = $imageData['base64Data']; $mimeType = $imageData['mimeType']; $formattedPrompt = "1. 输出语言:所有内容必须为纯简体中文,禁止出现任何英文、拼音、数字、注释、解释性文字、引导语、示例、标点外的特殊符号; 2. 第一步(提取原图产品): - 用1句完整中文描述原图产品,字数控制在50字以内; - 必须包含「主体细节、产品名称、商标、类型、颜色、风格」核心; 3. 第二步(生成新图提示词): - 仅替换【模板提示词】中「产品主体」相关内容为第一步的产品描述; - 严格保留模板中「设计风格、光影、背景、比例、排版」等非产品相关信息; - 完全排除模板中的标题类信息,仅保留提示词核心内容; - 替换后必须完全保留原图产品的核心特征,禁止修改模板非产品核心信息; 4. 输出格式:不允许添加任何解释、引导、说明、示例、备注,仅返回「产品描述 + 替换后提示词」,直接输出纯文本; 【模板提示词】{$prompt}"; $result = $aiGateway->callGptApi($model, $formattedPrompt, $mimeType, $base64Data); // Gemini模型响应格式处理 $imgToTxtContent = $result['candidates'][0]['content']['parts'][0]['text']; // // 图生文成功后,调用文生文功能(gemini-2.0-flash) $txtToTxtPrompt = "转换成中文格式,去掉其他特殊符号,不允许添加任何解释、引导、说明、示例等文字:\n\n{$imgToTxtContent}"; $txtToTxtResult = $aiGateway->txtGptApi($txtToTxtPrompt, 'gemini-2.0-flash'); $finalContent = $txtToTxtResult['candidates'][0]['content']['parts'][0]['text']; // 处理调试输出内容 $debugContent = json_encode($finalContent, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT); // 去掉特殊符号(只保留字母、数字、中文、常用标点和换行) $debugContent = preg_replace('/[^\p{Han}\w\s\n\r\.,,。!!??\-\::;;]/u', '', $debugContent); // 去掉第一个冒号前的文字 $debugContent = preg_replace('/^[^:]+:/', '', $debugContent); return json([ 'code' => 0, 'msg' => '处理成功', 'data' => [ 'content' => $debugContent, 'english_content' => $imgToTxtContent ] ]); } /** * 文生图接口 */ public function txt_to_img() { $params = $this->request->param(); $prompt = trim($params['prompt']); $model = trim($params['model']); $status_val = trim($params['status_val']); $size = trim($params['size']); // 获取产品信息 $product = Db::name('product')->where('id', 1)->find(); if (empty($product)) { return json([ 'code' => 1, 'msg' => '产品不存在', 'data' => null ]); } $product_code = $product['product_code']; $product_code_prefix = substr($product_code, 0, 9); // 前九位 // 构建URL路径(使用正斜杠) $url_path = '/uploads/merchant/' . $product_code_prefix . '/' . $product_code . '/newimg/'; // 构建物理路径(使用正斜杠确保统一格式) $save_path = ROOT_PATH . 'public' . '/' . 'uploads' . '/' . 'merchant' . '/' . $product_code_prefix . '/' . $product_code . '/' . 'newimg' . '/'; // 移除ROOT_PATH中可能存在的反斜杠,确保统一使用正斜杠 $save_path = str_replace('\\', '/', $save_path); // 自动创建文件夹(如果不存在) if (!is_dir($save_path)) { mkdir($save_path, 0755, true); } // 调用AI生成图片 $aiGateway = new AIGatewayService(); $res = $aiGateway->callDalleApi($prompt, $model, $size); // 提取base64图片数据 if (isset($res['candidates'][0]['content']['parts'][0]['text'])) { $text_content = $res['candidates'][0]['content']['parts'][0]['text']; // 匹配base64图片数据 preg_match('/data:image\/(png|jpg|jpeg);base64,([^"]+)/', $text_content, $matches); if (empty($matches)) { return json([ 'code' => 1, 'msg' => '未找到图片数据', 'data' => null ]); } $image_type = $matches[1]; $base64_data = $matches[2]; // 解码base64数据 $image_data = base64_decode($base64_data); if ($image_data === false) { return json([ 'code' => 1, 'msg' => '图片解码失败', 'data' => null ]); } // 生成唯一文件名(包含扩展名) $file_name = uniqid() . '.' . $image_type; $full_file_path = $save_path . $file_name; // 保存图片到文件系统 if (!file_put_contents($full_file_path, $image_data)) { return json([ 'code' => 1, 'msg' => '图片保存失败', 'data' => null ]); } // 生成数据库存储路径(使用正斜杠格式) $db_img_path = $url_path . $file_name; Db::name('product')->where('id', 1)->update(['product_new_img' => $db_img_path]); return json([ 'code' => 0, 'msg' => '文生图请求成功并保存图片', 'data' => [ 'img' => $db_img_path, 'product_id' => 1 ] ]); } else { return json([ 'code' => 1, 'msg' => 'AI返回格式错误', 'data' => null ]); } } /** * 图生图:gemini-3-pro-image-preview * 产品图 + 参考模板图 + 提示词 → 生成新图 * 接口访问路径:http://mes-ai-api:9091/index.php/api/Index/img_to_img(POST请求) * 参数:product_img, template_img(图片路径如 /uploads/merchant/xxx/xxx.png),prompt(可选),model(可选) */ public function img_to_img() { try { // ========== 1. 基础配置 ========== $apiUrl = 'https://chatapi.onechats.ai/v1beta/models/gemini-3-pro-image-preview:generateContent'; $apiKey = 'sk-IrIWvqkTs8DwvB9MFBRSWKQHdZRawNeKTnVPHjAJ0KryBWeF'; // ========== 2. 获取请求参数(兼容 $_REQUEST,与本地测试脚本一致)========== $params = array_merge($_REQUEST, $this->request->param()); $productImgRaw = trim($params['product_img'] ?? '/uploads/merchant/690377511/6903775111138/oldimg/伊利牛奶.png'); $templateImgRaw = trim($params['template_img'] ?? '/uploads/template/2026-03-06/69aa45a34161f_20260306111027.png'); $customPrompt = trim($params['prompt'] ?? ''); if (empty($productImgRaw) || empty($templateImgRaw)) { $this->json_response(['code' => 1, 'msg' => '缺少必要参数:product_img、template_img', 'data' => null]); } // 将 /uploads/xxx 或 uploads/xxx 转为本地绝对路径 $productImgPath = $this->resolveImagePath($productImgRaw); $templateImgPath = $this->resolveImagePath($templateImgRaw); // ========== 3. 提示词 ========== $prompt = $customPrompt ?: '请完成产品模板替换: 1. 从产品图提取产品主体、品牌名称、核心文案; 2. 从模板图继承版式布局、文字排版、色彩风格、背景元素; 3. 将模板图中的产品和文字替换为产品图的内容; 4. 最终生成的图片与模板图视觉风格100%统一,仅替换产品和文字。'; // ========== 4. 图片转Base64 ========== $productImg = $this->img_to_base64($productImgPath); if (isset($productImg['error'])) { $this->json_response(['code' => 1, 'msg' => '[步骤1]产品图加载失败:' . $productImg['error'], 'data' => ['path' => $productImgRaw]]); } $templateImg = $this->img_to_base64($templateImgPath); if (isset($templateImg['error'])) { $this->json_response(['code' => 1, 'msg' => '[步骤2]模板图加载失败:' . $templateImg['error'], 'data' => ['path' => $templateImgRaw]]); } // ========== 5. 构造请求参数 ========== $requestData = [ 'contents' => [ [ 'role' => 'user', 'parts' => [ ['text' => $prompt], ['inlineData' => ['mimeType' => $productImg['mime'], 'data' => $productImg['base64']]], ['inlineData' => ['mimeType' => $templateImg['mime'], 'data' => $templateImg['base64']]] ] ] ], 'generationConfig' => [ 'responseModalities' => ['IMAGE'], 'imageConfig' => [ 'aspectRatio' => '5:4', 'quality' => 'HIGH', 'width' => 1000, 'height' => 800 ], 'temperature' => 0.3, 'topP' => 0.8, 'maxOutputTokens' => 2048 ] ]; // ========== 6. 发起CURL请求 ========== $ch = curl_init(); curl_setopt_array($ch, [ CURLOPT_URL => $apiUrl, CURLOPT_RETURNTRANSFER => true, CURLOPT_POST => true, CURLOPT_POSTFIELDS => json_encode($requestData, JSON_UNESCAPED_UNICODE), CURLOPT_HTTPHEADER => [ 'Content-Type: application/json', 'Authorization: Bearer ' . $apiKey ], CURLOPT_TIMEOUT => 300, CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false ]); $response = curl_exec($ch); $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE); $curlErr = curl_error($ch); curl_close($ch); // ========== 7. 错误处理 ========== if ($curlErr) { $this->json_response(['code' => 1, 'msg' => '[步骤3]CURL请求失败:' . $curlErr, 'data' => null]); } if ($httpCode != 200) { $errDetail = is_string($response) ? substr($response, 0, 800) : json_encode($response); $this->json_response(['code' => 1, 'msg' => '[步骤4]API调用失败 HTTP' . $httpCode . ',可能原因:API Key过期/无效、配额不足、请求格式错误。响应:' . $errDetail, 'data' => null]); } // ========== 8. 解析响应 ========== $result = json_decode($response, true); if (json_last_error() !== JSON_ERROR_NONE) { $this->json_response(['code' => 1, 'msg' => '[步骤5]API响应非JSON格式:' . json_last_error_msg(), 'data' => ['raw' => substr($response, 0, 300)]]); } // ========== 9. 提取图片数据 ========== $base64Data = null; $imageType = 'png'; if (isset($result['candidates'][0]['content']['parts'][0]['inlineData']['data'])) { $base64Data = $result['candidates'][0]['content']['parts'][0]['inlineData']['data']; } elseif (isset($result['candidates'][0]['content']['parts'][0]['text'])) { $text = $result['candidates'][0]['content']['parts'][0]['text']; if (preg_match('/data:image\/(png|jpg|jpeg|webp);base64,([^\s"\']+)/i', $text, $m)) { $imageType = $m[1]; $base64Data = $m[2]; } } if (!$base64Data) { $errMsg = isset($result['error']['message']) ? $result['error']['message'] : '响应结构异常'; $this->json_response(['code' => 1, 'msg' => '[步骤6]未获取到图片数据。' . $errMsg . '。完整响应见data', 'data' => $result]); } // ========== 10. 保存图片到 uploads/ceshi/ ========== $imageData = base64_decode($base64Data); if ($imageData === false || strlen($imageData) < 100) { $this->json_response(['code' => 1, 'msg' => '[步骤7]图片Base64解码失败', 'data' => null]); } $saveDir = str_replace('\\', '/', ROOT_PATH . 'public/uploads/ceshi/'); if (!is_dir($saveDir)) { mkdir($saveDir, 0755, true); } $fileName = 'img2img-' . date('YmdHis') . '-' . uniqid() . '.' . $imageType; $fullPath = $saveDir . $fileName; if (!file_put_contents($fullPath, $imageData)) { $this->json_response(['code' => 1, 'msg' => '[步骤8]图片保存失败,请检查目录权限:' . $saveDir, 'data' => null]); } // ========== 11. 返回成功响应(返回可访问的Web路径) ========== $webPath = '/uploads/ceshi/' . $fileName; $this->json_response([ 'code' => 0, 'msg' => '图生图成功', 'data' => ['image' => $webPath] ]); } catch (\Exception $e) { $this->json_response(['code' => 1, 'msg' => '[步骤9]图生图失败:' . $e->getMessage(), 'data' => null]); } } /** * 将接口传入的图片路径转为本地绝对路径(与本地测试脚本逻辑一致) * 支持:/uploads/xxx、uploads/xxx、public/uploads/xxx、或已是绝对路径 * @param string $path 接口传入的路径 * @return string 本地文件系统绝对路径 */ private function resolveImagePath($path) { $path = trim($path); if (empty($path)) { return ''; } // 已是绝对路径且文件存在,直接返回(兼容本地测试传入的完整路径) $pathNorm = str_replace('\\', '/', $path); if (preg_match('#^[a-zA-Z]:/#', $pathNorm) || (strlen($pathNorm) > 1 && $pathNorm[0] === '/' && $pathNorm[1] !== '/')) { if (file_exists($path)) { return $pathNorm; } } // 统一为相对于 public 的路径:uploads/xxx $relPath = ltrim($pathNorm, '/'); if (strpos($relPath, 'public/') === 0) { $relPath = substr($relPath, 7); // 去掉 public/ } if (strpos($relPath, 'uploads/') !== 0) { $relPath = 'uploads/' . ltrim($relPath, '/'); } $fullPath = rtrim(str_replace('\\', '/', ROOT_PATH), '/') . '/public/' . $relPath; return $fullPath; } /** * 辅助函数:返回JSON响应 * @param array $data 响应数据 */ private function json_response($data) { header('Content-Type: application/json; charset=utf-8'); echo json_encode($data, JSON_UNESCAPED_UNICODE); exit; } /** * 辅助函数:图片URL/本地路径转Base64 * @param string $imgPath 图片URL/本地路径 * @return array 成功 ['mime','base64'] 失败 ['error'=>'错误信息'] */ private function img_to_base64($imgPath) { $imgContent = @file_get_contents($imgPath); if (!$imgContent) { return ['error' => '图片读取失败,请检查URL可访问性:' . $imgPath]; } $finfo = new \finfo(FILEINFO_MIME_TYPE); $mime = $finfo->buffer($imgContent); if (!in_array($mime, ['image/png', 'image/jpeg', 'image/jpg', 'image/webp'])) { return ['error' => '不支持的图片格式:' . $mime . ',仅支持png/jpeg/webp']; } // 规范 MIME:Gemini 要求 image/jpeg 而非 image/jpg if ($mime === 'image/jpg') { $mime = 'image/jpeg'; } // 去除 base64 中的空白字符,避免「格式错误」 $base64 = preg_replace('/\s+/', '', base64_encode($imgContent)); return ['mime' => $mime, 'base64' => $base64]; } /** * 图生图本地测试 */ public function imgtowimg() { $prompt = $this->request->param('prompt', ''); $imgRelPath = 'uploads/operate/ai/Preview/arr/0835006071623.png'; $imgPath = ROOT_PATH . 'public/' . $imgRelPath; if (!file_exists($imgPath)) { return json(['code' => 1, 'msg' => '原图不存在:' . $imgRelPath]); } $imgData = file_get_contents($imgPath); $base64Img = 'data:image/png;base64,' . base64_encode($imgData); $params = [ 'prompt' => $prompt, 'negative_prompt' => '(deformed, distorted, disfigured:1.3), poorly drawn, bad anatomy', 'steps' => 20, 'sampler_name' => 'DPM++ 2M SDE', 'cfg_scale' => 7, 'seed' => -1, 'width' => 1024, 'height' => 1303, 'override_settings' => [ 'sd_model_checkpoint' => 'realisticVisionV51_v51VAE-inpainting', 'sd_vae' => 'vae-ft-mse-840000-ema-pruned', 'CLIP_stop_at_last_layers' => 2 ], 'clip_skip' => 2, 'alwayson_scripts' => [ 'controlnet' => [ 'args' => [[ 'enabled' => true, 'input_image' => $base64Img, 'module' => 'inpaint_only+lama', 'model' => 'control_v11p_sd15_inpaint_fp16 [be8bc0ed]', 'weight' => 1, 'resize_mode' => 'Resize and Fill', 'pixel_perfect' => false, 'control_mode' => 'ControlNet is more important', 'starting_control_step' => 0, 'ending_control_step' => 1 ]] ] ] ]; $apiUrl = "http://20.0.17.188:45001/sdapi/v1/txt2img"; $headers = ['Content-Type: application/json']; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $apiUrl); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($params, JSON_UNESCAPED_UNICODE)); curl_setopt($ch, CURLOPT_TIMEOUT, 180); $response = curl_exec($ch); $error = curl_error($ch); curl_close($ch); if ($error) { return json(['code' => 1, 'msg' => '请求失败:' . $error]); } $data = json_decode($response, true); if (!isset($data['images'][0])) { return json(['code' => 1, 'msg' => '接口未返回图像数据']); } $resultImg = base64_decode($data['images'][0]); $saveDir = ROOT_PATH . 'public/uploads/img2img/'; if (!is_dir($saveDir)) { mkdir($saveDir, 0755, true); } $originalBaseName = pathinfo($imgRelPath, PATHINFO_FILENAME); $fileName = $originalBaseName . '-' . time() . '-1024x1248.png'; $savePath = $saveDir . $fileName; file_put_contents($savePath, $resultImg); return json([ 'code' => 0, 'msg' => '图像生成成功', 'data' => [ 'origin_url' => '/uploads/img2img/' . $fileName ] ]); } /** * 后期图像处理-单张图片高清放大处理 */ public function extra_image() { // 配置参数 $config = [ 'input_dir' => 'uploads/img2img/', 'output_dir' => 'uploads/extra_image/', 'api_url' => 'http://20.0.17.188:45001/sdapi/v1/extra-single-image', 'timeout' => 120, // 增加超时时间,高清处理可能耗时较长 'upscale_params' => [ 'resize_mode' => 0, 'show_extras_results' => true, 'gfpgan_visibility' => 0, // 人脸修复关闭 'codeformer_visibility' => 0, // 人脸修复关闭 'codeformer_weight' => 0, 'upscaling_resize' => 2.45, // 放大倍数 'upscaling_crop' => true, 'upscaler_1' => 'R-ESRGAN 4x+ Anime6B', // 主放大模型 'upscaler_2' => 'None', // 不使用第二放大器 'extras_upscaler_2_visibility' => 0, 'upscale_first' => false, ] ]; // 输入文件处理 $imgRelPath = '0835006071623-1757406184-1024x1248.png'; $imgPath = ROOT_PATH . 'public/' . $config['input_dir'] . $imgRelPath; if (!file_exists($imgPath)) { return json(['code' => 1, 'msg' => '原图不存在:' . $imgRelPath]); } // 读取并编码图片 try { $imgData = file_get_contents($imgPath); if ($imgData === false) { throw new Exception('无法读取图片文件'); } $base64Img = base64_encode($imgData); } catch (Exception $e) { return json(['code' => 1, 'msg' => '图片处理失败:' . $e->getMessage()]); } // 准备API请求数据 $postData = array_merge($config['upscale_params'], ['image' => $base64Img]); $jsonData = json_encode($postData); if ($jsonData === false) { return json(['code' => 1, 'msg' => 'JSON编码失败']); } // 调用API进行高清放大 $ch = curl_init(); curl_setopt_array($ch, [ CURLOPT_URL => $config['api_url'], CURLOPT_RETURNTRANSFER => true, CURLOPT_POST => true, CURLOPT_HTTPHEADER => ['Content-Type: application/json'], CURLOPT_POSTFIELDS => $jsonData, CURLOPT_TIMEOUT => $config['timeout'], CURLOPT_CONNECTTIMEOUT => 30, ]); $response = curl_exec($ch); $error = curl_error($ch); $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE); curl_close($ch); if ($error) { return json(['code' => 1, 'msg' => 'API请求失败:' . $error]); } if ($httpCode !== 200) { return json(['code' => 1, 'msg' => 'API返回错误状态码:' . $httpCode]); } $data = json_decode($response, true); if (json_last_error() !== JSON_ERROR_NONE) { return json(['code' => 1, 'msg' => 'API返回数据解析失败']); } if (!isset($data['image']) || empty($data['image'])) { return json(['code' => 1, 'msg' => '接口未返回有效的图像数据']); } // 保存处理后的图片 try { $resultImg = base64_decode($data['image']); if ($resultImg === false) { throw new Exception('Base64解码失败'); } $saveDir = ROOT_PATH . 'public/' . $config['output_dir']; if (!is_dir($saveDir) && !mkdir($saveDir, 0755, true)) { throw new Exception('无法创建输出目录'); } $originalBaseName = pathinfo($imgRelPath, PATHINFO_FILENAME); $fileName = $originalBaseName . '-hd.png'; // 使用-hd后缀更明确 $savePath = $saveDir . $fileName; if (file_put_contents($savePath, $resultImg) === false) { throw new Exception('无法保存处理后的图片'); } // 返回成功响应 return json([ 'code' => 0, 'msg' => '图像高清放大处理成功', 'data' => [ 'url' => '/' . $config['output_dir'] . $fileName, 'original_size' => filesize($imgPath), 'processed_size' => filesize($savePath), 'resolution' => getimagesize($savePath), // 返回新图片的分辨率 ] ]); } catch (Exception $e) { return json(['code' => 1, 'msg' => '保存结果失败:' . $e->getMessage()]); } } /** * 文本生成图片并保存第一张结果 * @param array $params 请求参数 * @return array 返回结果 */ public function txttowimg() { // API配置 $config = [ 'api_url' => 'https://chatapi.onechats.ai/mj/submit/imagine', 'fetch_url' => 'https://chatapi.onechats.ai/mj/task/', 'api_key' => 'sk-iURfrAgzAjhZ4PpPLwzmWIAhM7zKfrkwDvyxk4RVBQ4ouJNK', 'default_prompt' => '一个猫', 'wait_time' => 3 // 等待生成完成的秒数 ]; try { // 1. 准备请求数据 $prompt = $config['default_prompt']; $postData = [ 'botType' => 'MID_JOURNEY', 'prompt' => $prompt, 'base64Array' => [], 'accountFilter' => [ 'channelId' => "", 'instanceId' => "", 'modes' => [], 'remark' => "", 'remix' => true, 'remixAutoConsidered' => true ], 'notifyHook' => "", 'state' => "" ]; // 2. 提交生成请求 $generateResponse = $this->sendApiRequest($config['api_url'], $postData, $config['api_key']); $generateData = json_decode($generateResponse, true); if (empty($generateData['result'])) { throw new Exception('生成失败: '.($generateData['message'] ?? '未知错误')); } $taskId = $generateData['result']; // 3. 等待图片生成完成 sleep($config['wait_time']); // 4. 获取生成结果 $fetchUrl = $config['fetch_url'].$taskId.'/fetch'; $fetchResponse = $this->sendApiRequest($fetchUrl, [], $config['api_key'], 'GET'); $fetchData = json_decode($fetchResponse, true); if (empty($fetchData['imageUrl'])) { throw new Exception('获取图片失败: '.($fetchData['message'] ?? '未知错误')); } // 5. 处理返回的图片数组(取第一张) $imageUrls = is_array($fetchData['imageUrl']) ? $fetchData['imageUrl'] : [$fetchData['imageUrl']]; $firstImageUrl = $imageUrls[0]; // 6. 保存图片到本地 $savePath = $this->saveImage($firstImageUrl); // 7. 返回结果 return [ 'code' => 200, 'msg' => '图片生成并保存成功', 'data' => [ 'local_path' => $savePath, 'web_url' => request()->domain().$savePath, 'task_id' => $taskId ] ]; } catch (Exception $e) { // 错误处理 return [ 'code' => 500, 'msg' => '处理失败: '.$e->getMessage(), 'data' => null ]; } } /** * 发送API请求 * @param string $url 请求地址 * @param array $data 请求数据 * @param string $apiKey API密钥 * @param string $method 请求方法 * @return string 响应内容 * @throws Exception */ private function sendApiRequest($url, $data, $apiKey, $method = 'POST') { $ch = curl_init(); curl_setopt_array($ch, [ CURLOPT_URL => $url, CURLOPT_RETURNTRANSFER => true, CURLOPT_CUSTOMREQUEST => $method, CURLOPT_HTTPHEADER => [ 'Authorization: Bearer '.$apiKey, 'Accept: application/json', 'Content-Type: application/json' ], CURLOPT_POSTFIELDS => $method === 'POST' ? json_encode($data) : null, CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false, CURLOPT_TIMEOUT => 60, CURLOPT_FAILONERROR => true ]); $response = curl_exec($ch); $error = curl_error($ch); $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE); curl_close($ch); if ($error) { throw new Exception('API请求失败: '.$error); } if ($httpCode < 200 || $httpCode >= 300) { throw new Exception('API返回错误状态码: '.$httpCode); } return $response; } /** * 保存图片到本地 * @param string $imageUrl 图片URL * @return string 本地保存路径 * @throws Exception */ private function saveImage($imageUrl) { // 1. 创建存储目录 $saveDir = ROOT_PATH.'public'.DS.'uploads'.DS.'midjourney'.DS.date('Ymd'); if (!is_dir($saveDir)) { mkdir($saveDir, 0755, true); } // 2. 生成唯一文件名 $filename = uniqid().'.png'; $localPath = DS.'uploads'.DS.'midjourney'.DS.date('Ymd').DS.$filename; $fullPath = $saveDir.DS.$filename; // 3. 下载图片 $ch = curl_init($imageUrl); curl_setopt_array($ch, [ CURLOPT_RETURNTRANSFER => true, CURLOPT_FOLLOWLOCATION => true, CURLOPT_SSL_VERIFYPEER => false, CURLOPT_CONNECTTIMEOUT => 15 ]); $imageData = curl_exec($ch); $error = curl_error($ch); curl_close($ch); if (!$imageData) { throw new Exception('图片下载失败: '.$error); } // 4. 验证图片类型 $imageInfo = getimagesizefromstring($imageData); if (!in_array($imageInfo['mime'] ?? '', ['image/png', 'image/jpeg'])) { throw new Exception('下载内容不是有效图片'); } // 5. 保存文件 if (!file_put_contents($fullPath, $imageData)) { throw new Exception('图片保存失败'); } return $localPath; } /** * 将图片背景变为透明 * @param string $imagePath 图片路径 * @return string 处理后的图片路径 */ public function makeImageBackgroundTransparent($imagePath) { // 检查图片是否存在 if (!file_exists($imagePath)) { return '图片不存在'; } // 获取图片信息 $imageInfo = getimagesize($imagePath); if (!$imageInfo) { return '无法获取图片信息'; } $width = $imageInfo[0]; $height = $imageInfo[1]; // 根据图片类型创建图像资源 switch ($imageInfo[2]) { case IMAGETYPE_JPEG: $source = imagecreatefromjpeg($imagePath); break; case IMAGETYPE_PNG: $source = imagecreatefrompng($imagePath); break; case IMAGETYPE_GIF: $source = imagecreatefromgif($imagePath); break; default: return '不支持的图片类型'; } if (!$source) { return '无法创建图像资源'; } // 创建透明画布 $transparent = imagecreatetruecolor($width, $height); if (!$transparent) { imagedestroy($source); return '无法创建透明画布'; } imagealphablending($transparent, false); imagesavealpha($transparent, true); $transparentColor = imagecolorallocatealpha($transparent, 255, 255, 255, 127); imagefilledrectangle($transparent, 0, 0, $width, $height, $transparentColor); // 背景色阈值(根据实际图片调整) $bgThreshold = 150; // 降低阈值,提高背景检测灵敏度 $colorThreshold = 60; // 颜色差值阈值 $saturationThreshold = 20; // 饱和度阈值 // 逐像素处理 for ($x = 0; $x < $width; $x++) { for ($y = 0; $y < $height; $y++) { $pixelColor = imagecolorat($source, $x, $y); $r = ($pixelColor >> 16) & 0xFF; $g = ($pixelColor >> 8) & 0xFF; $b = $pixelColor & 0xFF; // 计算亮度 $brightness = ($r + $g + $b) / 3; // 计算颜色饱和度 $max = max($r, $g, $b); $min = min($r, $g, $b); $saturation = ($max > 0) ? (($max - $min) / $max) * 100 : 0; // 计算与背景色的差值(黑色/白色背景) $bgDiff1 = sqrt(pow($r, 2) + pow($g, 2) + pow($b, 2)); // 与黑色的差值 $bgDiff2 = sqrt(pow(255 - $r, 2) + pow(255 - $g, 2) + pow(255 - $b, 2)); // 与白色的差值 $minBgDiff = min($bgDiff1, $bgDiff2); // 综合判断:亮度较高(纸巾)或颜色与背景差异大的像素保留 if ($brightness > $bgThreshold || $minBgDiff > $colorThreshold || $saturation > $saturationThreshold) { // 保留前景像素 imagesetpixel($transparent, $x, $y, $pixelColor); } } } // 生成输出路径 $saveDir = ROOT_PATH . 'public/uploads/ceshi/'; if (!is_dir($saveDir)) { if (!mkdir($saveDir, 0755, true)) { imagedestroy($source); imagedestroy($transparent); return '无法创建保存目录'; } } // 生成唯一文件名 $pathInfo = pathinfo($imagePath); $filename = $pathInfo['filename'] . '_transparent_' . date('YmdHis') . '.png'; $outputPath = $saveDir . $filename; // 保存透明图片 if (!imagepng($transparent, $outputPath)) { imagedestroy($source); imagedestroy($transparent); return '无法保存透明图片'; } // 释放资源 imagedestroy($source); imagedestroy($transparent); return $outputPath; } /** * 处理图片背景透明化请求 */ public function imgimg() { // 使用本地图片路径 $localPath = ROOT_PATH . 'public/uploads/zhi.jpg'; // 检查图片是否存在 if (!file_exists($localPath)) { return json(['code' => 1, 'msg' => '本地图片不存在,请检查文件路径']); } // 处理图片背景透明化 $result = $this->makeImageBackgroundTransparent($localPath); // 返回结果 if (file_exists($result)) { // 生成可访问的URL $relativePath = str_replace(ROOT_PATH . 'public', '', $result); // 确保路径以正斜杠开头 if (substr($relativePath, 0, 1) !== '/') { $relativePath = '/' . $relativePath; } $imageUrl = 'http://20.0.16.128:9093' . $relativePath; $res = [ 'code' => 0, 'msg' => '处理成功', 'data' => [ 'transparent_image' => $imageUrl ] ]; } else { $res = [ 'code' => 1, 'msg' => $result ]; } return json($res); } }