C语言结构体转json格式的字符串(一)

核心思想：

将C语言结构体变量转化为json格式的字符串

#include "s2j.h"    
#include <stdint.h>
#include <stdio.h>
//定义Student结构体类型
typedef struct {
uint8_t id;
double weight;
uint8_t score[8];
char name[10];
} Student;
//将结构体转化为cJSON对象
static cJSON *struct_to_json(void* struct_obj) {
          Student *struct_student = (Student *)struct_obj;
        s2j_create_json_obj(json_student);
        s2j_json_set_basic_element(json_student, struct_student, int, id);
        s2j_json_set_basic_element(json_student, struct_student, double, weight);
        s2j_json_set_array_element(json_student, struct_student, int, score, 8);
        s2j_json_set_basic_element(json_student, struct_student, string, name);
        return json_student;
    }
int main(void) {
        //定义Student结构体类型变量
        static Student student = {
        .id = 24,
        .weight = 71.2,
        .score = { 1, 2, 3, 4, 5, 6, 7, 8 },
        .name = "armink",
        };
        //将结构体Student类型变量student转化为cJSON对象
        cJSON *json_student = struct_to_json(&student);
        //输出不带格式的json字符串
        char*json_string = cJSON_PrintUnformatted(json_student);
        puts(json_string);
        //输出带格式的json字符串
        json_string = cJSON_Print(json_student);
        printf("\n");
        puts(json_string);
        //销毁cJSON对象json_student
        s2j_delete_json_obj(json_student);
        return 0;
}

运行结果如图：

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