[Error] sstream: No such file or directory

你遇到的问题是"[Error sstream: No such file or directory"。这个错误表示你的代码中找不到头文件sstream.h。根据引用中提到的信息，你需要删除代码中包含的旧iostream头文件（例如sstream.h）并添加新的标准C++ iostream头文件（例如&lt;sstream&gt;）。请确保你的代码中正确地引用了sstream头文件，这样就能解决这个错误了。<em>1</em><em>2</em><em>3</em>
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- *1* *2* *3* [无法打开包含文件:“fstream.h”](https://blog.csdn.net/zzjxiaozi/article/details/8508855)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}} ] [.reference_item]
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相关问题

/home/txp/petalinux/2022.1/sysroots/x86_64-petalinux-linux/usr/bin/aarch64-xilinx-linux/aarch64-xilinx-linux-g++ -c -Iinclude -I../UsageEnvironment/include -I../groupsock/include -I/usr/local/include -I. -O2 -DSOCKLEN_T=socklen_t -DNO_SSTREAM=1 -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64 -Wall -DBSD=1 Media.cpp cc1plus: warning: include location "/usr/local/include" is unsafe for cross-compilation [-Wpoison-system-directories] In file included from ../UsageEnvironment/include/UsageEnvironment.hh:28, from include/Media.hh:33, from Media.cpp:21: ../groupsock/include/NetCommon.h:94:10: fatal error: sys/types.h: No such file or directory 94 | #include <sys/types.h> | ^~~~~~~~~~~~~

根据错误提示，编译器找不到 sys/types.h 文件，可能是因为交叉编译环境缺少相关的头文件和库文件。

解决这个问题的方法是在交叉编译环境中安装缺少的库文件和头文件。具体方法如下：

1. 在宿主机上下载对应版本的交叉编译工具链，并将其解压到某个目录下。

2. 进入解压后的工具链目录，使用如下命令安装必要的库文件和头文件：

sudo apt-get install libc6-arm64-cross
sudo apt-get install libc6-dev-arm64-cross
sudo apt-get install libstdc++-arm64-cross
sudo apt-get install libstdc++6-arm64-cross
sudo apt-get install libgcc-9-dev-arm64-cross
sudo apt-get install linux-libc-dev-arm64-cross

3. 如果还有其他头文件或库文件缺失，可以使用相应的 apt-get 命令进行安装。

4. 然后重新编译程序，看是否能够顺利通过。

如果还有其他问题，可以根据错误提示进行排查和解决。

#include<iostream> #include<ctime> #include<chrono> #include<string> #include<filesystem> #include<fstream> #include<sstream> #include<thread> #include<boost/filesystem.hpp> const uintmax_t MAX_LOGS_SIZE = 10ull * 1024ull * 1024ull * 1024ull; //const uintmax_t MAX_LOGS_SIZE = 10ull; void create_folder(std::string folder_name) { boost::filesystem::create_directory(folder_name); std::string sub_foldername=folder_name+"/logs_ros"; boost::filesystem::create_directory(sub_foldername); } std::string get_current_time() { auto now = std::chrono::system_clock::now(); std::time_t now_c = std::chrono::system_clock::to_time_t(now); std::tm parts = *std::localtime(&now_c); char buffer[20]; std::strftime(buffer, sizeof(buffer), "%Y-%m-%d-%H-%M", &parts); return buffer; } void check_logs_size() { std::string logs_path = "/home/sage/logs/"; boost::filesystem::path logs_dir(logs_path); std::uintmax_t total_size = 0; for (const auto& file : boost::filesystem::recursive_directory_iterator(logs_dir)) { if (boost::filesystem::is_regular_file(file)) { total_size += boost::filesystem::file_size(file); } } if (total_size > MAX_LOGS_SIZE) { boost::filesystem::path earliest_dir; std::time_t earliest_time = std::time(nullptr); for (const auto& dir : boost::filesystem::directory_iterator(logs_dir)) { if (boost::filesystem::is_directory(dir)) { std::string dir_name = dir.path().filename().string(); std::tm time_parts = {}; std::istringstream ss(dir_name); std::string part; std::getline(ss, part, '-'); time_parts.tm_year = std::stoi(part) - 1900; std::getline(ss, part, '-'); time_parts.tm_mon = std::stoi(part) - 1; std::getline(ss, part, '-'); time_parts.tm_mday = std::stoi(part); std::getline(ss, part, '-'); time_parts.tm_hour = std::stoi(part); std::getline(ss, part, '-'); time_parts.tm_min = std::stoi(part); std::time_t dir_time = std::mktime(&time_parts); if (dir_time < earliest_time) { earliest_time = dir_time; earliest_dir = dir.path(); } } } if (!earliest_dir.empty()) { boost::filesystem::remove_all(earliest_dir); } } } int main() { std::string logs_path = "/home/sage/logs/"; while (true) { std::chrono::system_clock::time_point now = std::chrono::system_clock::now(); std::time_t now_c = std::chrono::system_clock::to_time_t(now); std::tm parts = *std::localtime(&now_c); if (parts.tm_min % 10 == 0) { std::string folder_name = logs_path + get_current_time(); create_folder(folder_name); } check_logs_size(); std::this_thread::sleep_for(std::chrono::minutes(1)); } return 0; }修改为ros节点

好的，我可以帮您将这段代码修改为ROS节点。首先，我们需要包含ROS所需的头文件，例如：

#include <ros/ros.h>

然后，我们需要在main函数中初始化ROS节点：

int main(int argc, char** argv) {
    ros::init(argc, argv, "log_manager_node");
    ros::NodeHandle nh;
    // ...
    return 0;
}

接下来，我们需要将定时任务和日志删除任务分别封装为ROS的定时器和服务。在main函数中，我们可以这样定义一个定时器：

ros::Timer timer = nh.createTimer(ros::Duration(60.0), timerCallback);

其中，`timerCallback` 是一个你需要定义的回调函数，它将在每隔60秒被定时器调用一次。在回调函数中，你可以像之前的代码一样执行创建文件夹和检查日志大小的任务。

同样地，我们可以定义一个ROS服务来执行删除任务。我们需要在main函数中定义一个服务服务器：

ros::ServiceServer delete_logs_server = nh.advertiseService("delete_logs", deleteLogsCallback);

其中，`deleteLogsCallback` 是一个你需要定义的服务回调函数，它将在收到删除日志服务请求时被调用。在回调函数中，你可以像之前的代码一样执行删除日志的任务。

最后，完整的ROS节点代码如下：

#include <ros/ros.h>
#include <ctime>
#include <chrono>
#include <string>
#include <filesystem>
#include <fstream>
#include <sstream>
#include <thread>
#include <boost/filesystem.hpp>

const uintmax_t MAX_LOGS_SIZE = 10ull * 1024ull * 1024ull * 1024ull;

void create_folder(std::string folder_name) {
    boost::filesystem::create_directory(folder_name);
    std::string sub_foldername = folder_name + "/logs_ros";
    boost::filesystem::create_directory(sub_foldername);
}

std::string get_current_time() {
    auto now = std::chrono::system_clock::now();
    std::time_t now_c = std::chrono::system_clock::to_time_t(now);
    std::tm parts = *std::localtime(&now_c);
    char buffer[20];
    std::strftime(buffer, sizeof(buffer), "%Y-%m-%d-%H-%M", &parts);
    return buffer;
}

void check_logs_size() {
    std::string logs_path = "/home/sage/logs/";
    boost::filesystem::path logs_dir(logs_path);
    std::uintmax_t total_size = 0;
    for (const auto& file : boost::filesystem::recursive_directory_iterator(logs_dir)) {
        if (boost::filesystem::is_regular_file(file)) {
            total_size += boost::filesystem::file_size(file);
        }
    }
    if (total_size > MAX_LOGS_SIZE) {
        boost::filesystem::path earliest_dir;
        std::time_t earliest_time = std::time(nullptr);
        for (const auto& dir : boost::filesystem::directory_iterator(logs_dir)) {
            if (boost::filesystem::is_directory(dir)) {
                std::string dir_name = dir.path().filename().string();
                std::tm time_parts = {};
                std::istringstream ss(dir_name);
                std::string part;
                std::getline(ss, part, '-');
                time_parts.tm_year = std::stoi(part) - 1900;
                std::getline(ss, part, '-');
                time_parts.tm_mon = std::stoi(part) - 1;
                std::getline(ss, part, '-');
                time_parts.tm_mday = std::stoi(part);
                std::getline(ss, part, '-');
                time_parts.tm_hour = std::stoi(part);
                std::getline(ss, part, '-');
                time_parts.tm_min = std::stoi(part);
                std::time_t dir_time = std::mktime(&time_parts);
                if (dir_time < earliest_time) {
                    earliest_time = dir_time;
                    earliest_dir = dir.path();
                }
            }
        }
        if (!earliest_dir.empty()) {
            boost::filesystem::remove_all(earliest_dir);
        }
    }
}

void timerCallback(const ros::TimerEvent& event) {
    std::string logs_path = "/home/sage/logs/";
    std::chrono::system_clock::time_point now = std::chrono::system_clock::now();
    std::time_t now_c = std::chrono::system_clock::to_time_t(now);
    std::tm parts = *std::localtime(&now_c);
    if (parts.tm_min % 10 == 0) {
        std::string folder_name = logs_path + get_current_time();
        create_folder(folder_name);
    }
    check_logs_size();
}

bool deleteLogsCallback(std_srvs::Empty::Request& req, std_srvs::Empty::Response& res) {
    std::string logs_path = "/home/sage/logs/";
    boost::filesystem::path logs_dir(logs_path);
    boost::filesystem::remove_all(logs_dir);
    return true;
}

int main(int argc, char** argv) {
    ros::init(argc, argv, "log_manager_node");
    ros::NodeHandle nh;

    ros::Timer timer = nh.createTimer(ros::Duration(60.0), timerCallback);
    ros::ServiceServer delete_logs_server = nh.advertiseService("delete_logs", deleteLogsCallback);

    ros::spin();
    return 0;
}

在这个节点中，我们定义了一个名为 `log_manager_node` 的ROS节点，并在其中实现了一个定时器和一个服务。定时器每隔60秒检查一次日志大小并创建新的日志文件夹，服务则用于删除所有日志文件。