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ReceiptGeneration.java
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ReceiptGeneration.java
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package com.example.relationalDB.receipt;
import com.itextpdf.html2pdf.ConverterProperties;
import com.itextpdf.html2pdf.HtmlConverter;
import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.stereotype.Component;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
@Component
public class ReceiptGeneration {
private static final Logger logger = LoggerFactory.getLogger(ReceiptGeneration.class);
public String generate(String fileName) {
File templateFile;
File tempFile = null;
String htmlString;
try {
templateFile = new ClassPathResource("templates/receipt.html").getFile();
tempFile = File.createTempFile(System.currentTimeMillis() + "", ".html");
tempFile.getParentFile().mkdirs();
File htmlTemplateFile = new File(templateFile.getAbsolutePath());
htmlString = FileUtils.readFileToString(htmlTemplateFile, "UTF-8");
htmlString = htmlString.replace("$janAmount", "1,000");
htmlString = htmlString.replace("$febAmount", "2,000");
FileUtils.writeStringToFile(tempFile, htmlString, "UTF-8");
} catch (IOException e) {
e.printStackTrace();
logger.error(e.getMessage());
}
ConverterProperties converterProperties = new ConverterProperties();
try (FileOutputStream pdfFile = new FileOutputStream(fileName)) {
HtmlConverter.convertToPdf(new FileInputStream(tempFile), pdfFile,
converterProperties);
} catch (IOException e) {
e.printStackTrace();
logger.info(e.getMessage());
}
tempFile.deleteOnExit();
return fileName;
}
}