boost解码base64
时间: 2023-11-09 15:05:22 浏览: 37
Boost库提供了base64编码和解码的功能,使用boost::archive::iterators::base64_decoder可以实现base64解码。具体步骤如下:
1. 引入boost库头文件:
```c++
#include <boost/archive/iterators/base64_decoder.hpp>
#include <boost/archive/iterators/transform_width.hpp>
#include <sstream>
```
2. 定义解码函数:
```c++
std::string base64_decode(const std::string& encoded_string) {
using namespace boost::archive::iterators;
typedef transform_width<binary_from_base64<std::string::const_iterator>, 8, 6> binary_t;
typedef std::istreambuf_iterator<char> istreambuf_iterator_t;
std::stringstream result;
std::copy(binary_t(encoded_string.begin()), binary_t(encoded_string.end()), std::ostream_iterator<char>(result));
return result.str();
}
```
3. 调用解码函数:
```c++
std::string encoded_string = "SGVsbG8gV29ybGQh";
std::string decoded_string = base64_decode(encoded_string);
std::cout << decoded_string << std::endl; // 输出"Hello World!"
```