企业官网建设流程全解析

一、硬件连接与SOPAS连接测距仪

首先硬件设备连接如下：
电源厂家应该是不提供，需要自行解决。

安装完成后需要使用sick的SOPAS软件进行配置：
1、通过软件更改设备IP
2、从设备导入
3、读取数据
4、点击“离线”按钮，切换为在线状态

具体请按照这篇文章来连接

二、从SOPAS读取数据

连接成功后如下图：

双击设备进入设备页面，如下：


这两位就是十六进制的距离信息，可以自行转换为十进制数，与测距仪表面显示屏上的十进制数字进行对比。

三、通过JSON获取数据

分别使用Python和C++来实现了：

1. 使用Postman测试接口

其中：

{ "header": { "portNumber": 0 }, "data": { "processData": "in" } }

获取到如下内容表示成功

{ "header": { "status": 0, "message": "ok" }, "data": { "processDataIn": [ 0, 0, 123, 212, 252, 1 ], "isValid": true } }

2. 通过代码实现

1、C++代码如下：

#include<windows.h>#include<winhttp.h>#include<iostream>#include<string>#include<vector>#include"nlohmann/json.hpp"#pragmacomment(lib,"winhttp.lib")using json=nlohmann::json;HINTERNETOpenSession(constwchar_t*userAgent){HINTERNET hSession=WinHttpOpen(userAgent,WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,WINHTTP_NO_PROXY_NAME,WINHTTP_NO_PROXY_BYPASS,0);if(!hSession){std::cerr<<"Failed to open WinHTTP session."<<std::endl;}returnhSession;}std::stringSendPostRequest(HINTERNET hSession,constwchar_t*serverName,constwchar_t*path,conststd::string&postData){HINTERNET hConnect=WinHttpConnect(hSession,serverName,INTERNET_DEFAULT_HTTP_PORT,0);if(!hConnect){std::cerr<<"Failed to connect to server."<<std::endl;return"";}HINTERNET hRequest=WinHttpOpenRequest(hConnect,L"POST",path,NULL,WINHTTP_NO_REFERER,WINHTTP_DEFAULT_ACCEPT_TYPES,0);if(!hRequest){std::cerr<<"Failed to open request."<<std::endl;WinHttpCloseHandle(hConnect);return"";}constwchar_t*headers=L"Content-Type: application/json";DWORD dwBytesSent=0;if(!WinHttpSendRequest(hRequest,headers,-1L,(LPVOID)postData.c_str(),postData.size(),postData.size(),0)){std::cerr<<"Failed to send request."<<std::endl;WinHttpCloseHandle(hRequest);WinHttpCloseHandle(hConnect);return"";}if(!WinHttpReceiveResponse(hRequest,NULL)){std::cerr<<"Failed to receive response."<<std::endl;WinHttpCloseHandle(hRequest);WinHttpCloseHandle(hConnect);return"";}std::string response;DWORD dwSize=0;DWORD dwDownloaded=0;LPSTR pszOutBuffer;do{dwSize=0;if(!WinHttpQueryDataAvailable(hRequest,&dwSize)){std::cerr<<"Failed to query data available."<<std::endl;break;}pszOutBuffer=newchar[dwSize+1];if(!pszOutBuffer){std::cerr<<"Memory allocation failed."<<std::endl;break;}ZeroMemory(pszOutBuffer,dwSize+1);if(!WinHttpReadData(hRequest,(LPVOID)pszOutBuffer,dwSize,&dwDownloaded)){std::cerr<<"Failed to read data."<<std::endl;}else{response.append(pszOutBuffer,dwDownloaded);}delete[]pszOutBuffer;}while(dwSize>0);WinHttpCloseHandle(hRequest);WinHttpCloseHandle(hConnect);returnresponse;}intmain(){HINTERNET hSession=OpenSession(L"MyAppName/1.0");if(!hSession){return1;}constwchar_t*serverName=L"169.254.102.101";constwchar_t*path=L"/iolink/sickv1/readPort";json payload={{"header",{{"portNumber",0}}},{"data",{{"processData","in"}}}};std::string postData=payload.dump();std::string response=SendPostRequest(hSession,serverName,path,postData);if(!response.empty()){try{json data=json::parse(response);constjson processDataIn=data.at("data").at("processDataIn");if(processDataIn.size()>=4){intthirdData=processDataIn[2].get<int>();intfourthData=processDataIn[3].get<int>();std::cout<<"Third data: "<<thirdData<<std::endl;std::cout<<"Fourth data: "<<fourthData<<std::endl;}else{std::cout<<"Response does not contain enough data."<<std::endl;}}catch(conststd::exception&e){std::cerr<<"Failed to parse JSON response: "<<e.what()<<std::endl;}}else{std::cerr<<"Request failed."<<std::endl;}WinHttpCloseHandle(hSession);return0;}

注意，nlohmann/json.hpp需要自行去github上把nlohmann下载下来，然后去包含目录导入。

python比较简单：

importrequests# 定义请求的URL和请求体url="http://192.168.0.20/iolink/sickv1/readPort"payload={"header":{"portNumber":0},"data":{"processData":"in"}}# 发送POST请求response=requests.post(url,json=payload)# 检查请求是否成功ifresponse.status_code==200:# 解析返回的JSON数据data=response.json()# 获取processDataIn列表process_data_in=data.get('data',{}).get('processDataIn',[])# 检查列表长度是否足够iflen(process_data_in)>=4:# 获取第3和第4个数据（索引为2和3）third_data=process_data_in[2]fourth_data=process_data_in[3]print(f"Third data:{third_data}")print(f"Fourth data:{fourth_data}")else:print("Response does not contain enough data.")else:print(f"Request failed with status code:{response.status_code}")

运行结果：

即为所求