Java 写入TXT文件，读取TXT文件

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作者：LoveEmperor-王子様

Java 写入TXT文件，读取TXT文件

如果TXT有乱码，请检查编译器的编码设置，某个文件的编码设置，然后重启
输入写入参数需要修改为字符串，然后传参，这里是外部数据调用写TXT文件

public class TxtExport {
    private static String path = "D:/";
    private static String filenameTemp;

    public static void main(String[] args) throws IOException {
//        TxtExport.creatTxtFile();
//        TxtExport.writeTxtFile("TXT文件TXT文件TXT文件");

//        String res = readTxtFunc(filenameTemp);
    }

    public static boolean doTxtExportFunc(List<AuthSysLogsDto> vo)throws IOException{
            boolean Bool =  TxtExport.creatTxtFile();
            boolean writeBool = false;
            if (Bool){
                writeBool =  TxtExport.writeTxtFile(vo);
            }
//            String res = readTxtFunc(filenameTemp);

            return writeBool;
    }

    /**
     * 创建文件
     *
     * @throws IOException
     */
    public static boolean creatTxtFile() throws IOException {
        boolean flag = false;
        Calendar now = Calendar.getInstance();
        filenameTemp = path + "DHTGMIS_"+now.get(Calendar.YEAR)+ (now.get(Calendar.MONTH) + 1)
                + now.get(Calendar.DAY_OF_MONTH)+".txt";
        File filename = new File(filenameTemp);
        if (!filename.exists()) {
            filename.createNewFile();
            flag = true;
        }
        return flag;
    }


    /**
     * 写文件
     *
     * @param vo
     *            新内容
     * @throws IOException
     */
    public static boolean writeTxtFile(List<AuthSysLogsDto> vo) throws IOException {
        // 先读取原有文件内容，然后进行写入操作
        boolean flag = false;


        File readFile=new File(filenameTemp);

        String encoding="Unicode"; //字符编码
        OutputStreamWriter tofile = new OutputStreamWriter(new FileOutputStream(readFile),"GBK");
        BufferedWriter out=new BufferedWriter(tofile);
        try {
            JSONArray json = JSONArray.fromObject(vo);
//            JSONObject jsonObject = JSONObject.fromObject(vo);
            byte data[] = json.toString().getBytes();
            out.write(new String(data,"GBK"));
            flag = true;
        }catch (Exception e){
            e.printStackTrace();
        }
        out.flush();
        out.close();
        return flag;
    }

    public static String readTxtFunc(String fileName){
        String fileContent = "";
        try
        {
            File f = new File(fileName);
            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)
        {
            e.printStackTrace();
        }
        System.out.print(fileContent);
        return fileContent;
    }

}