Java 文件处理

读写

写入文本

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String filePath = request.getSession().getServletContext().getRealPath("/index.html");
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(filePath), StandardCharsets.UTF_8));
writer.write(html);
writer.close();

目录

目录下的文件

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for (File file : new File("D:\\temp\\upload").listFiles()) {
    System.out.println(file.getAbsolutePath());
}