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package com.tiptimes.ctrl;
import org.springframework.core.io.Resource;
import org.springframework.core.io.UrlResource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.text.SimpleDateFormat;
import java.util.*;
@RestController
@RequestMapping("/files")
public class FileUploadController {
@RequestMapping("/upload")
public Object upload(@RequestParam("file") MultipartFile[] files) throws IOException {
Properties props = new Properties();
InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("file.properties");
props.load(inputStream);
String UPLOAD_PATH = props.getProperty("UPLOAD_PATH");
if (files == null || files.length == 0) {
return "请选择文件上传";
}
Map<String,String> fileUrls = new HashMap<>();
for (MultipartFile file : files) {
if (!file.isEmpty()) {
// 获取原始文件名
String originalFileName = file.getOriginalFilename();
// 生成时间戳
String timeStamp = new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date());
// 在文件名中加入时间戳，确保文件名唯一
String fileNameWithTimeStamp = timeStamp + "_" + originalFileName;
// 确保文件目录存在
File destDir = new File(UPLOAD_PATH);
if (!destDir.exists()) {
destDir.mkdirs();
}
// 文件上传后保存的路径
String destPath = UPLOAD_PATH + fileNameWithTimeStamp;
try {
// 保存文件
file.transferTo(new File(destPath));
// 添加上传文件的路径，并进行URL编码
fileUrls.put(fileNameWithTimeStamp,destPath);
} catch (IOException e) {
e.printStackTrace();
return "文件上传失败：" + e.getMessage();
}
}
}
return fileUrls;
}
@RequestMapping("/delete")
@ResponseBody
public boolean deleteFile(String fileName) throws IOException {
Properties props = new Properties();
InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("file.properties");
props.load(inputStream);
String UPLOAD_PATH = props.getProperty("UPLOAD_PATH");
String filePathToDelete = UPLOAD_PATH + fileName;
File fileToDelete = new File(filePathToDelete);
if (fileToDelete.exists()) {
try {
return fileToDelete.delete();
} catch (SecurityException e) {
e.printStackTrace();
return false;
}
} else {
return false;
}
}
@RequestMapping("/download")
@ResponseBody
public ResponseEntity<Resource> downloadFile(@RequestParam("fileName") String fileName) {
try {
Properties props = new Properties();
InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("file.properties");
props.load(inputStream);
String UPLOAD_PATH = props.getProperty("UPLOAD_PATH");
String newName = "";
int lastDotIndex = fileName.lastIndexOf(".");
if (lastDotIndex != -1 && lastDotIndex < fileName.length() - 1) {
newName = UUID.randomUUID() + fileName.substring(lastDotIndex);
}
Path filePath = Paths.get(UPLOAD_PATH).resolve(fileName);
Resource resource = new UrlResource(filePath.toUri());
if (resource.exists() && resource.isReadable()) {
HttpHeaders headers = new HttpHeaders();
headers.add(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + newName);
return ResponseEntity.ok()
.headers(headers)
.body(resource);
} else {
return null;
}
} catch (Exception e) {
return null;
}
}
}