C++ Json解析CJsonObject的详细使用
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2022-04-09 10:10:10
引用头文件： 1 __declspec(dllexport) void __stdcall read_JSon(char* path) 2 { 3 ifstream t(path); 4 string str((istreambuf_iterator(t)),istreambuf_ite ......
引用头文件：
#include <string>
#include <iostream>
#include <fstream>
#include <cassert>
#include <stdio.h>
#include <io.h>
#include<sstream>
#include <vector>
#include "cjsonobject.hpp"
using namespace std;
using namespace neb;
cjsonobject objson;
1 __declspec(dllexport) void __stdcall read_json(char* path)
2 {
3 ifstream t(path);
4 string str((istreambuf_iterator<char>(t)),istreambuf_iterator<char>());
5 string strvalue;
6 objson= cjsonobject(str);
7 cout << "-------------------------------------------------------------------" << std::endl;}
1 //保存json文件
2 __declspec(dllexport) void __stdcall write_string_to_file_append(char* file_string)
3 {
4 /*remove(file_string);*/
5 std::ofstream oswrite(file_string, std::ofstream::trunc);
6 oswrite << objson.tostring();
7 oswrite << std::endl;
8 oswrite.close();
9 std::cout << "------------------执行完毕------------------------" << std::endl;
10 }
1.修改如下图数据结构：
1 __declspec(dllexport) void __stdcall fxmwinddirectbaseline(int num, int count, char** parr, int* sarr, int* iarr)
2 {
3
4 string ivalue;
5 for (int i = 0; i < objson["winddirectline"]["coordinates"][num]["mwinddirectbaseline"].getarraysize(); i++)
6 {
7 objson["winddirectline"]["coordinates"][num]["mwinddirectbaseline"].delete(i);
8 i--;
9 }
10 cout << "---------------" << endl;
11 cout << objson["winddirectline"]["coordinates"][num]["mwinddirectbaseline"].getarraysize() << endl;
12 cjsonobject je;
13 for (int i = 0; i < count; i++)
14 {
15 ivalue = parr[i];
16 je.add("p", ivalue);
17 je.add("s", sarr[i]);
18 je.add("i", iarr[i]);
19 std::cout << "parr:" << je.tostring() << std::endl;
20 objson["winddirectline"]["coordinates"][num]["mwinddirectbaseline"].add(je);
21 je.clear();
22 }
23 cout <<"---------------" << endl;
24 for (int i = 0; i < objson["winddirectline"]["coordinates"][num]["mwinddirectbaseline"].getarraysize(); i++)
25 {
26 cout << "mwinddirectbaseline" << i << ":" << objson["winddirectline"]["coordinates"][num]["mwinddirectbaseline"][i]("p") << endl;
27 }
28 cout << "---------------" << endl;
29 }
2.修改如下图数据结构：
1 __declspec(dllexport) void __stdcall upmwinddirectbars(int num,int count, char** fparr,int* fsarr, int* fiarr, char** hparr, int* hsarr, int* hiarr)
2 {
3 string ivalue;
4 for (int i = 0; i < objson["winddirectline"]["coordinates"][num]["mwinddirectbars"].getarraysize(); i++)
5 {
6 objson["winddirectline"]["coordinates"][num]["mwinddirectbars"].delete(i);
7 i--;
8 }
9 cout << "---------------" << endl;
10 cjsonobject je;
11 for (int i = 0; i < count; i++)
12 {
13 ivalue = fparr[i];
14 je.addemptysubobject("f");
15 je["f"].add("p", ivalue);
16 je["f"].add("s", fsarr[i]);
17 je["f"].add("i", fiarr[i]);
18 ivalue = hparr[i];
19 je.addemptysubobject("h");
20 je["h"].add("p", ivalue);
21 je["h"].add("s", hsarr[i]);
22 je["h"].add("i", hiarr[i]);
23 std::cout << "parr:" << je.tostring() << std::endl;
24 objson["winddirectline"]["coordinates"][num]["mwinddirectbars"].add(je);
25 je.clear();
26 }
27 cout << "---------------" << endl;
28 }
3.修改如下图数据结构：
1 __declspec(dllexport) void uphuxianarrays( int count, double* fparr, double* fsarr, double* fiarr)
2 {
3 std::cout << "-------------------------------------------------------------------" << std::endl;
4
5
6 for (int i = 0; i <objson["resultwindspeedgrid"]["huxianarrays"].getarraysize(); i++)
7 {
8 objson["resultwindspeedgrid"]["huxianarrays"].delete(i);
9 i--;
10 }
11 cout << "count:" << objson["resultwindspeedgrid"]["huxianarrays"].getarraysize() << endl;
12 cout << "---------------" << endl;
13 cjsonobject je;
14 for (int i = 0; i < count; i++)
15 {
16 je.addemptysubarray("params");
17 je["params"].add(fparr[i]);
18 je["params"].add(fsarr[i]);
19 je["params"].add(fiarr[i]);
20 std::cout << "parr:" << je.tostring() << std::endl;
21 objson["resultwindspeedgrid"]["huxianarrays"].add(je);
22 je.clear();
23 }
24 objson["resultwindspeedgrid"].replace("huxianshu", objson["resultwindspeedgrid"]["huxianarrays"].getarraysize());
25 cout << "---------------" << endl;
26 }
官方案例：
1 int ivalue;
2 std::string strvalue;
3 neb::cjsonobject ojson("{\"refresh_interval\":60,"
4 "\"dynamic_loading\":["
5 "{"
6 "\"so_path\":\"plugins/user.so\", \"load\":false, \"version\":1,"
7 "\"cmd\":["
8 "{\"cmd\":2001, \"class\":\"neb::cmduserlogin\"},"
9 "{\"cmd\":2003, \"class\":\"neb::cmduserlogout\"}"
10 "],"
11 "\"module\":["
12 "{\"path\":\"im/user/login\", \"class\":\"neb::modulelogin\"},"
13 "{\"path\":\"im/user/logout\", \"class\":\"neb::modulelogout\"}"
14 "]"
15 "},"
16 "{"
17 "\"so_path\":\"plugins/chatmsg.so\", \"load\":false, \"version\":1,"
18 "\"cmd\":["
19 "{\"cmd\":2001, \"class\":\"neb::cmdchat\"}"
20 "],"
21 "\"module\":[]"
22 "}"
23 "]"
24 "}");
25 std::cout << ojson.tostring() << std::endl;
26 std::cout << "-------------------------------------------------------------------" << std::endl;
27 std::cout << ojson["dynamic_loading"][0]["cmd"][1]("class") << std::endl;
28 ojson["dynamic_loading"][0]["cmd"][0].get("cmd", ivalue);
29 std::cout << "ivalue = " << ivalue << std::endl;
30 ojson["dynamic_loading"][0]["module"][0].get("path", strvalue);
31 std::cout << "strvalue = " << strvalue << std::endl;
32 std::cout << "-------------------------------------------------------------------" << std::endl;
33 ojson.addemptysubobject("depend");
34 ojson["depend"].add("nebula", "https://github.com/bwar/nebula");
35 ojson["depend"].addemptysubarray("bootstrap");
36 ojson["depend"]["bootstrap"].add("beacon");
37 ojson["depend"]["bootstrap"].add("logic");
38 ojson["depend"]["bootstrap"].add("logger");
39 ojson["depend"]["bootstrap"].add("interface");
40 ojson["depend"]["bootstrap"].add("access");
41 ojson["depend"].addemptysubarray("boot");
42 cjsonobject ject;
43 string ivalues;
44 for (int i = 0; i < count; i++)
45 {
46 ivalues = parr[i];
47 ject.add("p", ivalues);
48 ject.add("s", 0);
49 ject.add("i", -1);
50 std::cout << "parr:" << ject.tostring() << std::endl;
51 ojson["depend"]["boot"].add(ject);
52 ject.clear();
53 }
54 std::cout << ojson.tostring() << std::endl;
55 std::cout << "-------------------------------------------------------------------" << std::endl;
56 std::cout << ojson.toformattedstring() << std::endl;
完整案例下载地址：https://files-cdn.cnblogs.com/files/motao9527/cjsonobject.rar