Java对文件的IO读写

使用场景

特殊处理文件中有问题的部分，在读的过程中过滤掉错误的内容，然后再重新写入到文件中。

代码

private void preDeal(File file) throws IOException {
    try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(file), "GBK"))) {
        LOG.info("开始读取{}文件", fileName);
        String str;
        while ((str = bufferedReader.readLine()) != null) {
            fileRowList.add(str);
        }
        LOG.info("读取{}文件完成", fileName);
    }
    LOG.info("开始向{}文件填充XX数据", fileName);
    fileRowList.addAll(fileRowList.size() - 1, new ArrayList<>());
    LOG.info("向{}文件填充XX数据完成", fileName);
    try (BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), "GBK"))) {
        fileRowList.forEach(v -> {
            try {
                bufferedWriter.write(v);
                bufferedWriter.newLine();
            } catch (IOException e) {
                LOG.error("重{}}文件出错", fileName);
                throw TsieExceptionUtils.newBusinessException(e);
            }
        });
        bufferedWriter.flush();
    }
}

待优化的点

• 使用try-with-resouce ✔