CODEWITHSUNDEEP
c++rapidjson
Tom Macdonald
Tom Macdonald

Reputation: 6573

Rapidjson output to string not working

I am trying to use rapidjson to output itself to a string to save to a database, using the following code :

StringBuffer buffer;
Writer<FileStream> writer(buffer);
rest.Accept(writer);
string reststring = buffer.GetString();

where rest is a rapidjson::Document.

However I get the following error : 

no matching function for call to ‘rapidjson::Writer<rapidjson::FileStream>::Writer (rapidjson::StringBuffer&)’.

which is strange because the author of rapidjson recommended this method in an answer to a previous SO question.

Upvotes: 2

Views: 7144

Answers (3)

Arvind Kanjariya
Arvind Kanjariya

Reputation: 2097

Try to use rapidjson::StringBuffer and rapidjson::Writer for get string output.

rapidjson::StringBuffer buffer;
rapidjson::Writer<rapidjson::StringBuffer> writer(buffer);
rest.Accept(writer);
std::string str = buffer.GetString();

Here you can get value in both string as well as std::string. Above I used std::string for get value. This works...

Upvotes: 4

Tom Macdonald
Tom Macdonald

Reputation: 6573

I must have been tired at 9 last night when I wrote this piece of code.

Changing 

Writer<FileStream> writer(buffer);

to 

Writer<StringBuffer> writer(buffer);

solves the problem.

Upvotes: 6

Luca Davanzo
Luca Davanzo

Reputation: 21510

As your compiler suggest, you have to modify your code in:

 StringBuffer buffer;
 Writer<FileStream> writer(&buffer);

Or:

 StringBuffer* buffer;
 Writer<FileStream> writer(buffer);

Upvotes: 0

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