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【Cocos2d-x游戏引擎开发笔记(21)】CCHttpRequest联网       

        分类：            Cocos2d-x游戏引擎开发 2013-03-12 16:49 3640人阅读 评论(4) 收藏 举报

Cocos2d-x

原创文章，转载请注明出处：http://blog.youkuaiyun.com/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

[cpp] view plain copy print ?

1. #include "cocos-ext.h" 
2. USING_NS_CC_EXT; 
3. #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

[cpp] view plain copy print ?

1. void HelloWorld::getClicked(CCObject *sender) 
2. { 
3.     //编译到Android平台之后注意添加联网权限 
4.  
5.  
6.     cocos2d::extension::CCHttpRequest* request = new cocos2d::extension::CCHttpRequest();//创建对象 
7.      request->setUrl("http://www.baidu.com");//设置请求地址 
8.      request->setRequestType(CCHttpRequest::kHttpGet); 
9.      /*请求的类型
10.         kHttpGet,get请求
11.         kHttpPost,post请求
12.         kHttpUnkown 呵呵
13.      */ 
14.      request->setResponseCallback(this, callfuncND_selector(HelloWorld::onGetFinished));//请求完的回调函数 
15.      request->setRequestData("HelloWorld",strlen("HelloWorld"));//请求的数据 
16.      request->setTag("get qing  qiu baidu ");//tag 
17.      CCHttpClient::getInstance()->send(request);//发送请求 
18.     request->release();//释放内存，前面使用了new 
19.  
20.  
21. } 

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

[cpp] view plain copy print ?

1. void HelloWorld::postClicked(CCObject *sender) 
2. { 
3.  
4.  
5.         CCHttpRequest* request = new CCHttpRequest(); 
6.         request->setUrl("http://www.httpbin.org/post"); 
7.         request->setRequestType(CCHttpRequest::kHttpPost); 
8.         request->setResponseCallback(this, callfuncND_selector(HelloWorld::onGetFinished)); 
9.          
10.         // write the post data 
11.         const char* postData = "visitor=cocos2d&TestSuite=Extensions Test/NetworkTest"; 
12.         request->setRequestData(postData, strlen(postData));  
13.          
14.         request->setTag("POST test1"); 
15.         CCHttpClient::getInstance()->send(request); 
16.         request->release(); 
17.  
18. } 

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

[cpp] view plain copy print ?

1. void HelloWorld::onGetFinished(CCNode *node,void *data) 
2. { 
3.     CCHttpResponse *response = (CCHttpResponse*)data; 
4.      if (!response) 
5.     { 
6.         return; 
7.     } 
8.      int s=response->getHttpRequest()->getRequestType(); 
9.      CCLog("request type %d",s); 
10.  
11.  
12.      if (0 != strlen(response->getHttpRequest()->getTag()))  
13.     { 
14.         CCLog("%s ------>oked", response->getHttpRequest()->getTag()); 
15.     } 
16.  
17.      int statusCode = response->getResponseCode(); 
18.       CCLog("response code: %d", statusCode); 
19.  
20.  
21.     char statusString[64] = {}; 
22.     sprintf(statusString, "HTTP Status Code: %d, tag = %s", statusCode, response->getHttpRequest()->getTag()); 
23.     CCLog(statusString); 
24.  
25.      if (!response->isSucceed())  
26.     { 
27.         CCLog("response failed"); 
28.         CCLog("error buffer: %s", response->getErrorBuffer()); 
29.         return; 
30.     } 
31.  
32.     std::vector<char> *buffer = response->getResponseData(); 
33.     printf("Http Test, dump data: "); 
34.     for (unsigned int i = 0; i < buffer->size(); i++) 
35.     { 
36.         CCLog("%c", (*buffer)[i]);//这里打印从服务器返回的数据 
37.          
38.     } 
39.     printf("\n"); 
40.  
41. } 

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。

最后提供代码下载：点击打开链接。