How to read and write files in java to avoid garbled characters-JavaBase-php.cn

How to read and write files in java to avoid garbled characters

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Release： 2019-12-17 11:04:03

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How to read and write files in java to avoid garbled characters

java读写文件避免乱码的方法：

1.读文件：

/**
      * 读取文件内容
      * 
      * @param filePathAndName
      * String 如 c:\\1.txt 绝对路径
      * @return boolean
      */
    public static String readFile(String filePath) {
        String fileContent = "";
        try {
            File f = new File(filePath);
            if (f.isFile() && f.exists()) {
                InputStreamReader read = new InputStreamReader(new FileInputStream(f), "UTF-8");
                BufferedReader reader = new BufferedReader(read);
                String line;
                while ((line = reader.readLine()) != null) {
                    fileContent += line;
                }
                read.close();
            }
        } catch (Exception e) {
            System.out.println("读取文件内容操作出错");
            e.printStackTrace();
        }
        return fileContent;
    }

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InputStreamReader类是从字节流到字符流的桥接器：它使用指定的字符集读取字节并将它们解码为字符。它使用的字符集可以通过名称指定，也可以明确指定，或者可以接受平台的默认字符集。

2.写文件

/**
     * 
     * @Title: writeFile
     * @Description: 写文件
     * @param @param filePath 文件路径
     * @param @param fileContent    文件内容
     * @return void    返回类型
     * @throws
     */
    public static void writeFile(String filePath, String fileContent) {
        try {
            File f = new File(filePath);
            if (!f.exists()) {
                f.createNewFile();
            }
            OutputStreamWriter write = new OutputStreamWriter(new FileOutputStream(f), "UTF-8");
            BufferedWriter writer = new BufferedWriter(write);
            writer.write(fileContent);
            writer.close();
        } catch (Exception e) {
            System.out.println("写文件内容操作出错");
            e.printStackTrace();
        }
    }

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OutputStreamWriter是从字符流到字节流的桥接：使用指定的字符集将写入其中的字符编码为字节。它使用的字符集可以通过名称指定，也可以明确指定，或者可以接受平台的默认字符集。

更多java知识请关注java基础教程栏目。

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