一個C語言json庫，支持解析和構造，支持windows和linux

時間 2019-11-09

標籤一個 c語言 json 支持解析構造 windows linux 欄目 JavaScript 简体版

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該json庫是一個cJSON的改進版本。 例程 #include "../json.h" void doit(char *text) {     char *out;json_ht json;         json=json_parse(text);     if (!json) {printf("Error before: [%s]\n",json_error_get());}     else     {         out=json_print(json,1);         printf("%s\n",out);         free(out);     }     json_delete(json); } void dofile(char *filename) {     FILE *f;long len;char *data;        f=fopen(filename,"rb");fseek(f,0,SEEK_END);len=ftell(f);fseek(f,0,SEEK_SET);     data=(char*)malloc(JALIGN(len+1,4));fread(data,1,len,f);fclose(f);     doit(data);     free(data); } struct record {     const char *precision;     double lat,lon;     const char *address,*city,*state,*zip,*country; }; void create_objects() {     json_ht root,fmt,img,thm,fld;char *out;int i;     const char *strings[7]={"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};         int numbers[3][3]={{0,-1,0},{1,0,0},{0,0,1}};     int ids[4]={116,943,234,38793};     struct record fields[2]=     {         {"zip",37.7668,-1.223959e+2,"","SAN FRANCISCO","CA","94107","US"},         {"zip",37.371991,-1.22026e+2,"","SUNNYVALE","CA","94085","US"}     };     root=json_object_new();        json_object_add(root, "name", json_string_new("Jack (\"Bee\") Nimble"));     json_object_add(root, "format", fmt=json_object_new());     json_object_add(fmt,"type",json_string_new("rect"));     json_object_add(fmt,"width",json_number_new(1920));     json_object_add(fmt,"height",json_number_new(1080));     json_object_add (fmt,"interlace",json_false_new());     json_object_add(fmt,"frame rate",json_number_new(24));         out=json_print(root,1);        json_delete(root);        printf("%s\n",out);        free(out);     root=json_array_string_new(strings,7);     out=json_print(root,1);        json_delete(root);        printf("%s\n",out);        free(out);     root=json_array_new();     for (i=0;i<3;i++)     {         json_array_add(root,json_array_int_new(numbers[i],3));     }     out=json_print(root,1);        json_delete(root);        printf("%s\n",out);        free(out);     root=json_object_new();     json_object_add(root, "Image", img=json_object_new());     json_object_add(img,"Width",json_number_new(800));     json_object_add(img,"Height",json_number_new(600));     json_object_add(img,"Title",json_string_new("View from 15th Floor"));     json_object_add(img, "Thumbnail", thm=json_object_new());     json_object_add(thm, "Url", json_string_new("http:/*www.example.com/image/481989943"));     json_object_add_number(thm,"Height",125);     json_object_add(thm,"Width",json_string_new("100"));     json_object_add(img,"IDs", json_array_int_new(ids,4));     out=json_print(root,1);        json_delete(root);        printf("%s\n",out);        free(out);     root=json_array_new();     for (i=0;i<2;i++)     {         json_array_add(root,fld=json_object_new());         json_object_add(fld, "precision", json_string_new(fields[i].precision));         json_object_add(fld, "Latitude", json_number_new(fields[i].lat));         json_object_add(fld, "Longitude", json_number_new(fields[i].lon));         json_object_add(fld, "Address", json_string_new(fields[i].address));         json_object_add(fld, "City", json_string_new(fields[i].city));         json_object_add(fld, "State", json_string_new(fields[i].state));         json_object_add(fld, "Zip", json_string_new(fields[i].zip));         json_object_add(fld, "Country", json_string_new(fields[i].country));     }        //json_object_replace(json_array_get(root,1),"City",json_int_array(ids,4));        out=json_print(root,1);        json_delete(root);        printf("%s\n",out);        free(out); } void test() {     json_ht pJsonRoot = NULL,tf=NULL;     pJsonRoot = json_object_new();     if(NULL == pJsonRoot)     {         return ;     }     json_object_add_string(pJsonRoot, "hello", "hello world");     json_object_add_number(pJsonRoot, "number", 10010);     json_object_add_bool(pJsonRoot, "bool", 1);     json_ht pSubJson = NULL;     pSubJson = json_object_new();     if(NULL == pSubJson)     {         json_delete(pJsonRoot);         return ;     }     json_object_add_string(pSubJson, "subjsonobj", "a sub json string");     json_object_add(pJsonRoot, "subobj", pSubJson);     json_saveto_file(pJsonRoot,"test1.json");     json_delete(pJsonRoot);     printf("==========================================json_parse_file====================================================\n");         tf = json_parse_file("test1.json");         char * p = json_print(tf,1);     if(NULL == p)     {         json_delete(tf);         return ;     }     printf("%s\n", p);     printf("============================================================================================================\n");     json_delete(tf); } int main (int argc, const char * argv[]) {     char text1[]="{\n\"name\": \"Jack (\\\"Bee\\\") Nimble\", \n\"format\": {\"type\":       \"rect\", \n\"width\":      1920, \n\"height\":     1080, \n\"interlace\":  false,\"frame rate\": 24\n}\n}";            doit(text1);     test();     create_objects();         return 0; } 官方博客:http://www.wangzugang.net/blog/json.html 源碼地址:https://github.com/wzugang/jsonhtml