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https://github.com/cherfia/jotenberg
A Java library that interacts with Gotenberg's different modules to convert a variety of document formats to PDF files.
https://github.com/cherfia/jotenberg
chromium dotx gotenberg html libreoffice markdown pdf pptx screenshots xslx
Last synced: 3 months ago
JSON representation
A Java library that interacts with Gotenberg's different modules to convert a variety of document formats to PDF files.
- Host: GitHub
- URL: https://github.com/cherfia/jotenberg
- Owner: cherfia
- License: mit
- Created: 2022-10-16T11:50:30.000Z (about 2 years ago)
- Default Branch: main
- Last Pushed: 2024-07-05T17:16:12.000Z (4 months ago)
- Last Synced: 2024-07-05T22:31:54.090Z (4 months ago)
- Topics: chromium, dotx, gotenberg, html, libreoffice, markdown, pdf, pptx, screenshots, xslx
- Language: Java
- Homepage:
- Size: 117 KB
- Stars: 13
- Watchers: 1
- Forks: 2
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE.md
Awesome Lists containing this project
- awesome-gotenberg - Java - cherfia/jotenberg
README
# Jotenberg
[](https://github.com/cherfia/jotenberg/actions/workflows/build.yml)
A Java library that interacts with [Gotenberg](https://gotenberg.dev/)'s different modules to convert a variety of
document formats to PDF files.
## Snippets
To incorporate `jotenberg` into your project, follow the snippets below for Apache Maven and Gradle dependencies.
### Apache Maven
```xml
dev.inaka
jotenberg
1.1.0
```
### Gradle
```gradle
implementation group: 'dev.inaka', name: 'jotenberg', version: '1.1.0'
```
## Prerequisites
Before attempting to use `Jotenberg`, be sure you install [Docker](https://www.docker.com/) if you have not already done
so.
Once the docker Daemon is up and running, you can start a default Docker container
of [Gotenberg](https://gotenberg.dev/) as follows:
```bash
docker run --rm -p 8090:8090 gotenberg/gotenberg:8 gotenberg --api-port=8090
```
After that, you need to download the latest `Jotenberg` JAR library from the
GitHub [Releases](https://github.com/cherfia/jotenberg/releases) page and add it to your Java project `classpath`.
## Get Started
Create an instance of `Jotenberg` class and pass your `Gotenberg` `endpoint` url as a constructor parameter.
```java
Jotenberg client = new Jotenberg("http://localhost:8090/");
```
### Chormium
`Jotenberg` client comes with a `convert` method that calls one of
Chromium's [routes](https://gotenberg.dev/docs/modules/chromium#routes) to convert `html` and `markdown` files, or
a `url` to a `CloseableHttpResponse` that contains the `HttpEntity` which holds the content of the converted PDF file.
`convert` expects three parameters; the first parameter represents what will be converted (i.e. `url`, `html`,
or `markdown` files), the second one is a `ChromiumPageProperties` parameter, and the third is a `ChromiumOptions`
parameter.
#### URL
```java
CloseableHttpResponse response = client.convert("https://gotenberg.dev/", pageProperties, options);
```
#### HTML
The only requirement is that the file name should be `index.html`.
```java
File file = new File("path/to/index.html");
CloseableHttpResponse response = client.convert(file, pageProperties, options);
```
#### Markdown
This route accepts an `index.html` file plus markdown files.
```java
List files = new ArrayList<>();
files.
add(new File("path/to/index.html"));
files.
add(new File("path/to/markdown.md"));
CloseableHttpResponse response = client.convert(files, pageProperties, options);
```
### Libre Office
`Jotenberg` client provides a `convertWithLibreOffice` method which interacts
with [LibreOffice](https://gotenberg.dev/docs/modules/libreoffice) to convert different types of documents such
as `.docx`, `.epub`, `.eps`, and so on. You can find the list of all file
extensions [here](https://gotenberg.dev/docs/modules/libreoffice#route).
```java
List files = new ArrayList<>();
files.
add(new File("path/to/file.docx"));
files.
add(new File("path/to/file.xlsx"));
CloseableHttpResponse response = client.convertWithLibreOffice(files, pageProperties, options);
```
### PDF Engines
Similarly, `Jotenberg` client provides a `convertWithPdfEngines` method which interacts
with [PDF Engines](https://gotenberg.dev/docs/modules/pdf-engines) to convert PDF files to a specific format (
i.e. `PDF/A-1a`, `PDF/A-2b`, `PDF/A-3b`)).
The supported formats can be found in `PdfFormat`.
```java
List files = new ArrayList<>();
files.
add(new File("path/to/first.pdf"));
files.
add(new File("path/to/second.pdf"));
PageProperties pageProperties = new PageProperties.Builder()
.addPdfFormat(PdfFormat.A_3B.format())
.build();
CloseableHttpResponse response = client.convertWithPdfEngines(files, pageProperties, options);
```
Additionally, you can also use `merge` method to alphabetically merge the PDF files.
```java
List files = new ArrayList<>();
files.
add(new File("path/to/first.pdf"));
files.
add(new File("path/to/second.pdf"));
CloseableHttpResponse response = client.merge(files, pageProperties, options);
```
## Example
The following is a short snippet of how to use the library.
```java
import dev.inaka.Jotenberg;
import dev.inaka.chromium.ChromiumPageProperties;
import org.apache.commons.io.FileUtils;
import java.nio.file.Files;
import java.nio.file.Paths;
public class Main {
public static void main(String[] args) {
try (var client = new Jotenberg("http://localhost:80/")) {
var url = "https://gotenberg.dev/";
var properties = new PageProperties.Builder()
.addMarginTop(1.0f)
.addMarginLeft(0.5f)
.addMarginBottom(1.0f)
.addMarginTop(0.5f)
.addPrintBackground(true)
.build();
var response = client.convert(url, properties);
var projectDir = Paths.get("").toAbsolutePath().normalize();
var tempDir = Files.createTempDirectory(projectDir, "temp_");
var tempFile = Files.createTempFile(tempDir, "PDF_", ".pdf").toFile();
var pdfContent = response.getEntity().getContent();
FileUtils.copyInputStreamToFile(pdfContent, tempFile);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
```