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c ajax json對(duì)象

C語言與Ajax的結(jié)合,通常會(huì)涉及到JSON對(duì)象的操作。JSON(JavaScript Object Notation)是一種輕量級(jí)的數(shù)據(jù)交換格式,易于閱讀和編寫,并且易于機(jī)器解析和生成。在C語言中,可以通過定義JSON對(duì)象來完成與前端Ajax請(qǐng)求的交互。

#include <stdio.h>
#include <jansson.h>
int main() {
// 創(chuàng)建JSON對(duì)象
json_t* obj = json_object();
json_object_set_new(obj, "name", json_string("Tom"));
json_object_set_new(obj, "age", json_integer(20));
json_object_set_new(obj, "male", json_true());
// 將JSON對(duì)象轉(zhuǎn)化為字符串,便于前端Ajax請(qǐng)求的傳輸
char* json_str = json_dumps(obj, 0);
printf("JSON string: %s\n", json_str);
// 解析前端Ajax請(qǐng)求的字符串,并生成JSON對(duì)象
json_error_t err;
json_t* new_obj = json_loads(json_str, 0, &err);
const char* name = json_string_value(json_object_get(new_obj, "name"));
int age = json_integer_value(json_object_get(new_obj, "age"));
int male = json_is_true(json_object_get(new_obj, "male"));
printf("Name: %s\n", name);
printf("Age: %d\n", age);
printf("Male: %d\n", male);
// 釋放JSON對(duì)象
json_decref(obj);
json_decref(new_obj);
free(json_str);
return 0;
}

以上代碼演示了如何在C語言中創(chuàng)建和解析JSON對(duì)象,并將其轉(zhuǎn)化為字符串方便前端Ajax請(qǐng)求的傳輸。在實(shí)際應(yīng)用中,可以根據(jù)具體需求,自定義JSON對(duì)象的鍵值關(guān)系,方便前后端之間的數(shù)據(jù)交互。