把遍历文件夹中所有的文件名写入一个txt文件中保存

Question

自己给出一个文件夹，把该文件夹中所有的文件名写入一个自定义txt文件中保存

现在不能遍历子文件夹

      WIN32_FIND_DATAA fileData;
            char strfile[1024] = {};
            HANDLE hflie = CreateFile(_T("遍历结果.txt"), 
            GENERIC_ALL, FILE_SHARE_READ, nullptr, CREATE_NEW,FILE_ATTRIBUTE_NORMAL, nullptr);

            HANDLE hfiandfile = FindFirstFileA("../遍历文件夹/*.*",&fileData);
            memcpy(strfile, fileData.cFileName, sizeof(char)*strlen(strfile));
            strcat_s(strfile, "\r\n");

            DWORD len = 0;
            WriteFile(hflie, strfile, strlen(strfile), &len, nullptr);

            while (FindNextFileA(hfiandfile, &fileData))
            {
                ZeroMemory(strfile, sizeof(char)* 1024);
                memcpy(strfile, fileData.cFileName, sizeof(char)*strlen(fileData.cFileName));
                strcat_s(strfile, "\r\n");
                WriteFile(hflie, strfile, strlen(strfile), &len, nullptr);
            }

            CloseHandle(hflie);
            CloseHandle(hfiandfile);

            return (INT_PTR)TRUE;
        }

Answer 1

遍历子文件夹一般都用递归来做，给你个用递归实现的代码，如果不用递归做会比较麻烦。

#define MAX_PATH_TEST (1024)
void RecursionDir(char* pcDir, HANDLE hOutFile)
{
char strfile[MAX_PATH_TEST] = {};
char acFind[MAX_PATH_TEST] = {};
sprintf(acFind, "%s/*", pcDir);
WIN32_FIND_DATAA fileData;
HANDLE hfiandfile = FindFirstFileA(acFind,&fileData);
if (INVALID_HANDLE_VALUE == hfiandfile)
{
return;
}

do 
{
    if (0 == strcmp(fileData.cFileName, ".") || 0 == strcmp(fileData.cFileName, ".."))
    {
        continue;
    }

    ZeroMemory(strfile, sizeof(char)* MAX_PATH_TEST);
    memcpy(strfile, fileData.cFileName, sizeof(char)*strlen(fileData.cFileName));
    strcat_s(strfile, "\r\n");
    DWORD len = 0;
    WriteFile(hOutFile, strfile, strlen(strfile), &len, nullptr);

    if (fileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
    {
        char acChild[MAX_PATH_TEST] = {};
        sprintf(acChild, "%s/%s", pcDir, fileData.cFileName);
        RecursionDir(acChild, hOutFile);
    }

} while (FindNextFileA(hfiandfile, &fileData));
FindClose(hfiandfile);

}

int main(){

WIN32_FIND_DATAA fileData;
char strfile[1024] = {};
HANDLE hflie = CreateFile(_T("遍历结果.txt"), 
GENERIC_ALL, FILE_SHARE_READ, nullptr, CREATE_NEW,FILE_ATTRIBUTE_NORMAL, nullptr);

RecursionDir("../遍历文件夹", hflie);

CloseHandle(hflie);

return 0;

}