QCloudGetFilePreviewRequest Class Reference

Inherits from	QCloudBizHTTPRequest
Declared in	QCloudGetFilePreviewRequest.h QCloudGetFilePreviewRequest.m

Overview

COS 文档预览方法.

功能描述

文档预览功能支持对多种文件类型生成图片格式预览，可以解决文档内容的页面展示问题，满足 PC、App 等多个用户端的文档在线浏览需求，适用于在线教育、企业 OA、网站转码等业务场景。

示例

@code

QCloudGetFilePreviewRequest *request = [[QCloudGetFilePreviewRequest alloc]init];
request.bucket = @"桶名称";
request.object = 文件名;
request.page = 页码;
request.regionName = 桶所属区域;
[request setFinishBlock:^(NSDictionary * _Nullable result, NSError * _Nullable error) {
    返回一个字典 包含总页数，文件data
}];
[[QCloudCOSXMLService defaultCOSXML] GetFilePreviewObject:request];

`responseContentType`

设置响应头部中的 Content-Type参数

@property (strong, nonatomic) NSString *responseContentType

Declared In

QCloudGetFilePreviewRequest.h

`responseContentLanguage`

设置响应头部中的Content-Language参数

@property (strong, nonatomic) NSString *responseContentLanguage

Declared In

QCloudGetFilePreviewRequest.h

`responseContentExpires`

设置响应头部中的Content-Expires参数

@property (strong, nonatomic) NSString *responseContentExpires

Declared In

QCloudGetFilePreviewRequest.h

`responseCacheControl`

设置响应头部中的Cache-Control参数

@property (strong, nonatomic) NSString *responseCacheControl

Declared In

QCloudGetFilePreviewRequest.h

`responseContentDisposition`

设置响应头部中的 Content-Disposition 参数。

@property (strong, nonatomic) NSString *responseContentDisposition

Declared In

QCloudGetFilePreviewRequest.h

`responseContentEncoding`

设置响应头部中的 Content-Encoding 参数。

@property (strong, nonatomic) NSString *responseContentEncoding

Declared In

QCloudGetFilePreviewRequest.h

`range`

RFC 2616 中定义的指定文件下载范围，以字节（bytes）为单位

@property (strong, nonatomic) NSString *range

Declared In

QCloudGetFilePreviewRequest.h

`ifModifiedSince`

如果文件修改时间晚于指定时间，才返回文件内容。否则返回 412 (not modified)

@property (strong, nonatomic) NSString *ifModifiedSince

Declared In

QCloudGetFilePreviewRequest.h

`ifUnmodifiedModifiedSince`

如果文件修改时间早于或等于指定时间，才返回文件内容。否则返回 412 (precondition failed)

@property (strong, nonatomic) NSString *ifUnmodifiedModifiedSince

Declared In

QCloudGetFilePreviewRequest.h

`ifMatch`

当 ETag 与指定的内容一致，才返回文件。否则返回 412 (precondition failed)

@property (strong, nonatomic) NSString *ifMatch

Declared In

QCloudGetFilePreviewRequest.h

`ifNoneMatch`

当 ETag 与指定的内容不一致，才返回文件。否则返回 304 (not modified)

@property (strong, nonatomic) NSString *ifNoneMatch

Declared In

QCloudGetFilePreviewRequest.h

`versionID`

指定 Object 的 VersionID (在开启多版本的情况下)

@property (strong, nonatomic) NSString *versionID

Declared In

QCloudGetFilePreviewRequest.h

`object`

对象名

@property (strong, nonatomic) NSString *object

Declared In

QCloudGetFilePreviewRequest.h

`bucket`

存储桶名

@property (strong, nonatomic) NSString *bucket

Declared In

QCloudGetFilePreviewRequest.h

`srcType`

源数据的后缀类型，当前文档转换根据 COS 对象的后缀名来确定源数据类型。当 COS 对象没有后缀名时，可以设置该值

@property (copy, nonatomic) NSString *srcType

Declared In

QCloudGetFilePreviewRequest.h

`page`

需转换的文档页码，从1开始计数

@property (assign, nonatomic) NSInteger page

Declared In

QCloudGetFilePreviewRequest.h

`– setFinishBlock:`

返回图片回调

- (void)setFinishBlock:(void ( ^ _Nullable ) ( QCloudGetFilePreviewResult *_Nullable result , NSError *_Nullable error ))QCloudRequestFinishBlock

Parameters

`QCloudRequestFinishBlock`	返回图片回调

Declared In

QCloudGetFilePreviewRequest.h