添加对微信小程序环境的支持

fix
2026-04-30 19:43:13 +08:00 · 2026-04-30 19:35:24 +08:00
9 changed files with 129 additions and 18 deletions
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # scan-code-jssdk

-统一扫码 JSSDK，支持桥接扫码、微信 JSSDK 扫码、Web 摄像头扫码、选择图片识别和扫码枪输入。
+统一扫码 JSSDK，支持桥接扫码、微信小程序、微信 JSSDK 扫码、Web 摄像头扫码、选择图片识别和扫码枪输入。

 ## 功能

--- a/demo.html
+++ b/demo.html
@@ -181,7 +181,7 @@
  <main class="page">
    <section class="hero">
      <h1>IScan 通用扫码 SDK</h1>
-      <p>统一接入桥接扫码、微信 JSSDK 扫码、Web 摄像头扫码、图片识别和扫码枪输入。</p>
+      <p>统一接入桥接扫码、微信小程序、微信 JSSDK 扫码、Web 摄像头扫码、图片识别和扫码枪输入。</p>
    </section>

    <section class="grid">
--- a/dist/index.html
+++ b/dist/index.html
@@ -161,7 +161,7 @@

    section {
      margin-bottom: 16px;
-    }</style></head><body><main class="page"><section class="hero"><h1>IScan 通用扫码 SDK</h1><p>统一接入桥接扫码、微信 JSSDK 扫码、Web 摄像头扫码、图片识别和扫码枪输入。</p></section><section class="grid"><div class="card"><h2>功能说明</h2><ul class="feature-list"><li>支持桥接扫码、微信 JSSDK 扫码、Web 摄像头扫码、图片识别和扫码枪输入。</li><li>浏览器环境使用WASM库识别二维码和条形码。</li><li>扫码结果由监听规则统一回调，支持正则匹配和优先级排序。</li></ul></div><div class="card"><h2>当前状态</h2><p>SDK 状态：<span id="status" class="status">loading</span></p><p>运行环境：</p><pre id="output" class="panel"></pre></div></section><section class="card"><h2>操作</h2><p>点击开始后，会按桥接、微信、Web 摄像头、图片识别的顺序选择可用扫码方式。</p><div class="actions"><button onclick="startScan()" class="btn">开始扫码</button> <button onclick="scanVideo()" class="btn secondary">开启视频扫码</button> <button onclick="scanImage()" class="btn secondary">选择图片识别</button> <button onclick="stopScan()" class="btn secondary">停止扫码</button></div></section><section class="card"><h2>扫码结果</h2><pre id="result" class="panel result"></pre></section><section class="card"><h2>错误信息</h2><pre id="error" class="panel error"></pre><p style="color: #919191">错误信息可能来源于扫码结果、扫码过程、扫码初始化等。</p></section><section class="card code"><h2>接入方式</h2><pre>IScan.config({
+    }</style></head><body><main class="page"><section class="hero"><h1>IScan 通用扫码 SDK</h1><p>统一接入桥接扫码、微信小程序、微信 JSSDK 扫码、Web 摄像头扫码、图片识别和扫码枪输入。</p></section><section class="grid"><div class="card"><h2>功能说明</h2><ul class="feature-list"><li>支持桥接扫码、微信 JSSDK 扫码、Web 摄像头扫码、图片识别和扫码枪输入。</li><li>浏览器环境使用WASM库识别二维码和条形码。</li><li>扫码结果由监听规则统一回调，支持正则匹配和优先级排序。</li></ul></div><div class="card"><h2>当前状态</h2><p>SDK 状态：<span id="status" class="status">loading</span></p><p>运行环境：</p><pre id="output" class="panel"></pre></div></section><section class="card"><h2>操作</h2><p>点击开始后，会按桥接、微信、Web 摄像头、图片识别的顺序选择可用扫码方式。</p><div class="actions"><button onclick="startScan()" class="btn">开始扫码</button> <button onclick="scanVideo()" class="btn secondary">开启视频扫码</button> <button onclick="scanImage()" class="btn secondary">选择图片识别</button> <button onclick="stopScan()" class="btn secondary">停止扫码</button></div></section><section class="card"><h2>扫码结果</h2><pre id="result" class="panel result"></pre></section><section class="card"><h2>错误信息</h2><pre id="error" class="panel error"></pre><p style="color: #919191">错误信息可能来源于扫码结果、扫码过程、扫码初始化等。</p></section><section class="card code"><h2>接入方式</h2><pre>IScan.config({
  webScanEnabled: true,
  webScanCanvasEnabled: true,
  webScanBeepEnabled: true,
--- a/dist/index.js
+++ b/dist/index.js
--- a/src/index.js
+++ b/src/index.js
@@ -7,9 +7,12 @@ const IScan = exportSDK(core, null, "config", "setStatusListener", "onScanListen

 function dispatchIScanReady() {
  _global.__IScanReady__ && _global.__IScanReady__();
+  if (!_global.dispatchEvent) {
+    return;
+  }
  if (typeof Event === "function") {
    _global.dispatchEvent(new Event("IScanReady"));
-  } else {
+  } else if (typeof document !== "undefined") {
    let event = document.createEvent("Event");
    event.initEvent("IScanReady", true, true);
    _global.dispatchEvent(event);
--- a/src/services/bridge/index.js
+++ b/src/services/bridge/index.js
@@ -7,13 +7,23 @@ let _events = {};
 let _callbacks = {};
 let _bridge = "__bridge_client__";

+function getWindow() {
+  if (typeof window === "undefined") {
+    return null;
+  }
+  return window;
+}
+
 function getBridgeName() {
  return getConfig("bridgeName") ? getConfig("bridgeName") : _bridge;
 }

 function _callRuntime(func, ...options) {
  let funcs = func.split('.');
-  let instant = window;
+  let instant = getWindow();
+  if (!instant) {
+    return;
+  }
  while (funcs.length > 1) {
    instant = instant[funcs.shift()];
  }
@@ -31,9 +41,13 @@ function onCallback(name, callback) {
 }

 function _checkInit() {
+  const win = getWindow();
+  if (!win) {
+    return;
+  }
  let methodName = `${getBridgeName()}_handle_callback`;
-  if (!window[methodName]) {
-    window[methodName] = (res) => {
+  if (!win[methodName]) {
+    win[methodName] = (res) => {
      let { method, payload, code, request_id } = toAny(res, {});
      let data = toAny(payload, {});
      if (request_id) {
@@ -48,7 +62,9 @@ function _checkInit() {
 }

 export function inRuntime() {
-  return !!window[getBridgeName()]
+  const win = getWindow();
+  return !!win
+    && !!win[getBridgeName()]
    && getConfig("bridgeEnabled") !== false;
 }

--- a/src/services/scanner/index.js
+++ b/src/services/scanner/index.js
@@ -6,6 +6,13 @@ let _scannerLastInputTime = 0;

 const SCANNER_INPUT_INTERVAL = 100;

+function getWindow() {
+    if (typeof window === "undefined") {
+        return null;
+    }
+    return window;
+}
+
 function clearScannerValue() {
    _scannerValue = "";
    _scannerLastInputTime = 0;
@@ -69,13 +76,17 @@ export function startScanner(callback){
    if (!callback || typeof callback !== "function") {
        return;
    }
+    const win = getWindow();
+    if (!win) {
+        return;
+    }
    _scannerCallback = callback;
    if (_scannerStatus === "scanning") {
        return;
    }
    _scannerStatus = "scanning";
    clearScannerValue();
-    window.addEventListener("keydown", onScannerKeydown);
+    win.addEventListener("keydown", onScannerKeydown);
 }

 export function stopScanner(){
@@ -85,5 +96,6 @@ export function stopScanner(){
    _scannerStatus = "ready";
    _scannerCallback = null;
    clearScannerValue();
-    window.removeEventListener("keydown", onScannerKeydown);
-}
+    const win = getWindow();
+    win && win.removeEventListener("keydown", onScannerKeydown);
+}
--- a/src/services/web/index.js
+++ b/src/services/web/index.js
@@ -383,8 +383,13 @@ function detectImageFile(detector, file) {
 }

 export function startScanForImage() {
-  return createBarcodeDetector(getConfig("webScanType")).then(detector => {
-    return chooseImageFile().then(file => detectImageFile(detector, file));
+  return chooseImageFile().then(file => {
+    if (!file) {
+      return null;
+    }
+    return createBarcodeDetector(getConfig("webScanType")).then(detector => {
+      return detectImageFile(detector, file);
+    });
  }).then(code => {
    if (code && code.rawValue) {
      return {
--- a/src/services/wx/index.js
+++ b/src/services/wx/index.js
@@ -9,10 +9,13 @@ let _wxReadyPromise = null;
 let _wxReady = false;

 function getWx() {
-    if (typeof window === "undefined") {
-        return null;
+    if (typeof wx !== "undefined") {
+        return wx;
    }
-    return window.wx;
+    if (typeof window !== "undefined") {
+        return window.wx;
+    }
+    return null;
 }

 function loadWxScript() {
@@ -78,9 +81,15 @@ export function isWxEnv() {
        && /micromessenger/i.test(navigator.userAgent || "");
 }

+export function isWxMiniProgramEnv() {
+    const wx = getWx();
+    return !!(wx && wx.scanCode);
+}
+
 export function isSupportWxScan() {
    const wx = getWx();
-    return isWxEnv()
+    return isWxMiniProgramEnv()
+        || isWxEnv()
        && _wxReady
        && wx
        && wx.scanQRCode;
@@ -128,7 +137,73 @@ export function initWxJssdk() {
    return _wxReadyPromise;
 }

+function getWxScanErrorMessage(err) {
+    if (!err) {
+        return "扫码失败";
+    }
+    let errorMsg = err.errMsg || "扫码失败";
+    if (typeof err === "object") {
+        const errorDetails = [];
+        if (err.errCode) {
+            errorDetails.push("错误代码: " + err.errCode);
+        }
+        if (err.errDesc) {
+            errorDetails.push("错误描述: " + err.errDesc);
+        }
+        try {
+            const errorStr = JSON.stringify(err, null, 2);
+            if (errorStr && errorStr !== "{}" && errorStr !== "{\"errMsg\":\"" + errorMsg + "\"}") {
+                errorDetails.push(errorStr);
+            } else {
+                errorDetails.push(errorMsg);
+            }
+        } catch (e) {
+        }
+        if (errorDetails.length) {
+            errorMsg = errorDetails.join("\n");
+        }
+    }
+    return errorMsg;
+}
+
+function startScanForWxMiniProgram(options) {
+    return new Promise(resolve => {
+        const wx = getWx();
+        if (!wx || !wx.scanCode) {
+            resolve({
+                success: false,
+                error: "微信小程序API不可用"
+            });
+            return;
+        }
+        const {
+            scanType = ["qrCode", "barCode"],
+            onlyFromCamera = false
+        } = options || {};
+        wx.scanCode({
+            onlyFromCamera,
+            scanType,
+            success: res => {
+                resolve({
+                    success: true,
+                    result: res.result,
+                    code: res.result
+                });
+            },
+            fail: err => {
+                resolve({
+                    success: false,
+                    error: getWxScanErrorMessage(err)
+                });
+            }
+        });
+    });
+}
+
 export function startScanForWx(options) {
+    if (isWxMiniProgramEnv()) {
+        return startScanForWxMiniProgram(options);
+    }
    return initWxJssdk().then(() => {
        return new Promise((resolve, reject) => {
            const {
Author	SHA1	Message	Date
iqudoo	23c91267a2	添加对微信小程序环境的支持	2026-04-30 19:43:13 +08:00
iqudoo	3856b6e8c9	fix	2026-04-30 19:35:24 +08:00