public static void printFile(String path) throws Exception {

        File file = new File(path);

        File[] fies=file.listFiles();

            for(File f:fies){

            System.out.println("file "+f.getName());

                 String fileExt=f.getName().substring(f.getName().indexOf(".")+1,f.getName().length());

                  if("pdf".equalsIgnoreCase(fileExt)){

                    String filepath=path+File.separator+f.getName();

                    File pdfFile=new File(filepath);

                    //构建打印请求属性集

                    PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();

                    //设置打印格式，因为未确定文件类型，这里选择AUTOSENSE

                    DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;

                    //查找所有的可用打印服务

                    PrintService printService[] = PrintServiceLookup.lookupPrintServices(flavor, pras);

                    //定位默认的打印服务

                    PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();

                     //显示打印对话框

                    //PrintService service = ServiceUI.printDialog(null, 200, 200, printService,   defaultService, flavor, pras);

                    if(defaultService!=null){

                        DocPrintJob job = defaultService.createPrintJob(); //创建打印作业

                        FileInputStream fis = new FileInputStream(pdfFile); //构造待打印的文件流

                        DocAttributeSet das = new HashDocAttributeSet();

                        Doc doc = new SimpleDoc(fis, flavor, das); //建立打印文件格式

                        job.print(doc, pras); //进行文件的打印

                }

                    f.delete();

            }

        }

      }

    public static void main(String[] args) {

        //System.out.println("Value:"+test());

        //打印pdf的一个方法，首先安装下PDFCreator软件

        try {

            printFile("D:"+File.separator);

        } catch (Exception e) {

            System.out.println("打印文件异常："+e.getMessage());

            e.printStackTrace();

        }

    }

        <dependency>

            <groupId>org.apache.pdfbox</groupId>

            <artifactId>pdfbox</artifactId>

            <version>2.0.3</version>

        </dependency>

import java.awt.print.Book;

import java.awt.print.PageFormat;

import java.awt.print.Paper;

import java.awt.print.PrinterException;

import java.awt.print.PrinterJob;

import java.io.*;

import java.net.HttpURLConnection;

import java.net.URL;

import javax.print.attribute.HashPrintRequestAttributeSet;

import javax.print.attribute.PrintRequestAttributeSet;

import javax.print.attribute.standard.PageRanges;

import org.apache.pdfbox.pdmodel.PDDocument;

import org.apache.pdfbox.printing.PDFPageable;

import org.apache.pdfbox.printing.PDFPrintable;

public final class PrintUtils

{

    public static void main(String[] args) {

        String fileURL = "http";

        String fileName = ".pdf文件";

        downloadFile(fileURL,fileName);

        printWithDialog(getFilePath(fileName));

    }

    public static void printWithDialog(String filePath) {

        try {

            PDDocument document = PDDocument.load(new File(filePath));

            PrinterJob job = PrinterJob.getPrinterJob();

            job.setPageable(new PDFPageable(document));

            if (job.printDialog()){

                job.print();

            }

        } catch (IOException e) {

            e.printStackTrace();

        } catch (PrinterException e) {

            e.printStackTrace();

        }

    }

    public static String getFilePath(String fileName){

        File path = new File(System.getProperty("user.dir").concat("/downFile"));

        if (!path.exists() && !path.isDirectory()) {

            path.mkdir();

        }

        String filePath = path + "/" + fileName;

        return filePath;

    }

    public static boolean downloadFile(String fileURL,String fileName) {

        try {

            URL url = new URL(fileURL);

            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            DataInputStream in = new DataInputStream(connection.getInputStream());

            DataOutputStream out = new DataOutputStream(new FileOutputStream(getFilePath(fileName)));

            byte[] buffer = new byte[];

            int count = ;

            while ((count = in.read(buffer)) > ) {

                out.write(buffer, , count);

            }

            out.close();

            in.close();

            return true;

        } catch (Exception e) {

            return false;

        }

    }

}