{"id":411,"date":"2026-05-29T22:50:52","date_gmt":"2026-05-29T14:50:52","guid":{"rendered":"http:\/\/www.millscience.cn\/?p=411"},"modified":"2026-05-29T22:50:55","modified_gmt":"2026-05-29T14:50:55","slug":"weatherapi","status":"publish","type":"post","link":"https:\/\/www.millscience.cn\/index.php\/weatherapi\/","title":{"rendered":"\u5fc3\u77e5\u5929\u6c14API\u8bf7\u6c42\u793a\u4f8b"},"content":{"rendered":"\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#D4D4D4;--cbp-line-number-width:calc(3 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#1E1E1E\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"\u590d\u5236\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>\/**\n * @filename:    jsonparsing.c\n * @brief:       \u5efa\u7acbtcp\u8fde\u63a5\uff0c\u5411api\u63a5\u53e3\u8bf7\u6c42\u5929\u6c14\u6570\u636e\u3002\u5e76\u5bf9\u8fd4\u56de\u7684JSON\u5b57\u7b26\u4e32\u89e3\u6790\n * @author:      philia\n * @date:        2026\/4\/25\n * @version:     ver1.0\n * @note         none\n * CopyRight (c) 2026   philia  All Right Reseverd\n *\/\n\n#include &lt;stdio.h>\n#include &lt;arpa\/inet.h>\n#include &lt;errno.h>\n#include &lt;string.h>\n#include &lt;stdlib.h>\n#include &lt;unistd.h>\n#include \"cJSON.h\"\n\n\/\/HTTP\u7aef\u53e3\n#define PORT 80\n\n\/\/\u8bf7\u6c42api\u670d\u52a1\u5668IP\n#define IP \"116.62.81.138\"\n\n\n\/\/ JSON\u89e3\u6790\u51fd\u6570\nvoid parse_weather(const char *json_str)\n{\n    cJSON *root = cJSON_Parse(json_str);\n    if (root == NULL) {\n        printf(\"JSON parse error\\n\");\n        return;\n    }\n\n    \/\/ \u7b2c\u4e00\u5c42\uff1aresults \u6570\u7ec4\n    cJSON *results = cJSON_GetObjectItem(root, \"results\");\n    if (!cJSON_IsArray(results)) {\n        printf(\"results is not an array\\n\");\n        cJSON_Delete(root);\n        return;\n    }\n\n    \/\/ \u904d\u5386\u6570\u7ec4\n    int arr_size = cJSON_GetArraySize(results);\n    for (int i = 0; i &lt; arr_size; i++) {\n        cJSON *item = cJSON_GetArrayItem(results, i);\n        if (item == NULL) continue;\n\n        \/\/ \u83b7\u53d6 location \u5bf9\u8c61\n        cJSON *location = cJSON_GetObjectItem(item, \"location\");\n        if (cJSON_IsObject(location)) {\n            \/\/ \u63d0\u53d6 location \u4e0b\u7684\u5404\u4e2a\u5b57\u6bb5\n            cJSON *loc_name    = cJSON_GetObjectItem(location, \"name\");\n            cJSON *loc_path    = cJSON_GetObjectItem(location, \"path\");\n\n            printf(\"=== Location ===\\n\");\n            if (cJSON_IsString(loc_name))   printf(\"name: %s\\n\", loc_name->valuestring);\n            if (cJSON_IsString(loc_path))   printf(\"path: %s\\n\", loc_path->valuestring);\n        }\n\n        \/\/ \u83b7\u53d6 last_update\n        cJSON *last_update = cJSON_GetObjectItem(item, \"last_update\");\n        if (cJSON_IsString(last_update))\n            printf(\"last_update: %s\\n\", last_update->valuestring);\n    }\n\n    \/\/ \u91ca\u653e root\n    cJSON_Delete(root);\n}\n\n\n\nint main(int argc, const char *argv[])\n{\n\n    int tcp_socket = socket(AF_INET, SOCK_STREAM, 0);\n    if (tcp_socket == -1)\n    {\n        fprintf(stderr, \"tcp_socket error, errno:%d,%s\", errno, strerror(errno));\n        exit(-1);\n    }\n\n    struct sockaddr_in dest_addr;\n    memset(&amp;dest_addr, 0, sizeof(dest_addr));    \/\/ \u6e05\u7a7a\u7ed3\u6784\u4f53\n    dest_addr.sin_family = AF_INET;              \/\/ IPv4\n    dest_addr.sin_port = htons(PORT);            \/\/ \u7aef\u53e3\u53f7\uff08\u8f6c\u4e3a\u7f51\u7edc\u5b57\u8282\u5e8f\uff09\n    inet_pton(AF_INET, IP, &amp;dest_addr.sin_addr); \/\/ \u76ee\u6807 IP\n    socklen_t size = sizeof(dest_addr);\n\n    int isconnect = connect(tcp_socket, (struct sockaddr *)&amp;dest_addr, size);\n    if (isconnect != 0)\n    {\n        fprintf(stderr, \"connect error, errno:%d,%s\", errno, strerror(errno));\n        exit(-1);\n    }\n\n    char input&#91;4096&#93; = {0};\n    char result&#91;4096&#93; = {0};\n\n    sprintf(input, \"GET https:\/\/api.seniverse.com\/v3\/weather\/now.json?key=S_-0v50j_wqkFuC9Q&amp;location=Guiyang&amp;language=en&amp;unit=c \"\n                   \"HTTP\/1.1\"\n                   \"\\r\\n\"\n                   \"Host:api.seniverse.com\\r\\n\"\n                   \"\\r\\n\");\n\n    memset(result, 0, sizeof(result));\n\n    send(tcp_socket, input, strlen(input), 0);\n\n    while (1)\n    {\n        \/\/ \u63a5\u6536\u670d\u52a1\u7aef\u4f20\u56de\u7684\u7ed3\u679c\u5e76\u6253\u5370\n        recv(tcp_socket, result, sizeof(result), 0);\n        memset(result, 0, sizeof(result));\n        recv(tcp_socket, result, sizeof(result), 0);\n        \/\/printf(\"Result:\\n%s\\n\", result);\n        break;\n    }\n\n    \/\/\u89e3\u6790JOSN\n    cJSON *json = cJSON_Parse(result);\n    \/\/char *string = cJSON_Print(json);\n    parse_weather(cJSON_Print(json));\n    \/\/printf(\"%s\\n\", string);\n\n    return 0;\n}<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #6A9955\">\/**<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\"> * <\/span><span style=\"color: #569CD6\">@filename:<\/span><span style=\"color: #6A9955\">    jsonparsing.c<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\"> * <\/span><span style=\"color: #569CD6\">@brief<\/span><span style=\"color: #6A9955\">:       \u5efa\u7acbtcp\u8fde\u63a5\uff0c\u5411api\u63a5\u53e3\u8bf7\u6c42\u5929\u6c14\u6570\u636e\u3002\u5e76\u5bf9\u8fd4\u56de\u7684JSON\u5b57\u7b26\u4e32\u89e3\u6790<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\"> * <\/span><span style=\"color: #569CD6\">@author<\/span><span style=\"color: #6A9955\">:      philia<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\"> * <\/span><span style=\"color: #569CD6\">@date<\/span><span style=\"color: #6A9955\">:        2026\/4\/25<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\"> * <\/span><span style=\"color: #569CD6\">@version<\/span><span style=\"color: #6A9955\">:     ver1.0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\"> * <\/span><span style=\"color: #569CD6\">@note<\/span><span style=\"color: #6A9955\">         none<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\"> * CopyRight (c) 2026   philia  All Right Reseverd<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\"> *\/<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">#include<\/span><span style=\"color: #569CD6\"> <\/span><span style=\"color: #CE9178\">&lt;stdio.h&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">#include<\/span><span style=\"color: #569CD6\"> <\/span><span style=\"color: #CE9178\">&lt;arpa\/inet.h&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">#include<\/span><span style=\"color: #569CD6\"> <\/span><span style=\"color: #CE9178\">&lt;errno.h&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">#include<\/span><span style=\"color: #569CD6\"> <\/span><span style=\"color: #CE9178\">&lt;string.h&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">#include<\/span><span style=\"color: #569CD6\"> <\/span><span style=\"color: #CE9178\">&lt;stdlib.h&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">#include<\/span><span style=\"color: #569CD6\"> <\/span><span style=\"color: #CE9178\">&lt;unistd.h&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">#include<\/span><span style=\"color: #569CD6\"> <\/span><span style=\"color: #CE9178\">&quot;cJSON.h&quot;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/HTTP\u7aef\u53e3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">#define<\/span><span style=\"color: #569CD6\"> PORT <\/span><span style=\"color: #B5CEA8\">80<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/\u8bf7\u6c42api\u670d\u52a1\u5668IP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #C586C0\">#define<\/span><span style=\"color: #569CD6\"> IP <\/span><span style=\"color: #CE9178\">&quot;116.62.81.138&quot;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A9955\">\/\/ JSON\u89e3\u6790\u51fd\u6570<\/span><\/span>\n<span class=\"line\"><span style=\"color: #569CD6\">void<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #DCDCAA\">parse_weather<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #569CD6\">const<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #569CD6\">char<\/span><span style=\"color: #D4D4D4\"> *<\/span><span style=\"color: #9CDCFE\">json_str<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    cJSON *root = <\/span><span style=\"color: #DCDCAA\">cJSON_Parse<\/span><span style=\"color: #D4D4D4\">(json_str);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (root == <\/span><span style=\"color: #569CD6\">NULL<\/span><span style=\"color: #D4D4D4\">) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">printf<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;JSON parse error<\/span><span style=\"color: #D7BA7D\">\\n<\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">return<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #6A9955\">\/\/ \u7b2c\u4e00\u5c42\uff1aresults \u6570\u7ec4<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    cJSON *results = <\/span><span style=\"color: #DCDCAA\">cJSON_GetObjectItem<\/span><span style=\"color: #D4D4D4\">(root, <\/span><span style=\"color: #CE9178\">&quot;results&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (!<\/span><span style=\"color: #DCDCAA\">cJSON_IsArray<\/span><span style=\"color: #D4D4D4\">(results)) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">printf<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;results is not an array<\/span><span style=\"color: #D7BA7D\">\\n<\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">cJSON_Delete<\/span><span style=\"color: #D4D4D4\">(root);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">return<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #6A9955\">\/\/ \u904d\u5386\u6570\u7ec4<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">int<\/span><span style=\"color: #D4D4D4\"> arr_size = <\/span><span style=\"color: #DCDCAA\">cJSON_GetArraySize<\/span><span style=\"color: #D4D4D4\">(results);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">for<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #569CD6\">int<\/span><span style=\"color: #D4D4D4\"> i = <\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">; i &lt; arr_size; i++) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        cJSON *item = <\/span><span style=\"color: #DCDCAA\">cJSON_GetArrayItem<\/span><span style=\"color: #D4D4D4\">(results, i);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (item == <\/span><span style=\"color: #569CD6\">NULL<\/span><span style=\"color: #D4D4D4\">) <\/span><span style=\"color: #C586C0\">continue<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #6A9955\">\/\/ \u83b7\u53d6 location \u5bf9\u8c61<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        cJSON *location = <\/span><span style=\"color: #DCDCAA\">cJSON_GetObjectItem<\/span><span style=\"color: #D4D4D4\">(item, <\/span><span style=\"color: #CE9178\">&quot;location&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #DCDCAA\">cJSON_IsObject<\/span><span style=\"color: #D4D4D4\">(location)) {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #6A9955\">\/\/ \u63d0\u53d6 location \u4e0b\u7684\u5404\u4e2a\u5b57\u6bb5<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            cJSON *loc_name    = <\/span><span style=\"color: #DCDCAA\">cJSON_GetObjectItem<\/span><span style=\"color: #D4D4D4\">(location, <\/span><span style=\"color: #CE9178\">&quot;name&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            cJSON *loc_path    = <\/span><span style=\"color: #DCDCAA\">cJSON_GetObjectItem<\/span><span style=\"color: #D4D4D4\">(location, <\/span><span style=\"color: #CE9178\">&quot;path&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #DCDCAA\">printf<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;=== Location ===<\/span><span style=\"color: #D7BA7D\">\\n<\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #DCDCAA\">cJSON_IsString<\/span><span style=\"color: #D4D4D4\">(loc_name))   <\/span><span style=\"color: #DCDCAA\">printf<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;name: <\/span><span style=\"color: #9CDCFE\">%s<\/span><span style=\"color: #D7BA7D\">\\n<\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #9CDCFE\">loc_name<\/span><span style=\"color: #D4D4D4\">-&gt;<\/span><span style=\"color: #9CDCFE\">valuestring<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #DCDCAA\">cJSON_IsString<\/span><span style=\"color: #D4D4D4\">(loc_path))   <\/span><span style=\"color: #DCDCAA\">printf<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;path: <\/span><span style=\"color: #9CDCFE\">%s<\/span><span style=\"color: #D7BA7D\">\\n<\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #9CDCFE\">loc_path<\/span><span style=\"color: #D4D4D4\">-&gt;<\/span><span style=\"color: #9CDCFE\">valuestring<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #6A9955\">\/\/ \u83b7\u53d6 last_update<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        cJSON *last_update = <\/span><span style=\"color: #DCDCAA\">cJSON_GetObjectItem<\/span><span style=\"color: #D4D4D4\">(item, <\/span><span style=\"color: #CE9178\">&quot;last_update&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #DCDCAA\">cJSON_IsString<\/span><span style=\"color: #D4D4D4\">(last_update))<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #DCDCAA\">printf<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;last_update: <\/span><span style=\"color: #9CDCFE\">%s<\/span><span style=\"color: #D7BA7D\">\\n<\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #9CDCFE\">last_update<\/span><span style=\"color: #D4D4D4\">-&gt;<\/span><span style=\"color: #9CDCFE\">valuestring<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #6A9955\">\/\/ \u91ca\u653e root<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #DCDCAA\">cJSON_Delete<\/span><span style=\"color: #D4D4D4\">(root);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #569CD6\">int<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #DCDCAA\">main<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #569CD6\">int<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">argc<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #569CD6\">const<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #569CD6\">char<\/span><span style=\"color: #D4D4D4\"> *<\/span><span style=\"color: #9CDCFE\">argv<\/span><span style=\"color: #569CD6\">[]<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">{<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">int<\/span><span style=\"color: #D4D4D4\"> tcp_socket = <\/span><span style=\"color: #DCDCAA\">socket<\/span><span style=\"color: #D4D4D4\">(AF_INET, SOCK_STREAM, <\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (tcp_socket == -<\/span><span style=\"color: #B5CEA8\">1<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">fprintf<\/span><span style=\"color: #D4D4D4\">(stderr, <\/span><span style=\"color: #CE9178\">&quot;tcp_socket error, errno:<\/span><span style=\"color: #9CDCFE\">%d<\/span><span style=\"color: #CE9178\">,<\/span><span style=\"color: #9CDCFE\">%s<\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D4D4D4\">, errno, <\/span><span style=\"color: #DCDCAA\">strerror<\/span><span style=\"color: #D4D4D4\">(errno));<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">exit<\/span><span style=\"color: #D4D4D4\">(-<\/span><span style=\"color: #B5CEA8\">1<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">struct<\/span><span style=\"color: #D4D4D4\"> sockaddr_in dest_addr;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #DCDCAA\">memset<\/span><span style=\"color: #D4D4D4\">(&amp;dest_addr, <\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #569CD6\">sizeof<\/span><span style=\"color: #D4D4D4\">(dest_addr));<\/span><span style=\"color: #6A9955\">    \/\/ \u6e05\u7a7a\u7ed3\u6784\u4f53<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #9CDCFE\">dest_addr<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #9CDCFE\">sin_family<\/span><span style=\"color: #D4D4D4\"> = AF_INET;<\/span><span style=\"color: #6A9955\">              \/\/ IPv4<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #9CDCFE\">dest_addr<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #9CDCFE\">sin_port<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #DCDCAA\">htons<\/span><span style=\"color: #D4D4D4\">(PORT);<\/span><span style=\"color: #6A9955\">            \/\/ \u7aef\u53e3\u53f7\uff08\u8f6c\u4e3a\u7f51\u7edc\u5b57\u8282\u5e8f\uff09<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #DCDCAA\">inet_pton<\/span><span style=\"color: #D4D4D4\">(AF_INET, IP, &amp;<\/span><span style=\"color: #9CDCFE\">dest_addr<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #9CDCFE\">sin_addr<\/span><span style=\"color: #D4D4D4\">);<\/span><span style=\"color: #6A9955\"> \/\/ \u76ee\u6807 IP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #4EC9B0\">socklen_t<\/span><span style=\"color: #D4D4D4\"> size = <\/span><span style=\"color: #569CD6\">sizeof<\/span><span style=\"color: #D4D4D4\">(dest_addr);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">int<\/span><span style=\"color: #D4D4D4\"> isconnect = <\/span><span style=\"color: #DCDCAA\">connect<\/span><span style=\"color: #D4D4D4\">(tcp_socket, (<\/span><span style=\"color: #569CD6\">struct<\/span><span style=\"color: #D4D4D4\"> sockaddr *)&amp;dest_addr, size);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">if<\/span><span style=\"color: #D4D4D4\"> (isconnect != <\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">fprintf<\/span><span style=\"color: #D4D4D4\">(stderr, <\/span><span style=\"color: #CE9178\">&quot;connect error, errno:<\/span><span style=\"color: #9CDCFE\">%d<\/span><span style=\"color: #CE9178\">,<\/span><span style=\"color: #9CDCFE\">%s<\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D4D4D4\">, errno, <\/span><span style=\"color: #DCDCAA\">strerror<\/span><span style=\"color: #D4D4D4\">(errno));<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">exit<\/span><span style=\"color: #D4D4D4\">(-<\/span><span style=\"color: #B5CEA8\">1<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">char<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">input<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #B5CEA8\">4096<\/span><span style=\"color: #D4D4D4\">&#93; = {<\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">};<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">char<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">result<\/span><span style=\"color: #D4D4D4\">&#91;<\/span><span style=\"color: #B5CEA8\">4096<\/span><span style=\"color: #D4D4D4\">&#93; = {<\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">};<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #DCDCAA\">sprintf<\/span><span style=\"color: #D4D4D4\">(input, <\/span><span style=\"color: #CE9178\">&quot;GET https:\/\/api.seniverse.com\/v3\/weather\/now.json?key=S_-0v50j_wqkFuC9Q&amp;location=Guiyang&amp;language=en&amp;unit=c &quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                   <\/span><span style=\"color: #CE9178\">&quot;HTTP\/1.1&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                   <\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D7BA7D\">\\r\\n<\/span><span style=\"color: #CE9178\">&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                   <\/span><span style=\"color: #CE9178\">&quot;Host:api.seniverse.com<\/span><span style=\"color: #D7BA7D\">\\r\\n<\/span><span style=\"color: #CE9178\">&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                   <\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D7BA7D\">\\r\\n<\/span><span style=\"color: #CE9178\">&quot;<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #DCDCAA\">memset<\/span><span style=\"color: #D4D4D4\">(result, <\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #569CD6\">sizeof<\/span><span style=\"color: #D4D4D4\">(result));<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #DCDCAA\">send<\/span><span style=\"color: #D4D4D4\">(tcp_socket, input, <\/span><span style=\"color: #DCDCAA\">strlen<\/span><span style=\"color: #D4D4D4\">(input), <\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">while<\/span><span style=\"color: #D4D4D4\"> (<\/span><span style=\"color: #B5CEA8\">1<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #6A9955\">\/\/ \u63a5\u6536\u670d\u52a1\u7aef\u4f20\u56de\u7684\u7ed3\u679c\u5e76\u6253\u5370<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">recv<\/span><span style=\"color: #D4D4D4\">(tcp_socket, result, <\/span><span style=\"color: #569CD6\">sizeof<\/span><span style=\"color: #D4D4D4\">(result), <\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">memset<\/span><span style=\"color: #D4D4D4\">(result, <\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">, <\/span><span style=\"color: #569CD6\">sizeof<\/span><span style=\"color: #D4D4D4\">(result));<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">recv<\/span><span style=\"color: #D4D4D4\">(tcp_socket, result, <\/span><span style=\"color: #569CD6\">sizeof<\/span><span style=\"color: #D4D4D4\">(result), <\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #6A9955\">\/\/printf(&quot;Result:\\n%s\\n&quot;, result);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">break<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #6A9955\">\/\/\u89e3\u6790JOSN<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    cJSON *json = <\/span><span style=\"color: #DCDCAA\">cJSON_Parse<\/span><span style=\"color: #D4D4D4\">(result);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #6A9955\">\/\/char *string = cJSON_Print(json);<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #DCDCAA\">parse_weather<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #DCDCAA\">cJSON_Print<\/span><span style=\"color: #D4D4D4\">(json));<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #6A9955\">\/\/printf(&quot;%s\\n&quot;, string);<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #C586C0\">return<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">}<\/span><\/span><\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":412,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19,13],"tags":[],"class_list":["post-411","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-embedded","category-learning"],"_links":{"self":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts\/411","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/comments?post=411"}],"version-history":[{"count":1,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts\/411\/revisions"}],"predecessor-version":[{"id":413,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts\/411\/revisions\/413"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/media\/412"}],"wp:attachment":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/media?parent=411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/categories?post=411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/tags?post=411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}