cJSON结构体构建

cJSON结构体构建

一：cJSON的构建。

 int create_objects()
 {
     cJSON *root, *fmt, *img, *thm, *fld;
     char *out;
     int i;    /* The index number. */
     int ret = ;

     /* Here we construct several JSON objects. */

     // ------------------构建第1个----------------------
     /* The "Video" data type: */
     root = cJSON_CreateObject();
     cJSON_AddItemToObject(root, "name", cJSON_CreateString("Jack (\"Bee\") Nimble"));
     cJSON_AddItemToObject(root, "format", fmt = cJSON_CreateObject());
     cJSON_AddStringToObject(fmt, "type",        "rect");
     cJSON_AddNumberToObject(fmt, "width",        );
     cJSON_AddNumberToObject(fmt, "height",        );
     cJSON_AddFalseToObject (fmt, "interlace");
     cJSON_AddNumberToObject(fmt, "frame rate",    );

     out = cJSON_Print(root); /* Print to text */
     cJSON_Delete(root);      /* Delete the cJSON object */
     LOG_I(cjson_example, "%s\n", out); /* Print out the text */
     cJSON_free(out);         /* Release the string. */

     // ------------------构建第2个----------------------
     /* The "days of the week" array: */
     const char *strings[] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
     root = cJSON_CreateStringArray(strings, );

     out = cJSON_Print(root);
     cJSON_Delete(root);
     LOG_I(cjson_example, "%s\n", out);
     cJSON_free(out);

      // ------------------构建第3个----------------------
     /* The matrix: */
     int numbers[][] = {{, -, }, {, , }, {, , }};
     root = cJSON_CreateArray();
     for (i = ; i < ; i++) {
         cJSON_AddItemToArray(root, cJSON_CreateIntArray(numbers[i], ));
     }

     /*    cJSON_ReplaceItemInArray(root,1,cJSON_CreateString("Replacement")); */
     out = cJSON_Print(root);
     cJSON_Delete(root);
     LOG_I(cjson_example, "%s\n", out);
     cJSON_free(out);

     // ------------------构建第4个----------------------
     /* The "gallery" item: */
     int ids[] = {, , , };
     root = cJSON_CreateObject();
     cJSON_AddItemToObject(root, "Image", img = cJSON_CreateObject());
     cJSON_AddNumberToObject(img, "Width", );
     cJSON_AddNumberToObject(img, "Height", );
     cJSON_AddStringToObject(img, "Title", "View from 15th Floor");
     cJSON_AddItemToObject(img, "Thumbnail", thm = cJSON_CreateObject());
     cJSON_AddStringToObject(thm, "Url", "http:/*www.example.com/image/481989943");
     cJSON_AddNumberToObject(thm, "Height", );
     cJSON_AddStringToObject(thm, "Width", "");
     cJSON_AddItemToObject(img, "IDs", cJSON_CreateIntArray(ids, ));

     out = cJSON_Print(root);
     cJSON_Delete(root);
     LOG_I(cjson_example, "%s\n", out);
     cJSON_free(out);

     // ------------------构建第5个----------------------
     /* The array of "records": */
     struct record fields[] = {
         {"zip", 37.7668, -1.223959e+2, "", "SAN FRANCISCO", "CA", "", "US"},
         {"zip", 37.371991, -1.22026e+2, "", "SUNNYVALE", "CA", "", "US"}
     };

     root = cJSON_CreateArray();
     for (i = ; i < ; i++) {
         cJSON_AddItemToArray(root, fld = cJSON_CreateObject());
         cJSON_AddStringToObject(fld, "precision", fields[i].precision);
         cJSON_AddNumberToObject(fld, "Latitude", fields[i].lat);
         cJSON_AddNumberToObject(fld, "Longitude", fields[i].lon);
         cJSON_AddStringToObject(fld, "Address", fields[i].address);
         cJSON_AddStringToObject(fld, "City", fields[i].city);
         cJSON_AddStringToObject(fld, "State", fields[i].state);
         cJSON_AddStringToObject(fld, "Zip", fields[i].zip);
         cJSON_AddStringToObject(fld, "Country", fields[i].country);
     }

     /*    cJSON_ReplaceItemInObject(cJSON_GetArrayItem(root,1),"City",cJSON_CreateIntArray(ids,4)); */
     out = cJSON_Print(root);
     cJSON_Delete(root);
     LOG_I(cjson_example, "%s\n", out);
     cJSON_free(out);
     return ret;
 }

二：打印如下

 {

     "name":    "Jack (\"Bee\") Nimble",

     "format":    {

         "type":    "rect",

         "width":    ,

         "height":    ,

         "interlace":    false,

         "frame rate":    

     }

 }

 ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]

 [[, -, ], [, , ], [, , ]]

 {

     "Image":    {

         "Width":    ,

         "Height":    ,

         "Title":    "View from 15th Floor",

         "Thumbnail":    {

             "Url":    "http:/*www.example.com/image/481989943",

             "Height":    ,

             "Width":    ""

         },

         "IDs":    [, , , ]

     }

 }

 [{

         "precision":    "zip",

         "Latitude":    37.7668,

         "Longitude":    -122.3958999999999,

         "Address":    "",

         "City":    "SAN FRANCISCO",

         "State":    "CA",

         "Zip":    "",

         "Country":    "US"

     }, {

         "precision":    "zip",

         "Latitude":    37.371991,

         "Longitude":    -122.02
 。。。