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znpt-backend
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8/7,ybb文件夹和文件都实现了记录Id功能。

This commit is contained in:
ybb 2025-08-07 16:06:15 +08:00
parent 50659ef1a7
commit e356368b62
8 changed files with 271 additions and 10 deletions
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7
core/pom.xml
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@ -161,6 +161,13 @@
<artifactId>opencv</artifactId>
<version>4.7.0-0</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.11.0</version>
</dependency>
</dependencies>
<build>

2
core/src/main/java/com/dite/znpt/domain/entity/BusinessDataFileEntity.java
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@ -33,5 +33,7 @@ public class BusinessDataFileEntity {
private String uploaderId = null;
//是否删除
private Boolean isDeleted = false;
// //有效日期
// private Date validDate = null;
}

4
core/src/main/java/com/dite/znpt/mapper/BusinessDataFileMapper.java
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@ -11,6 +11,10 @@ import java.util.List;
@ApiOperation("商务资料文件对象")
public interface BusinessDataFileMapper {
// 新增文件预览方法
public List<BusinessDataFileEntity> List(@Param("folderId") Long folderId, @Param("fileName") String fileName);
void delete(@Param("fileId") Long fileId,@Param("folderId") Long folderId);

5
core/src/main/java/com/dite/znpt/mapper/BusinessDataMapper.java
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@ -4,9 +4,9 @@ import com.baomidou.mybatisplus.core.injector.methods.SelectList;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.dite.znpt.domain.entity.BusinessDataEntity;
import io.swagger.annotations.ApiOperation;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import com.dite.znpt.domain.entity.BusinessDataEntity;
import java.time.LocalDateTime;
import java.util.List;
@ -16,7 +16,8 @@ import java.util.List;
@ApiOperation("商务资料文件夹对象")
public interface BusinessDataMapper {
@Mapper
public interface BusinessDataMapper {
public String getPath(Long parentId);
public List<BusinessDataEntity> List();

4
core/src/main/java/com/dite/znpt/service/BusinessDataFileService.java
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@ -36,6 +36,6 @@ public interface BusinessDataFileService {
@ApiOperation("上传文件")
Result addfile(MultipartFile file, Long folderId);
// 在接口中添加预览方法
// Result preview(Long fileId, HttpServletResponse response);
@ApiOperation("预览文件")
Result preview(Long fileId, HttpServletResponse response);
}

246
core/src/main/java/com/dite/znpt/service/impl/BusinessDataFileServiceImpl.java
View File

@ -1,7 +1,22 @@
package com.dite.znpt.service.impl;
import javax.servlet.http.HttpServletResponse;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.springframework.util.MimeTypeUtils;
import org.springframework.http.MediaType;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import java.util.Base64;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;
//
import cn.dev33.satoken.stp.StpUtil;
import com.dite.znpt.domain.Result;
import com.dite.znpt.domain.entity.BusinessDataFileEntity;
@ -82,8 +97,6 @@ public class BusinessDataFileServiceImpl implements BusinessDataFileService {
return Result.okM("删除成功");
}
}
}
@ApiOperation("增加文件")
@ -239,4 +252,231 @@ public class BusinessDataFileServiceImpl implements BusinessDataFileService {
return Result.error("上传失败");
}
}
@ApiOperation("文件预览")
public Result preview(Long fileId, HttpServletResponse response) {
try {
// 获取文件路径
String filePath = businessDataFileMapper.getPath(fileId);
if (filePath == null || filePath.isEmpty()) {
return Result.error("文件不存在");
}
File file = new File(filePath);
if (!file.exists()) {
return Result.error("文件不存在");
}
// 获取文件扩展名
String extension = getFileExtension(filePath);
// 根据文件类型处理预览
switch (extension) {
case "pdf":
return previewPdf(file, response);
case "jpg":
case "jpeg":
case "png":
case "gif":
case "bmp":
case "webp":
return previewImage(file, response);
case "txt":
case "md":
case "log":
return previewText(file, response);
case "doc":
case "docx":
case "xls":
case "xlsx":
case "ppt":
case "pptx":
return previewOffice(file, response);
case "mp4":
case "avi":
case "mov":
case "wmv":
case "flv":
return previewVideo(file, response);
case "mp3":
case "wav":
case "flac":
case "aac":
return previewAudio(file, response);
default:
return Result.error("暂不支持该文件类型的预览");
}
} catch (Exception e) {
return Result.error("文件预览失败: " + e.getMessage());
}
}
private String getFileExtension(String fileName) {
if (fileName == null || fileName.isEmpty()) {
return "";
}
int lastDotIndex = fileName.lastIndexOf('.');
if (lastDotIndex == -1) {
return "";
}
return fileName.substring(lastDotIndex + 1).toLowerCase();
}
private Result previewPdf(File file, HttpServletResponse response) {
try {
response.setContentType("application/pdf");
response.setHeader("Content-Disposition", "inline; filename=" + file.getName());
try (FileInputStream fis = new FileInputStream(file);
OutputStream os = response.getOutputStream()) {
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = fis.read(buffer)) != -1) {
os.write(buffer, 0, bytesRead);
}
}
return Result.ok("PDF预览成功");
} catch (Exception e) {
return Result.error("PDF预览失败: " + e.getMessage());
}
}
private Result previewImage(File file, HttpServletResponse response) {
try {
String contentType = getImageContentType(file.getName());
response.setContentType(contentType);
response.setHeader("Content-Disposition", "inline; filename=" + file.getName());
try (FileInputStream fis = new FileInputStream(file);
OutputStream os = response.getOutputStream()) {
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = fis.read(buffer)) != -1) {
os.write(buffer, 0, bytesRead);
}
}
return Result.ok("图片预览成功");
} catch (Exception e) {
return Result.error("图片预览失败: " + e.getMessage());
}
}
private Result previewText(File file, HttpServletResponse response) {
try {
response.setContentType("text/plain; charset=UTF-8");
response.setHeader("Content-Disposition", "inline; filename=" + file.getName());
try (FileInputStream fis = new FileInputStream(file);
OutputStream os = response.getOutputStream()) {
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = fis.read(buffer)) != -1) {
os.write(buffer, 0, bytesRead);
}
}
return Result.ok("文本预览成功");
} catch (Exception e) {
return Result.error("文本预览失败: " + e.getMessage());
}
}
private Result previewOffice(File file, HttpServletResponse response) {
// Office文件预览比较复杂，这里返回提示信息
return Result.error("Office文件预览功能暂未实现，请下载后查看");
}
private Result previewVideo(File file, HttpServletResponse response) {
try {
String contentType = getVideoContentType(file.getName());
response.setContentType(contentType);
response.setHeader("Content-Disposition", "inline; filename=" + file.getName());
try (FileInputStream fis = new FileInputStream(file);
OutputStream os = response.getOutputStream()) {
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = fis.read(buffer)) != -1) {
os.write(buffer, 0, bytesRead);
}
}
return Result.ok("视频预览成功");
} catch (Exception e) {
return Result.error("视频预览失败: " + e.getMessage());
}
}
private Result previewAudio(File file, HttpServletResponse response) {
try {
String contentType = getAudioContentType(file.getName());
response.setContentType(contentType);
response.setHeader("Content-Disposition", "inline; filename=" + file.getName());
try (FileInputStream fis = new FileInputStream(file);
OutputStream os = response.getOutputStream()) {
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = fis.read(buffer)) != -1) {
os.write(buffer, 0, bytesRead);
}
}
return Result.ok("音频预览成功");
} catch (Exception e) {
return Result.error("音频预览失败: " + e.getMessage());
}
}
private String getImageContentType(String fileName) {
String extension = getFileExtension(fileName);
switch (extension) {
case "jpg":
case "jpeg":
return "image/jpeg";
case "png":
return "image/png";
case "gif":
return "image/gif";
case "bmp":
return "image/bmp";
case "webp":
return "image/webp";
default:
return "application/octet-stream";
}
}
private String getVideoContentType(String fileName) {
String extension = getFileExtension(fileName);
switch (extension) {
case "mp4":
return "video/mp4";
case "avi":
return "video/x-msvideo";
case "mov":
return "video/quicktime";
case "wmv":
return "video/x-ms-wmv";
case "flv":
return "video/x-flv";
default:
return "application/octet-stream";
}
}
private String getAudioContentType(String fileName) {
String extension = getFileExtension(fileName);
switch (extension) {
case "mp3":
return "audio/mpeg";
case "wav":
return "audio/wav";
case "flac":
return "audio/flac";
case "aac":
return "audio/aac";
default:
return "application/octet-stream";
}
}
}

7
web/src/main/java/com/dite/znpt/web/controller/BusinessDataFileController.java
View File

@ -27,6 +27,7 @@ import org.springframework.web.multipart.MultipartFile;
/*
* @Description: 商务资料管理，文件夹层
* 袁彬彬写的，其他人合并的时候，不允许改我的部分。
*/
@Api(tags = "文件接口")
@ -78,4 +79,10 @@ public class BusinessDataFileController {
return businessDataFileService.reName(fileId, newFileName);
}
@ApiOperation(value = "文件预览")
@GetMapping("/preview")
public Result preview(@RequestParam("fileId") Long fileId, HttpServletResponse response) {
return businessDataFileService.preview(fileId, response);
}
}

4
web/src/main/resources/application.yml
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@ -10,9 +10,9 @@ spring:
servlet:
multipart:
# 单个文件大小
max-file-size: 100MB
max-file-size: 1000MB
# 设置总上传的文件大小
max-request-size: 200MB
max-request-size: 2000MB
application:
name: znpt
mvc: