腾讯云对象存储上传对象

简介

本文档提供关于对象的高级上传、简单上传、分块上传等操作相关的 API 概览以及 SDK 示例代码。简单操作

分块操作

高级接口（推荐）

上传对象（断点续传）

功能说明

上传接口根据用户文件的长度，自动切分数据， 降低用户的使用门槛，用户无需关心分块上传的每个步骤， 且可以对分块上传未完成的文件会进行断点续传，分块大小默认 1048576（1MB），可通过 part_size 参数调整。

方法原型

cos_status_t *cos_resumable_upload_file(cos_request_options_t *options,                                          cos_string_t *bucket,                                          cos_string_t *object,                                          cos_string_t *filepath,                                          cos_table_t *headers,                                          cos_table_t *params,                                          cos_resumable_clt_params_t *clt_params,                                          cos_progress_callback progress_callback,                                          cos_table_t **resp_headers,                                          cos_list_t *resp_body)

参数说明

返回结果说明

示例

#include "cos_http_io.h"#include "cos_api.h"#include "cos_log.h"
// endpoint 是 COS 访问域名信息，详情请参见 https://cloud.tencent.com/document/product/436/6224 文档static char TEST_COS_ENDPOINT[] = "cos.ap-guangzhou.myqcloud.com";// 开发者拥有的项目身份ID/密钥，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char *TEST_ACCESS_KEY_ID;                //your secret_idstatic char *TEST_ACCESS_KEY_SECRET;            //your secret_key// 开发者访问 COS 服务时拥有的用户维度唯一资源标识，用以标识资源，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char TEST_APPID[] = "";    //your appid//the cos bucket name, syntax: [bucket]-[appid], for example: mybucket-1253666666，可在 https://console.cloud.tencent.com/cos5/bucket 查看static char TEST_BUCKET_NAME[] = "";static char TEST_MULTIPART_FILE[] = "test.zip";static char TEST_MULTIPART_OBJECT4[] = "multipart4.dat";
void log_status(cos_status_t *s){    cos_warn_log("status->code: %d", s->code);    if (s->error_code) cos_warn_log("status->error_code: %s", s->error_code);    if (s->error_msg) cos_warn_log("status->error_msg: %s", s->error_msg);    if (s->req_id) cos_warn_log("status->req_id: %s", s->req_id);}
void init_test_config(cos_config_t *config, int is_cname){    cos_str_set(&config->endpoint, TEST_COS_ENDPOINT);    cos_str_set(&config->access_key_id, TEST_ACCESS_KEY_ID);    cos_str_set(&config->access_key_secret, TEST_ACCESS_KEY_SECRET);    cos_str_set(&config->appid, TEST_APPID);    config->is_cname = is_cname;}
void init_test_request_options(cos_request_options_t *options, int is_cname){    options->config = cos_config_create(options->pool);    init_test_config(options->config, is_cname);    options->ctl = cos_http_controller_create(options->pool, 0);}
void test_resumable_upload_with_multi_threads(){    cos_pool_t *p = NULL;    cos_string_t bucket;    cos_string_t object;    cos_string_t filename;    cos_status_t *s = NULL;    int is_cname = 0;    cos_table_t *headers = NULL;    cos_table_t *resp_headers = NULL;    cos_request_options_t *options = NULL;    cos_resumable_clt_params_t *clt_params;
    cos_pool_create(&p, NULL);    options = cos_request_options_create(p);    init_test_request_options(options, is_cname);    headers = cos_table_make(p, 0);    cos_str_set(&bucket, TEST_BUCKET_NAME);    cos_str_set(&object, TEST_MULTIPART_OBJECT4);    cos_str_set(&filename, TEST_MULTIPART_FILE);
    // upload    clt_params = cos_create_resumable_clt_params_content(p, 1024 * 1024, 8, COS_FALSE, NULL);    s = cos_resumable_upload_file(options, &bucket, &object, &filename, headers, NULL,         clt_params, NULL, &resp_headers, NULL);
    if (cos_status_is_ok(s)) {        printf("upload succeeded\n");    } else {        printf("upload failed\n");    }
    cos_pool_destroy(p);}
int main(int argc, char *argv[]){    // 通过环境变量获取 SECRETID 和 SECRETKEY    TEST_ACCESS_KEY_ID     = getenv("COS_SECRETID");    TEST_ACCESS_KEY_SECRET = getenv("COS_SECRETKEY");
    if (cos_http_io_initialize(NULL, 0) != COSE_OK) {       exit(1);    }
    //set log level, default COS_LOG_WARN    cos_log_set_level(COS_LOG_WARN);
    //set log output, default stderr    cos_log_set_output(NULL);
    test_resumable_upload_with_multi_threads();
    cos_http_io_deinitialize();
    return 0;}

简单操作

简单上传对象（创建文件夹）

功能说明

上传一个对象至存储桶，最大支持上传不超过5GB的对象，5GB以上对象请使用 分块上传 或 高级接口 上传。

方法原型

cos_status_t *cos_put_object_from_file(const cos_request_options_t *options,                                       const cos_string_t *bucket,                                        const cos_string_t *object,                                        const cos_string_t *filename,                                       cos_table_t *headers,                                        cos_table_t **resp_headers);

参数说明

返回结果说明

示例1：上传对象

#include "cos_http_io.h"#include "cos_api.h"#include "cos_log.h"
// endpoint 是 COS 访问域名信息，详情请参见 https://cloud.tencent.com/document/product/436/6224 文档static char TEST_COS_ENDPOINT[] = "cos.ap-guangzhou.myqcloud.com";// 开发者拥有的项目身份ID/密钥，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char *TEST_ACCESS_KEY_ID;                //your secret_idstatic char *TEST_ACCESS_KEY_SECRET;            //your secret_key// 开发者访问 COS 服务时拥有的用户维度唯一资源标识，用以标识资源，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char TEST_APPID[] = "";    //your appid//the cos bucket name, syntax: [bucket]-[appid], for example: mybucket-1253666666，可在 https://console.cloud.tencent.com/cos5/bucket 查看static char TEST_BUCKET_NAME[] = "";// 对象键，对象（Object）在存储桶（Bucket）中的唯一标识。有关对象与对象键的进一步说明，请参见 https://cloud.tencent.com/document/product/436/13324 文档static char TEST_OBJECT_NAME1[] = "1.txt";
void log_status(cos_status_t *s){    cos_warn_log("status->code: %d", s->code);    if (s->error_code) cos_warn_log("status->error_code: %s", s->error_code);    if (s->error_msg) cos_warn_log("status->error_msg: %s", s->error_msg);    if (s->req_id) cos_warn_log("status->req_id: %s", s->req_id);}
void init_test_config(cos_config_t *config, int is_cname){    cos_str_set(&config->endpoint, TEST_COS_ENDPOINT);    cos_str_set(&config->access_key_id, TEST_ACCESS_KEY_ID);    cos_str_set(&config->access_key_secret, TEST_ACCESS_KEY_SECRET);    cos_str_set(&config->appid, TEST_APPID);    config->is_cname = is_cname;}
void init_test_request_options(cos_request_options_t *options, int is_cname){    options->config = cos_config_create(options->pool);    init_test_config(options->config, is_cname);    options->ctl = cos_http_controller_create(options->pool, 0);}
void test_put_object_from_file(){    cos_pool_t *p = NULL;    int is_cname = 0;    cos_status_t *s = NULL;    cos_request_options_t *options = NULL;    cos_string_t bucket;    cos_string_t object;    cos_table_t *resp_headers;    cos_string_t file;    int traffic_limit = 0;
    cos_pool_create(&p, NULL);    options = cos_request_options_create(p);    init_test_request_options(options, is_cname);    cos_table_t *headers = NULL;    if (traffic_limit) {        // 限速值设置范围为819200 - 838860800，单位默认为 bit/s，即800Kb/s - 800Mb/s，如果超出该范围将返回400错误        headers = cos_table_make(p, 1);        cos_table_add_int(headers, "x-cos-traffic-limit", 819200);    }    cos_str_set(&bucket, TEST_BUCKET_NAME);    cos_str_set(&file, TEST_OBJECT_NAME1);    cos_str_set(&object, TEST_OBJECT_NAME1);    s = cos_put_object_from_file(options, &bucket, &object, &file, headers, &resp_headers);    log_status(s);
    cos_pool_destroy(p);}
int main(int argc, char *argv[]){    // 通过环境变量获取 SECRETID 和 SECRETKEY    TEST_ACCESS_KEY_ID     = getenv("COS_SECRETID");    TEST_ACCESS_KEY_SECRET = getenv("COS_SECRETKEY");
    if (cos_http_io_initialize(NULL, 0) != COSE_OK) {       exit(1);    }
    //set log level, default COS_LOG_WARN    cos_log_set_level(COS_LOG_WARN);
    //set log output, default stderr    cos_log_set_output(NULL);
    test_put_object_from_file();
    cos_http_io_deinitialize();
    return 0;}

示例2：创建文件夹

COS 上可以将以 / 分隔的对象路径看做一个虚拟文件夹，根据此特性，可以上传一个空的流，并且命名以 / 结尾，可实现在 COS 上创建一个空文件夹。

#include "cos_http_io.h"#include "cos_api.h"#include "cos_log.h"
// endpoint 是 COS 访问域名信息，详情请参见 https://cloud.tencent.com/document/product/436/6224 文档static char TEST_COS_ENDPOINT[] = "cos.ap-guangzhou.myqcloud.com";// 开发者拥有的项目身份ID/密钥，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char *TEST_ACCESS_KEY_ID;                //your secret_idstatic char *TEST_ACCESS_KEY_SECRET;            //your secret_key// 开发者访问 COS 服务时拥有的用户维度唯一资源标识，用以标识资源，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char TEST_APPID[] = "";    //your appid//the cos bucket name, syntax: [bucket]-[appid], for example: mybucket-1253666666，可在 https://console.cloud.tencent.com/cos5/bucket 查看static char TEST_BUCKET_NAME[] = "";
void log_status(cos_status_t *s){    cos_warn_log("status->code: %d", s->code);    if (s->error_code) cos_warn_log("status->error_code: %s", s->error_code);    if (s->error_msg) cos_warn_log("status->error_msg: %s", s->error_msg);    if (s->req_id) cos_warn_log("status->req_id: %s", s->req_id);}
void init_test_config(cos_config_t *config, int is_cname){    cos_str_set(&config->endpoint, TEST_COS_ENDPOINT);    cos_str_set(&config->access_key_id, TEST_ACCESS_KEY_ID);    cos_str_set(&config->access_key_secret, TEST_ACCESS_KEY_SECRET);    cos_str_set(&config->appid, TEST_APPID);    config->is_cname = is_cname;}
void init_test_request_options(cos_request_options_t *options, int is_cname){    options->config = cos_config_create(options->pool);    init_test_config(options->config, is_cname);    options->ctl = cos_http_controller_create(options->pool, 0);}
void test_create_dir(){    cos_pool_t *p = NULL;    int is_cname = 0;     cos_status_t *s = NULL;    cos_request_options_t *options = NULL;    cos_string_t bucket;    cos_string_t object;    cos_table_t *resp_headers;    cos_table_t *headers = NULL;    cos_list_t buffer;
    cos_pool_create(&p, NULL);    options = cos_request_options_create(p);    init_test_request_options(options, is_cname);    cos_str_set(&bucket, TEST_BUCKET_NAME);    cos_str_set(&object, "folder/");
    //上传文件夹    cos_list_init(&buffer);    s = cos_put_object_from_buffer(options, &bucket, &object,             &buffer, headers, &resp_headers);    if (cos_status_is_ok(s)) {        printf("put object succeeded\n");    } else {        printf("put object failed\n");    }    cos_pool_destroy(p);}
int main(int argc, char *argv[]){    // 通过环境变量获取 SECRETID 和 SECRETKEY    TEST_ACCESS_KEY_ID     = getenv("COS_SECRETID");    TEST_ACCESS_KEY_SECRET = getenv("COS_SECRETKEY");
    if (cos_http_io_initialize(NULL, 0) != COSE_OK) {       exit(1);    }
    //set log level, default COS_LOG_WARN    cos_log_set_level(COS_LOG_WARN);
    //set log output, default stderr    cos_log_set_output(NULL);
    test_create_dir();
    cos_http_io_deinitialize();
    return 0;}

示例3：上传文件到虚拟目录

上传由 / 分隔的对象名，可自动创建包含文件的文件夹。想要在此文件夹中添加新文件时，只需要在上传文件至 COS 时，将 Key 填写为此目录前缀即可。

#include "cos_http_io.h"#include "cos_api.h"#include "cos_log.h"
// endpoint 是 COS 访问域名信息，详情请参见 https://cloud.tencent.com/document/product/436/6224 文档static char TEST_COS_ENDPOINT[] = "cos.ap-guangzhou.myqcloud.com";// 开发者拥有的项目身份ID/密钥，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char *TEST_ACCESS_KEY_ID;                //your secret_idstatic char *TEST_ACCESS_KEY_SECRET;            //your secret_key// 开发者访问 COS 服务时拥有的用户维度唯一资源标识，用以标识资源，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char TEST_APPID[] = "";    //your appid//the cos bucket name, syntax: [bucket]-[appid], for example: mybucket-1253666666，可在 https://console.cloud.tencent.com/cos5/bucket 查看static char TEST_BUCKET_NAME[] = "";
void log_status(cos_status_t *s){    cos_warn_log("status->code: %d", s->code);    if (s->error_code) cos_warn_log("status->error_code: %s", s->error_code);    if (s->error_msg) cos_warn_log("status->error_msg: %s", s->error_msg);    if (s->req_id) cos_warn_log("status->req_id: %s", s->req_id);}
void init_test_config(cos_config_t *config, int is_cname){    cos_str_set(&config->endpoint, TEST_COS_ENDPOINT);    cos_str_set(&config->access_key_id, TEST_ACCESS_KEY_ID);    cos_str_set(&config->access_key_secret, TEST_ACCESS_KEY_SECRET);    cos_str_set(&config->appid, TEST_APPID);    config->is_cname = is_cname;}
void init_test_request_options(cos_request_options_t *options, int is_cname){    options->config = cos_config_create(options->pool);    init_test_config(options->config, is_cname);    options->ctl = cos_http_controller_create(options->pool, 0);}
void test_upload_file_to_dir(){    cos_pool_t *p = NULL;    int is_cname = 0;     cos_status_t *s = NULL;    cos_request_options_t *options = NULL;    cos_string_t bucket;    cos_string_t object;    cos_string_t file;    cos_table_t *resp_headers;
    cos_pool_create(&p, NULL);    options = cos_request_options_create(p);    init_test_request_options(options, is_cname);    cos_str_set(&bucket, TEST_BUCKET_NAME);    cos_str_set(&file, "examplefile");    cos_str_set(&object, "folder/exampleobject");    s = cos_put_object_from_file(options, &bucket, &object, &file, NULL, &resp_headers);    if (cos_status_is_ok(s)) {        printf("put object succeeded\n");    } else {        printf("put object failed\n");    }    cos_pool_destroy(p);}
int main(int argc, char *argv[]){    // 通过环境变量获取 SECRETID 和 SECRETKEY    TEST_ACCESS_KEY_ID     = getenv("COS_SECRETID");    TEST_ACCESS_KEY_SECRET = getenv("COS_SECRETKEY");
    if (cos_http_io_initialize(NULL, 0) != COSE_OK) {       exit(1);    }
    //set log level, default COS_LOG_WARN    cos_log_set_level(COS_LOG_WARN);
    //set log output, default stderr    cos_log_set_output(NULL);
    test_upload_file_to_dir();
    cos_http_io_deinitialize();
    return 0;}

追加上传对象

功能说明

使用分块追加的方式上传对象，追加上传的对象，每个分块大小默认最大为5GB，无最小限制，同时通过追加方式产生的对象大小不得超过5GB。如果 Position 的值和当前对象的长度不一致，COS 将返回409错误。如果追加一个 normal 属性的文件，COS 将返回409 ObjectNotAppendable。

方法原型

cos_status_t *cos_append_object_from_file(const cos_request_options_t *options,                                          const cos_string_t *bucket,                                           const cos_string_t *object,                                           int64_t position,                                          const cos_string_t *append_file,                                           cos_table_t *headers,                                           cos_table_t **resp_headers);

参数说明

返回结果说明

示例

#include "cos_http_io.h"#include "cos_api.h"#include "cos_log.h"
// endpoint 是 COS 访问域名信息，详情请参见 https://cloud.tencent.com/document/product/436/6224 文档static char TEST_COS_ENDPOINT[] = "cos.ap-guangzhou.myqcloud.com";// 开发者拥有的项目身份ID/密钥，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char *TEST_ACCESS_KEY_ID;                //your secret_idstatic char *TEST_ACCESS_KEY_SECRET;            //your secret_key// 开发者访问 COS 服务时拥有的用户维度唯一资源标识，用以标识资源，可在 https://console.cloud.tencent.com/cam/capi 页面获取static char TEST_APPID[] = "";    //your appid//the cos bucket name, syntax: [bucket]-[appid], for example: mybucket-1253666666，可在 https://console.cloud.tencent.com/cos5/bucket 查看static char TEST_BUCKET_NAME[] = "";static char TEST_OBJECT_NAME3[] = "test3.dat";static char *TEST_APPEND_NAMES[] = {"test.7z.001", "test.7z.002"};
void log_status(cos_status_t *s){    cos_warn_log("status->code: %d", s->code);    if (s->error_code) cos_warn_log("status->error_code: %s", s->error_code);    if (s->error_msg) cos_warn_log("status->error_msg: %s", s->error_msg);    if (s->req_id) cos_warn_log("status->req_id: %s", s->req_id);}
void init_test_config(cos_config_t *config, int is_cname){    cos_str_set(&config->endpoint, TEST_COS_ENDPOINT);    cos_str_set(&config->access_key_id, TEST_ACCESS_KEY_ID);    cos_str_set(&config->access_key_secret, TEST_ACCESS_KEY_SECRET);    cos_str_set(&config->appid, TEST_APPID);    config->is_cname = is_cname;}
void init_test_request_options(cos_request_options_t *options, int is_cname){    options->config = cos_config_create(options->pool);    init_test_config(options->config, is_cname);    options->ctl = cos_http_controller_create(options->pool, 0);}
void test_append_object(){    cos_pool_t *p = NULL;    int is_cname = 0;    cos_status_t *s = NULL;    cos_request_options_t *options = NULL;    cos_string_t bucket;    cos_string_t object;    cos_string_t file;    cos_table_t *resp_headers = NULL;
    //创建内存池    cos_pool_create(&p, NULL);
    //初始化请求选项    options = cos_request_options_create(p);    init_test_request_options(options, is_cname);    cos_str_set(&bucket, TEST_BUCKET_NAME);
    //追加上传对象    cos_str_set(&object, TEST_OBJECT_NAME3);    int32_t count = sizeof(TEST_APPEND_NAMES)/sizeof(char*);    int32_t index = 0;    int64_t position = 0;    s = cos_head_object(options, &bucket, &object, NULL, &resp_headers);    if(s->code == 200) {        char *content_length_str = (char*)apr_table_get(resp_headers, COS_CONTENT_LENGTH);        if (content_length_str != NULL) {            position = atol(content_length_str);        }    }    for (; index < count; index++)    {        cos_str_set(&file, TEST_APPEND_NAMES[index]);        s = cos_append_object_from_file(options, &bucket, &object,                                         position, &file, NULL, &resp_headers);        log_status(s);
        s = cos_head_object(options, &bucket, &object, NULL, &resp_headers);        if(s->code == 200) {            char *content_length_str = (char*)apr_table_get(resp_headers, COS_CONTENT_LENGTH);            if (content_length_str != NULL) {                position = atol(content_length_str);            }        }    }
    //销毁内存池    cos_pool_destroy(p); }
int main(int argc, char *argv[]){    // 通过环境变量获取 SECRETID 和 SECRETKEY    TEST_ACCESS_KEY_ID     = getenv("COS_SECRETID");    TEST_ACCESS_KEY_SECRET = getenv("COS_SECRETKEY");
    if (cos_http_io_initialize(NULL, 0) != COSE_OK) {       exit(1);    }
    //set log level, default COS_LOG_WARN    cos_log_set_level(COS_LOG_WARN);
    //set log output, default stderr    cos_log_set_output(NULL);
    test_append_object();
    cos_http_io_deinitialize();
    return 0;}