AI模块联调

utils/streamRequest.js

@@ -51,12 +51,101 @@ function StreamRequestMiniProgram(url, data = {}, onDataReceived, onError, onCom
             }
         });
         
-        // 监听分块数据
-        requestTask.onChunkReceived((res) => {
-            try {
-                const decoder = new TextDecoder('utf-8');
-                const chunk = decoder.decode(new Uint8Array(res.data));
-                console.log('📦 收到分块数据:', chunk);
+        // UTF-8解码函数，用于微信小程序真机环境
+        function utf8Decode(uint8Array) {
+            let result = '';
+            let i = 0;
+            const len = uint8Array.length;
+            
+            while (i < len) {
+                const byte1 = uint8Array[i];
+                
+                // 1字节字符 (0xxxxxxx)
+                if (byte1 < 0x80) {
+                    result += String.fromCharCode(byte1);
+                    i++;
+                }
+                // 2字节字符 (110xxxxx 10xxxxxx)
+                else if (byte1 >= 0xC0 && byte1 < 0xE0) {
+                    if (i + 1 < len) {
+                        const byte2 = uint8Array[i + 1];
+                        if (byte2 >= 0x80 && byte2 < 0xC0) {
+                            const codePoint = ((byte1 & 0x1F) << 6) | (byte2 & 0x3F);
+                            result += String.fromCharCode(codePoint);
+                            i += 2;
+                            continue;
+                        }
+                    }
+                    // 无效的UTF-8序列，跳过
+                    result += '<27>';
+                    i++;
+                }
+                // 3字节字符 (1110xxxx 10xxxxxx 10xxxxxx)
+                else if (byte1 >= 0xE0 && byte1 < 0xF0) {
+                    if (i + 2 < len) {
+                        const byte2 = uint8Array[i + 1];
+                        const byte3 = uint8Array[i + 2];
+                        if ((byte2 >= 0x80 && byte2 < 0xC0) && (byte3 >= 0x80 && byte3 < 0xC0)) {
+                            const codePoint = ((byte1 & 0x0F) << 12) | ((byte2 & 0x3F) << 6) | (byte3 & 0x3F);
+                            result += String.fromCharCode(codePoint);
+                            i += 3;
+                            continue;
+                        }
+                    }
+                    // 无效的UTF-8序列，跳过
+                    result += '<27>';
+                    i++;
+                }
+                // 4字节字符 (11110xxx 10xxxxxx 10xxxxxx 10xxxxxx)
+                else if (byte1 >= 0xF0 && byte1 < 0xF8) {
+                    if (i + 3 < len) {
+                        const byte2 = uint8Array[i + 1];
+                        const byte3 = uint8Array[i + 2];
+                        const byte4 = uint8Array[i + 3];
+                        if ((byte2 >= 0x80 && byte2 < 0xC0) && (byte3 >= 0x80 && byte3 < 0xC0) && (byte4 >= 0x80 && byte4 < 0xC0)) {
+                            let codePoint = ((byte1 & 0x07) << 18) | ((byte2 & 0x3F) << 12) | ((byte3 & 0x3F) << 6) | (byte4 & 0x3F);
+                            // 处理UTF-16代理对
+                            if (codePoint >= 0x10000) {
+                                codePoint -= 0x10000;
+                                const highSurrogate = (codePoint >> 10) + 0xD800;
+                                const lowSurrogate = (codePoint & 0x3FF) + 0xDC00;
+                                result += String.fromCharCode(highSurrogate, lowSurrogate);
+                            } else {
+                                result += String.fromCharCode(codePoint);
+                            }
+                            i += 4;
+                            continue;
+                        }
+                    }
+                    // 无效的UTF-8序列，跳过
+                    result += '<27>';
+                    i++;
+                }
+                // 无效的UTF-8序列，跳过
+                else {
+                    result += '<27>';
+                    i++;
+                }
+            }
+            
+            return result;
+        }
+        
+        // 监听分块数据
+        requestTask.onChunkReceived((res) => {
+            try {
+                // 微信小程序兼容处理：微信小程序不支持TextDecoder，使用自定义UTF-8解码
+                let chunk = '';
+                if (typeof TextDecoder !== 'undefined') {
+                    // 支持TextDecoder的环境（如开发者工具）
+                    const decoder = new TextDecoder('utf-8');
+                    chunk = decoder.decode(new Uint8Array(res.data));
+                } else {
+                    // 微信小程序真机环境，使用自定义UTF-8解码函数
+                    const uint8Array = new Uint8Array(res.data);
+                    chunk = utf8Decode(uint8Array);
+                }
+                console.log('📦 收到分块数据:', chunk);
                 buffer += chunk;
                 
                 let lines = buffer.split("\n");