Json学习一

谁践踏了优雅 2022-08-13 12:56 132阅读 0赞

#include "stdafx.h"
    #include <iostream>
    #include "App2.h"
    #include "json.h"
    #include <fstream>
    
    using namespace std;
    using namespace Json;
    
    int ParseJsonFromString()
    {
    	const char* str = "{\"up\": \"UP0000\",\"code\": 100}";
    
    	Reader reader;
    	Value root;
    	if (reader.parse(str, root))
    	{
    		string szTxt = root["up"].asString();
    		int val = root["code"].asInt();
    		string szTmp  = root.get("dd", "f").asString();
    		cout << szTxt << " " << val << " " << szTmp << endl;
    	}
    	return 0;
    }
    
    
    int ParseJsonFromFile(const char* filename)
    {
    	Reader reader;
    	Value root;
    
    	ifstream is;
    	
    	if (reader.parse(is,root))
    	{
    		string szTxt;
    		if (root["files"].isNull())
    		{
    			szTxt = root["uploadid"].asString();
    		}
    
    		int nSize = root["files"].size();
    		for (int i = 0; i < nSize; ++i)	
    		{
    			Value image = root["files"][i]["image"];
    			int nImSize = image.size();
    
    			string sztype = image["type"].asString();
    			string szurl = image["url"].asString();
    		}
    	}
    
    	return 0;
    }
    
    
    void InitJson()
    {
    	Value arrobj;
    	Value item1, item2;
    	item1["date"] = "2011-1-1";
    	item1["time"] = "17:31";
    
    	arrobj.append(item1);
    	arrobj.append(item2);
    
    }
    
    void test()
    {
    	Value quest;
    	quest["1"].append(1);
    	quest["1"].append(2);
    
    
    	Value temp;
    	temp["name"] = "Json";
    	temp["age"] = 2;
    
    	Value root;
    	root["obj"] = temp;
    	root["arr"].append("hello");
    	root["arr"].append(1);
    
    	root["val"].append(1);
    
    	StyledWriter writer;
    	cout << writer.write(root) << endl;	
    }