java实现在线浏览PDF文档功能

        //设置响应内容类型为PDF类型  
        response.setContentType("application/pdf");  
          
        ServletOutputStream sos = response.getOutputStream();  
          
        //不在网页中打开，而是直接下载该文件，下载后的文件名为“Example.pdf”  
        //response.setHeader("Content-disposition", "attachment;filename=Example.pdf");  
          
        File pdf = null;  
        FileInputStream fis = null;  
        byte[] buffer = new byte[1024*1024];  
        pdf = new File("D:\\test.pdf");  
        response.setContentLength((int) pdf.length());  
        fis = new FileInputStream(pdf);  
        int readBytes = -1;  
        while((readBytes = fis.read(buffer, 0, 1024*1024)) != -1){  
            sos.write(buffer, 0, 1024*1024);  
        }  
        sos.close();  
        fis.close();