你去开源中国网看下，里面有！

用renderBinary返回输入流就可以了

String templateContent = "[InternetShortcut]" + "\n" + "URL= http://www.baidu.com";     
        String realfilename = "百度" + ".url";     
        FileSystemView fsv = FileSystemView.getFileSystemView();      
        String upurl = fsv.getHomeDirectory().toString();     
        System.out.println(upurl);     
        String filename = upurl + "/" + realfilename;     
        File myfile = new File(filename);     
        if(!myfile.exists()){  
            FileOutputStream fileoutputstream = new FileOutputStream(filename);//建立文件输出流      
            byte tag_bytes[] = templateContent.getBytes();     
            fileoutputstream.write(tag_bytes);     
            fileoutputstream.close();     
        }  
        try {     
            File file = new File(upurl, realfilename);     
            BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));     
            byte[] buffer = new byte[111000];     
                
          
            renderBinary(bis,realfilename);
            bis.close();
              
        } catch (Exception e) {     
            e.printStackTrace();     
        }