Table of contents:
1. Required dependencies
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
2. File saving local directory tool class
package com.ruoyi.web.controller.util;
import org.springframework.web.multipart.MultipartFile;
import java.io.*;
import java.util.UUID;
public class MultipartFileToFileUtils {
/**
* @param file
* @param targetDirPath 存储MultipartFile文件的目标文件夹
* @return 文件的存储的绝对路径
*/
public static String saveMultipartFile(MultipartFile file, String targetDirPath) {
File toFile = null;
if (file.equals("") || file.getSize() <= 0) {
return null;
} else {
/*获取文件原名称*/
String originalFilename = file.getOriginalFilename();
/*获取文件格式*/
String fileFormat = originalFilename.substring(originalFilename.lastIndexOf("."));
String uuid = UUID.randomUUID().toString().trim().replaceAll("-", "");
toFile = new File(targetDirPath + File.separator + originalFilename);
String absolutePath = null;
try {
absolutePath = toFile.getCanonicalPath();
/*判断路径中的文件夹是否存在，如果不存在，先创建文件夹*/
String dirPath = absolutePath.substring(0, absolutePath.lastIndexOf(File.separator));
File dir = new File(dirPath);
if (!dir.exists()) {
dir.mkdirs();
}
InputStream ins = file.getInputStream();
inputStreamToFile(ins, toFile);
ins.close();
} catch (IOException e) {
e.printStackTrace();
}
return absolutePath;
}
}
//获取流文件
private static void inputStreamToFile(InputStream ins, File file) {
try {
OutputStream os = new FileOutputStream(file);
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {
os.write(buffer, 0, bytesRead);
}
os.close();
ins.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 删除本地临时文件
*
* @param file
*/
public static void deleteTempFile(File file) {
if (file != null) {
File del = new File(file.toURI());
del.delete();
}
}
}
3. Project actual combat
@ApiOperation("上传文件新版本")
@PostMapping("/v1/3rd/file/save")
public ResponseEntity<Object> saveFile(
@RequestHeader(name = "X-Weboffice-File-Id", defaultValue = "") String fileId,
@RequestHeader(name = "X-Weboffice-save-type", defaultValue = "auto") String type,
@RequestHeader(name = "x-wps-weboffice-token", required = false) String token,
@RequestParam MultipartFile file) {
设置初始文件id和版本号
//cache.put("a2c4d55e28af42a896386d5dcf36", new SoftReference<>(new CacheObject(1, 3600)));
// TODO 校验token，需要用户根据实际情况实现，此处仅供参考
if (StringUtils.isNotBlank(token)) {
//TODO 需要用户根据实际情况实现
}
// TODO 自定义校验规则，需要用户根据实际情况实现，此处仅供参考
if (StringUtils.isBlank(fileId)) {
return new ResponseEntity<>(new OnlineEditingCallbackApiController.ErrorInfo()
.setResult(20501001)
.setMessage("文件id不能为空"), HttpStatus.BAD_REQUEST);
}
String outpath = "";
String originalFilename = file.getOriginalFilename();
/*获取文件格式*/
String fileFormat = originalFilename.substring(originalFilename.lastIndexOf("."));
JinshanTable jinshanTable = new JinshanTable();
jinshanTable.setFileId(fileId);
List<JinshanTable> list = jinshanTableService.selectJinshanTableList(jinshanTable);
long version = list.get(0).getVersion() + 1;
if (CollectionUtils.isEmpty(list)) {
String path = "D:\\downloadServer\\" + fileId + "\\version1\\";
outpath = "D:/downloadServer/" + fileId + "/version1/" + originalFilename;
File file1 = new File(path);
boolean mkdir = file1.mkdir();
} else {
String path = "D:\\downloadServer\\" + list.get(0).getFileId() + "\\version" + version + "\\";
outpath = "D:/downloadServer/" + fileId + "/version" + version;
File file1 = new File(path);
boolean mkdir = file1.mkdir();
}
MultipartFileToFileUtils.saveMultipartFile(file, outpath);
//保存数据库
long time = new Date().getTime() / 1000;
JinshanTable jinshanTable1 = new JinshanTable();
jinshanTable1.setFileId(fileId);
jinshanTable1.setVersion(version);
jinshanTable1.setFileName(originalFilename);
jinshanTable1.setCreateTime(time);
jinshanTable1.setCreator("idc" + fileId);
jinshanTable1.setDownloadUrl("http://xxxx:8100/" + fileId + "/version" + version + "/" + file.getOriginalFilename() + fileFormat);
jinshanTable1.setSize(file.getSize());
jinshanTable1.setPreviewPages(list.get(0).getPreviewPages());
jinshanTable1.setModifier("idm" + fileId);
jinshanTable1.setMofifyTime(time);
jinshanTableService.insertJinshanTable(jinshanTable1);
// TODO 组装文件信息，需要用户根据实际情况实现，此处仅供参考
FileInfoBuilderSave fileInfo = new FileInfoBuilderSave()
.setFile(new FileInfoBuilderSave.FileInfo()
.setId(fileId)
.setName(originalFilename)
.setVersion(Math.toIntExact(list.get(0).getVersion() + 1))
.setSize(Math.toIntExact(file.getSize()))
.setDownloadUrl("http://xxxx:8100/" + fileId + "/version" + version + "/" + file.getOriginalFilename())
);
logger.info("param = {}", "上传文件新版本");
return new ResponseEntity<>(fileInfo, HttpStatus.OK);
}
4. Results
At this point, file storage and version management services are completed.