PDF.co Web API - HTML To PDF API - Java - Generate PDF Invoice From HTML Template - ByteScout

PDF.co Web API – HTML To PDF API – Java – Generate PDF Invoice From HTML Template

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PDF.co Web API – HTML To PDF API – Java – Generate PDF Invoice From HTML Template

Main.java

[java]
package com.company;

import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.JsonPrimitive;
import okhttp3.*;

import java.io.*;
import java.net.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class Main
{
// The authentication key (API Key).
// Get your own by registering at https://app.pdf.co/documentation/api
final static String API_KEY = “***********************************”;

public static void main(String[] args) throws IOException
{
// HTML template
final String template = new String(Files.readAllBytes(Paths.get(“.\\invoice_template.html”)));
// Data to fill the template
final String templateData = new String(Files.readAllBytes(Paths.get(“.\\invoice_data.json”)));
// Destination PDF file name
final Path destinationFile = Paths.get(“.\\result.pdf”);

// Create HTTP client instance
OkHttpClient webClient = new OkHttpClient();

// Prepare URL for `HTML to PDF` API call
String query = String.format(
“https://api.pdf.co/v1/pdf/convert/from/html?name=%s”,
destinationFile.getFileName());

// Make correctly escaped (encoded) URL
URL url = null;
try
{
url = new URI(null, query, null).toURL();
}
catch (URISyntaxException e)
{
e.printStackTrace();
}

// Prepare request body in JSON format
JsonObject jsonBody = new JsonObject();
jsonBody.add(“html”, new JsonPrimitive(template));
jsonBody.add(“templateData”, new JsonPrimitive(templateData));

RequestBody body = RequestBody.create(MediaType.parse(“application/json”), jsonBody.toString());

// Prepare request
Request request = new Request.Builder()
.url(url)
.addHeader(“x-api-key”, API_KEY) // (!) Set API Key
.addHeader(“Content-Type”, “application/json”)
.post(body)
.build();
// Execute request
Response response = webClient.newCall(request).execute();

if (response.code() == 200)
{
// Parse JSON response
JsonObject json = new JsonParser().parse(response.body().string()).getAsJsonObject();

boolean error = json.get(“error”).getAsBoolean();
if (!error)
{
// Get URL of generated PDF file
String resultFileUrl = json.get(“url”).getAsString();

// Download PDF file
downloadFile(webClient, resultFileUrl, destinationFile.toFile());

System.out.printf(“Generated PDF file saved as \”%s\” file.”, destinationFile.toString());
}
else
{
// Display service reported error
System.out.println(json.get(“message”).getAsString());
}
}
else
{
// Display request error
System.out.println(response.code() + ” ” + response.message());
}
}

public static void downloadFile(OkHttpClient webClient, String url, File destinationFile) throws IOException
{
// Prepare request
Request request = new Request.Builder()
.url(url)
.build();
// Execute request
Response response = webClient.newCall(request).execute();

byte[] fileBytes = response.body().bytes();

// Save downloaded bytes to file
OutputStream output = new FileOutputStream(destinationFile);
output.write(fileBytes);
output.flush();
output.close();

response.close();
}
}

[/java]


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