2025.1.3 项目信息 新增模态框优化

询价 询价审批 下载文件优化

src/main/java/com/xujie/sys/modules/oss/controller/OssController.java

@@ -41,4 +41,9 @@ public class OssController {
     public void previewOssFileById(@PathVariable("id") Integer id, HttpServletResponse response) throws Exception {
         sysOssService.previewOssFileById(id,response);
     }
+
+    @PostMapping("/2/{id}")
+    public void previewOssFileById2(@PathVariable("id") Integer id, HttpServletResponse response) throws Exception {
+        sysOssService.previewOssFileById2(id,response);
+    }
 }

src/main/java/com/xujie/sys/modules/oss/service/SysOssService.java

@@ -53,4 +53,7 @@ public interface SysOssService extends IService<SysOssEntity> {
 	List<SysOssEntity> queryOssFile(SysOssEntity oss);
 
 	void previewOssFileById(Integer id, HttpServletResponse response) throws Exception;
+
+	void previewOssFileById2(Integer id, HttpServletResponse response) throws Exception;
+
 }

src/main/java/com/xujie/sys/modules/oss/service/impl/SysOssServiceImpl.java

@@ -153,7 +153,53 @@ public class SysOssServiceImpl extends ServiceImpl<SysOssDao, SysOssEntity> impl
 	}
 
 	@Override
-	public void previewOssFileById(Integer id, HttpServletResponse response) throws Exception {
+	public void previewOssFileById(Integer id, HttpServletResponse response) {
+		SysOssEntity oss = this.getById(id);
+		if (Objects.isNull(oss)) {
+			throw new IllegalArgumentException("文件不存在");
+		}
+
+		// 创建文件对象
+		File file = new File(oss.getUrl());
+		if (!file.exists()) {
+			throw new IllegalArgumentException("文件不存在");
+		}
+
+		String encodedFileName;
+		try {
+			encodedFileName = URLEncoder.encode(oss.getFileName(), "UTF-8");
+		} catch (UnsupportedEncodingException e) {
+			throw new RuntimeException("文件名编码失败", e);
+		}
+
+		// 设置响应头
+		if ("txt".equals(oss.getFileSuffix())){
+			response.setContentType("text/plain;charset=utf-8");
+		}else {
+			response.setContentType("application/octet-stream;charset=utf-8");
+		}
+		response.setHeader("Content-Disposition", "attachment; filename=" + encodedFileName);
+
+		try (FileInputStream fis = new FileInputStream(file);
+			 BufferedInputStream bis = new BufferedInputStream(fis);
+			 ServletOutputStream os = response.getOutputStream()) {
+
+			byte[] buffer = new byte[1024];
+			int bytesRead;
+
+			// 循环读取文件内容并写入到响应流中
+			while ((bytesRead = bis.read(buffer)) != -1) {
+				os.write(buffer, 0, bytesRead);
+			}
+
+		} catch (IOException e) {
+			throw new RuntimeException("文件下载失败", e);
+		}
+
+	}
+
+	@Override
+	public void previewOssFileById2(Integer id, HttpServletResponse response) throws Exception {
 		SysOssEntity oss = this.getById(id);
 		if (Objects.isNull(oss)) {
 			throw new IllegalArgumentException("文件不存在");