文件删除原创

# 后端

# CosManager.java

 /**
     *删除对象
     *
     * @param key 唯一键
     */
    public void deleteObjects(String key) {
       // 调用 COS 接口之前必须保证本进程存在一个 COSClient 实例，如果没有则创建
       COSClient cosClient = createCOSClient();
      
      //删除文件
       DeleteObjectRequest deleteObjectRequest = new DeleteObjectRequest(bucket,key);
       cosClient.deleteObject(deleteObjectRequest);
      
        // 确认本进程不再使用 cosClient 实例之后，关闭即可
       cosClient.shutdown();
    }

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# CosController.java

 /**
     * 文件删除
     *
     * @param uploadFileRequest 对象在cos中的url
     * @return 用户id
     */
    @Operation(summary = "文件删除")
    @PostMapping("/delete")
    public BaseResponse deleteCos(@RequestBody UploadFileRequest uploadFileRequest, HttpServletRequest request) {
        userService.getLoginUser(request);
        String filepath = uploadFileRequest.getFilepath();
        String key = filepath.replace(HOST, "");
        try {

            boolean objectExists = cosClient.doesObjectExist(cosClientConfig.getBucket(), key);
            if (!objectExists) {
                // 如果对象不存在，返回相应的响应
                throw new BusinessException(ErrorCode.NOT_FOUND_ERROR, "对象不存在");
            }
            // 尝试删除对象
            cosManager.deleteObjects(key);

            // 如果删除成功，返回成功响应
            return ResultUtils.success(key);

        } catch (Exception e) {
            // 捕获并处理异常
            log.error("file delete error, key = {}", key);

            // 返回包含错误信息的响应
            return ResultUtils.error(ErrorCode.SYSTEM_ERROR,"删除文件时发生异常: " + e.getMessage());
        }
    }

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# 前端

基于vue3 + ts + elementplus

# 接口

  /**
     * 文件删除
     * @param requestBody 
     * @returns BaseResponse OK
     * @throws ApiError
     */
    public static deleteCos(
requestBody: UploadFileRequest,
): CancelablePromise<BaseResponse> {
        return __request(OpenAPI, {
            method: 'POST',
            url: '/cos/delete',
            body: requestBody,
            mediaType: 'application/json',
        });
    }

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# 使用

html

	<el-button type="primary" @click="deleteFile">删除</el-button>

function deleteUser({ $index, row }) {
  return new Promise((resolve, reject) => {
	UserControllerService.deleteCos({filepath: row.key}).then(res => {
	  tableData.value.splice($index, 1)
	  ElMessage({
      message: '删除成功',
      type: 'success',
      duration: 5 * 1000
	  })
	  getUser()
	  resolve(res.data)
	}).catch((error) => {
	  reject(error);
	})
  })
}

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#后端 #COS

上次更新: 2024/01/11 18:04:10

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