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其读取e69da5e6ba903231313335323631343130323136353331333365643632方法为：import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.util.ArrayList;

public class readFile {

private static ArrayList listname = new ArrayList();

public static void main(String[] args)throws Exception{

readAllFile("C:/Users/HP/Desktop");

System.out.println(listname.size());

}

public static void readAllFile(String filepath) {

File file= new File(filepath);

if(!file.isDirectory()){

listname.add(file.getName());

}else if(file.isDirectory()){

System.out.println("文件");

String[] filelist=file.list();

for(int i = 0;i

File readfile = new File(filepath);

if (!readfile.isDirectory()) {

listname.add(readfile.getName());

} else if (readfile.isDirectory()) {

readAllFile(filepath + "\\" + filelist[i]);//递归

}

}

}

for(int i = 0;i

System.out.println(listname.get(i));

}

}

}

话不多说，直接上代码

import lombok.Data;

@Data

public class Tree {

private Integer id;

private String name;//文件夹或者文件名称

private String path;//全路径,或则部分路径,自己决定

private Integer parentId;//父节点id

public Tree(Integer id, String name, String path, Integer parentId) {

this.id = id;

this.name = name;

this.path = path;

this.parentId = parentId;

}

}

import io.swagger.annotations.Api;

import io.swagger.annotations.ApiImplicitParam;

import lombok.AllArgsConstructor;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import java.io.File;

import java.io.FileNotFoundException;

import java.util.ArrayList;

import java.util.List;

@RestController

@AllArgsConstructor

@RequestMapping("/tree")

@Api(tags = "获取本地文件夹数据组装树形结构")

public class FileController {

@Autowired

private FileService service;

private static List list = new ArrayList<>();//用来存放数据

private static Integer id = 0;//因为测试使用，当初主键id来用

@GetMapping

@ApiImplicitParam(name = "fileName", value = "文件夹名称", dataType = "String", required = true)

public Result getTree(String fileName) {

int parentid = 0; //初始化父节点id

List trees = new ArrayList<>();

try {

file(fileName, parentid);

trees = service.getList(FileController.list, parentid);

} catch (FileNotFoundException e) {

e.printStackTrace();

}

return ResultUtils.success(trees);

}

public static void file(String filepath, int parentid) throws FileNotFoundException {

File file = new File(filepath);

//1.判断文件

if (!file.exists()) {

throw new FileNotFoundException("文件不存在");

}

//2.是文件该怎么执行

if (file.isFile()) {

String name = file.getName();

String path = file.getAbsolutePath();

Tree tree = new Tree(id++, name, path, parentid);

list.add(tree);

return;

}

//3.获取文件夹路径下面的所有文件递归调用；

if (file.isDirectory()) {

String name = file.getName();

String path = file.getAbsolutePath();

Tree tree = new Tree(id++, name, name, parentid);

list.add(tree);

String[] list = file.list();

for (int i = 0; i < list.length; i++) {

String s = list[i];

String newFilePath = path + "\\" + s;//根据当前文件夹，拼接其下文文件形成新的路径

file(newFilePath, tree.getId());

}

}

}

}

import org.springframework.stereotype.Service;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

@Service

public class FileServiceImpl implements FileService {

@Override

public List getList(List list, int parentid) {

List listTree = new ArrayList();

for (int i = 0; i < list.size(); i++) {

Tree tree = list.get(i);

if (tree.getParentId() == parentid) {

Map map = new HashMap<>();

map.put("name", tree.getName());

if (tree.getPath().contains(".pdf")||tree.getPath().contains(".PDF")

||tree.getPath().contains(".jpg")||tree.getPath().contains(".JPG")

||tree.getPath().contains(".doc")||tree.getPath().contains(".gim")) {

map.put("url", tree.getPath());

listTree.add(map);

} else {

list.remove(i);

map.put("child", getList(list, tree.getId()));

listTree.add(map);

}

}

}

return listTree;

}

}

本文地址：https://blog.csdn.net/bc_520/article/details/111839724

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