使用C ++中的托管代碼接受控制台應用程序中的參數

Question

我試圖使用此代碼接受來自控制台應用程序的參數。 不幸的是，我得到的是一些奇怪的原因的布爾值。 我不確定發生了什么。 我想我可能會混合命名空間或其他東西。 任何人？

#include "stdafx.h"

using namespace System;
using namespace System::Net;
using namespace System::IO;
using namespace System::Collections;
using namespace System::Text;

void uploadFile(String^ strFileName, String^ strServerName, String^ strUserName, String^         strPassword);
void prompt();

int main(int argc, char* argv[])
{
if (argc < 9)
{
    prompt();
}
else if (argc == 9)
{
    char* fileName;
    char* serverName;
    char* userName;
    char* password;

    for (int i = 1; i < argc; i++)
    {
        if (argv[i] == "-f")
            fileName = argv[i + 1];
        else if (argv[i] == "-s")
            serverName = argv[i + 1];
        else if (argv[i] == "-u")
            userName = argv[i + 1];
        else if (argv[i] = "-p")
            password = argv[i + 1];
        else
            prompt();
        Console::WriteLine(argv[i]);
    }
    String ^strFileName = gcnew String(fileName);
    String ^strServerName = gcnew String(serverName);
    String ^strUserName = gcnew String(userName);
    String ^strPassword = gcnew String(password);
    Console::WriteLine(argv[1]);
    Console::WriteLine(strFileName);
    uploadFile(strFileName, strServerName, strUserName, strPassword);
}
else
{
    prompt();
}
}

void uploadFile(String^ strFileName, String^ strServerName, String^ strUserName, String^ strPassword)
{
if (!strServerName->StartsWith("ftp://"))
{
    String^ host = "ftp://";
    host += strServerName;
    strServerName = host;
}
String^ path = Directory::GetCurrentDirectory();
WebClient^ wclient = gcnew WebClient();
wclient->Credentials = gcnew NetworkCredential(strUserName, strPassword);
String^ destFileName = path;
destFileName += strFileName;
Console::WriteLine(destFileName);
Console::WriteLine(strServerName);
/*array<Byte>^response = wclient->UploadFile(strServerName, destFileName);
if (response->Length > 0)
{
    ASCIIEncoding^ ascii = gcnew ASCIIEncoding;
    String^ decoded = ascii->GetString(response);
    Console::WriteLine("Response: {0}", decoded);
}*/
}
void prompt()
{
Console::WriteLine("Usage: ftpCLI.exe -f <filename> -s <server> -u <username> -p    <password>\n");
Console::ReadLine();
Environment::Exit(1);
}

對於任何有興趣的人來說，該計划的實施和完成決議。

#include "stdafx.h"
#include <string.h>

using namespace System;
using namespace System::Net;
using namespace System::IO;
using namespace System::Collections;
using namespace System::Text;

void uploadFile(String^ strFileName, String^ strServerName, String^ strUserName, String^     strPassword);
void prompt();

int main(int argc, char* argv[])
{
if (argc < 9)
{
    prompt();
}
else if (argc == 9)
{
    char* fileName;
    char* serverName;
    char* userName;
    char* password;

    for (int i = 1; i < argc; i++)
    {
        if (strcmp(argv[i], "-f") == 0)
            fileName = argv[i + 1];
        else if (strcmp(argv[i], "-s") == 0)
            serverName = argv[i + 1];
        else if (strcmp(argv[i], "-u") == 0)
            userName = argv[i + 1];
        else if (strcmp(argv[i], "-p") == 0)
            password = argv[i + 1];
        Console::WriteLine(argv[i]);
    }
    String ^strFileName = gcnew String(fileName);
    String ^strServerName = gcnew String(serverName);
    String ^strUserName = gcnew String(userName);
    String ^strPassword = gcnew String(password);
    Console::WriteLine(argv[1]);
    uploadFile(strFileName, strServerName, strUserName, strPassword);
}
else
{
    prompt();
}
}

void uploadFile(String^ strFileName, String^ strServerName, String^ strUserName, String^ strPassword)
{
if (!strServerName->StartsWith("ftp://"))
{
    String^ host = "ftp://";
    host += strServerName;
    strServerName = host;
}
String^ path = Directory::GetCurrentDirectory();
WebClient^ wclient = gcnew WebClient();
wclient->Credentials = gcnew NetworkCredential(strUserName, strPassword);
String^ destFileName = strServerName;
destFileName += "/" + strFileName;
array<Byte>^response = wclient->UploadFile(destFileName, strFileName);
if (response->Length > 0)
{
    ASCIIEncoding^ ascii = gcnew ASCIIEncoding;
    String^ decoded = ascii->GetString(response);
    Console::WriteLine("Response: {0}", decoded);
}
}
void prompt()
{
Console::WriteLine("Usage: ftpCLI.exe -f <filename> -s <server> -u <username> -p   <password>\n");
Console::ReadLine();
Environment::Exit(1);
}

Answer 1

在CLR控制台中，您的主要應該是：

int main(array<System::String ^> ^args)

Answer 2

這個循環很麻煩：

for (int i = 1; i < argc; i++)
{
    if (argv[i] == "-f")
        fileName = argv[i + 1];
    else if (argv[i] == "-s")
        serverName = argv[i + 1];
    else if (argv[i] == "-u")
        userName = argv[i + 1];
    else if (argv[i] = "-p")
        password = argv[i + 1];
    else
        prompt();
    Console::WriteLine(argv[i]);
}

讓我們說第一個參數是-f ，后面跟着文件名。 第一次循環運行你得到-f並提取文件名。 然而， argv[i]的下一次迭代將是您在第一次迭代中提取的文件名。

當你得到一個參數與參數（如-f ），你需要增加i一次額外的時間。

編輯：正如heavyd所說，你遇到的實際問題可能是字符串的比較。 您不能對原始C樣式字符串使用相等運算符，您必須使用例如strcmp 。

像這樣：

if (strcmp(argv[i], "-f") == 0) { ... }