4dkankan-fusion/src/main/java/com/fdkankan/fusion/common/util/FileWriterUtil.java

package com.fdkankan.fusion.common.util;

import java.io.*;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;

import static cn.hutool.core.util.ClassUtil.getClassLoader;

public class FileWriterUtil {

    public static void writerJson(String tagPath,String fileName,String msg){
        try {
            File file = new File(tagPath);
            if(!file.exists()){
                file.mkdirs();
            }
            FileWriter fw = new FileWriter(tagPath +File.separator +fileName);
            fw.write(msg);
            fw.flush();
            fw.close();
        }catch (Exception e){
            e.printStackTrace();
        }
    }

    public static  String readFile(String file) throws Exception {
        BufferedReader reader = new BufferedReader(new FileReader(file));
        String line = null;
        StringBuilder stringBuilder = new StringBuilder();
        String ls = System.getProperty("line.separator");
        try {
            while((line = reader.readLine()) != null) {
                stringBuilder.append(line);
                stringBuilder.append(ls);
            }
            return stringBuilder.toString();
        } finally {
            reader.close();
        }
    }

    public static void streamToFile(String fileName,String newFilePath){
        InputStream stream = getClassLoader().getResourceAsStream(fileName);
        try {
            assert stream != null;
            java.nio.file.Files.copy(
                    stream,
                    Paths.get(newFilePath),
                    new StandardCopyOption[]{StandardCopyOption.REPLACE_EXISTING});
        }catch (Exception e){
            e.printStackTrace();
        }
    }

    public static File getObjLasPlyFile(File objPathFile) {
        if(objPathFile.isDirectory()){
            File[] file = objPathFile.listFiles();
            if(file == null || file.length <=0){
                return null;
            }
            for (File file1 : file) {
                if(file1 == null){
                    continue;
                }
                if(file1.isDirectory()){
                    return getObjLasPlyFile(file1);
                }
                if(file1.getName().contains("obj") || file1.getName().contains("ply") || file1.getName().contains("las")){
                    return file1;
                }

            }
        }
        return null;
    }

}