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jsonboostboost-propertytree
Fernando
Fernando

Reputation: 1517

How to output boost property tree as JSON encoded string?

Sometimes it is very useful to create JSON encoded strings for representing and exchanging data. What is be best way of encoding a Boost property tree into a JSON string?

Upvotes: 6

Views: 14796

Answers (1)

Fernando
Fernando

Reputation: 1517

Here is a sample code for doing that task:

#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/json_parser.hpp>
#include <boost/optional.hpp>
#include <iostream>
#include <sstream>
#include <cstdlib>

int main()
{
    boost::property_tree::ptree pt;
    pt.put("Test", "string");
    pt.put("Test2.inner0", "string2");
    pt.put("Test2.inner1", "string3");
    pt.put("Test2.inner2", 1234);

    std::stringstream ss;
    boost::property_tree::json_parser::write_json(ss, pt);

    std::cout << ss.str() << std::endl;

    return 0;
}

To compile this code with GCC:

g++ main.cpp -lboost_system -o SamplePT_JSON

And here is the expected output:

{
    "Test": "string",
    "Test2":
    {
        "inner0": "string2",
        "inner1": "string3",
        "inner2": "1234"
    }
}

Upvotes: 19

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