Extract Data from Invoices or Receipts in Java

CreateTemplateForInvoice.java

// Create Template to Parse Data from Invoice using Java
// First create Template Items
TemplateItem[] templateItems = new TemplateItem[]
{
    new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 135), new Size(100, 10))), "FromCompany"),
    new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 150), new Size(100, 35))), "FromAddress"),
    new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 190), new Size(150, 2))), "FromEmail"),
    new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 250), new Size(100, 2))), "ToCompany"),
    new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 260), new Size(100, 15))), "ToAddress"),
    new TemplateField(new TemplateFixedPosition(new Rectangle(new Point(35, 290), new Size(150, 2))), "ToEmail"),
    new TemplateField(new TemplateRegexPosition("Invoice Number"), "InvoiceNumber"),
    new TemplateField(new TemplateLinkedPosition(
            "InvoiceNumber",
            new Size(200, 15),
            new TemplateLinkedPositionEdges(false, false, true, false)),
            "InvoiceNumberValue"),
    new TemplateField(new TemplateRegexPosition("Order Number"), "InvoiceOrder"),
    new TemplateField(new TemplateLinkedPosition(
            "InvoiceOrder",
            new Size(200, 15),
            new TemplateLinkedPositionEdges(false, false, true, false)),
            "InvoiceOrderValue"),
    new TemplateField(new TemplateRegexPosition("Invoice Date"), "InvoiceDate"),
    new TemplateField(new TemplateLinkedPosition(
            "InvoiceDate",
            new Size(200, 15),
            new TemplateLinkedPositionEdges(false, false, true, false)),
            "InvoiceDateValue"),
    new TemplateField(new TemplateRegexPosition("Due Date"), "DueDate"),
    new TemplateField(new TemplateLinkedPosition(
            "DueDate",
            new Size(200, 15),
            new TemplateLinkedPositionEdges(false, false, true, false)),
            "DueDateValue"),
    new TemplateField(new TemplateRegexPosition("Total Due"), "TotalDue"),
    new TemplateField(new TemplateLinkedPosition(
            "TotalDue",
            new Size(200, 15),
            new TemplateLinkedPositionEdges(false, false, true, false)),
            "TotalDueValue")
};
// Transform into template
Template template = new Template(Arrays.asList(templateItems));

ExtractDataFromInvoice.java

// Parse the PDF Invoice using the defined Template in Java
Parser parser = new Parser("filePath/invoice.pdf");
DocumentData data = parser.parseByTemplate(template);
// Print the extracted data
for (int i = 0; i < data.getCount(); i++) {
    // Printing Field Name
    System.out.print(data.get(i).getName() + ": ");
    // Cast PageArea property value to PageTextArea
    // as we have defined only text fields in the template
    PageTextArea area = data.get(i).getPageArea() instanceof PageTextArea
            ? (PageTextArea) data.get(i).getPageArea()
            : null;
    System.out.println(area == null ? "Not a template field" : area.getText());
}

ParsePDFInvoiceByTemplate.java

Parser parser = new Parser("filePath/invoice.pdf");
DocumentData data = parser.parseByTemplate(template);