c++使用Poco实现字符串的base64解码,输出为字节数组
时间: 2024-02-19 15:01:57 浏览: 70
使用Poco库将Base64字符串解码成字节数组可以分为以下几个步骤:
1. 引入Poco库头文件和命名空间:
```c++
#include "Poco/Base64Decoder.h"
#include <iostream>
using namespace Poco;
using namespace std;
```
2. 定义待解码的Base64字符串和解码后的字节数组:
```c++
string base64Str = "SGVsbG8gV29ybGQh";
vector<unsigned char> decodedBytes;
```
3. 创建Base64解码器和输出流,并将解码后的字节输出到流中:
```c++
Base64Decoder decoder;
decoder.attach(new StringStream(base64Str));
char buffer[1024];
int bytesRead = decoder.read(buffer, sizeof(buffer));
while (bytesRead > 0)
{
for (int i = 0; i < bytesRead; i++)
{
decodedBytes.push_back(static_cast<unsigned char>(buffer[i]));
}
bytesRead = decoder.read(buffer, sizeof(buffer));
}
```
4. 输出解码后的字节数组:
```c++
for (int i = 0; i < decodedBytes.size(); i++)
{
cout << static_cast<int>(decodedBytes[i]) << " ";
}
cout << endl;
```
完整代码如下:
```c++
#include "Poco/Base64Decoder.h"
#include <iostream>
using namespace Poco;
using namespace std;
int main()
{
string base64Str = "SGVsbG8gV29ybGQh";
vector<unsigned char> decodedBytes;
Base64Decoder decoder;
decoder.attach(new StringStream(base64Str));
char buffer[1024];
int bytesRead = decoder.read(buffer, sizeof(buffer));
while (bytesRead > 0)
{
for (int i = 0; i < bytesRead; i++)
{
decodedBytes.push_back(static_cast<unsigned char>(buffer[i]));
}
bytesRead = decoder.read(buffer, sizeof(buffer));
}
for (int i = 0; i < decodedBytes.size(); i++)
{
cout << static_cast<int>(decodedBytes[i]) << " ";
}
cout << endl;
return 0;
}
```
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