将JSON文件中的数据提取到c中的结构中

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cJSON.h"

typedef struct {
    char name[100];
    int age;
    char address[100];
} Person;

int main() {
    // 读取JSON文件内容
    FILE *file = fopen("data.json", "r");
    if (file == NULL) {
        printf("Failed to open JSON file.\n");
        return 1;
    }

    fseek(file, 0, SEEK_END);
    long fileSize = ftell(file);
    fseek(file, 0, SEEK_SET);

    char *jsonData = (char *)malloc(fileSize + 1);
    fread(jsonData, 1, fileSize, file);
    jsonData[fileSize] = '\0';
    fclose(file);

    // 解析JSON文件
    cJSON *json = cJSON_Parse(jsonData);
    if (json == NULL) {
        printf("Failed to parse JSON data.\n");
        return 1;
    }

    // 提取数据到结构体
    Person person;
    cJSON *nameJson = cJSON_GetObjectItem(json, "name");
    if (nameJson != NULL && cJSON_IsString(nameJson)) {
        strcpy(person.name, nameJson->valuestring);
    }

    cJSON *ageJson = cJSON_GetObjectItem(json, "age");
    if (ageJson != NULL && cJSON_IsNumber(ageJson)) {
        person.age = ageJson->valueint;
    }

    cJSON *addressJson = cJSON_GetObjectItem(json, "address");
    if (addressJson != NULL && cJSON_IsString(addressJson)) {
        strcpy(person.address, addressJson->valuestring);
    }

    // 打印提取到的数据
    printf("Name: %s\n", person.name);
    printf("Age: %d\n", person.age);
    printf("Address: %s\n", person.address);

    // 释放资源
    cJSON_Delete(json);
    free(jsonData);

    return 0;
}