操作文件讀寫JSON的建議工具類

首先附上工具類代碼：

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;

import java.io.*;
import java.nio.charset.StandardCharsets;

/**
 * @author chenzhen
 * Created by chenzhen on 2020/5/6.
 */
@Slf4j
public class FileUtils {


    public static JSONObject readJsonFile(String fileName) {
        String jsonStr = "";
        try {
            RandomAccessFile rf = new RandomAccessFile(fileName,"rws");
            int ch = 0;
            StringBuffer sb = new StringBuffer();
            while ((ch = rf.read()) != -1) {
                sb.append((char) ch);
            }
            rf.close();
            jsonStr = sb.toString();
            return JSONObject.parseObject(jsonStr);
        } catch (Exception e) {
            e.printStackTrace();
            return new JSONObject();
        }
    }

    public static JSONArray readJsonArrayFile(String hostListPath) {
        String jsonStr = "";
        try {
            RandomAccessFile rf = new RandomAccessFile(hostListPath,"rws");
            int ch = 0;
            StringBuffer sb = new StringBuffer();
            while ((ch = rf.read()) != -1) {
                sb.append((char) ch);
            }
            rf.close();
            jsonStr = sb.toString();
            return JSONArray.parseArray(jsonStr);
        } catch (Exception e) {
            e.printStackTrace();
            return new JSONArray();
        }
    }

    public static boolean writeJSONStringToFile(String toJSONString, String filePath) {
        try {
            File file = new File(filePath);
            if (file.exists()){
                boolean delete = file.delete();
                if (delete){
                    log.info("文件已清理，準備創建");
                }else {
                    log.info("文件被鎖，清理創建");
                }
            }
            boolean newFile = file.createNewFile();
            if (newFile){
                log.info("新文件已創建，準備寫入");
            }else {
                log.info("新文件創建失敗");
            }
            RandomAccessFile rf = new RandomAccessFile(filePath,"rws");
            rf.write(toJSONString.getBytes());
            rf.close();
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
}

考慮到在寫文件的時候會出現髒數據，所以就考慮使用RandomAccessFile類來做，使用rws模式，方便快捷完成鎖機制的處理。有啥問題大家評論見