添加html直接转pdf函数；图片限制最大宽度；文字添加最小限制，避免文字太小看不清

2022-08-17 00:32:51 +08:00 · 2022-08-17 00:32:51 +08:00 · d069b3c551
commit d069b3c551
parent 64b0311595
1 changed files with 34 additions and 3 deletions
--- a/main.js
+++ b/main.js
@ -48,6 +48,7 @@ async function main() {
            console.log(res);
        }
    }
+    console.log("完成");
 }

 async function getDetail(uuid) {
@ -73,13 +74,21 @@ async function getDetail(uuid) {

 // https://wkhtmltopdf.org/
 async function transferToPDF(htmlFilePath, pdfFilePath) {
+    console.log(`开始转换 ${pdfFilePath}`);
    let html = `
    <html>
        <head>
            <meta charset="utf-8">
            <style>
                * {
-                    font-size: large;
+                    /*
+                    font-size: 30px;
+                    font-size: large !important;
+                    */
+                }
+
+                img {
+                    max-width: 100%;
                }
            </style>
        </head>
@ -87,8 +96,30 @@ async function transferToPDF(htmlFilePath, pdfFilePath) {
            ${fs.readFileSync(htmlFilePath)}
        </body>
    </html>`
-    wkhtmltopdf(html, { pageSize: "A4" })
+    // fs.writeFileSync(`./output/test.html`, html);
+    wkhtmltopdf(html, { pageSize: "A4", minimumFontSize: 10, disableSmartShrinking: true })
        .pipe(fs.createWriteStream(pdfFilePath));
 }

-main();
+// ========================================================
+
+// 遍历 output/html 文件夹下的所有html文件
+async function transferHTMLToPDF() {
+    let files = fs.readdirSync("./output/html");
+    for (let i = 0; i < files.length; i++) {
+        const fileName = files[i];
+        if (!fileName.endsWith(".html")) continue; // 过滤掉 html 文件
+        let pdfFileName = fileName.replace(".html", ".pdf");
+        await transferToPDF(`./output/html/${fileName}`, `./output/pdf/${pdfFileName}`);
+    }
+    console.log("完成");
+}
+
+// 爬取 + 转换为pdf
+// main();
+
+// 已经爬取过，只需要转pdf
+transferHTMLToPDF();
+
+// 测试调试用
+// transferToPDF(`./output/html/8.3 操作系统(三).html`, `./output/test.pdf`)