C++实现HTTP Get和Post请求

2018-01-03 2条评论 11,585次阅读 2人点赞

因为以前用Java写Android的时候感觉Java已经封装得很好了，HTTP实现的东西都不是很了解。然后就买了本HTTP入门书籍《图解HTTP》来读，快速读完了，那就用C++实现简单的HTTP Get和Post请求吧。

在编写代码前，还是需要将HTTP Get和Post请求的区别做下说明的，《图解HTTP》这本书毕竟是入门书籍，这两个的区别都没有说得很详细，所以这里借助互联网，参考下W3School对Get和Post方法的总结。

Get和Post请求的区别

在客户机和服务器之间进行请求-响应时，两种最常被用到的方法是：GET 和 POST。

GET – 从指定的资源请求数据。
POST – 向指定的资源提交要被处理的数据

Get方法

请注意，查询字符串（名称/值对）是在 GET 请求的 URL 中发送的：

/test/demo_form.asp?name1=value1&name2=value2

1	/test/demo_form.asp?name1=value1&name2=value2

有关 GET 请求的其他一些注释：

GET 请求可被缓存
GET 请求保留在浏览器历史记录中
GET 请求可被收藏为书签
GET 请求不应在处理敏感数据时使用
GET 请求有长度限制
GET 请求只应当用于取回数据

Post方法

请注意，查询字符串（名称/值对）是在 POST 请求的 HTTP 消息主体中发送的：

POST /test/demo_form.asp HTTP/1.1
Host: w3schools.com
name1=value1&name2=value2

POST /test/demo_form.asp HTTP/1.1

Host: w3schools.com

name1=value1&name2=value2

有关 POST 请求的其他一些注释：

POST 请求不会被缓存
POST 请求不会保留在浏览器历史记录中
POST 不能被收藏为书签
POST 请求对数据长度没有要求

比较 GET 与 POST

下面的表格比较了两种 HTTP 方法：GET 和 POST。

	GET	POST
后退按钮/刷新	无害	数据会被重新提交（浏览器应该告知用户数据会被重新提交）
书签	可收藏为书签	不可收藏为书签
缓存	可被缓存	不能缓存
历史	参数保留在浏览器历史中	参数不会保存在浏览器历史中
对数据长度限制	是的。当发送数据时，GET方法向URL添加数据；URL的长度是受限制的（URL的最大长度是2048个字符）	无限制
对数据类型的限制	只允许ASCII字符	没有限制，也允许二进制数据
安全性	和POST相比，GET的安全性较差，因为所发送的数据是URL的一部分。在发送密码或其他，敏感信息时决不能使用GET	POST比GET更安全，因为参数不会被保存在浏览器历史或web服务器日志中
可见性	数据在URL中所有人都是可见的	数据不会显示在URL中

下面做一些额外的补充：

在数据类型限制这一块，如果数据是英文字母/数字，原样发送，如果是空格，转换为+，如果是中文/其他字符，则直接把字符串用BASE64加密，得出如：%E4%BD%A0%E5%A5%BD，其中％XX中的XX为该符号以16进制表示的ASCII。
对于数据长度的限制一部分找到其他的说法，首先是”GET方式提交的数据最多只能是2048字节”，因为GET是通过URL提交数据，那么GET可提交的数据量就跟URL的长度有直接关系了。而实际上，URL不存在参数上限的问题，HTTP协议规范没有对URL长度进行限制。这个限制是特定的浏览器及服务器对它的限制。IE对URL长度的限制是2083字节(2K+35)。对于其他浏览器，如Netscape、FireFox等，理论上没有长度限制，其限制取决于操作系统的支持。

OK，概念性的东西就介绍到这里了，下面还要多介绍一个Linux函数的使用：gethostbyname

gethostbyname()函数说明

想要使用gethostbyname需要包含的头文件

#include <netdb.h>
#include <sys/socket.h>

1 2	#include <netdb.h> #include <sys/socket.h>

函数原型：

struct hostent *gethostbyname(const char *name);

1	struct hostent gethostbyname(const char name);

hostent结构体的定义如下：

struct hostent
{
    char    *h_name;               
    char    **h_aliases;
    int     h_addrtype;
    int     h_length;
    char    **h_addr_list;
    #define h_addr h_addr_list[0]
};

struct hostent

{

char *h_name;

char **h_aliases;

int h_addrtype;

int h_length;

char **h_addr_list;

#define h_addr h_addr_list[0]

};

下面是结构体各个字段的解析：

hostent->h_name：表示的是主机的规范名。例如www.google.com的规范名其实是www.l.google.com。
hostent->h_aliases：表示的是主机的别名.www.google.com就是google他自己的别名。有的时候，有的主机可能有好几个别名，这些，其实都是为了易于用户记忆而为自己的网站多取的名字。
hostent->h_addrtype：表示的是主机ip地址的类型，到底是ipv4(AF_INET)，还是pv6(AF_INET6)
hostent->h_length：表示的是主机ip地址的长度
hostent->h_addr_lisst：表示的是主机的ip地址，注意，这个是以网络字节序存储的。千万不要直接用printf带%s参数来打这个东西，会有问题的哇。所以到真正需要打印出这个IP的话，需要调用inet_ntop()。

下面通过一个代码讲解一下这个函数的使用：

#include <iostream>
#include <netdb.h>
#include <arpa/inet.h>

using namespace std;

// 该示例需要转换的Host name
const string kTestHostName1 = "www.blog4jimmy.com";
const string kTestHostName2 = "www.baidu.com";

int main()
{
    struct hostent *hostent1, *hostent2;
    char **pptr;
    char str[32];

    hostent1 = gethostbyname(kTestHostName1.c_str());
    if(hostent1 == nullptr) {
        cout << "gethostbyname error for host:" << kTestHostName1 << endl;
    }
    else
    {
        cout << "For " << kTestHostName1 << ": " << endl;
        // 打印主机的规范名
        cout << "h_name: " << hostent1->h_name << endl;

        // 打印主机的别名
        pptr = hostent1->h_aliases;
        for(;*pptr != nullptr; pptr++)
            cout << "h_aliases: " << *pptr << endl;

        // 打印主机的IP地址
        switch(hostent1->h_addrtype) {
        case AF_INET:
        case AF_INET6:
            pptr = hostent1->h_addr_list;
            for(; *pptr != nullptr; pptr++) {
                cout << "IP Addr: " << inet_ntop(hostent1->h_addrtype, *pptr, str, sizeof(str)) << endl;
            }
        }

        // 打印主机的首先IP地址
        cout << "First address: " << inet_ntop(hostent1->h_addrtype, hostent1->h_addr, str, sizeof(str)) << endl;
    }

    // 打印的内容和上面的一样，这里不多做讲解
    hostent2 = gethostbyname(kTestHostName2.c_str());
    if(hostent2 == nullptr) {
        cout << "gethostbyname error for host:" << kTestHostName1 << endl;
    }
    else
    {
        cout << endl;
        cout << "For " << kTestHostName2 << ": " << endl;
        cout << "h_name: " << hostent2->h_name << endl;
        pptr = hostent2->h_aliases;
        for(;*pptr != nullptr; pptr++)
            cout << "h_aliases: " << *pptr << endl;

                switch(hostent1->h_addrtype) {
        case AF_INET:
        case AF_INET6:
            pptr = hostent1->h_addr_list;
            for(; *pptr != nullptr; pptr++) {
                cout << "IP Addr: " << inet_ntop(hostent1->h_addrtype, *pptr, str, sizeof(str)) << endl;
            }
        }

        cout << "First address: " << inet_ntop(hostent1->h_addrtype, hostent1->h_addr, str, sizeof(str)) << endl;
    }

    return 0;
}

#include <iostream>

#include <netdb.h>

#include <arpa/inet.h>

using namespace std;

// 该示例需要转换的Host name

const string kTestHostName1 = "www.blog4jimmy.com";

const string kTestHostName2 = "www.baidu.com";

int main()

{

struct hostent *hostent1, *hostent2;

char **pptr;

char str[32];

hostent1 = gethostbyname(kTestHostName1.c_str());

if(hostent1 == nullptr) {

cout << "gethostbyname error for host:" << kTestHostName1 << endl;

}

else

{

cout << "For " << kTestHostName1 << ": " << endl;

// 打印主机的规范名

cout << "h_name: " << hostent1->h_name << endl;

// 打印主机的别名

pptr = hostent1->h_aliases;

for(;*pptr != nullptr; pptr++)

cout << "h_aliases: " << *pptr << endl;

// 打印主机的IP地址

switch(hostent1->h_addrtype) {

case AF_INET:

case AF_INET6:

pptr = hostent1->h_addr_list;

for(; *pptr != nullptr; pptr++) {

cout << "IP Addr: " << inet_ntop(hostent1->h_addrtype, *pptr, str, sizeof(str)) << endl;

}

// 打印主机的首先IP地址

cout << "First address: " << inet_ntop(hostent1->h_addrtype, hostent1->h_addr, str, sizeof(str)) << endl;

}

// 打印的内容和上面的一样，这里不多做讲解

hostent2 = gethostbyname(kTestHostName2.c_str());

if(hostent2 == nullptr) {

cout << "gethostbyname error for host:" << kTestHostName1 << endl;

}

else

{

cout << endl;

cout << "For " << kTestHostName2 << ": " << endl;

cout << "h_name: " << hostent2->h_name << endl;

pptr = hostent2->h_aliases;

for(;*pptr != nullptr; pptr++)

cout << "h_aliases: " << *pptr << endl;

switch(hostent1->h_addrtype) {

case AF_INET:

case AF_INET6:

pptr = hostent1->h_addr_list;

for(; *pptr != nullptr; pptr++) {

cout << "IP Addr: " << inet_ntop(hostent1->h_addrtype, *pptr, str, sizeof(str)) << endl;

}

cout << "First address: " << inet_ntop(hostent1->h_addrtype, hostent1->h_addr, str, sizeof(str)) << endl;

}

return 0;

}

最后运行打印的结果如下：

For www.blog4jimmy.com: 
h_name: www.blog4jimmy.com
IP Addr: 166.62.28.146
First address: 166.62.28.146

For www.baidu.com: 
h_name: www.a.shifen.com
h_aliases: www.baidu.com
IP Addr: 14.215.177.39
IP Addr: 14.215.177.38
First address: 14.215.177.39

For www.blog4jimmy.com:

h_name: www.blog4jimmy.com

IP Addr: 166.62.28.146

First address: 166.62.28.146

For www.baidu.com:

h_name: www.a.shifen.com

h_aliases: www.baidu.com

IP Addr: 14.215.177.39

IP Addr: 14.215.177.38

First address: 14.215.177.39

获取到了IP地址后，其实可以直接通过IP地址来访问baidu，但是因为我的博客使用共享主机，所以直接通过IP地址访问好像有问题，具体原因博主也不是很清楚。但是访问通过IP地址来访问baidu是没问题的，大家可以试一试。

C++实现GET和POST请求

HttpGetPostMethod头文件如下：

#ifndef HTTPGETPOSTMETHOD_H
#define HTTPGETPOSTMETHOD_H
#include <iostream>

class HttpGetPostMethod
{
    public:
        HttpGetPostMethod();
        virtual ~HttpGetPostMethod();
        // Http GET 请求
        int HttpGet(std::string host, std::string path, std::string get_content);
        // Http POST 请求
        int HttpPost(std::string host, std::string path, std::string post_content);
        std::string get_request_return();
        std::string get_main_text();
        int get_return_status_code();

    protected:

    private:
        // 记录请求返回的状态码
        int return_status_code_;
        // 记录请求返回所有数据
        std::string request_return_;
        // 记录请求返回的报文部分
        std::string main_text_;
        // HTTP请求过程中使用到的Socket通信部分
        std::string HttpSocket(std::string host, std::string request_str);
        // 将HTTP请求返回的数据分解
        void AnalyzeReturn(void);
};

#endif // HTTPGETPOSTMETHOD_H

#ifndef HTTPGETPOSTMETHOD_H

#define HTTPGETPOSTMETHOD_H

#include <iostream>

class HttpGetPostMethod

{

public:

HttpGetPostMethod();

virtual ~HttpGetPostMethod();

// Http GET 请求

int HttpGet(std::string host, std::string path, std::string get_content);

// Http POST 请求

int HttpPost(std::string host, std::string path, std::string post_content);

std::string get_request_return();

std::string get_main_text();

int get_return_status_code();

protected:

private:

// 记录请求返回的状态码

int return_status_code_;

// 记录请求返回所有数据

std::string request_return_;

// 记录请求返回的报文部分

std::string main_text_;

// HTTP请求过程中使用到的Socket通信部分

std::string HttpSocket(std::string host, std::string request_str);

// 将HTTP请求返回的数据分解

void AnalyzeReturn(void);

};

#endif // HTTPGETPOSTMETHOD_H

源码文件如下：

#include "../include/HttpGetPostMethod.h"

#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <string>
#include <cstring>
#include <netdb.h>
#include <sstream>
#include <sys/select.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>

using namespace std;

HttpGetPostMethod::HttpGetPostMethod() : return_status_code_(0), request_return_(""), main_text_("")
{

}

HttpGetPostMethod::~HttpGetPostMethod()
{

}

// 分解HTTP请求返回的数据
void HttpGetPostMethod::AnalyzeReturn(void)
{
    size_t position1 = request_return_.find_first_of(" ", 0);
    size_t position2 = request_return_.find(" ", position1+1);
    return_status_code_ = atoi(request_return_.substr(position1+1, position2).c_str());

    position1 = request_return_.find("\r\n\r\n", position2);
    main_text_ = request_return_.substr(position1+4);
}

// HTTP GET请求
int HttpGetPostMethod::HttpGet(std::string host, std::string path, std::string get_content)
{
    stringstream request_str;
    request_str << "GET " << path << (path=="/" ? "" : "?") << get_content << " HTTP/1.1" << "\r\n";
    request_str << "Host: " << host << "\r\n";
//    request_str << "User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) "
//                << "Ubuntu Chromium/62.0.3202.75 Chrome/62.0.3202.75 Safari/537.36 " << "\r\n";
    request_str << "Content-Type: text/html\r\n";
    request_str << "Content-Length: 0\r\n";
    // 对于现在写的方法，这里必须设置为close，以配合HttpSocket中使用的select
    request_str << "Connection: close\r\n";
    request_str << "\r\n";

#if 0
    cout << endl;
    cout << "dump request string: " << endl;
    cout << request_str.str() << endl;
#endif

    request_return_ = HttpSocket(host, request_str.str());
    if(request_return_ == "") {
        cout << "Http Socket error!" << endl;
        return -1;
    }

    AnalyzeReturn();

    return 0;
}

// HTTP POST请求
int HttpGetPostMethod::HttpPost(std::string host, std::string path, std::string post_content)
{
    stringstream request_str;
    request_str << "POST " << path << " HTTP/1.1" << "\r\n";
    request_str << "Host: " << host << "\r\n";
//    request_str << "User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) "
//                << "Ubuntu Chromium/62.0.3202.75 Chrome/62.0.3202.75 Safari/537.36 " << endl;
    request_str << "Content-Type: application/x-www-form-urlencoded" << "\r\n";
    request_str << "Content-Length: " << post_content.length() << "\r\n";
    // 对于现在写的方法，这里必须设置为close，以配合HttpSocket中使用的select
    request_str << "Connection:close" << "\r\n";
    request_str << "\r\n";
    request_str << post_content;

#if 0
    cout << endl;
    cout << "dump request string: " << endl;
    cout << request_str.str() << endl;
#endif

    request_return_ = HttpSocket(host, request_str.str());
    if(request_return_ == "") {
        cout << "Http Post error!" << endl;
        return -1;
    }

    AnalyzeReturn();

    return 0;
}

std::string HttpGetPostMethod::HttpSocket(std::string host, std::string request_str)
{
    const unsigned int kBufferSize = 1024*1024;
    struct sockaddr_in server_addr;
    hostent *server_hostent = nullptr;
    int client_fd;
    char recv_buf[kBufferSize];
    char ip_str[32];
    bzero(recv_buf, kBufferSize);
    bzero(&server_addr, sizeof(sockaddr_in));
    bzero(ip_str, 32);
    int ret = 0;
    fd_set client_fd_set;
    stringstream result_string;
    int h = 0;

    // 根据host name获取host的ip地址
    server_hostent = gethostbyname(host.c_str());
    if(server_hostent == nullptr) {
        cout << "get host ip address error!" << endl;
        return "";
    }

    client_fd = socket(AF_INET, SOCK_STREAM, 0);
    if(client_fd < 0) {
        cout << "create socket fd error!" << endl;
        return "";
    }

    server_addr.sin_family = AF_INET;
    memcpy((char *)&server_addr.sin_addr.s_addr, (char *)*server_hostent->h_addr_list, server_hostent->h_length);
    server_addr.sin_port = htons(80);

    ret = connect(client_fd, (struct sockaddr *) &server_addr, sizeof(sockaddr_in));
    if(ret < 0) {
        cout << "connect to server error!" << endl;
        return "";
    }

    // 将POST或者GET请求发送出去
    ret = send(client_fd, request_str.c_str(), request_str.length(), 0);
    if(ret != request_str.length()) {
        cout << "Send request unfinish!" << endl;
        return "";
    }

    FD_ZERO(&client_fd_set);
    FD_SET(client_fd, &client_fd_set);

    while(1) {
        // HTTP请求返回的内容可能会分成几个Socket包，所以这里使用select方法，将返回的内容合并起来
        h = select(client_fd + 1, &client_fd_set, NULL, NULL, NULL);
        if(h == -1) {
            cout << "read select failed!" << endl;
            break;
        }
        if(FD_ISSET(client_fd, &client_fd_set)) {
            bzero(recv_buf, kBufferSize);
            ret = read(client_fd, recv_buf, kBufferSize);
            // 因为已经在请求中设置了‘connection:close’，所以这里肯定会返回的。
            if(ret == 0) {
                cout << "server has closed this connect!" << endl;
                break;
            }
            result_string << recv_buf;
        }
    }
    shutdown(client_fd, SHUT_RDWR);
    close(client_fd);

    return result_string.str();
}

string HttpGetPostMethod::get_request_return()
{
    return request_return_;
}

string HttpGetPostMethod::get_main_text()
{
    return main_text_;
}

int HttpGetPostMethod::get_return_status_code()
{
    return return_status_code_;
}

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#include "../include/HttpGetPostMethod.h"

#include <sys/socket.h>

#include <arpa/inet.h>

#include <unistd.h>

#include <sys/types.h>

#include <netinet/in.h>

#include <stdlib.h>

#include <string>

#include <cstring>

#include <netdb.h>

#include <sstream>

#include <sys/select.h>

#include <sys/time.h>

#include <sys/types.h>

#include <unistd.h>

using namespace std;

HttpGetPostMethod::HttpGetPostMethod() : return_status_code_(0), request_return_(""), main_text_("")

{

}

HttpGetPostMethod::~HttpGetPostMethod()

{

}

// 分解HTTP请求返回的数据

void HttpGetPostMethod::AnalyzeReturn(void)

{

size_t position1 = request_return_.find_first_of(" ", 0);

size_t position2 = request_return_.find(" ", position1+1);

return_status_code_ = atoi(request_return_.substr(position1+1, position2).c_str());

position1 = request_return_.find("\r\n\r\n", position2);

main_text_ = request_return_.substr(position1+4);

}

// HTTP GET请求

int HttpGetPostMethod::HttpGet(std::string host, std::string path, std::string get_content)

{

stringstream request_str;

request_str << "GET " << path << (path=="/" ? "" : "?") << get_content << " HTTP/1.1" << "\r\n";

request_str << "Host: " << host << "\r\n";

// request_str << "User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) "

// << "Ubuntu Chromium/62.0.3202.75 Chrome/62.0.3202.75 Safari/537.36 " << "\r\n";

request_str << "Content-Type: text/html\r\n";

request_str << "Content-Length: 0\r\n";

// 对于现在写的方法，这里必须设置为close，以配合HttpSocket中使用的select

request_str << "Connection: close\r\n";

request_str << "\r\n";

#if 0

cout << endl;

cout << "dump request string: " << endl;

cout << request_str.str() << endl;

#endif

request_return_ = HttpSocket(host, request_str.str());

if(request_return_ == "") {

cout << "Http Socket error!" << endl;

return -1;

}

AnalyzeReturn();

return 0;

}

// HTTP POST请求

int HttpGetPostMethod::HttpPost(std::string host, std::string path, std::string post_content)

{

stringstream request_str;

request_str << "POST " << path << " HTTP/1.1" << "\r\n";

request_str << "Host: " << host << "\r\n";

// request_str << "User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) "

// << "Ubuntu Chromium/62.0.3202.75 Chrome/62.0.3202.75 Safari/537.36 " << endl;

request_str << "Content-Type: application/x-www-form-urlencoded" << "\r\n";

request_str << "Content-Length: " << post_content.length() << "\r\n";

// 对于现在写的方法，这里必须设置为close，以配合HttpSocket中使用的select

request_str << "Connection:close" << "\r\n";

request_str << "\r\n";

request_str << post_content;

#if 0

cout << endl;

cout << "dump request string: " << endl;

cout << request_str.str() << endl;

#endif

request_return_ = HttpSocket(host, request_str.str());

if(request_return_ == "") {

cout << "Http Post error!" << endl;

return -1;

}

AnalyzeReturn();

return 0;

}

std::string HttpGetPostMethod::HttpSocket(std::string host, std::string request_str)

{

const unsigned int kBufferSize = 1024*1024;

struct sockaddr_in server_addr;

hostent *server_hostent = nullptr;

int client_fd;

char recv_buf[kBufferSize];

char ip_str[32];

bzero(recv_buf, kBufferSize);

bzero(&server_addr, sizeof(sockaddr_in));

bzero(ip_str, 32);

int ret = 0;

fd_set client_fd_set;

stringstream result_string;

int h = 0;

// 根据host name获取host的ip地址

server_hostent = gethostbyname(host.c_str());

if(server_hostent == nullptr) {

cout << "get host ip address error!" << endl;

return "";

}

client_fd = socket(AF_INET, SOCK_STREAM, 0);

if(client_fd < 0) {

cout << "create socket fd error!" << endl;

return "";

}

server_addr.sin_family = AF_INET;

memcpy((char *)&server_addr.sin_addr.s_addr, (char *)*server_hostent->h_addr_list, server_hostent->h_length);

server_addr.sin_port = htons(80);

ret = connect(client_fd, (struct sockaddr *) &server_addr, sizeof(sockaddr_in));

if(ret < 0) {

cout << "connect to server error!" << endl;

return "";

}

// 将POST或者GET请求发送出去

ret = send(client_fd, request_str.c_str(), request_str.length(), 0);

if(ret != request_str.length()) {

cout << "Send request unfinish!" << endl;

return "";

}

FD_ZERO(&client_fd_set);

FD_SET(client_fd, &client_fd_set);

while(1) {

// HTTP请求返回的内容可能会分成几个Socket包，所以这里使用select方法，将返回的内容合并起来

h = select(client_fd + 1, &client_fd_set, NULL, NULL, NULL);

if(h == -1) {

cout << "read select failed!" << endl;

break;

}

if(FD_ISSET(client_fd, &client_fd_set)) {

bzero(recv_buf, kBufferSize);

ret = read(client_fd, recv_buf, kBufferSize);

// 因为已经在请求中设置了‘connection:close’，所以这里肯定会返回的。

if(ret == 0) {

cout << "server has closed this connect!" << endl;

break;

}

result_string << recv_buf;

}

shutdown(client_fd, SHUT_RDWR);

close(client_fd);

return result_string.str();

}

string HttpGetPostMethod::get_request_return()

{

return request_return_;

}

string HttpGetPostMethod::get_main_text()

{

return main_text_;

}

int HttpGetPostMethod::get_return_status_code()

{

return return_status_code_;

}

上面的代码暂时就这样子处理了，使用方法也很简单，如下是使用一个易源数据的开放API查询基金相关的信息，大家也可以使用这个来试一试上面的代码：

#include <iostream>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <string>
#include <cstring>
#include <memory>

#include "include/HttpGetPostMethod.h"

int main()
{
    //shared_ptr<HttpGetPostMethod> http_request(new HttpGetPostMethod());
    shared_ptr<HttpGetPostMethod> http_request = make_shared<HttpGetPostMethod>();

    // 现在使用的是自己的API key，免费的所以频率只能是一秒钟一次，大家可以测试下
    int ret  = http_request->HttpGet("route.showapi.com", "/902-1", "showapi_appid=52875&showapi_sign=59c54e39583740bf9708c645c389c9ec&fundCode=519185&needDetails=1");
    if(ret == -1) {
        cout << "Http Socket error!" << endl;
    }
    if(http_request->get_return_status_code() != 200) {
        cout << "Http get status code was: " << http_request->get_return_status_code() << endl;
    }
    string request_return = http_request->get_request_return();
    string main_text = http_request->get_main_text();

    cout << "Return Status Code: " << http_request->get_return_status_code() << endl;
    cout << "Request Return: " << endl << request_return << endl;
    cout << "Main Text: " << endl << main_text << endl;


    sleep(5);

    ret = http_request->HttpGet("route.showapi.com", "/902-1", "showapi_appid=52875&showapi_sign=59c54e39583740bf9708c645c389c9ec&fundCode=000478&needDetails=1");

    if(ret == -1) {
        cout << "Http Socket error!" << endl;
    }
    if(http_request->get_return_status_code() != 200) {
        cout << "Http get status code was: " << http_request->get_return_status_code() << endl;
    }
    request_return = http_request->get_request_return();
    main_text = http_request->get_main_text();

    cout << "Return Status Code: " << http_request->get_return_status_code() << endl;
    cout << "Request return: " << endl << request_return << endl;
    cout << "Main Text: " << endl << main_text << endl;
}

#include <iostream>

#include <sys/socket.h>

#include <arpa/inet.h>

#include <unistd.h>

#include <sys/types.h>

#include <netinet/in.h>

#include <stdlib.h>

#include <string>

#include <cstring>

#include <memory>

#include "include/HttpGetPostMethod.h"

int main()

{

//shared_ptr<HttpGetPostMethod> http_request(new HttpGetPostMethod());

shared_ptr<HttpGetPostMethod> http_request = make_shared<HttpGetPostMethod>();

// 现在使用的是自己的API key，免费的所以频率只能是一秒钟一次，大家可以测试下

int ret = http_request->HttpGet("route.showapi.com", "/902-1", "showapi_appid=52875&showapi_sign=59c54e39583740bf9708c645c389c9ec&fundCode=519185&needDetails=1");

if(ret == -1) {

cout << "Http Socket error!" << endl;

}

if(http_request->get_return_status_code() != 200) {

cout << "Http get status code was: " << http_request->get_return_status_code() << endl;

}

string request_return = http_request->get_request_return();

string main_text = http_request->get_main_text();

cout << "Return Status Code: " << http_request->get_return_status_code() << endl;

cout << "Request Return: " << endl << request_return << endl;

cout << "Main Text: " << endl << main_text << endl;

sleep(5);

ret = http_request->HttpGet("route.showapi.com", "/902-1", "showapi_appid=52875&showapi_sign=59c54e39583740bf9708c645c389c9ec&fundCode=000478&needDetails=1");

if(ret == -1) {

cout << "Http Socket error!" << endl;

}

if(http_request->get_return_status_code() != 200) {

cout << "Http get status code was: " << http_request->get_return_status_code() << endl;

}

request_return = http_request->get_request_return();

main_text = http_request->get_main_text();

cout << "Return Status Code: " << http_request->get_return_status_code() << endl;

cout << "Request return: " << endl << request_return << endl;

cout << "Main Text: " << endl << main_text << endl;

}

Jimmy's Blog

Jimmy Chen

C++实现HTTP Get和Post请求

Get和Post请求的区别

Get方法

Post方法

比较 GET 与 POST

gethostbyname()函数说明

C++实现GET和POST请求

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本作品采用知识共享署名-相同方式共享 4.0 国际许可协议进行许可

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Jimmy Chen

Get和Post请求的区别

Get方法

Post方法

比较 GET 与 POST

gethostbyname()函数说明

C++实现GET和POST请求

赞过：

相关

本作品采用 知识共享署名-相同方式共享 4.0 国际许可协议 进行许可

发表回复 取消回复

本作品采用知识共享署名-相同方式共享 4.0 国际许可协议进行许可

发表回复取消回复