Add Image by finding target coordinates - Java
PDF Add Text, Signatures and Images to PDF sample in Java demonstrating ‘Add Image by finding target coordinates’
Main.java
package com.company;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import okhttp3.*;
import java.io.*;
import java.net.*;
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
final static String API_KEY = "******************************";
// Direct URL of source PDF file.
// You can also upload your own file into PDF.co and use it as url. Check "Upload File" samples for code snippets: https://github.com/bytescout/pdf-co-api-samples/tree/master/File%20Upload/
final static String SourceFileUrl = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-edit/sample.pdf";
// Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
final static String Pages = "";
// PDF document password. Leave empty for unprotected documents.
final static String Password = "";
// Destination PDF file name
final static Path ResultFile = Paths.get(".\\result.pdf");
// Image params
private final static int Width1 = 119;
private final static int Height1 = 32;
private final static String ImageUrl = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-edit/logo.png";
public static void main(String[] args) throws IOException
{
// Create HTTP client instance
OkHttpClient webClient = new OkHttpClient();
// Find Text coordinates to add image
ResultCoOrdinates oCoordinates = FindCoordinates(API_KEY, SourceFileUrl, "Your Company Name");
int X1 = 450;
int Y1 = oCoordinates.y;
// * Add image *
// Prepare URL for `PDF Edit` API call
String query = "https://api.pdf.co/v1/pdf/edit/add";
// Make correctly escaped (encoded) URL
URL url = null;
try
{
url = new URI(null, query, null).toURL();
}
catch (URISyntaxException e)
{
e.printStackTrace();
}
// Create JSON payload
String jsonPayload = String.format("{
\"name\": \"%s\",
\"url\": \"%s\",
\"password\": \"%s\",
images: [{
\"url\": \"%s\"
\"pages\": \"%s\",
\"x\": \"%s\",
\"y\": \"%s\",
\"width\": \"%s\",
\"height\": \"%s\"
}]
}",
ResultFile.getFileName(),
SourceFileUrl,
Password,
ImageUrl,
Pages,
X1,
Y1,
Width1,
Height1,
);
// Prepare request body
RequestBody body = RequestBody.create(MediaType.parse("application/json"), jsonPayload);
// 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 output file
String resultFileUrl = json.get("url").getAsString();
// Download the image file
downloadFile(webClient, resultFileUrl, ResultFile);
System.out.printf("Generated file saved to \"%s\" file.", ResultFile.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, Path 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.toFile());
output.write(fileBytes);
output.flush();
output.close();
response.close();
}
public static ResultCoOrdinates FindCoordinates(String API_KEY, String SourceFileURL, String SearchString) throws IOException {
ResultCoOrdinates oResult = new ResultCoOrdinates();
// Create HTTP client instance
OkHttpClient webClient = new OkHttpClient();
// Prepare URL for PDF text search API call.
// See documentation: https://apidocs.pdf.co
String query = String.format(
"https://api.pdf.co/v1/pdf/find",
SourceFileURL,
SearchString);
// Make correctly escaped (encoded) URL
URL url = null;
try
{
url = new URI(null, query, null).toURL();
}
catch (URISyntaxException e)
{
e.printStackTrace();
}
catch (MalformedURLException e) {
e.printStackTrace();
}
// Create JSON payload
String jsonPayload = String.format("{\"url\": \"%s\", \"searchString\": \"%s\" }",
SourceFileURL,
SearchString);
// Prepare request body
RequestBody body = RequestBody.create(MediaType.parse("application/json"), jsonPayload);
// 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)
{
JsonObject item = (JsonObject) json.get("body").getAsJsonArray().get(0);
oResult.x = item.get("left").getAsInt();
oResult.y = item.get("top").getAsInt();
oResult.width = item.get("width").getAsInt();
oResult.height = item.get("height").getAsInt();
}
}
else
{
// Display request error
System.out.println(response.code() + " " + response.message());
}
return oResult;
}
}
class ResultCoOrdinates{
public int x;
public int y;
public int width;
public int height;
}
PDF.co Web API: the Web API with a set of tools for documents manipulation, data conversion, data extraction, splitting and merging of documents. Includes image recognition, built-in OCR, barcode generation and barcode decoders to decode bar codes from scans, pictures and pdf.
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