C++ boost replace_all 引用

Question

我对 boost::replace_all 有疑问。我的字符串看起来像:

""Date"":1481200838,""Message"":""

我希望它看起来像:

"Date":1481200838,"Message":"

所以我想用单个 " 替换 "":

boost::replace_all(request_json_str, """", """);

但它根本不起作用。与:

boost::replace_all(request_json_str, "\"\"", "\"");

我怎样才能让它发挥作用？

Answer 1

您需要在对 boost::replace_all 的调用中正确转义 " 字符!

// Example program
#include <iostream>
#include <string>
#include <algorithm>
#include <boost/algorithm/string/replace.hpp>

int main()
{
  std::string msg("\"Date\"\":1481200838,\"\"Message\"\":\"");
  boost::replace_all(msg, "\"\"", "\"");
  std::cout << msg << std::endl;
}