读取本地pdf

electron/main.js

@@ -134,8 +134,9 @@ ipcMain.handle("print-pdf", async (event, pdfDataOrUrl) => {
   let tempFilePath = null;
   
   try {
-    // 如果是 base64 data URI，转换为临时文件
     let pdfPath = pdfDataOrUrl;
+    
+    // 如果是 base64 data URI，转换为临时文件
     if (pdfDataOrUrl.startsWith("data:application/pdf;base64,")) {
       const base64Data = pdfDataOrUrl.replace("data:application/pdf;base64,", "");
       const buffer = Buffer.from(base64Data, "base64");
@@ -145,6 +146,24 @@ ipcMain.handle("print-pdf", async (event, pdfDataOrUrl) => {
       fs.writeFileSync(tempFilePath, buffer);
       pdfPath = `file://${tempFilePath}`;
       log.info("PDF written to temp file:", tempFilePath);
+    } 
+    // 如果是相对路径（Vite 打包后的资源），转换为绝对路径
+    else if (pdfDataOrUrl.startsWith("/assets/")) {
+      const isDev = !app.isPackaged;
+      if (!isDev) {
+        // 生产环境：从 dist 目录加载
+        const absolutePath = path.join(__dirname, "..", "dist", pdfDataOrUrl);
+        pdfPath = `file://${absolutePath}`;
+        log.info("Using bundled PDF:", absolutePath);
+      } else {
+        // 开发环境：Vite 会处理，保持原样
+        pdfPath = `http://localhost:5173${pdfDataOrUrl}`;
+        log.info("Using dev server PDF:", pdfPath);
+      }
+    }
+    // 如果已经是 file:// 或 http(s):// 协议，保持原样
+    else if (!pdfDataOrUrl.startsWith("file://") && !pdfDataOrUrl.startsWith("http")) {
+      pdfPath = `file://${pdfDataOrUrl}`;
     }
 
     // 创建一个隐藏的窗口用于加载PDF