请问java如何复制gif图片

Question

以下代码经测试，可以支持中文处理，并且可以复制多种类型，比如txt，xml，jpg，doc等多种格式，那么gif图片复制后会损坏，请问怎么操作

public void copyFile(String src,String dest) throws IOException{
         FileInputStream in=new FileInputStream(src);
         File file=new File(dest);
         if(!file.exists())
             file.createNewFile();
         FileOutputStream out=new FileOutputStream(file);
         int c;
         byte buffer[]=new byte[1024];
         while((c=in.read(buffer))!=-1){
             for(int i=0;i<c;i++)
                 out.write(buffer[i]);        
         }
         in.close();
         out.close();
     }

Answer 1

这个是我们项目上用过的

public static void copyFile(String newPath,String oldPath) throws Exception{
        InputStream inStream = null;
        FileOutputStream fs = null;
        try{
            int bytesum = 0;
            int byteread = 0;
            File oldfile = new File(oldPath); 
            if (oldfile.exists()) { //文件存在时 
                inStream = new FileInputStream(oldPath); //读入原文件 
                fs = new FileOutputStream(newPath); 
                byte[] buffer = new byte[1444]; 
                while ( (byteread = inStream.read(buffer)) != -1) { 
                    bytesum += byteread; //字节数 文件大小
                    System.out.println(bytesum);
                    fs.write(buffer, 0, byteread);
                }
            }
        }catch (Exception e) {
            System.out.println("复制单个文件操作出错");
            e.printStackTrace();
            throw e;
        }finally {
            if(inStream != null){
                inStream.close();
            }
            if(fs != null){
                fs.close();
            }
        }
    }