解析十六进制雷达数据格式：解析雷达数据长度。

以Cat62格式雷达数据为例，十六进制雷达数据部分代码：

3e0120bf7da4ffee0085

雷达数据长度使用4个字符（2个字节）标识，在这里是“0120”，转换为十进制数为288。

雷达数据长度父类：

base_length_processor.h

//
// Created by qiaowei on 2024-02-02.
//#ifndef RADARDATACONTROLLER_BASE_LENGTH_PROCESSOR_H
#define RADARDATACONTROLLER_BASE_LENGTH_PROCESSOR_H#include <QString>namespace processor {class BaseLengthProcessor {public:virtual int processor(const QString& track_data,int begin_position_index,int& readed_data_end_position) = 0;};} // processor#endif //RADARDATACONTROLLER_BASE_LENGTH_PROCESSOR_H

cat_62_length_processor.h

//
// Created by qiaowei on 2024-02-02.
//#ifndef RADARDATACONTROLLER_CAT_62_LENGTH_PROCESSOR_H
#define RADARDATACONTROLLER_CAT_62_LENGTH_PROCESSOR_H#include <QObject>
#include <QString>#include "../baseprocess/base_length_processor.h"namespace processor {class Cat62LengthProcessor : public QObject, public BaseLengthProcessor {public:explicit Cat62LengthProcessor(QObject* parent = nullptr);virtual ~Cat62LengthProcessor() override;/*** @author  qiao wei* @brief   获取Cat62格式雷达数据长度。返回值单位为字节（注意字符串中字节与字符索引区别）。* @param   track_data 雷达数据。* @param   begin_position 雷达数据中保存雷达长度的字符串首字符索引。* @param   readed_data_end_position 雷达数据中保存雷达长度的字符串末字符索引。* @return  返回该雷达数据的字节数量。雷达数据不完整时返回-1。* @history*/virtual int processor(const QString& track_data,int begin_position,int& readed_data_end_position) override;};} // processor#endif //RADARDATACONTROLLER_CAT_62_LENGTH_PROCESSOR_H

cat_62_length_processor.cpp

//
// Created by qiaowei on 2024-02-02.
//#include "cat_62_length_processor.h"namespace processor {Cat62LengthProcessor::Cat62LengthProcessor(QObject* parent) : QObject(parent) {}Cat62LengthProcessor::~Cat62LengthProcessor() {}int Cat62LengthProcessor::processor(const QString& track_data,int begin_position,int& readed_data_end_position) {// 初始化索引。长度项初始位索引赋值给长度项末尾索引。readed_data_end_position = begin_position;// 读取雷达数据的字节长度。字节长度为字符长度的一半。保存雷达数据长度的字符有4个，2个字节。const int track_data_length{track_data.mid(begin_position, 4).toInt(nullptr, 16)};// 雷达数据中数据长度项最后一位字符的索引。readed_data_end_position = begin_position + 4 - 1;if (track_data_length == track_data.length() / 2) {return track_data_length;} else {// 雷达数据不完整返回-1。return -1;}}} // processor

main.cpp

#include <string>#include <QApplication>
#include <QVector>
#include <QtDebug>
#include <QString>#include "./form/main_window.h"
#include "./cat62process/cat62_fspec_processor.h"
#include "./cat62process/cat_62_length_processor.h"
#include "./cat62process/cat_62_header_processor.h"using std::string;using form::MainWindow;
using processor::Cat62FspecProcessor;
using processor::Cat62HeaderProcessor;
using processor::Cat62LengthProcessor;int main(int argc,char *argv[]) {QApplication a(argc, argv);//    MainWindow* main_window{new MainWindow{nullptr}};
//    main_window->show();QString content = "3e0120bf7da4ffee0085988";int begin_position{0};int end_position = begin_position;Cat62HeaderProcessor* header_processor{new Cat62HeaderProcessor{}};qDebug()<< header_processor->processor(content, begin_position, end_position);begin_position = end_position + 1;Cat62LengthProcessor* lenght_processor{new Cat62LengthProcessor{}};qDebug()<< lenght_processor->processor(content, begin_position, end_position);begin_position = end_position + 1;Cat62FspecProcessor* fspec_processor{new Cat62FspecProcessor{}};QVector<int>* vector = fspec_processor->processor(content, begin_position, end_position);for (int index = 0; index < vector->capacity(); ++index) {qDebug()<< index << ": " << vector->at(index) << ", ";}int i{20};return QApplication::exec();
}

运行结果：