C++如何使用libxml2库来解析RSS文档_使用C++和libxml2库解析RSS文档

#include <libxml/parser.h>
#include <libxml/tree.h>
#include <iostream>
#include <string>
<p>void parseRSS(const char* filename) {
xmlDocPtr doc = xmlReadFile(filename, nullptr, 0);
if (!doc) {
std::cerr << "无法解析文档: " << filename << std::endl;
return;
}</p><pre class='brush:php;toolbar:false;'>xmlNodePtr root = xmlDocGetRootElement(doc);
if (!root || xmlStrcmp(root->name, (const xmlChar*)"rss") != 0) {
    std::cerr << "根节点不是rss" << std::endl;
    xmlFreeDoc(doc);
    return;
}

for (xmlNodePtr channel = root->children; channel; channel = channel->next) {
    if (channel->type != XML_ELEMENT_NODE) continue;
    if (xmlStrcmp(channel->name, (const xmlChar*)"channel") == 0) {
        std::cout << "=== 频道信息 ===" << std::endl;

        for (xmlNodePtr item = channel->children; item; item = item->next) {
            if (item->type != XML_ELEMENT_NODE) continue;

            xmlChar* content = xmlNodeGetContent(item);
            if (content) {
                std::cout << item->name << ": " << content << std::endl;
                xmlFree(content);
            }
        }

        // 解析所有 item 条目
        for (xmlNodePtr child = channel->children; child; child = child->next) {
            if (xmlStrcmp(child->name, (const xmlChar*)"item") == 0) {
                std::cout << "\n--- 文章 ---" << std::endl;
                for (xmlNodePtr field = child->children; field; field = field->next) {
                    if (field->type == XML_ELEMENT_NODE) {
                        xmlChar* val = xmlNodeGetContent(field);
                        if (val) {
                            std::cout << field->name << ": " << val << std::endl;
                            xmlFree(val);
                        }
                    }
                }
            }
        }
    }
}

xmlFreeDoc(doc);
xmlCleanupParser();