json array parsing in c

Question

i am trying to parse a json array,i am facing problem.

My array is like this:

configure: {
  \"id\": 4,
  \"userId\": 107,
  \"deviceMacAddress\": \"         


        

Answer 1

You can use the jsoncpp to do this job. Array as a Json::Value, you can

medicationValue = jsonObject[medicationKey];
Json::Value::Members member;
member = medicationValue .getMemberNames();

for (Json::Value::Members::iterator iter = member.begin(); iter != member.end(); iter++) {
    the element of medication here
}

I hope will help you.

Answer 2

If you want to access the array as a json object, you should get it as a json_object* but not a array_list*

struct json_object *lArray; 
...
lArray=json_object_get(medi_obj); 
tmp1_obj = json_object_object_get(json_object_array_get_idx(lArray, 0), "name");

Answer 3

You need to access the inner array using a json_object * variable.

Try this:

struct json_object *med_obj, *medi_array, *medi_array_obj, *medi_array_obj_name;
int arraylen, i;
charname[10] = {0};
static const char filename[] = "xyz.txt";
med_obj = json_object_from_file(filename);
medi_array = json_object_object_get(med_obj, "medication");

// medi_array is an array of objects
arraylen = json_object_array_length(medi_array);

for (i = 0; i < arraylen; i++) {
  // get the i-th object in medi_array
  medi_array_obj = json_object_array_get_idx(medi_array, i);
  // get the name attribute in the i-th object
  medi_array_obj_name = json_object_object_get(medi_array_obj, "name");
  // print out the name attribute
  printf("name=%s\n", json_object_get_string(medi_array_obj_name));
}