java调用打印机打印pdf

要在Java中调用打印机打印PDF文件，可以使用Java打印API和PDF渲染库。下面是一个简单的示例代码：

import java.awt.print.PrinterJob;
import java.io.File;
import javax.print.Doc;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.SimpleDoc;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.MediaSizeName;
import javax.print.attribute.standard.OrientationRequested;
import org.icepdf.core.exceptions.PDFException;
import org.icepdf.core.exceptions.PDFSecurityException;
import org.icepdf.core.pobjects.Document;
import org.icepdf.core.util.GraphicsRenderingHints;

public class PrintPDF {
    public static void main(String[] args) {
        try {
            String filePath = "path/to/pdf/file.pdf";
            // 创建PDF文档对象
            Document document = new Document();
            document.setFile(filePath);
            // 获取打印机
            PrintService printService = PrintServiceLookup.lookupDefaultPrintService();
            // 设置打印属性
            PrintRequestAttributeSet printRequestAttributeSet = new HashPrintRequestAttributeSet();
            printRequestAttributeSet.add(MediaSizeName.NA_LETTER);
            printRequestAttributeSet.add(OrientationRequested.PORTRAIT);
            // 创建打印任务
            PrinterJob printerJob = PrinterJob.getPrinterJob();
            printerJob.setPrintService(printService);
            printerJob.setJobName(new File(filePath).getName());
            // 设置打印文档
            DocPrintJob docPrintJob = printService.createPrintJob();
            Doc doc = new SimpleDoc(document, DocFlavor.SERVICE_FORMATTED.PAGEABLE, null);
            // 执行打印任务
            printerJob.setPageable((javax.print.Pageable) doc.getPrintData());
            printerJob.print(printRequestAttributeSet);
            // 关闭文档
            document.dispose();
        } catch (PDFException | PDFSecurityException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

在示例代码中，我们使用了IcePDF作为PDF渲染库，你需要将其添加到项目依赖中。除此之外，还需要引入Java打印API的相关类库。