Cocos2d-x CCHttpRequest联网

转自：http://blog.csdn.net/zhy_cheng/article/details/8664432

 

使用CCHttprequest联网有两种方法get和post。get和post都可以从服务器获取数据，这两种联网的方法有所不同。下面简单的区分一下

1.get提交的时候数据放到URL后面，post放在HTTP协议消息体中。

2.get数据量大小有限制，2KB，post理论上没限制。

3.get的安全性比post差。

下面来看看cocos2d-x中怎么来与服务器传递数据。

首先配置环境

 #include "cocos-ext.h"
 USING_NS_CC_EXT;
 #pragma comment(lib,"pthreadVCE2.lib");

 #include "cocos-ext.h"
 USING_NS_CC_EXT;
 #pragma comment(lib,"pthreadVCE2.lib");

然后再项目上右击-->属性-->C/C++--->常规---->附加包目录

加入如下目录D:\cocos2d-2.1beta3-x-2.1.0\extensions。

然后再在项目上右击--->属性--->链接器--->附加依赖项

添加

libcurl_imp.lib
libExtensions.lib。

好了，环境配置好了。

先来说get请求

 void HelloWorld::getClicked(CCObject *sender)
 {
 //编译到Android平台之后注意添加联网权限


 cocos2d::extension::CCHttpRequest* request = new cocos2d::extension::CCHttpRequest();//创建对象
 request->setUrl("http://www.baidu.com");//设置请求地址
 request->setRequestType(CCHttpRequest::kHttpGet);
 /*请求的类型
 kHttpGet,get请求
 kHttpPost,post请求
 kHttpUnkown 呵呵
 */
 request->setResponseCallback(this, callfuncND_selector(HelloWorld::onGetFinished));//请求完的回调函数
 request->setRequestData("HelloWorld",strlen("HelloWorld"));//请求的数据
 request->setTag("get qing qiu baidu ");//tag
 CCHttpClient::getInstance()->send(request);//发送请求
 request->release();//释放内存，前面使用了new


 }

 void HelloWorld::getClicked(CCObject *sender)
 {
     //编译到Android平台之后注意添加联网权限


     cocos2d::extension::CCHttpRequest* request = new cocos2d::extension::CCHttpRequest();//创建对象
      request->setUrl("http://www.baidu.com");//设置请求地址
      request->setRequestType(CCHttpRequest::kHttpGet);
      /*请求的类型
         kHttpGet,get请求
         kHttpPost,post请求
         kHttpUnkown 呵呵
      */
      request->setResponseCallback(this, callfuncND_selector(HelloWorld::onGetFinished));//请求完的回调函数
      request->setRequestData("HelloWorld",strlen("HelloWorld"));//请求的数据
      request->setTag("get qing  qiu baidu ");//tag
      CCHttpClient::getInstance()->send(request);//发送请求
     request->release();//释放内存，前面使用了new


 }

post请求如下

 void HelloWorld::postClicked(CCObject *sender)
 {


 CCHttpRequest* request = new CCHttpRequest();
 request->setUrl("http://www.httpbin.org/post");
 request->setRequestType(CCHttpRequest::kHttpPost);
 request->setResponseCallback(this, callfuncND_selector(HelloWorld::onGetFinished));

 // write the post data
 const char* postData = "visitor=cocos2d&TestSuite=Extensions Test/NetworkTest";
 request->setRequestData(postData, strlen(postData));

 request->setTag("POST test1");
 CCHttpClient::getInstance()->send(request);
 request->release();

 }

 void HelloWorld::postClicked(CCObject *sender)
 {


         CCHttpRequest* request = new CCHttpRequest();
         request->setUrl("http://www.httpbin.org/post");
         request->setRequestType(CCHttpRequest::kHttpPost);
         request->setResponseCallback(this, callfuncND_selector(HelloWorld::onGetFinished));

         // write the post data
         const char* postData = "visitor=cocos2d&TestSuite=Extensions Test/NetworkTest";
         request->setRequestData(postData, strlen(postData));

         request->setTag("POST test1");
         CCHttpClient::getInstance()->send(request);
         request->release();

 }

在onGetFinished函数中，对请求的之后服务器返回的数据进行处理

 void HelloWorld::onGetFinished(CCNode *node,void *data)
 {
 CCHttpResponse *response = (CCHttpResponse*)data;
 if (!response)
 {
 return;
 }
 int s=response->getHttpRequest()->getRequestType();
 CCLog("request type %d",s);


 if (0 != strlen(response->getHttpRequest()->getTag()))
 {
 CCLog("%s ------>oked", response->getHttpRequest()->getTag());
 }

 int statusCode = response->getResponseCode();
 CCLog("response code: %d", statusCode);


 char statusString[64] = {};
 sprintf(statusString, "HTTP Status Code: %d, tag = %s", statusCode, response->getHttpRequest()->getTag());
 CCLog(statusString);

 if (!response->isSucceed())
 {
 CCLog("response failed");
 CCLog("error buffer: %s", response->getErrorBuffer());
 return;
 }

 std::vector<char> *buffer = response->getResponseData();
 printf("Http Test, dump data: ");
 for (unsigned int i = 0; i < buffer->size(); i++)
 {
 CCLog("%c", (*buffer)[i]);//这里打印从服务器返回的数据

 }
 printf("\n");

 }

 void HelloWorld::onGetFinished(CCNode *node,void *data)
 {
     CCHttpResponse *response = (CCHttpResponse*)data;
      if (!response)
     {
         return;
     }
      int s=response->getHttpRequest()->getRequestType();
      CCLog("request type %d",s);


      if (0 != strlen(response->getHttpRequest()->getTag()))
     {
         CCLog("%s ------>oked", response->getHttpRequest()->getTag());
     }

      int statusCode = response->getResponseCode();
       CCLog("response code: %d", statusCode);


     char statusString[64] = {};
     sprintf(statusString, "HTTP Status Code: %d, tag = %s", statusCode, response->getHttpRequest()->getTag());
     CCLog(statusString);

      if (!response->isSucceed())
     {
         CCLog("response failed");
         CCLog("error buffer: %s", response->getErrorBuffer());
         return;
     }

     std::vector<char> *buffer = response->getResponseData();
     printf("Http Test, dump data: ");
     for (unsigned int i = 0; i < buffer->size(); i++)
     {
         CCLog("%c", (*buffer)[i]);//这里打印从服务器返回的数据

     }
     printf("\n");

 }

这就是使用CCHttprequest联网的实现，在TestCpp里有一个实例，我在实现的时候参考的就是TestCpp。

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