不知道爲什麼cocos2dx中似乎沒有把extensions/network裏的HttpClient集成進去,自己試了一下DIY也不是很難,現總結如下
首先CCHttpRequest中的setResponseCallback需要處理一下,因爲這裏我們需要的是一個lua的回調而並非c++的,
處理方案參考CCSchduler中的scheduleScriptFunc,採用lua的handler來解決
最終代碼如下:
pkg文件
class CCHttpClient : CCObject
{
static CCHttpClient *getInstance();
static void destroyInstance();
void send(CCHttpRequest* request);
void setTimeoutForConnect(int value);
int getTimeoutForConnect();
void setTimeoutForRead(int value);
int getTimeoutForRead();
};
class CCHttpRequest : CCObject
{
typedef enum
{
kHttpGet,
kHttpPost,
kHttpPut,
kHttpDelete,
kHttpUnkown,
} HttpRequestType;
void setRequestType(HttpRequestType type);
HttpRequestType getRequestType();
void setUrl(const char* url);
const char* getUrl();
void setRequestData(const char* buffer, unsigned int len);
char* getRequestData();
int getRequestDataSize();
void setTag(const char* tag);
const char* getTag();
};
class CCLuaHttpRequest: CCHttpRequest
{
void setResponseScriptCallback(LUA_FUNCTION aHandler);
static CCLuaHttpRequest* create();
static bool mkdirs(std::string aDir);
};
LuaHttpRequest.h
#ifndef CCLUAHTTPREQUEST_H_
#define CCLUAHTTPREQUEST_H_
#include <network/HttpClient.h>
USING_NS_CC;
USING_NS_CC_EXT;
class CCLuaHttpRequest: public CCHttpRequest
{
public:
CCLuaHttpRequest();
virtual ~CCLuaHttpRequest();
public:
static CCLuaHttpRequest* create();
static bool mkdirs(std::string aDir);
/**
* 設置一個用於回調的lua函數
*/
void setResponseScriptCallback(unsigned int aHandler);
private:
/**
* 默認的用於c++的回調,由這裏統一處理到lua的回調
*/
void responseScriptCallback(CCHttpClient* apClient, CCHttpResponse* apResponse);
private:
/**
* 當前保存的handler
*/
unsigned int mHandler;
};
#endif /* CCLUAHTTPREQUEST_H_ */
LuaHttpRequest.cpp
#include "LuaHttpRequest.h"
#include "CCLuaEngine.h"
#include <sys/stat.h>
#include <sys/types.h>
#include <errno.h>
CCLuaHttpRequest::CCLuaHttpRequest() :
mHandler(0)
{
}
CCLuaHttpRequest::~CCLuaHttpRequest()
{
}
CCLuaHttpRequest* CCLuaHttpRequest::create()
{
return new CCLuaHttpRequest;
}
bool CCLuaHttpRequest::mkdirs(std::string aDir)
{
if (aDir.size() == 0)
{
return true;
}
CCLOG("creating dir:%s", aDir.c_str());
bool isFirst = aDir[0] == '/';
bool isLast = false;
for (unsigned int i = 1; i < aDir.size(); i++)
{
if (aDir[i] == '/')
{
if (isLast)
{
continue;
}
isLast = true;
if (isFirst)
{
isFirst = false;
continue;
}
std::string path = aDir.substr(0, i);
if (CCFileUtils::sharedFileUtils()->isFileExist(path.c_str()))
{
CCLOG("path:%s exist", path.c_str());
continue;
}
int ret = mkdir(path.c_str(), 0700);
if (ret && errno != EEXIST)
{
CCLOG("mkdir:%s failed", path.c_str());
return false;
}
else
{
CCLOG("path:%s created", path.c_str());
}
}
else
{
isLast = false;
}
}
return true;
}
void CCLuaHttpRequest::setResponseScriptCallback(unsigned int aHandler)
{
mHandler = aHandler;
setResponseCallback(this, httpresponse_selector(CCLuaHttpRequest::responseScriptCallback));
}
void CCLuaHttpRequest::responseScriptCallback(CCHttpClient* apClient, CCHttpResponse* apResponse)
{
CCLuaEngine* pEngine =
dynamic_cast<CCLuaEngine*>(CCScriptEngineManager::sharedManager()->getScriptEngine());
CCLuaStack* pStack = pEngine->getLuaStack();
bool isSucceed = apResponse->isSucceed();
int status = apResponse->getResponseCode();
const char* errorBuffer = apResponse->getErrorBuffer();
std::vector<char>* headerBuffer = apResponse->getResponseHeader();
std::vector<char>* bodyBuffer = apResponse->getResponseData();
std::string header(headerBuffer->begin(), headerBuffer->end());
std::string body(bodyBuffer->begin(), bodyBuffer->end());
pStack->pushCCObject(apResponse->getHttpRequest(), "CCHttpRequest");
pStack->pushBoolean(isSucceed); //是否成功
pStack->pushString(body.c_str(), body.size()); //body
pStack->pushString(header.c_str()); //header
pStack->pushInt(status); //狀態碼
pStack->pushString(errorBuffer); //錯誤描述
pStack->executeFunctionByHandler(mHandler, 6);
pStack->clean();
}
注意使用tolua++的時候需要注意一下-L basic.lua
最終使用的lua代碼如下
local request = CCLuaHttpRequest:create()
request:setUrl(url)
request:setTag(tag)
request:setRequestType(CCHttpRequest.kHttpGet)
request:setResponseScriptCallback(dlImageCallback)
CCHttpClient:getInstance():send(request)
request:release()