文件上传

ruoyi-modules/ruoyi-student/pom.xml

@@ -33,6 +33,10 @@
             <groupId>org.dromara</groupId>
             <artifactId>ruoyi-common-log</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.dromara</groupId>
+            <artifactId>ruoyi-system</artifactId>
+        </dependency>
     </dependencies>
 
 </project>

ruoyi-modules/ruoyi-student/src/main/java/org/dromara/controller/FileController.java

@@ -0,0 +1,81 @@
+package org.dromara.controller;
+
+import cn.hutool.core.io.FileUtil;
+import jakarta.annotation.Resource;
+import jakarta.servlet.http.HttpServletResponse;
+import org.dromara.common.Result;
+import org.dromara.common.core.exception.file.FileException;
+import org.dromara.system.service.ISysOssService;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * 文件相关的接口
+ */
+@RestController
+@RequestMapping("/files")
+public class FileController {
+    //  System.getProperty("user.dir")  获取到你当前项目的根路径
+    private static final String filePath = System.getProperty("user.dir")+"/files/";
+    @Resource
+    private ISysOssService sysOssService;
+
+
+    @PostMapping("/upload")
+    public Result upload(MultipartFile file){   //文件流的形式接收前端发送过来的文件
+//        String originalFilename = file.getOriginalFilename();  //  xxx.png
+//        if(!FileUtil.isDirectory(filePath)){  // 如果目录不存在，需要先创建目录
+//            FileUtil.mkdir(filePath);//创建一个files 目录
+//        }
+//        // 提供文件存储的完整的路径
+//         //  给文件名加一个唯一的标识
+//        String fileName = System.currentTimeMillis()+ "_"+ originalFilename;
+//        String realPath = filePath + fileName;   //  完整的文件路径
+//        try {
+//            FileUtil.writeBytes(file.getBytes(),realPath);
+//        } catch (IOException e) {
+//            e.printStackTrace();
+//            throw new FileException("500",new String[]{"文件上传失败"});
+//        }
+//
+//        // 返回一个网络链接
+//        // http://localhost:9090/files/download/xxxx.jpg
+//        String url = "http://localhost:8888/files/" + fileName;
+//        return Result.success(url);
+        return Result.success(sysOssService.upload(file));
+    }
+
+
+    /**
+     * 文件下载
+     *
+     * @param fileName
+     * @param response
+     * @return
+     */
+    @GetMapping("/download/{fileName}")
+    public Result download(@PathVariable String fileName , HttpServletResponse response){
+
+        try {
+            response.addHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, StandardCharsets.UTF_8));
+            response.setContentType("application/octet-stream");
+            OutputStream os = response.getOutputStream();
+            String realPath = filePath + fileName;   //  完整的文件路径
+            // 获取到文件的字节流数组
+            byte[] bytes = FileUtil.readBytes(realPath);
+            os.write(bytes);
+            os.flush();
+            os.close();
+        } catch (IOException e) {
+            e.printStackTrace();
+            throw new FileException("500",new String[]{"文件下载失败"});
+        }
+        String url = "http://localhost:90/files/download/" + fileName;
+        return Result.success(url);
+    }
+}