Libcurl的编译_HTTP/HTTPSclient源代码演示样例

时间 2019-11-13

标签 libcurl 编译 http httpsclient 源代码演示样例栏目 HTTP/TCP 繁體版

原文原文链接

HTTP/HTTPSclient源代码演示样例

环境: zlib-1.2.8 openssl-1.0.1g curl-7.36html

Author: Kagulajava

LastUpdateDate: 2016-05-09node

阅读前提：CMake工具的基本使用、配置openssl-1.0.1g 开发环境linux

编译zlib库

下载zlib-1.2.8.tar.gz并解压缩到" D:\SDK\zlib-1.2.8"，使用CMake工具生成zlib.sln。在Visual Studio2013中打开并编译就能够。ios

编译curl-7.36.0

若是Open SSL已经安装到“D:\SDK\openssl-1.0.1g”，先设置如下的环境变量chrome

OPENSSL_LIBRARIES=D:\SDK\openssl-1.0.1g\out32shell

OPENSSL_ROOT_DIR=D:\SDK\openssl-1.0.1gapache

从http://curl.haxx.se/下载curl-7.36.0.zip并解压缩到“D:\SDK\curl-7.36.0”启动CMake工具Configure，分别设置LIB_EAY_RELEASE和SSL_EAY_RELEASE变量为“D:\SDK\openssl-1.0.1g\out32\libeay32.lib”，“D:\SDK\openssl-1.0.1g\out32\ssleay32.lib”,产生sln文件后打开，为里面的curlproject项目加入“USE_MANUAL”宏定义，而后build里面的4个项目成功。vim

为项目加入连接库libcurl_imp.lib ，把libcurl.dll文件拷贝到C++项目路径下，不然程序执行会提示找不到动态连接库。windows

如下是HTTP/HTTPSclient演示样例

怎样使用

#include <iostream>
#include <string>

using namespace std;

#include "httpclient.h"

int main(int argc, char *argv[])
{
    string response;

    //login
    kagula::network::CHttpClient client;
    int nR = client.Post("https://lijun:8443/escortcashbox/main/login.do",
                         "data={\"version\":\"1.0.0.0\",\"user\":\"admin\",\"password\":\"123\"}",                         
                         response,true,
                         "d:\cookie.txt",
                         "D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/tomcat7.pem",
                         "D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/client_all.pem",
                         "123456");
    cout << nR << endl <<response << endl;

    //upload png file
    /*
    std::map<std::string,std::string> mapFields;
    std::map<std::string,std::vector<std::string>> mapFiles;
    mapFields["data"] = "{\"version\":\"1.0.0.0\",\"socialid\":\"1012\",\"realname\":\"realnamevalue\",\"portrait\":\"protraitvalue\",\"fingerid\":\"fingeridvalue\",\"groupid\":\"123\"}";
    std::vector<std::string> vecFile(2);
    vecFile[0] = "d:\\b.png";
    vecFile[1] = "image/png";
    mapFiles["portraitFile"] = vecFile;
    nR = client.MultipartFormdata("https://lijun:8443/escortcashbox/main/escortStaffAdd.do",
                                  mapFields,mapFiles,
                                  response,
                                  "d:\cookie.txt",
                                  "D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/tomcat7.pem",
                                  "D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/client_all.pem",
                                  "123456");

    cout << nR << endl << response << endl;
*/
    //download png file
    nR = client.GetFile("https://lijun:8443/escortcashbox/upload/img/20160527_110514_679_426.png",
                        "d:/ee.png",
                        "d:\cookie.txt",
                        "D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/tomcat7.pem",
                        "D:/workspace_qt/build-escortcashbox_c-Mingw32-Debug/debug/client_all.pem",
                        "123456");
    cout << nR << endl;

    return 0;
}

HttpClient.h封装好的头文件

//HttpClient.h源码清单
#ifndef _HTTPCLIENT_H_
#define _HTTPCLIENT_H_

#include <string>
#include <map>
#include <vector>

/*
Title: Get Response from Web Server by HTTP/HTTPS method.
Environment:
Windows 7SP1, Windows 8.1, Windows 10
QT Creator 3.5.1, Visual Studio 2013 Update1, Visual Studio 2013 Update5
libcurl 7.36.0, libcurl 7.46.0, Qt 5.6, MSYS2 64bits gcc 5.3.0
Last Update: 2016-05-27
Remark:
[1]假设要在多线程方式下同一时候调用多个CHttpClient实例。
 需要在App初始化的时候调用kagula::network::Init();
 在App结束的时候调用kagula::network::Cleanup();
[2]编译libcurl必须打开zlib标志。并且把OpenSSL也链进去。

Reference:
curl_eay_setopt manual
http://www.helplib.net/s/linux.die/65_2740/man-3-curl-easy-setopt.shtml
C++ cout format
http://www.cnblogs.com/devymex/archive/2010/09/06/1818754.html
*/

namespace kagula
{
    namespace network
    {
        void Init();
        void Cleanup();

        class CHttpClient
        {
        public:
            CHttpClient(void);
            ~CHttpClient(void);

        public:
            /**
            * @brief HTTP/HTTPS POST/GET请求
            * @param strUrl 输入參数,请求的Url地址,如:https://www.alipay.com
            * @param strPost 输入參数,使用例如如下格式para1=val1¶2=val2&…
            * @param strCookie 输入參数,Cookie文件名称，好比 d:\temp\cookie.txt
            *                          假设为空，不启用Cookie.
            * @param strResponse 输出參数,返回的内容
            * @param bPost 是否Post方式发送请求，默认Post方式发送请求。
            * @param pCaPath 输入參数,为CA证书的路径.假设输入为NULL,则不验证server端证书的有效性.
            * @param pClientCalPath 输入參数，为client证书的路径.假设输入为NULL,则不验证client证书的有效性.
            * @param pClientCalPassword 输入參数，为client证书的存取password.
            * @return 返回是否Post成功
            * 0  成功
            * 7  没法链接
            * 28 超时
            * 58 服务端验证client证书失败。
            * 60 client验证服务端证书失败。
            */
            int Post(const char* pUrl,
                     const char* pPost,
                     std::string &strResponse,
                     bool bPost,
                     const char* pCookie,
                     const char* pCaPath = NULL,
                     const char* pClientCalPath = NULL,
                     const char* pClientCalPassword = NULL);

            int MultipartFormdata(const char *pUrl,
                                  const std::map<std::string,std::string> & mapFields,
                                  const std::map<std::string,std::vector<std::string>> & mapFiles,
                                  std::string & strResponse,
                                  const char *pCookie,
                                  const char * pCaPath = NULL,
                                  const char * pClientCalPath = NULL,
                                  const char * pClientCalPassword = NULL);

            int GetFile(const char* pUrl,
                        const char* pLocalFullPath,
                        const char* pCookie,
                        const char* pCaPath = NULL,
                        const char* pClientCalPath = NULL,
                        const char* pClientCalPassword = NULL);
        public:
            void SetDebug(bool bDebug);
            std::string getMsgInChinese(int code);

        private:
            bool m_bDebug;

            bool PrintCookies(void* curl, std::string& strOut);
        };
    }
}
#endif

源文件清单

//HttpClient.cpp源码清单
#include "HttpClient.h"
#include <iostream>
#include <curl/curl.h>
#include <iomanip>
#include <sstream>

#ifdef WIN32
#pragma comment(lib,"libcurl_imp.lib")
#endif

namespace kagula
{
    namespace network
    {
        CHttpClient::CHttpClient(void) :
            m_bDebug(false)
        {

        }

        CHttpClient::~CHttpClient(void)
        {

        }

        bool CHttpClient::PrintCookies(void* curl, std::string& strOut)
        {
            std::ostringstream ostr;

            CURLcode res;
            struct curl_slist *cookies;

            res = curl_easy_getinfo(curl, CURLINFO_COOKIELIST, &cookies);
            if (res != CURLE_OK) {

                ostr << "Curl curl_easy_getinfo failed:" << curl_easy_strerror(res) << std::endl;
                strOut = ostr.str();
                return false;
            }
            const struct curl_slist *nc = cookies;
            int i = 1;
            ostr << "Cookies, curl knows:" << std::endl;
            while (nc) {
                ostr << "[" << i++ << "]: " << nc->data << std::endl;
                nc = nc->next;
            }

            return true;
        }

        static int OnDebug(CURL *, curl_infotype itype, char * pData, size_t size, void *)
        {
            if (itype == CURLINFO_TEXT)
            {
                //printf("[TEXT]%s\n", pData);
            }
            else if (itype == CURLINFO_HEADER_IN)
            {
                printf("[HEADER_IN]%s\n", pData);
            }
            else if (itype == CURLINFO_HEADER_OUT)
            {
                printf("[HEADER_OUT]%s\n", pData);
            }
            else if (itype == CURLINFO_DATA_IN)
            {
                printf("[DATA_IN]%s\n", pData);
            }
            else if (itype == CURLINFO_DATA_OUT)
            {
                printf("[DATA_OUT]%s\n", pData);
            }
            return 0;
        }

        size_t OnWriteData_Post(void* buffer, size_t size, size_t nmemb, void* lpVoid)
        {
            std::string* str = reinterpret_cast<std::string*>(lpVoid);
            if (NULL == str || NULL == buffer)
            {
                return -1;
            }

            char* pData = reinterpret_cast<char*>(buffer);
            str->append(pData, size * nmemb);
            return nmemb;
        }

        size_t OnWriteData_MultipartFormdata( void *inBuffer, size_t size, size_t nmemb, void *outBuffer )
        {
            int len = size * nmemb;
            char *temp = new char[len+1];
            memcpy(temp,inBuffer,len);
            temp[len]=0;
            reinterpret_cast<std::string *>(outBuffer)->append(temp);
            delete temp;
            return len;
        }

        size_t OnWriteData_GetFile(void *inBuffer, int size, int nmemb, std::string &content)
        {
            long len = size * nmemb;
            std::string temp((char *)inBuffer, len);
            content += temp;
            return len;
        }

        std::string CHttpClient::getMsgInChinese(int code)
        {
            switch(code)
            {
            case 0:
                return "通信成功";
            case 7:
                return "server链接失败。";
            case 28:
                return "链接超时。";
            case 58:
                return "服务端验证client证书失败。";
            case 60:
                return "client验证服务端证书失败。
";
            default:
                return "";
            }
        }

        int CHttpClient::Post(const char* pUrl,
                              const char* pPost,
                              std::string & strResponse,
                              bool bPost,
                              const char* pCookie,
                              const char* pCaPath,
                              const char* pClientCalPath,
                              const char* pClientCalPassword)
        {
            strResponse = "";


            CURLcode res;
            CURL* curl = curl_easy_init();
            if (NULL == curl)
            {
                return CURLE_FAILED_INIT;
            }
            if (m_bDebug)
            {
                curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
                curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, OnDebug);
            }
            curl_easy_setopt(curl, CURLOPT_URL, pUrl);
            if(bPost)
            {
                curl_easy_setopt(curl, CURLOPT_POST, 1);
                curl_easy_setopt(curl, CURLOPT_POSTFIELDS, pPost);
            }
            curl_easy_setopt(curl, CURLOPT_READFUNCTION, NULL);
            curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, OnWriteData_Post);
            curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&strResponse);
            curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);

            if (pCookie!=0)
            {
                curl_easy_setopt(curl, CURLOPT_COOKIEFILE, (void *)pCookie);
                curl_easy_setopt(curl, CURLOPT_COOKIEJAR, (void *)pCookie);
            }

            if (NULL == pCaPath)
            {
                curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, false);
                curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, false);

                //需要在编译curl的时候，一同编译zlib标志。要否则找不到这个标志.
                //固然前提是你已经编译完毕zlib.
                //发出接受gzip压缩内容的请求，假设server支持gzip内容，会返回压缩后的数据。
                //假设Httpserver不支持gzip encoding也不影响libcurl正常工做。

                //接受数据的时候，假设返回的是压缩数据，libcurl会本身主动解压数据。

                curl_easy_setopt(curl, CURLOPT_ACCEPT_ENCODING, "gzip");
            }
            else
            {
                //缺省状况就是PEM，因此无需设置。另外支持DER
                //curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE,"PEM");
                curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, true);
                curl_easy_setopt(curl, CURLOPT_CAINFO, pCaPath);

                //服务端需要认证client的真实性，即双向认证。
                if(pClientCalPath!=NULL)
                {
                    curl_easy_setopt(curl,CURLOPT_SSLCERT, pClientCalPath);
                    curl_easy_setopt(curl,CURLOPT_SSLCERTPASSWD, pClientCalPassword);
                    curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE, "PEM");
                    curl_easy_setopt(curl,CURLOPT_SSLKEY, pClientCalPath);
                    curl_easy_setopt(curl,CURLOPT_SSLKEYPASSWD, pClientCalPassword);
                    curl_easy_setopt(curl,CURLOPT_SSLKEYTYPE, "PEM");
                }
            }            
            //
            curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 3);
            curl_easy_setopt(curl, CURLOPT_TIMEOUT, 3);

            //Webserver一般会重定向连接。比方訪问http:/xxx/x1.do本身主动转到http:/xxx/x2.do
            //因此必定要设置CURLOPT_FOLLOWLOCATION为1,不然重定向后的数据不会返回。

            curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION,1);

            res = curl_easy_perform(curl);
            curl_easy_cleanup(curl);
            return res;
        }


        int CHttpClient::MultipartFormdata(const char *pUrl,
                              const std::map<std::string,std::string> & mapFields,
                              const std::map<std::string,std::vector<std::string>> & mapFiles,
                              std::string & strResponse,
                              const char *pCookie,const char * pCaPath,
                              const char * pClientCalPath,const char * pClientCalPassword)
        {
            CURL *curl;
            CURLcode res;

            curl = curl_easy_init();
            strResponse ="";

            curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, OnWriteData_MultipartFormdata);//write_data
            curl_easy_setopt(curl, CURLOPT_WRITEDATA, &strResponse);

            struct curl_httppost *formpost = 0;
            struct curl_httppost *lastptr  = 0;

            //
            std::map<std::string,std::string>::const_iterator iterFields = mapFields.begin();
            while(iterFields!=mapFields.end())
            {
                //curl_formadd(&formpost, &lastptr,CURLFORM_COPYNAME,"data",CURLFORM_COPYCONTENTS, pData,CURLFORM_END);
                curl_formadd(&formpost, &lastptr,CURLFORM_COPYNAME,iterFields->first.c_str(),
                             CURLFORM_COPYCONTENTS, iterFields->second.c_str(),CURLFORM_END);
                iterFields++;
            }

            std::map<std::string,std::vector<std::string>>::const_iterator iterFiles = mapFiles.begin();
            while(iterFiles!=mapFiles.end())
            {
                //"image/jpeg","image/png"
                //curl_formadd(&formpost, &lastptr,CURLFORM_PTRNAME, "portraitFile", CURLFORM_FILE, pImageFileName,CURLFORM_CONTENTTYPE, "image/png", CURLFORM_END);
                curl_formadd(&formpost, &lastptr,CURLFORM_PTRNAME,
                             iterFiles->first.c_str(), CURLFORM_FILE,
                             iterFiles->second[0].c_str(),CURLFORM_CONTENTTYPE,
                             iterFiles->second[1].c_str(), CURLFORM_END);
                iterFiles++;
            }


            //
            curl_easy_setopt(curl, CURLOPT_URL, pUrl);
            curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);

            if (pCookie!=0)
            {
                curl_easy_setopt(curl, CURLOPT_COOKIEFILE, (void *)pCookie);
                curl_easy_setopt(curl, CURLOPT_COOKIEJAR, (void *)pCookie);
            }

            //单向认证用
            if(pCaPath!=0)
            {
                curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, true);
                curl_easy_setopt(curl, CURLOPT_CAINFO, pCaPath);
            }

            //服务端需要认证client的真实性。即双向认证。
            if(pClientCalPath!=0 && pClientCalPassword!=0)
            {
                curl_easy_setopt(curl,CURLOPT_SSLCERT, pClientCalPath);
                curl_easy_setopt(curl,CURLOPT_SSLCERTPASSWD, pClientCalPassword);
                curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE, "PEM");
                curl_easy_setopt(curl,CURLOPT_SSLKEY, pClientCalPath);
                curl_easy_setopt(curl,CURLOPT_SSLKEYPASSWD, pClientCalPassword);
                curl_easy_setopt(curl,CURLOPT_SSLKEYTYPE, "PEM");
            }

            res = curl_easy_perform(curl);
            curl_easy_cleanup(curl);

            curl_formfree(formpost);
            return res;
        }

        int CHttpClient::GetFile(const char* pUrl,
                    const char* pLocalFullPath,
                    const char* pCookie,
                    const char* pCaPath,
                    const char* pClientCalPath,
                    const char* pClientCalPassword)
        {
            CURL *curl = NULL;
            CURLcode code;
            char bufError[CURL_ERROR_SIZE];
            std::string content;
            long retcode = 0;

            code = curl_global_init(CURL_GLOBAL_DEFAULT);
            if (code != CURLE_OK)
            {
                //printf("Failed to global init default [%d]\n", code);
                return -100;
            }

            curl = curl_easy_init();
            if (curl == NULL)
            {
                //printf("Failed to create CURL connection\n");
                return -200;
            }
            code = curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, bufError);
            if (code != CURLE_OK)
            {
                //printf("Failed to set error buffer [%d]\n", code);
                return code;
            }
            //curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
            code = curl_easy_setopt(curl, CURLOPT_URL, pUrl);
            if (code != CURLE_OK)
            {
                //printf("Failed to set URL [%s]\n", error);
                goto _END;
            }
            code = curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
            if (code != CURLE_OK)
            {
                //printf("Failed to set redirect option [%s]\n", error);
                goto _END;
            }
            code = curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, OnWriteData_GetFile);
            if (code != CURLE_OK)
            {
                //printf("Failed to set writer [%s]\n", error);
                goto _END;
            }
            code = curl_easy_setopt(curl, CURLOPT_WRITEDATA, &content);
            if (code != CURLE_OK)
            {
                //printf("Failed to set write data [%s]\n", error);
                goto _END;
            }

            if (pCookie!=0)
            {
                curl_easy_setopt(curl, CURLOPT_COOKIEFILE, (void *)pCookie);
                curl_easy_setopt(curl, CURLOPT_COOKIEJAR, (void *)pCookie);
            }

            //单向认证用
            if(pCaPath!=0)
            {
                curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, true);
                curl_easy_setopt(curl, CURLOPT_CAINFO, pCaPath);
            }

            //服务端需要认证client的真实性。即双向认证。
            if(pClientCalPath!=0 && pClientCalPassword!=0)
            {
                curl_easy_setopt(curl,CURLOPT_SSLCERT, pClientCalPath);
                curl_easy_setopt(curl,CURLOPT_SSLCERTPASSWD, pClientCalPassword);
                curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE, "PEM");
                curl_easy_setopt(curl,CURLOPT_SSLKEY, pClientCalPath);
                curl_easy_setopt(curl,CURLOPT_SSLKEYPASSWD, pClientCalPassword);
                curl_easy_setopt(curl,CURLOPT_SSLKEYTYPE, "PEM");
            }

            code = curl_easy_perform(curl);
            if (code != CURLE_OK)
            {
                //printf("Failed to get '%s' [%s]\n", URL, error);
                goto _END;
            }

            code = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &retcode);
            if ((code == CURLE_OK) && retcode == 200)
            {
                double length = 0;
                code = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &length);
                //printf("%d", retcode);
                FILE * file = fopen(pLocalFullPath, "wb");
                fseek(file, 0, SEEK_SET);
                fwrite(content.c_str(), 1, (size_t)length, file);
                fclose(file);

                code =  CURLE_OK;
                goto _END;
            }
        _END:
            curl_easy_cleanup(curl);

            return code;
        }

        ///////////////////////////////////////////////////////////////////////////////////////////////
        void CHttpClient::SetDebug(bool bDebug)
        {
            m_bDebug = bDebug;
        }

        void Init()
        {
            //the function is not thread safe.
            curl_global_init(CURL_GLOBAL_ALL);
        }

        void Cleanup()
        {
            curl_global_cleanup();
        }
    }
}

注意：

[1]MSys64 Mingw32 QtCreator 32位C++程序配置libcurl
若是Msys64是安装在C盘默认路径上
第一步：在Msys64中查询可用的curl包
pacman -Ss curl

第二步：安装
pacman -S mingw-w64-i686-curl

第三步：在.pro文件下增长如下的代码
LIBS += C:\msys64\mingw32\lib\libcurl.dll.a
INCLUDEPATH += C:\msys64\mingw32\include
最后：编译连接依赖libcurl的项目成功。

[2]怎样产生cer文件

https原理及tomcat配置https方法
http://jingyan.baidu.com/article/a948d6515d3e850a2dcd2ee6.html

[3]单向认证。让client信任服务端证书

第一步：
双击从服务端keystore中导出的cer文件可以导入证书。
windows下“certmgr.msc”命令可以进入证书管理。
本身制做的证书导入到Win7后默认在“中级证书颁发机构”->“证书”节点里。

第二步：
需要把你作的证书拖到“受信任的根证书颁发机构”->“证书”节点中去，不然
浏览器会提醒“此站点出具的安全证书不是由受信任的证书颁发机构颁发的”等相似错误。
chrome需要从新启动。IE直接刷新页面。就不会出现警告了。

注意：
数字证书转换cer---pem
在Msys2 Shell中确保安装好openssl.
在Msys2 Shell中使用openssl命令后进入openssl提示符。输入如下的命令
x509 -inform der -in d:/MyServerSecurity/tomcat7.cer -out d:/MyServerSecurity/tomcat7.pem

[4]双向认证。让服务端信任client的证书

至关于“Https单向认证”，加入了“服务端验证client身份真实性”的动做。

需要注意的是：服务端的密钥库參数“CN”必须与服务端的IP地址一样，不然会报错，client的随意。
假设服务端的CN为lijun，则client不能为lijun。即这两个不能是同一个名字。

第一步：client生成证书（用于服务端验证client）
keytool -validity 365 -genkeypair -v -alias kagula -keyalg RSA -storetype PKCS12 -keystore D:\MyClientSecurity\kagulakey.p12 -storepass 123456 -keypass 123456
kagula为证书的名称，D:\MyClientSecurity\kagulakey.p12证书的存放位置。

第二步：证书格式转为cer文件。
keytool -export -v -alias kagula -keystore D:\MyClientSecurity\kagulakey.p12 -storetype PKCS12 -storepass 123456 -rfc -file D:\MyClientSecurity\kagulakey.cer
kagula为证书的名称。D:\MyClientSecurity\kagulakey.p12证书的存放位置。123456证书password，D:\MyClientSecurity\kagulakey.cer导出的文件。

第三步：加入到（或新建）一个keystore文件
keytool -import -v -alias kagula -file D:\MyClientSecurity\kagulakey.cer -keystore D:\MyServerSecurity\tomcat7_client.keystore -storepass 123456
tomcat7_client.keystore假设不存在就会新建一个keystore，假设存在会加入到已经存在的keystore中。

第四步：查看keystore文件里的内容
keytool -list -keystore D:\MyServerSecurity\tomcat7_client.keystore

第五步：改动tomcat7中的server.xml文件
原单向认证的配置例如如下
<Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol"
maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS"
keystoreFile="D:\\MyServerSecurity\\tomcat7.keystore" keystorePass="123456"/>

现在改动后。例如如下
<Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol"
maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
clientAuth="true" sslProtocol="TLS"
keystoreFile="D:\\MyServerSecurity\\tomcat7.keystore" keystorePass="123456"
truststoreFile="D:\\MyServerSecurity\\tomcat7_client.keystore" truststorePass="123456"/>
加入了最后一行属性使它指向客户端证书，并把clientAuth属性从false改成true。

第六步（可选）：
Step6-1:
測试Windows下的Chrome是否还能訪问server，果真刷新浏览器后
“https://lijun:8443/escortcashbox/main/aboutUs.do”返回错误信息
Step6-2:
測试libcurl是否还能訪问server。现在libcurl返回7（没法链接server）的错误信息。

最后一步-让Windows下的Chrome和IE能訪问服务端：
双击D:\MyClientSecurity\kagulakey.p12文件，“不需要加入到受信任的根证书机构”结点。直接导入证书就能够。
默认在certmgr.msc命令，“我的”->“证书”节点下。

最后一步-让libcurl能訪问服务端：
使用msys64打开openssl命令行工具
#client我的证书的公钥
openssl>pkcs12 -in D:\MyClientSecurity\myclientkey.p12 -out D:\MyClientSecurity\client_publickey.pem -nokeys
或许假设在当前command shell下能找到openssl.exe也可以用如下的命令
“openssl pkcs12 -in D:\MyClientSecurity\myclientkey.p12 -out D:\MyClientSecurity\client_publickey.pem -nokeys”

#client我的证书的私钥
openssl pkcs12 -in D:\MyClientSecurity\myclientkey.p12 -out D:\MyClientSecurity\client_privatekey.pem -nocerts -nodes

#也可以转换为公钥与私钥合二为一的文件； client公钥与私钥，一块儿存在all.pem中
openssl>pkcs12 -in D:\MyClientSecurity\kagulakey.p12 -out D:\MyClientSecurity\client_all.pem -nodes

１、使用client_publickey.pem + client_privatekey.pem (未在win console shell下測试)
curl -k --cert client_publickey.pem --key D:\MyClientSecurity\client_privatekey.pem https://lijun:8443/escortcashbox/main/aboutUs.do

二、可以在Msys64 Shell中运行curl命令（假设已经安装了curl）...使用all.pem
curl -k --cert /d/MyClientSecurity/client_all.pem https://lijun:8443/escortcashbox/main/aboutUs.do

如下是双向认证的參考资料
SSL——Secure Sockets Layer
http://www.blogjava.net/icewee/archive/2012/06/04/379947.html

补充阅读资料

使用libcurl实现上传文件到FTPserver

http://blog.csdn.net/lee353086/article/details/5823145

使用libcurl下载http://www.baidu.com/img/baidu.gif演示样例

http://www.cppblog.com/qiujian5628/archive/2008/06/28/54873.html

libcurl的使用总结（一）

http://www.vimer.cn/2010/03/libcurl%E7%9A%84%E4%BD%BF%E7%94%A8%E6%80%BB%E7%BB%93%EF%BC%88%E4%B8%80%EF%BC%89.html

PHP的curl实现get。post 和 cookie

http://www.tsingpost.com/articles/201403/525.html