Cocos 2.2.3资源在线下载

Cocos 2.2.3资源在线下载


服务器端:


1.下载hfs服务器,解压缩即可用

2.将资源拖入虚拟文件系统

3.打开cmd,输入ipconfig查看IP地址:192.168.100.11

4.菜单——IP地址——选择对应的IP

若没有对应的IP,则IP地址——自定义,输入IP地址,然后再进行选择

 

Cocos端:

1.包含#include <curl/curl.h>

2.贴入如下代码:

static size_t downLoadPackage(void *ptr, size_t size, size_t nmemb, void *userdata)
{//该函数用于将服务器上的资源写入文件
    FILE *fp = (FILE*)userdata;
    size_t written = fwrite(ptr, size, nmemb, fp);
    return written;
}

int DLManagerProgressFunc(void *ptr, double totalToDownload, double nowDownloaded,  double totalToUpLoad, double nowUpLoaded)
{//用于输出下载进度
    CCLog("downloading... %d%%", (int)(nowDownloaded/totalToDownload*100));
    return 0;
}

void HelloWorld::menuCloseCallback(CCObject* pSender)
{
    //资源在服务器上的路径
    std::string _packageUrl = "http://192.168.100.11/AssociativeVideo/B.mp4";

    //资源存储在本地的路径
    std::string _storagePath = CCFileUtils::sharedFileUtils()->getWritablePath() + "B.mp4";

    FILE *fp = fopen(_storagePath.c_str(), "wb");
    if (! fp)
    {
        CCLog("can not create file %s", _storagePath.c_str());
        return ;
    }

    //通过CURL进行下载
    CURL *_curl;
    _curl = curl_easy_init();
    if (! _curl)
    {
        CCLog("can not init curl");
        return ;
    }

    // Download pacakge
    CURLcode res;
    curl_easy_setopt(_curl, CURLOPT_URL, _packageUrl.c_str());
    curl_easy_setopt(_curl, CURLOPT_WRITEFUNCTION, downLoadPackage);
    curl_easy_setopt(_curl, CURLOPT_WRITEDATA, fp);
    curl_easy_setopt(_curl, CURLOPT_NOPROGRESS, false);
    curl_easy_setopt(_curl, CURLOPT_PROGRESSFUNCTION, DLManagerProgressFunc);
    curl_easy_setopt(_curl, CURLOPT_PROGRESSDATA, this);
    res = curl_easy_perform(_curl);
    curl_easy_cleanup(_curl);
    
    if (res != 0)
    {
        CCLog("error when download package");
        fclose(fp);
        return ;
    }

    //下载成功后输出该语句
    CCLog("succeed downloading package %s", _packageUrl.c_str());
    fclose(fp);
}

3.运行通过控制台看下载状态,下载成功后可去_storagePath路径下查看下载下的文件

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