用來讀取json檔案並賦值給物件,使用了cJSON

typedef struct {
    cJSON *url;
    char path[100];
    char app_name[100];
} Enter;

int main(){
    FILE *f;//輸入檔案
    long len;//檔案長度
    char *content;//檔案內容
    cJSON *json;//封裝後的json物件
    f=fopen("./test.json","rb");
    fseek(f,0,SEEK_END);
    len=ftell(f);
    fseek(f,0
 
,SEEK_SET);
    content=(char*)malloc(len+1);
    fread(content,1,len,f);
    fclose(f);

    json=cJSON_Parse(content);
    if (!json) {
        printf("Error before: [%s]\n",cJSON_GetErrorPtr());
    }
    Enter weixin;
    //char *out=cJSON_Print(json);
    strcpy(weixin.app_name,cJSON_GetObjectItem(json,"app_name"
 
)->valuestring);
    strcpy(weixin.path,cJSON_GetObjectItem(json,"path")->valuestring);
    weixin.url=cJSON_GetObjectItem(json,"url");
    //列印字串
    printf("app_name:%s",weixin.app_name);
    //列印字串陣列
    int array_size=cJSON_GetArraySize(weixin.url);
    cJSON *item;
    int i;
    for(i=0; i< array_size; i++) {  
        item = cJSON_GetArrayItem(weixin.url, i);   
        printf
 
("%s\n",item->valuestring);  
    }  
    retutn 0;
}