怎么使用 gumbo获取所有 div标签 使用qt语言
时间: 2023-05-25 18:04:24 浏览: 126
在使用Gumbo获取所有div标签时,您需要使用以下步骤:
1. 下载并安装Gumbo分析器库:https://github.com/google/gumbo-parser
2. 在您的Qt项目中添加Gumbo库,并包含头文件“#include <gumbo.h>”
3. 使用Gumbo库中的gumbo_parse函数对HTML进行解析:
```C++
GumboOutput *output = gumbo_parse(html.c_str());
```
其中,html是您要解析的HTML字符串。
4. 遍历解析后的DOM树,使用Gumbo节点类型和属性值等信息获取所有的div标签:
```C++
void printNode(GumboNode* node)
{
if (node->type == GUMBO_NODE_ELEMENT) {
GumboAttribute* id_attribute = gumbo_get_attribute(&node->v.element.attributes, "id");
GumboAttribute* class_attribute = gumbo_get_attribute(&node->v.element.attributes, "class");
if (gumbo_tag_enum(node->v.element.tag) == GUMBO_TAG_DIV && id_attribute && class_attribute) {
printf("Found div element with id %s and class %s\n", id_attribute->value, class_attribute->value);
}
GumboVector* children = &node->v.element.children;
for (unsigned int i = 0; i < children->length; ++i) {
printNode(static_cast<GumboNode*>(children->data[i]));
}
}
}
printNode(output->root);
```
在printNode函数中,遍历DOM树并检查每个节点是否是div标签。如果是div标签,则获取其id和class属性值,并将其打印到控制台输出。
这样,您就可以使用Gumbo在Qt语言中获取所有的div标签了。
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