Question

我正在使用nlohmann json，可以在这里找到

https://github.com/nlohmann/json#integration

我正在尝试从文件中读取json数据，这里是dictLoad1.json文件的一部分

编辑：所以我发现即使文件名正在生成正确的字符串，nlogmann的文件也没有打开。如果有人知道如何打开文件，我可以使用帮助。如果我搞清楚，我会更新。

"dictionary": [
   {"word": "MEAGRE", "definition": "A large European scinoid fish (Scina umbra or S. aquila),having white bloodless flesh. It is valued as a food fish. [Writtenalso maigre.]"},
    {"word": "GRUGRU WORM", "definition": "The larva or grub of a large South American beetle (Calandrapalmarum), which lives in the pith of palm trees and sugar cane. Itis eaten by the natives, and esteemed a delicacy."},
    {"word": "POSTPONEMENT", "definition": "The act of postponing; a deferring

从那个github网站上可以看出如何从json文件中读取输入并将其存储到json变量中 -

// read a JSON file
std::ifstream i("file.json");
json j;
i >> j;

这是我的代码试图在json文件中读取

        string filename = line.substr(input.size()+8, line.size());
        filename[4] = toupper(filename[4]);
        cout << filename << "\n"; //printing dictLoad1.json

        std::ifstream i(filename); 
        json j;
        i >> j;

代码在第i行＆gt;＆gt;处断开j

对于文件顶部的nlohmann我有

#include "json.hpp" 
using json = nlohmann::json;

确切的错误是

[json.exception.parse_error.101] parse error at 1: syntax error - unexpected end of input; expected '[', '{', or a literal
Makefile:36: recipe for target 'test' failed

读取json文件并存储json信息c ++

0 个答案: