java 将数据写进文件

Posted 2020-08-22

/*
每次只写入一行数据 只需要调用特定的
方法即可。
*/


package com.second.File;


import java.io.*;


/**
 * Created by hasee on 2016/11/15.
 */
public class WriteFile {
    private BufferedWriter bw = null;

    public int openWrite(String address, String strCodeFormat) {
        if (strCodeFormat == null || address == null || address.length() == 0 || strCodeFormat.length() == 0) {
            //错误代码 101 输入的信息为空
            return 101;
        }
        try {
            bw = new BufferedWriter(
                    new OutputStreamWriter(
                            new FileOutputStream(address), strCodeFormat));
            return 1;
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return 204;
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return 201;
        }
    }

    public int save(String strLine) {
        if (bw == null) {
            return 301;
        }
        try {
            bw.write(strLine);
            return 1;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return 0;
    }

   public int closeWrite() {
        if (bw == null) {
            return 301;
        }
        try {
            bw.close();
            return 1;
        } catch (IOException e) {
            e.printStackTrace();
            return 301;
        }
    }
}