如何读取pdf文件并将其写入outputStream [英] How to read pdf file and write it to outputStream

问题描述

我需要读取文件路径为C:file.pdf"的 pdf 文件并将其写入 outputStream.最简单的方法是什么?

I need to read a pdf file with filepath "C:file.pdf" and write it to outputStream. What is the easiest way to do that?

@Controller
public class ExportTlocrt {

@Autowired
private PhoneBookService phoneBookSer;

private void setResponseHeaderTlocrtPDF(HttpServletResponse response) {
    response.setContentType("application/pdf");
    response.setHeader("content-disposition", "attachment; filename=Tlocrt.pdf" );
} 

@RequestMapping(value = "/exportTlocrt.html", method = RequestMethod.POST)
public void exportTlocrt(Model model, HttpServletResponse response, HttpServletRequest request){

    setResponseHeaderTlocrtPDF(response);
    File f = new File("C:\Tlocrt.pdf");

    try {
        OutputStream os = response.getOutputStream();
        byte[] buf = new byte[8192];
        InputStream is = new FileInputStream(f);
        int c = 0;
        while ((c = is.read(buf, 0, buf.length)) > 0) {
            os.write(buf, 0, c);
            os.flush();
        }
        os.close();
        is.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

}
}

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推荐答案

import java.io.*;


public class FileRead {


    public static void main(String[] args) throws IOException {


        File f=new File("C:\Documents and Settings\abc\Desktop\abc.pdf");

        OutputStream oos = new FileOutputStream("test.pdf");

        byte[] buf = new byte[8192];

        InputStream is = new FileInputStream(f);

        int c = 0;

        while ((c = is.read(buf, 0, buf.length)) > 0) {
            oos.write(buf, 0, c);
            oos.flush();
        }

        oos.close();
        System.out.println("stop");
        is.close();

    }

}

目前最简单的方法.希望这会有所帮助.

The easiest way so far. Hope this helps.

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