{"id":37,"date":"2025-10-14T14:04:03","date_gmt":"2025-10-14T06:04:03","guid":{"rendered":"http:\/\/47.99.178.170\/?p=37"},"modified":"2025-10-23T21:47:32","modified_gmt":"2025-10-23T13:47:32","slug":"%e6%ba%90%e7%a0%81%e8%a7%a3%e6%9e%90-cjson%e6%ba%90%e7%a0%81%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.garfield-blog.top\/?p=37","title":{"rendered":"\u3010\u6e90\u7801\u89e3\u6790\u3011 cJSON\u6e90\u7801\u89e3\u6790"},"content":{"rendered":"\n
\n

\u6e90\u7801\u4e0b\u8f7d\u94fe\u63a5https:\/\/sourceforge.net\/projects\/cjson\/<\/p>\n<\/blockquote>\n\n\n\n

1. \u6838\u5fc3\u6570\u636e\u7ed3\u6784<\/h2>\n\n\n\n

\u76f8\u540c\u7b49\u7ea7\u7684\u5143\u7d20\u4f7f\u7528\u53cc\u5411\u94fe\u8868\u94fe\u63a5\uff0c\u4e0d\u540c\u7b49\u7ea7\u7684\u5143\u7d20\u4f7f\u7528child<\/code>\u6307\u9488\u8fde\u63a5\u3002\u4f8b\u5982\uff1a\u591a\u4e2aobject<\/code>\u5e76\u5217\u65f6\u6216\u7740object<\/code>\u5185\u90e8\u7684\u6210\u5458\u4f7f\u7528\u53cc\u5411\u94fe\u8868\u8fde\u63a5\uff0cobject<\/code>\u540d\u79f0\u4e0e\u5176\u5185\u90e8\u7684\u6210\u5458\u901a\u8fc7child<\/code>\u8fde\u63a5<\/p>\n\n\n\n

typedef struct cJSON {\n    struct cJSON *next,*prev;   \/\/ \u53cc\u5411\u94fe\u8868\u5934\u8282\u70b9\u548c\u5c3e\u8282\u70b9\n    struct cJSON *child;        \/\/ \u5b58\u50a8\u5b50\u9879\n    int type;                   \/\/ \u8282\u70b9\u7c7b\u578b\n    char *valuestring;          \/\/ \u5b58\u50a8\u5bf9\u8c61\u6570\u7ec4\u6216\u952e\u503c\u5bf9\u7684\u5185\u5bb9\n    int valueint;               \/\/ number\u503c\u7684\u6574\u5f62\u5b58\u50a8\n    double valuedouble;         \/\/ number\u503c\u7684\u6d6e\u70b9\u578b\u5b58\u50a8\n    char *string;               \/\/ \u5b58\u50a8\u5bf9\u8c61\u6570\u7ec4\u6216\u952e\u503c\u5bf9\u7684\u540d\u79f0\n} cJSON;\n\n\/* cJSON Types: *\/\n#define cJSON_False 0\n#define cJSON_True 1\n#define cJSON_NULL 2\n#define cJSON_Number 3\n#define cJSON_String 4\n#define cJSON_Array 5\n#define cJSON_Object 6<\/code><\/pre>\n\n\n\n
\u6bcf\u4e00\u4e2ajson<\/code>\u8282\u70b9\u5bf9\u5e94\u7740\u4e00\u4e2acJSON<\/code>\u7ed3\u6784\uff0c\u4ece\u6700\u5916\u5c42\u5230\u6700\u5185\u5c42\u53ef\u4ee5\u770b\u505a\u662f\u4e00\u7ea7\u4e00\u7ea7\uff0c\u8f6c\u5316\u6210\u5bf9\u5e94\u7684\u6570\u636e\u7ed3\u6784\u5b58\u50a8\u5219\u5982\u4e0b\u56fe<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
2. \u5168\u5c40\u53d8\u91cf<\/h2>\n\n\n\n
char *ep;<\/code><\/p>\n\n\n\n
\u5728\u8bb0\u5f55\u51fa\u9519\u65f6\u662f\u5728\u54ea\u4e2a\u5b57\u7b26\uff0c\u4ee5\u9519\u8bef\u7801\u7684\u65b9\u5f0f\u8fd4\u56de\uff1b\u901a\u8fc7cJSON_GetErrorPtr()<\/code>\u83b7\u53d6\u3002\u672c\u6587\u7684\u793a\u4f8b\u4ee3\u7801\u4e2d\u4e0d\u6d89\u53ca\u6b64\u63a5\u53e3\uff0c\u540e\u6587\u4e2d\u4e5f\u4e0d\u6df1\u5165\u8ba8\u8bba\u6b64\u673a\u5236\uff0c\u5728\u6b64\u63d0\u51fa\u4ec5\u7528\u4e8e\u5411\u8bfb\u8005\u8865\u5145cJSON<\/code>\u6574\u4f53\u67b6\u6784\u8bbe\u8ba1<\/p>\n\n\n\n
3. \u4ece\u5b57\u7b26\u4e32\u89e3\u6790json\u6d41\u7a0b<\/h2>\n\n\n\n
cJSON<\/code>\u63d0\u4f9b\u7684\u4e00\u4e2a\u5173\u952e\u7684\u529f\u80fd\u4fbf\u662f\uff0c\u5bf9json<\/code>\u6587\u672c\u7684\u89e3\u6790\u3002\u5bf9\u4e8e\u6811\u72b6\u7ed3\u6784\u7684json<\/code>\u683c\u5f0fcJSON<\/code>\u521b\u5efa\u4e86struct cJSON<\/code>\u6570\u636e\u7ed3\u6784\uff0c\u5176\u4e2d\u4f7f\u7528\u4e86\u4f7f\u7528\u53cc\u5411\u94fe\u8868\u5b58\u50a8\u540c\u7ea7\u522b\u8282\u70b9\uff0c\u521b\u5efastruct cJSON *child<\/code>\u5143\u7d20\uff0c\u5b58\u50a8\u4f4e\u7ea7\u522b\u8282\u70b9\u3002\u89e3\u6790\u6d41\u7a0b\u4e2d\u4f7f\u7528\u53cc\u5c42\u9012\u5f52\u7684\u8bbe\u8ba1\u4ece\u6839\u8282\u70b9\u5f00\u59cb\u7531\u5916\u81f3\u5185\u4e00\u5c42\u5c42\u89e3\u6790\uff0c\u5bf9\u5b57\u7b26\u4e32\u7684\u5904\u7406\u548c\u6574\u4f53\u67b6\u6784\u8bbe\u8ba1\u6709\u8bb8\u591a\u7cbe\u5999\u4f18\u96c5\u7684\u8bbe\u8ba1\uff0c\u5728\u9605\u8bfb\u6e90\u7801\u65f6\u53ef\u4ee5\u5b66\u4e60\u501f\u9274\u3002\u672c\u7ae0\u8282\u4ece\u5b57\u7b26\u4e32\u89e3\u6790\u6d41\u7a0b\u5207\u5165\uff0c\u5bf9cJSON<\/code>\u4e2d\u7684\u540d\u79f0\u4ee5Parse_<\/code>\u5f00\u5934\u7684\u4e00\u7ec4\u63a5\u53e3\u8fdb\u884c\u5256\u6790\uff0c\u5728\u6e90\u7801\u5b66\u4e60\u4e2d\u611f\u53d7cJSON<\/code>\u4e2d\u8bbe\u8ba1\u7684\u5de7\u601d\u3002<\/strong><\/p>\n\n\n\n
\u53c2\u8003cjson<\/code>\u6e90\u4ee3\u7801\u4e2d\u7ed9\u51fademo<\/code>\u7684\u6d41\u7a0b<\/p>\n\n\n\n
\u6838\u5fc3\u51fd\u6570\u4e3acJSON_Parse<\/code>\u3001cJSON_Print<\/code>\u548ccJSON_Delete<\/code><\/p>\n\n\n\n
\u6838\u5fc3\u903b\u8f91\u5982\u4e0b<\/strong><\/p>\n\n\n\n
\n
\u7b14\u8005\u6ce8\uff1a\u4e0b\u6587\u4ee3\u7801\u5df2\u683c\u5f0f\u5316\u5904\u7406\uff0c\u5e76\u9002\u5f53\u7b80\u5316\u53ea\u4fdd\u7559\u6838\u5fc3\u903b\u8f91<\/p>\n<\/blockquote>\n\n\n\n
void doit(char *text)\n{\n    char *out;\n    cJSON *json;\n\n    json = cJSON_Parse(text);\n    out = cJSON_Print(json);\n    cJSON_Delete(json);\n    printf(\"%s\\n\", out);\n    free(out);\n}\n\nint main (int argc, const char * argv[])\n{\n    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}\"; \n\n    doit(text1);\n    create_objects();\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n
3.1 \u5173\u952e\u51fd\u6570\u63a5\u53e3\u53ca\u5b9e\u73b0\u903b\u8f91<\/h3>\n\n\n\n
cJSON_New_Item()<\/code>\u51fd\u6570<\/h4>\n\n\n\n
\u5185\u90e8\u6784\u9020\u51fd\u6570\uff0c\u521b\u5efa\u4e00\u4e2acjson<\/code>\u8282\u70b9\uff0c\u5e76\u8fd4\u56de\u8282\u70b9\u5730\u5740<\/p>\n\n\n\n
\u6838\u5fc3\u903b\u8f91\u5982\u4e0b<\/strong><\/p>\n\n\n\n
\n
\u7b14\u8005\u6ce8\uff1a\u4e0b\u6587\u4ee3\u7801\u5df2\u683c\u5f0f\u5316\u5904\u7406\uff0c\u5e76\u9002\u5f53\u7b80\u5316\u53ea\u4fdd\u7559\u6838\u5fc3\u903b\u8f91<\/p>\n<\/blockquote>\n\n\n\n
cJSON *cJSON_New_Item(void)\n{\n    cJSON* node = (cJSON*)malloc(sizeof(cJSON));\n    return node;\n}<\/code><\/pre>\n\n\n\n
\u51fd\u6570\u6838\u5fc3\u601d\u60f3<\/strong><\/p>\n\n\n\n
\u7533\u8bf7\u5185\u5b58\u8fd4\u56de\u5185\u5b58\u6307\u9488\uff0c\u521b\u5efa\u94fe\u8868\u6216\u5176\u4ed6\u6570\u636e\u7ed3\u6784\u8282\u70b9\u7684\u5e38\u89c4\u64cd\u4f5c\uff0c\u65e0\u9700\u591a\u8a00<\/p>\n\n\n\n
cJSON_Parse<\/code>()\u51fd\u6570<\/h4>\n\n\n\n
\u521b\u5efa\u65b0\u7684cJSON<\/code>\u8282\u70b9\uff0c\u8c03\u7528parse_value()<\/code>\u586b\u5145\u8282\u70b9<\/p>\n\n\n\n
\u6838\u5fc3\u903b\u8f91\u5982\u4e0b<\/strong><\/p>\n\n\n\n
\n
\u7b14\u8005\u6ce8\uff1a\u4e0b\u6587\u4ee3\u7801\u5df2\u683c\u5f0f\u5316\u5904\u7406\uff0c\u5e76\u9002\u5f53\u7b80\u5316\u53ea\u4fdd\u7559\u6838\u5fc3\u903b\u8f91<\/p>\n<\/blockquote>\n\n\n\n
\/* Parse an object - create a new root, and populate. *\/\ncJSON *cJSON_ParseWithOpts(const char *value)\n{\n    cJSON *c = cJSON_New_Item();\n    parse_value(c, skip(value));\n\n    return c;\n}\n\n\/* Default options for cJSON_Parse *\/\ncJSON *cJSON_Parse(const char *value)\n{\n    return cJSON_ParseWithOpts(value);\n}<\/code><\/pre>\n\n\n\n
\u51fd\u6570\u6838\u5fc3\u601d\u60f3<\/strong><\/p>\n\n\n\n
\u672c\u8d28\u662f\u5bf9parse_value()<\/code>\u7684\u4e00\u5c42\u5c01\u88c5<\/p>\n\n\n\n
parse_value()<\/code>\u51fd\u6570<\/h4>\n\n\n\n
\u6587\u672c\u89e3\u6790\u5904\u7406\u51fd\u6570\uff0c\u5bf9\u6587\u672c\u8fdb\u884c\u521d\u6b65\u5206\u7c7b\u3002\u5bf9\u4e0d\u540c\u7684\u60c5\u51b5\u4f7f\u7528\u4e0d\u540c\u7684\u5904\u7406\u6d41\u7a0b<\/p>\n\n\n\n