dsProject/ds-base/src/main/java/com/dsideal/base/Util/FileUtil.java

package com.dsideal.base.Util;

import com.alibaba.fastjson.JSONObject;
import java.io.*;
@SuppressWarnings("unchecked")
public class FileUtil {
    /**
     * 功能：读取JSON文件，返回一个JSON对象
     * 作者：黄海
     * 时间:2018-12-12
     * @param filePath
     * @return
     */
    public static JSONObject readJsonFile(String filePath)
    {
        String content=txt2String(new File(filePath));
        return JSONObject.parseObject(content);
    }

    /**
     * 功能：将文本文件的内容读到字符串里
     * 作者：黄海
     * 时间：2018-11-22
     *
     * @param file
     * @return
     */
    public static String txt2String(File file) {
        String encoding = "UTF-8";
        Long filelength = file.length();
        byte[] filecontent = new byte[filelength.intValue()];
        try {
            FileInputStream in = new FileInputStream(file);
            in.read(filecontent);
            in.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        try {
            return new String(filecontent, encoding).replaceAll("\r", "");
        } catch (UnsupportedEncodingException e) {
            System.err.println("The OS does not support " + encoding);
            e.printStackTrace();
            return null;
        }
    }
}