Java的文件拷贝和文件删除

java没有拷贝函数，不能删除含有文件目录，需要自己实现。

    public static boolean fileCopy(File src, File destDir){
        if(!destDir.exists()){
            destDir.setWritable(true);
            destDir.setReadable(true);
            boolean res = destDir.mkdirs();
            if(!res){
                LogMessageMgr.i(TAG, "FileCpoy mkdir failed:" + destDir.getPath());
                return false;
            }
        }
        if(src.isDirectory()){
            File[] files = src.listFiles();
            for(File file:files){
                File destSubDir = new File(destDir.getPath() + File.separator + src.getName());
                boolean res = fileCopy(file, destSubDir);
                if(!res){
                    return false;
                }
            }
        }else if(src.isFile()){
            File dest = new File(destDir.getPath() + File.separator + src.getName());
            dest.setWritable(true);
            dest.setReadable(true);
            FileInputStream fis = null;
            FileOutputStream fos = null;
            try {
                fis = new FileInputStream(src);
                fos = new FileOutputStream(dest);
                byte[] buffer = new byte[1024*64];
                do{
                    int len = fis.read(buffer);
                    if(len < 0){
                        break;
                    }
                    if(len > 0){
                        fos.write(buffer, 0, len);
                    }
                }while(true);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
                // 测试中发现rmnt这个文件在升级无法被替换，忽略这个异常。
                LogMessageMgr.i(TAG, "FileCpoy ignore FileNotFoundException:" + e.getMessage());
            } catch (IOException e) {
                e.printStackTrace();
                LogMessageMgr.i(TAG, "FileCpoy ignore FileNotFoundException:" + e.getMessage());
                return false;
            } finally{
                try {
                    if(null != fis){
                        fis.close();
                    }
                    if(null != fos){
                        fos.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return true;
    }
    
    public static void fileDelete(File file){
        if(file.isFile()){
            file.delete();
        }else if(file.isDirectory()){
            File[] subFiles = file.listFiles();
            for(File subFile:subFiles){
                fileDelete(subFile);
            }
            file.delete();
        }
    }