Question

我尝试使用此代码接受来自控制台应用程序的参数。不幸的是，我得到的是一些奇怪的原因的布尔值。我不确定发生了什么。我想我可能会混合命名空间或其他东西。任何人吗？

#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);
}

对于任何对此感兴趣的人都是已实施并完成决议的计划。

#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，您的主要应该是：

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

Answer 2

这个循环很麻烦：

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]);
}

让我们说第一个参数是-f，后面跟着文件名。第一次循环运行，得到-f并提取文件名。然而，您argv[i]的下一次迭代将是您在第一次迭代中提取的文件名。

当您获得带参数的参数（例如-f）时，您需要在额外时间后增加i。

编辑：正如heavyd所述，您遇到的实际问题可能是字符串的比较。您不能将等号运算符用于原始C风格的字符串，您必须使用例如strcmp

像这样：

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

使用C ++中的托管代码接受控制台应用程序中的参数

2 个答案: