本篇文章为你整理了java后端分片上传接口（java后端分片上传接口在哪）的详细内容，包含有java后端分片上传接口有哪些 java后端分片上传接口在哪 java 分片上传 java分片上传文件 java后端分片上传接口，希望能帮助你了解 java后端分片上传接口。
File dir = new File(strPath);
File[] files = dir.listFiles(); // 该文件目录下文件全部放入数组
if (files != null) {
for (int i = 0; i files.length; i++) {
String fileName = files[i].getName();
if (files[i].isDirectory()) { // 判断是文件还是文件夹
getFileList(files[i].getAbsolutePath()); // 获取文件绝对路径
} else { // 判断文件名
String strFileName = files[i].getAbsolutePath();
// System.out.println("---" + strFileName);
filelist.add(files[i]);
return filelist;
* 合并文件
* @param from
* @param to
* @throws IOException
public static void mergeFile(String from, String to) throws IOException {
File t = new File(to);
FileInputStream in = null;
FileChannel inChannel = null;
System.out.println("t "+t);
FileOutputStream out = new FileOutputStream(t,true);
FileChannel outChannel = out.getChannel();
File f = new File(from);
System.out.println("f "+f.isDirectory());
// 获取目录下的每一个文件名，再将每个文件一次写入目标文件
if (f.isDirectory()) {
List File list = getAllFileAndSort(from);
System.out.println("sortlist "+list);
// 记录新文件最后一个数据的位置
long start = 0;
for (File file : list) {
in = new FileInputStream(file);
inChannel = in.getChannel();
// 从inChannel中读取file.length()长度的数据，写入outChannel的start处
outChannel.transferFrom(inChannel, start, file.length());
start += file.length();
in.close();
inChannel.close();
out.close();
outChannel.close();
* 所有文件排序
* @param dirPath 文件根目录路径
* @return
public static List File getAllFileAndSort(String dirPath) {
File dirFile = new File(dirPath);
File[] listFiles = dirFile.listFiles();
List File list = Arrays.asList(listFiles);
Collections.sort(list, (o1, o2) - {
String _str=o1.getName().split("\\.")[0];
String _num=_str.split("_")[1];
String _str2=o2.getName().split("\\.")[0];
String _num2=_str2.split("_")[1];
return Integer.parseInt(_num) - Integer.parseInt(_num2);
return list;
* 删除文件夹
* 删除文件夹需要把包含的文件及文件夹先删除，才能成功
* https://blog.csdn.net/m0_57640408/article/details/120774050
* @param directory 文件夹名
* @return 删除成功返回true,失败返回false
public static boolean deleteDirectory(String directory) {
// directory不以文件分隔符（/或\）结尾时，自动添加文件分隔符，不同系统下File.separator方法会自动添加相应的分隔符
if (!directory.endsWith(File.separator)) {
directory = directory + File.separator;
File directoryFile = new File(directory);
// 判断directory对应的文件是否存在，或者是否是一个文件夹
if (!directoryFile.exists() !directoryFile.isDirectory()) {
System.out.println("文件夹删除失败，文件夹不存在" + directory);
return false;
boolean flag = true;
// 删除文件夹下的所有文件和文件夹
File[] files = directoryFile.listFiles();
for (int i = 0; i files.length; i++) { // 循环删除所有的子文件及子文件夹
// 删除子文件
if (files[i].isFile()) {
flag = deleteFile(files[i].getAbsolutePath());
if (!flag) {
break;
} else { // 删除子文件夹
flag = deleteDirectory(files[i].getAbsolutePath());
if (!flag) {
break;
if (!flag) {
System.out.println("删除失败");
return false;
// 最后删除当前文件夹
if (directoryFile.delete()) {
System.out.println("删除成功：" + directory);
return true;
} else {
System.out.println("删除失败：" + directory);
return false;
* 删除文件
* @param fileName 文件名
* @return 删除成功返回true,失败返回false
public static boolean deleteFile(String fileName) {
File file = new File(fileName);
if (file.isFile() file.exists()) {
file.delete();
System.out.println("删除文件成功：" + fileName);
return true;
} else {
System.out.println("删除文件失败：" + fileName);
return false;
}
分片上传文件接口
package com.youmejava.chun.commoninterface;
import com.youmejava.chun.util.FileUtil;
import com.youmejava.chun.util.ResultVo;
import com.youmejava.chun.util.StringUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.apache.shiro.authc.ExpiredCredentialsException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import javax.servlet.http.HttpServletRequest;
import java.io.*;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@RestController
@RequestMapping("/api/apiSystem/upload")
@Api(value = "文件上传", tags = "文件上传")
public class UploadController {
@Value("${filePath1}")
private String filePath;
@PostMapping("/register")
@ApiOperation(value = "文件注册", notes = "文件注册")
@ApiImplicitParams({@ApiImplicitParam(value = "哈希值", name = "hash", required = true, paramType = "body")})
public ResultVo register(@RequestBody Map String, Object map) {
System.out.println("hash: " + map.get("hash"));
if (!StringUtil.isNotBlankAndNull(map.get("hash").toString())) {
// return ResultVo.failure("哈希值不可为空");
throw new ExpiredCredentialsException("哈希值不可为空！");
String _filePath=filePath;
if (!_filePath.endsWith("/")) {
_filePath+="/";
// String _pathStr = "C:\\Users\\JH-rent\\Desktop\\java启动文件\\test" + "\\" + map.get("hash");
String _pathStr=_filePath+map.get("hash");
//创建不同的文件夹目录
File file = new File(_pathStr);
//判断文件夹是否存在
if (!file.exists()) {
//如果文件夹不存在，则创建新的的文件夹
file.mkdirs();
File f = new File(_pathStr);
// 检查目录是否已上传过文件，如果上传过，返回上传个数
if (f.isDirectory()) {
File dirFile = new File(_pathStr);
File[] listFiles = dirFile.listFiles();
List File list = Arrays.asList(listFiles);
if (list == null list.size() 0) {
Map String, Object map1=new HashMap ();
map1.put("number",list.size());
return ResultVo.success(map1);
@ApiOperation(value = "上传文件", notes = "上传文件")
@ApiImplicitParams({@ApiImplicitParam(value = "哈希值", name = "hash", required = true, paramType = "body"), @ApiImplicitParam(value = "文件流", name = "file", required = true, paramType = "body"), @ApiImplicitParam(value = "文件名称", name = "fileName", required = true, paramType = "body"),})
public ResultVo uploadFile(HttpServletRequest request) {
MultipartHttpServletRequest params = ((MultipartHttpServletRequest) request);
List MultipartFile files = ((MultipartHttpServletRequest) request).getFiles("file");
String _fileName = params.getParameter("fileName");
String _hash = params.getParameter("hash");
if (!StringUtil.isNotBlankAndNull(_hash)) {
throw new ExpiredCredentialsException("哈希值不可为空！");
if (!StringUtil.isNotBlankAndNull(_fileName)) {
throw new ExpiredCredentialsException("文件名称不可为空！");
// System.out.println("_fileName: " + _fileName);
// System.out.println("_hash: " + _hash);
// System.out.println("files: " + files);
// System.out.println(params.getParameter("file"));
// String _pathStr = "C:\\Users\\JH-rent\\Desktop\\java启动文件\\test" + "\\" + _hash + "\\";
String _filePath=filePath;
if (!_filePath.endsWith("/")) {
_filePath+="/";
String _pathStr =_filePath+_hash+"/";
FileOutputStream fileOut = null;
//写入到文件（注意文件保存路径的后面一定要加上文件的名称）
try {
fileOut = new FileOutputStream(_pathStr + _fileName);
BufferedOutputStream bos = new BufferedOutputStream(fileOut);
BufferedInputStream bis = null;
for (MultipartFile file : files) {
// file.transferTo(new File(_pathStr + file.getOriginalFilename()));
// System.out.println(file.getInputStream());
bis = new BufferedInputStream(file.getInputStream());
byte[] buf = new byte[4096];
int length = bis.read(buf);
//保存文件
while (length != -1) {
bos.write(buf, 0, length);
length = bis.read(buf);
bos.close();
bis.close();
return ResultVo.success();
} catch (Exception e) {
e.printStackTrace();
return ResultVo.failure(e.getMessage());
@GetMapping("/getMergeFile")
@ApiOperation(value = "获取合并文件", notes = "获取合并文件")
@ApiImplicitParams({@ApiImplicitParam(value = "哈希值", name = "hash", required = true, dataType = "String"), @ApiImplicitParam(value = "文件名称", name = "fileName", required = true, dataType = "String")})
public ResultVo getMergeFile(@RequestParam(value = "hash") String hash, @RequestParam(value = "fileName") String fileName) {
// String _pathStr = "C:\\Users\\JH-rent\\Desktop\\java启动文件\\test" + "\\" + hash + "\\";
// String _pathStr1 = "C:\\Users\\JH-rent\\Desktop\\java启动文件\\test";
String _filePath=filePath;
if (!_filePath.endsWith("/")) {
_filePath+="/";
String _pathStr = _filePath + hash + "/";
String _pathStr1 = _filePath;
try {
// if (!_pathStr1.endsWith("\\")) {
// _pathStr1 += "\\";
_pathStr1 += fileName;
FileUtil.mergeFile(_pathStr, _pathStr1);
//合并成功删除加密文件
FileUtil.deleteDirectory(_pathStr);
} catch (IOException e) {
e.printStackTrace();
Map String, Object map=new HashMap ();
map.put("fileUrl",_pathStr1);
return ResultVo.success(map);
}
前端分片链接：https:///wxchun/p/15892243.html
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