以前，我使用http://do.convertapi.com/Web2Pdf使用Java使用简单的GET请求(不是POST(将HTML字符串转换为PDF。整个内容是使用curl参数传递的。
但是，该 API 最近似乎已停止工作。我正在尝试移植到https://v2.convertapi.com/web/to/pdf但我找不到一个示例来使用 GET 或 POST 的新 API 做同样的事情。
有人可以提供一个例子来使用 Java 发出 GET 或 POST 请求吗？
更新：我已经设法让它工作。
private static final String WEB2PDF_API_URL = "https://v2.convertapi.com/html/to/pdf";
private static final String WEB2PDF_SECRET = "secret-here";
String htmlContent = "valid HTML content here";
URL apiUrl = new URL(WEB2PDF_API_URL + "?secret=" + WEB2PDF_SECRET + "&download= attachment&PageOrientation=landscape&MarginLeft=0&MarginRight=0&MarginTop=0&MarginBottom=0");
HttpURLConnection connection = null;
ByteArrayOutputStream buffer = null;
connection = (HttpURLConnection) apiUrl.openConnection();
connection.setRequestProperty("Content-Disposition", "attachment; filename="data.html"");
connection.setRequestProperty("Content-Type", "application/octet-stream");
connection.setRequestMethod("POST");
connection.setConnectTimeout(60000);
connection.setReadTimeout(60000);
connection.setDoOutput(true);
/* write request */
OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
writer.write(htmlContent);
writer.flush();
writer.close();
/* read response */
String responseMessage = connection.getResponseMessage();
logger.info("responseMessage: " + responseMessage);
int statusCode = connection.getResponseCode();
logger.info("statusCode: " + statusCode);
if (statusCode == HttpURLConnection.HTTP_OK) {
logger.info("HTTP status code OK");
// parse output
InputStream is = connection.getInputStream();
buffer = new ByteArrayOutputStream();
int nRead;
byte[] data = new byte[16384];
while ((nRead = is.read(data, 0, data.length)) != -1) {
buffer.write(data, 0, nRead);
}
buffer.flush();
byte[] attachmentData = buffer.toByteArray();
Multipart content = new MimeMultipart();
...
MimeBodyPart attachment = new MimeBodyPart();
InputStream attachmentDataStream = new ByteArrayInputStream(attachmentData);
attachment.setFileName("filename-" + Long.toHexString(Double.doubleToLongBits(Math.random())) + ".pdf");
attachment.setContent(attachmentDataStream, "application/pdf");
content.addBodyPart(attachment);
...
}
您可以轻松地将HTML字符串推送为文件。我没有 JAVA 示例，但 C# 演示将为您提供正确的路径。
using System;
using System.IO;
using System.Net.Http;
using System.Text;
class MainClass {
public static void Main (string[] args) {
var url = new Uri("https://v2.convertapi.com/html/to/pdf?download=attachment&secret=<YourSecret>");
var htmlString = "<!doctype html><html lang=en><head><meta charset=utf-8><title>ConvertAPI test</title></head><body>This page is generated from HTML string.</body></html>";
var content = new StringContent(htmlString, Encoding.UTF8, "application/octet-stream");
content.Headers.Add("Content-Disposition", "attachment; filename="data.html"");
using (var resultFile = File.OpenWrite(@"C:Pathtoresultfile.pdf"))
{
new HttpClient().PostAsync(url, content).Result.Content.CopyToAsync(resultFile).Wait();
}
}
}