Windows，LINUX下QT使用json-c-0.9

最近项目需要使用QT到json解析，因为项目要求使用json-c，刚刚接触QT，所以一直在网上找各种方法，结果都是LINUX下的方法。经过几天痛苦的编译等等。最后在WINDOWS下也成功了。现在分享下自己的方法，使刚接触的人有点启发。

1、首先下载 json-c-0.9

2、在LINUX下编译json-c-0.9

附转贴http://blog.csdn.net/w_ww_w/article/details/8294240

3、LINUX下编译通过后。

把LINUX下

复制到windows下。

4、把libjson.a放到C:\Qt\4.8.0\lib目录下。

5、在QT工程里test.pro下添加

LIBS += D:/Qt/test/libjson.a

6、下面是Main函数

#include <QtCore/QCoreApplication>

#include <json/json.h>

#include <json/json_tokener.h>

#include <json/json_object.h>

#include <json/json_util.h>

#include <stdio.h>

#include <stdlib.h>

#include <stddef.h>

#include <string.h>

int main(int argc, char *argv[])

{

QCoreApplication a(argc, argv);

json_tokener *tok;

json_object *my_string, *my_int, *my_object, *my_array;

json_object *new_obj;

int i;

MC_SET_DEBUG(1);

my_string = json_object_new_string("\t");

printf("my_string=%s\n", json_object_get_string(my_string));

printf("my_string.to_string()=%s\n", json_object_to_json_string(my_string));

json_object_put(my_string);

my_string = json_object_new_string("\\");

printf("my_string=%s\n", json_object_get_string(my_string));

printf("my_string.to_string()=%s\n", json_object_to_json_string(my_string));

json_object_put(my_string);

my_string = json_object_new_string("foo");

printf("my_string=%s\n", json_object_get_string(my_string));

printf("my_string.to_string()=%s\n", json_object_to_json_string(my_string));

my_int = json_object_new_int(9);

printf("my_int=%d\n", json_object_get_int(my_int));

printf("my_int.to_string()=%s\n", json_object_to_json_string(my_int));

my_array = json_object_new_array();

json_object_array_add(my_array, json_object_new_int(1));

json_object_array_add(my_array, json_object_new_int(2));

json_object_array_add(my_array, json_object_new_int(3));

json_object_array_put_idx(my_array, 4, json_object_new_int(5));

printf("my_array=\n");

for(i=0; i < json_object_array_length(my_array); i++) {

json_object *obj = json_object_array_get_idx(my_array, i);

printf("\t[%d]=%s\n", i, json_object_to_json_string(obj));

}

printf("my_array.to_string()=%s\n", json_object_to_json_string(my_array));

my_object = json_object_new_object();

json_object_object_add(my_object, "abc", json_object_new_int(12));

json_object_object_add(my_object, "foo", json_object_new_string("bar"));

json_object_object_add(my_object, "bool0", json_object_new_boolean(0));

json_object_object_add(my_object, "bool1", json_object_new_boolean(1));

json_object_object_add(my_object, "baz", json_object_new_string("bang"));

json_object_object_add(my_object, "baz", json_object_new_string("fark"));

json_object_object_del(my_object, "baz");

/*json_object_object_add(my_object, "arr", my_array);*/

printf("my_object=\n");

json_object_object_foreach(my_object, key, val) {

printf("\t%s: %s\n", key, json_object_to_json_string(val));

}

printf("my_object.to_string()=%s\n", json_object_to_json_string(my_object));

new_obj = json_tokener_parse("\"\003\"");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("/* hello */\"foo\"");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("// hello\n\"foo\"");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("\"\\u0041\\u0042\\u0043\"");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("null");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("True");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("12");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("12.3");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("[\"\\n\"]");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("[\"\\nabc\\n\"]");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("[null]");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("[]");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("[false]");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("[\"abc\",null,\"def\",12]");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("{}");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("{ \"foo\": \"bar\" }");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("{ \"foo\": \"bar\", \"baz\": null, \"bool0\": true }");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("{ \"foo\": [null, \"foo\"] }");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("{ \"abc\": 12, \"foo\": \"bar\", \"bool0\": false, \"bool1\": true, \"arr\": [ 1, 2, 3, null, 5 ] }");

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

new_obj = json_tokener_parse("{ foo }");

if(is_error(new_obj)) printf("got error as expected\n");

new_obj = json_tokener_parse("foo");

if(is_error(new_obj)) printf("got error as expected\n");

new_obj = json_tokener_parse("{ \"foo");

if(is_error(new_obj)) printf("got error as expected\n");

/* test incremental parsing */

tok = json_tokener_new();

new_obj = json_tokener_parse_ex(tok, "{ \"foo", 6);

if(is_error(new_obj)) printf("got error as expected\n");

new_obj = json_tokener_parse_ex(tok, "\": {\"bar", 8);

if(is_error(new_obj)) printf("got error as expected\n");

new_obj = json_tokener_parse_ex(tok, "\":13}}", 6);

printf("new_obj.to_string()=%s\n", json_object_to_json_string(new_obj));

json_object_put(new_obj);

json_tokener_free(tok);

json_object_put(my_string);

json_object_put(my_int);

json_object_put(my_object);

//json_object_put(my_array);

return a.exec();

}

7、编译就能正确运行了。

给WINDOWS下QT使用JSON-C的一个建议。