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JSON.cpp
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// JSON.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//
#include "File.h"
#include <filesystem>
#include <iomanip>
#include <iostream>
#include <nlohmann/json.hpp>
// for convenience
using json = nlohmann::json;
#include <iostream>
//创建json对象
/*
{
"pi": 3.141,
"happy": true,
"name": "Niels",
"nothing": null,
"answer": {
"everything": 42
},
"list": [1, 0, 2],
"object": {
"currency": "USD",
"value": 42.99
}
}
*/
void createJson()
{
/*
{
"answer": {
"everyting": 42
},
"happy": true,
"list": [
1,
0,
2
],
"name": "Niels",
"nothing": null,
"object": {
"currency": "USD",
"value": 42.99
},
"pi": 3.141
}
*/
// empty structure null
json j;
// add a number that is stored as double (note the implicit conversion of j to an object)
j["pi"] = 3.141;
// add a boolean that is stored as bool
j["happy"] = true;
// add a string that is stored as std::string
j["name"] = "Niels";
// add another null object by passing nullptr
j["nothing"] = nullptr;
// add another null object by passing nullptr
j["nothing"] = nullptr;
// add an object inside the object
j["answer"]["everyting"] = 42;
// add an array that is stored as std::vector (using an initializer list)
j["list"] = {1, 0, 2};
// add another object ,using an initializer list of pairs
j["object"] = {{"currency", "USD"}, {"value", 42.99}};
/////////////////////////j2和j3都跟j不一样吧TODO
// https://blog.csdn.net/forrid/article/details/78867679
// instead ,you could also write (which looks very similar to the json above)
json j2 = {{"pi", 3.143},
{"happy", true},
{"NAME", "CHLL"},
{"NOTHING", nullptr},
{"ANSWER", {"EVERYTHINS"}, 42},
{"list", {1, 0, 2}},
{"object", {{"currency", "USD"}, {"value", 42.99}}}};
std::cout << std::setw(4) << j << std::endl;
std::cout << "=============================" << std::endl;
std::cout << std::setw(4) << j2 << std::endl;
json j3 = {"pi",
3.143,
"happy",
true,
"NAME",
"CHLL",
"NOTHING",
nullptr,
{"ANSWER", {"EVERYTHINS"}, 42},
"list",
{1, 0, 2},
"object",
{"currency", "USD", "value", 42.99}};
std::cout << "=============================" << std::endl;
std::cout << std::setw(4) << j3 << std::endl;
////////////序列化
// 从字符串字面量创建对象
/*
j4 {
"happy": true,
"pi": 3.141
}
*/
json j4 = "{\"happy\": true, \"pi\": 3.141}"_json;
// 最好是使用原始字符串字面量
/*
j5{
"happy": true,
"pi": 3.141
}
*/
auto j5 = R"({"happy": true, "pi": 3.141})"_json;
// 显式地分析
auto j6 = json::parse("{\"happy\": true, \"pi\": 3.141}");
std::cout << "j4 " << std::setw(4) << j4 << std::endl;
std::cout << "j5" << std::setw(4) << j5 << std::endl;
std::cout << "j6" << std::setw(4) << j6 << std::endl;
// 显式地转换至字符串
std::string s = j6.dump();
// 传入缩进空格数，使用良好的打印形式进行序列化
std::cout << j6.dump(4) << std::endl;
}
/*https://www.json.cn/
{
"project": "client-logs",
"region": "henzhen",
"logStore": "com-web",
"source": "127.0.0.1",
"encode" : 2,
"content":[{
"key1" : "%E5%86%85%E5%AE%B91",
"key2" : "%E5%86%AE%B91",
"key3" : "内容3"
},{
"key1" : "内容1",
"key2" : "内容2",
"key3" : "%E5%86%85%E5%AE%B93"
}]
}
*/
void create100()
{
std::cout << "=============================" << std::endl;
// json j = json::parse("{ \ "project \" : \ "client-logs \",\ "region \" : \"henzhen \",\"logStore \" :
// \"com-web \",\"source \" : \"127.0.0.1 \",\ "encode" : 2,}");
// auto j5 = R"({"happy": true, "pi": 3.141})"_json;
json raw = R"({
"project": "client-logs",
"region": "shenzhen",
"logStore": "com-web",
"source": "127.0.0.1",
"encode" : 2,
"content":[0,1,2]
})"_json;
// std::cout <<"comj:"<< std::setw(4) << j << std::endl;
std::cout << std::setw(4) << raw << std::endl;
}
void createarray()
{
std::cout << "=============================" << std::endl;
//创建一个空数组
json empty_array_explicit = json::array();
// 创建一个空对象的两种方式
json empty_object_implicit = json({});
json empty_object_explicit = json::object();
// array是一个数组，可以用数字直接下标访问。
json array = {"a", 6, "xin", 8};
std::cout << "array[0]" << std::setw(4) << array[0] << std::endl;
/*
// add an object inside the object
j["answer"]["everyting"] = 42;
// add an array that is stored as std::vector (using an initializer list)
j["list"] = {1, 0, 2};
// add another object ,using an initializer list of pairs
j["object"] = {{"currency", "USD"}, {"value", 42.99}};
*/
json j;
// add a number that is stored as double (note the implicit conversion of j to an object)
//会覆盖啊 TODO
/*
"content": {
"5": "5",
"6": 42.99,
"7": "8"
},
*/
j["content"] = {{"currency", "USD"}, {"value", 42.99}, {"nihao", "home"}};
j["content"] = {{"1", "2"}, {"3", 42.99}, {"4", "5"}};
j["content"] = {{"5", "5"}, {"6", 42.99}, {"7", "8"}};
j["module"] = "china";
std::cout << std::setw(4) << j << std::endl;
std::cout << "=============================" << std::endl;
//怎么变为了这个样子： "1content": " [ \"one\", \"two\", \"three\" ]", ？？？？？？TODO
j["1_content"] = R"( [ "one", "two", "three" ])";
/*
"2_content": "[\n { \"op\": \"replace\", \"path\": \"/baz\", \"value\": \"boo\" },\n { \"op\": \"add\",
\"path\": \"/hello\", \"value\": [\"world\"] },\n { \"op\": \"remove\", \"path\": \"/foo\"} \n]",
*/
j["2_content"] = R"([
{ "op": "replace", "path": "/baz", "value": "boo" },
{ "op": "add", "path": "/hello", "value": ["world"] },
{ "op": "remove", "path": "/foo"}
])";
/*
3 是这样的，看起来这个就符合要求
"3_content": [
{
"op": "replace",
"path": "/baz",
"value": "boo"
},
{
"op": "add",
"path": "/hello",
"value": [
"world"
]
},
{
"op": "remove",
"path": "/foo"
}
],
*/
//这个也符号要求，j["2_content"] 的方法可以直接转为json的字符串
j["3_content"] = json::parse(
"[ { \"op\": \"replace\", \"path\": \"/baz\", \"value\": \"boo\" },\n { \"op\": \"add\", \"path\": "
"\"/hello\", \"value\": [\"world\"] },\n { \"op\": \"remove\", \"path\": \"/foo\"} ]");
/*
GOOD!
厉害了，这个符合要求
"4_content": [
{
"currency": "USD",
"nihao": "home",
"value": 42.99
},
{
"5": "5",
"6": 42.99,
"7": "8"
},
{
"5": "5",
"6": 42.99,
"7": "8"
}
],
*/
json m1 = {{"currency", "USD"}, {"value", 42.99}, {"nihao", "home"}};
json m2 = {{"1", "2"}, {"3", 42.99}, {"4", "5"}};
json m3 = {{"5", "5"}, {"6", 42.99}, {"7", "8"}};
//这样符合要求
j["4_content"] = {m1, m3, m3};
std::cout << std::setw(4) << j << std::endl;
}
void creatPatch()
{
// a JSON value
json j_original = R"({
"baz": ["one", "two", "three"],
"foo": "bar"
})"_json;
// https://www.jianshu.com/p/69e57f2af904
// a JSON patch (RFC 6902)
json j_patch = R"([
{ "op": "replace", "path": "/baz", "value": "boo" },
{ "op": "add", "path": "/hello", "value": ["world"] },
{ "op": "remove", "path": "/foo"}
])"_json;
}
class Component
{
public:
Component(std::string type) { name = type; }
/*
{
"TIME": "china_2",
"Type": "1_china"
},
*/
void Serialize(json& outJson)
{
outJson["Type"] = std::to_string(++id) + "_" + name;
outJson["TIME"] = name + "_" + std::to_string(++id);
}
static int id;
private:
std::string name;
};
int Component::id = 0;
/*
d
[
{
"Components": [
{
"Type": "1_china"
},
{
"Type": "1_usa"
},
{
"Type": "1_english"
}
],
"Name": "zhangbin"
}
]
*/
void createVecor(json& d)
{
json thing;
thing["Name"] = "zhangbin";
json& componentsJson = thing["Components"];
std::vector<Component> sss;
sss.push_back(Component("china"));
sss.push_back(Component("usa"));
sss.push_back(Component("english"));
auto comps = sss;
for (auto comp : comps)
{
json compJson;
comp.Serialize(compJson);
/*
从vector来自动变为数组
[
{
"TIME": "china_2",
"Type": "1_china"
},
{
"TIME": "usa_4",
"Type": "3_usa"
},
{
"TIME": "english_6",
"Type": "5_english"
}
],
*/
componentsJson.push_back(compJson);
}
std::cout << "===========thing==================" << std::endl;
/*
//{
//"Components": [
//{
// "Type": "1_china"
//},
//{
// "Type": "2_usa"
//},
//{
// "Type": "3_english"
//}
//],
//"Name": "zhangbin"
//}
*/
std::cout << std::setw(4) << thing << std::endl;
d.push_back(thing);
d.push_back(thing);
}
void jsonR_parse(std::string json_string)
{
// json j_patch = R"([
// { "op": "replace", "path": "/baz", "value": "boo" },
// { "op": "add", "path": "/hello", "value": ["world"] },
// { "op": "remove", "path": "/foo"}
//])"_json;
auto jj = json::parse(json_string);
std::cout << std::setw(4) << jj << std::endl;
}
Path FilePath;
void save(std::string fileName, json& world)
{
// void Scene::Save(std::string fileName, Transform * root)
{
FilePath = Path(fileName);
File worldFile(FilePath);
worldFile.Write(world.dump(4));
std::cout << world.dump(4) << std::endl;
}
}
void strdump(std::string str) { std::cout << "#####:" << std::setw(4) << str << std::endl; }
void push(json& m)
{
json up;
up["project"] = "1111";
up["region"] = "222222";
up["logStore"] = "44444";
// TODO IP 地址获取
up["source"] = "127.0.0.1";
up["encode"] = "3333";
up["content"].push_back(m);
std::cout << std::setw(4) << up << std::endl;
strdump(up.dump());
}
void ELK(const std::string& jsonstr)
{
auto j = json::parse(jsonstr);
push(j);
}
#include "show_mac.h"
int main()
{
std::cout << "Hello World!\n";
createJson();
create100();
createarray();
std::cout << "=============================" << std::endl;
/*
[
{
"Components": [
{
"Type": "1_china"
},
{
"Type": "1_usa"
},
{
"Type": "1_english"
}
],
"Name": "zhangbin"
},
{
"Components": [
{
"Type": "1_china"
},
{
"Type": "1_usa"
},
{
"Type": "1_english"
}
],
"Name": "zhangbin"
}
]
*/
json ddd;
createVecor(ddd);
std::cout << std::setw(4) << ddd << std::endl;
json d;
d["content"] = ddd;
std::cout << "=============================" << std::endl;
/*
{
"content": [
{
"Components": [
{
"Type": "1_china"
},
{
"Type": "1_usa"
},
{
"Type": "1_english"
}
],
"Name": "zhangbin"
},
{
"Components": [
{
"Type": "1_china"
},
{
"Type": "1_usa"
},
{
"Type": "1_english"
}
],
"Name": "zhangbin"
}
]
}
*/
std::cout << std::setw(4) << d << std::endl;
// E:\netttttt\http\zhangbincpprestsdk\WIN32\Release下面，跟exe同目录
save("ssave.txt", d);
/////
std::cout << "show mac..............." << std::endl;
// showmac();
std::string str = R"({"traceId":"client_test_str", "spanId":"client_test_spanId"})";
jsonR_parse(str);
json m1 = {{"currency", "USD"}, {"value", 42.99}, {"nihao", "home"}};
ELK(m1.dump());
system("pause");
return 0;
}
// 运行程序: Ctrl + F5 或调试 >“开始执行(不调试)”菜单
// 调试程序: F5 或调试 >“开始调试”菜单
// 入门使用技巧:
// 1. 使用解决方案资源管理器窗口添加/管理文件
// 2. 使用团队资源管理器窗口连接到源代码管理
// 3. 使用输出窗口查看生成输出和其他消息
// 4. 使用错误列表窗口查看错误
// 5. 转到“项目”>“添加新项”以创建新的代码文件，或转到“项目”>“添加现有项”以将现有代码文件添加到项目
// 6. 将来，若要再次打开此项目，请转到“文件”>“打开”>“项目”并选择 .sln 文件