处理json文件中的文件名

package com.vfsd.core;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class ReadJsonAndSaveNewFile {
    private static List<String> json_list = new ArrayList<String>();
    
    public static void main(String[] args) {
        
        String folder="G:\\json_data";
        String endStr=".json";
        boolean isTrue=true;
        listFilesByEndStr(folder, endStr,isTrue);
        
        listJsonFile();
        
    }
    
    public static void listFilesByEndStr(String folder,String endStr,boolean isTrue) {
        File folder1 = new File(folder);
        File[] files = folder1.listFiles();
        
        
        for(File indexFile:files) {
            
            if(indexFile.isDirectory()) {
                String folderPath = indexFile.getAbsolutePath();
                listFilesByEndStr(folderPath,endStr,isTrue);
            }else if(indexFile.isFile()) {
                String fileName = indexFile.getName();
                if(isTrue) {
                    if(fileName.endsWith(endStr)) {
                        String folderPath = indexFile.getAbsolutePath();
                        //System.out.println(folderPath);
                        
                        json_list.add(folderPath);
                    }
                }else {
                    if(!fileName.endsWith(endStr)) {
                        //System.out.println(fileName);
                    }
                }
                
            }
        }
    }
    
    public static void listJsonFile() {
        
        String outputPath = "G:\\json_data2";
        int num=1000;
        for(int k=0;k<json_list.size();k++){
            String indexJsonFilePath = json_list.get(k);
            System.out.println(indexJsonFilePath);
            String imgFilePath = indexJsonFilePath.replace(".json", ".jpg");
            System.out.println(imgFilePath);
            
            String newJsonFilePath = outputPath+"\\"+num+".json";
            String newImgFilePath = outputPath+"\\"+num+".jpg";
            String imgName = num+".jpg";
            
            try {
                copyImg(imgFilePath,newImgFilePath);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
            
            try {
                copyJson(indexJsonFilePath,newJsonFilePath,imgName);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
            num++;
        }
        
        
        
        
        
    }
    
    
    public static void copyImg(String oldImgPath,String newImgPath) throws IOException{
        File oldFile = new File(oldImgPath);
        File newFile = new File(newImgPath);
        
        FileInputStream fileInputStreamObj = new FileInputStream(oldFile);
        FileOutputStream filOutputStreamObj = new FileOutputStream(newFile);
        
        byte[] bytes = new byte[1024];
        int len=0;
        while((len=fileInputStreamObj.read(bytes))!=-1){
            filOutputStreamObj.write(bytes, 0, len);
        }
        
        filOutputStreamObj.flush();
        filOutputStreamObj.close();
        fileInputStreamObj.close();
        
        
    }
    
    
    public static void copyJson(String oldJsonPath,String newJsonPath,String imgName) throws IOException{
        File oldJsonFile = new File(oldJsonPath);
        File newJsonFile = new File(newJsonPath);
        
        FileReader fileReaderObj = new FileReader(oldJsonFile);
        BufferedReader bufferedReaderObj = new BufferedReader(fileReaderObj);
        
        FileWriter fileWriterObj = new FileWriter(newJsonFile);
        BufferedWriter bufferedWriterObj = new BufferedWriter(fileWriterObj);
        
        String lineStr="";
        while((lineStr=bufferedReaderObj.readLine())!=null) {
            if(lineStr.contains("imagePath")){
                //  "imagePath": "u=46225769,59147520&fm=26&fmt=auto&gp=0-1414246.jpg",
                lineStr="\"imagePath\": \""+imgName+"\",";
            }
            bufferedWriterObj.write(lineStr+"\n");
            
        }
        
        
        bufferedWriterObj.flush();
        fileWriterObj.flush();
        bufferedWriterObj.close();
        fileWriterObj.close();
        
        bufferedReaderObj.close();
        fileReaderObj.close();
        
    }
    ///
}

 

 

G:\json_data\u=973425934,2427009704&fm=26&fmt=auto&gp=0-8539165.json
G:\json_data\u=973425934,2427009704&fm=26&fmt=auto&gp=0-8539165.jpg
G:\json_data\u=98157198,2014981619&fm=26&fmt=auto&gp=0-5779385.json
G:\json_data\u=98157198,2014981619&fm=26&fmt=auto&gp=0-5779385.jpg
G:\json_data\u=994802799,2240003585&fm=26&fmt=auto&gp=0-8749040.json
G:\json_data\u=994802799,2240003585&fm=26&fmt=auto&gp=0-8749040.jpg
G:\json_data\u=999068942,1187608502&fm=26&fmt=auto&gp=0-7583789.json
G:\json_data\u=999068942,1187608502&fm=26&fmt=auto&gp=0-7583789.jpg

 

1000.jpg
1000.json
1001.jpg
1001.json
1002.jpg
1002.json

 

同时也修改了json文件中的imagePath对应的值

"imagePath": "1000.jpg",

 

 

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