package cn.iocoder.yudao.module.system.controller.admin.storage;
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import cn.iocoder.yudao.framework.common.pojo.CommonResult;
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import cn.iocoder.yudao.module.system.controller.admin.storage.vo.SystemStorageBlobRespVO;
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import cn.iocoder.yudao.module.system.dal.dataobject.storage.SystemStorageBlobDO;
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import cn.iocoder.yudao.module.system.service.storage.SystemStorageBlobService;
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import cn.iocoder.yudao.module.system.util.storage.StorageFileUtil;
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import io.swagger.v3.oas.annotations.Operation;
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import io.swagger.v3.oas.annotations.Parameter;
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import io.swagger.v3.oas.annotations.tags.Tag;
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import jakarta.annotation.Resource;
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import jakarta.servlet.http.HttpServletResponse;
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import jakarta.annotation.security.PermitAll;
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import lombok.AllArgsConstructor;
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import org.springframework.core.io.FileSystemResource;
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import org.springframework.http.ContentDisposition;
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import org.springframework.http.MediaType;
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import org.springframework.http.ResponseEntity;
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import org.springframework.validation.annotation.Validated;
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import org.springframework.web.bind.annotation.*;
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import org.springframework.web.multipart.MultipartFile;
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import java.io.File;
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import java.io.IOException;
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import java.net.URLEncoder;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Files;
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import java.util.List;
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import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
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/**
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* 管理后台 - 文件上传/预览/下载
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*
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* @author 芋道源码
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*/
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@Tag(name = "管理后台 - 文件上传")
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@RestController
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@RequestMapping("/system/storage-blob")
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@Validated
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public class SystemStorageBlobController {
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@Resource
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private SystemStorageBlobService storageBlobService;
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@Resource
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private StorageFileUtil fileUtil;
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@PostMapping("/upload")
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@Operation(summary = "文件上传")
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public CommonResult<List<SystemStorageBlobRespVO>> uploadFile(
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@RequestParam("files") List<MultipartFile> files) {
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return success(storageBlobService.upload(files, false));
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}
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@PostMapping("/public-upload")
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@Operation(summary = "公共文件上传（永久有效，慎用）")
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public CommonResult<List<SystemStorageBlobRespVO>> publicUploadFile(
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@RequestParam("files") List<MultipartFile> files) {
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return success(storageBlobService.upload(files, true));
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}
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@GetMapping("/preview/{fileName}")
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@Operation(summary = "文件预览")
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@PermitAll
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public ResponseEntity<FileSystemResource> preview(
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@PathVariable String fileName,
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@RequestParam(value = "token", required = false) String token,
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@RequestParam(value = "publicKey", required = false) String publicKey) throws Exception {
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File file;
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if (publicKey != null) {
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file = fileUtil.compressFile(storageBlobService.getPublicFile(fileName, publicKey));
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} else {
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file = fileUtil.compressFile(storageBlobService.getFileByToken(fileName, token));
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}
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String contentType = Files.probeContentType(file.toPath());
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ContentDisposition contentDisposition = ContentDisposition.inline()
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.filename(fileName, StandardCharsets.UTF_8)
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.build();
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return ResponseEntity.ok()
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.contentType(MediaType.parseMediaType(contentType != null ? contentType : "application/octet-stream"))
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.contentLength(file.length())
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.header("Content-Disposition", contentDisposition.toString())
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.body(new FileSystemResource(file));
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}
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@GetMapping("/download/{fileName}")
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@Operation(summary = "文件下载")
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@PermitAll
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public void download(
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@PathVariable String fileName,
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@RequestParam(value = "token", required = false) String token,
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@RequestParam(value = "publicKey", required = false) String publicKey,
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HttpServletResponse response) throws Exception {
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File file;
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if (publicKey != null) {
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file = fileUtil.compressFile(storageBlobService.getPublicFile(fileName, publicKey));
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} else {
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file = fileUtil.compressFile(storageBlobService.getFileByToken(fileName, token));
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}
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String originalFileName = storageBlobService.getDownloadFileName(fileName);
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String encodedFileName = URLEncoder.encode(originalFileName, StandardCharsets.UTF_8.name()).replace("+", "%20");
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response.setHeader("Content-Disposition", "attachment;filename*=UTF-8''" + encodedFileName);
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response.setContentLengthLong(file.length());
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Files.copy(file.toPath(), response.getOutputStream());
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}
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}
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