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
 。。。