c语言libxml2生成xml文档

1.源码实现

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libxml/parser.h>
#include <libxml/tree.h>

int main()
{
    //定义文档和节点指针
    xmlDocPtr doc = xmlNewDoc(BAD_CAST "1.0");
    doc->encoding = BAD_CAST strdup("UTF-8");
    xmlNodePtr root = xmlNewNode(NULL, BAD_CAST"root");

    //设置根节点
    xmlDocSetRootElement(doc, root);

    //在根节点直接创建节点
    xmlNewTextChild(root, NULL, BAD_CAST"newnode1", BAD_CAST"newnode1 conetent");
    xmlNewTextChild(root, NULL, BAD_CAST"newnode2", BAD_CAST"newnode2 conetent");
    xmlNewTextChild(root, NULL, BAD_CAST"newnode3", BAD_CAST"newnode3 conetent");

    //创建一个节点, 设置其内容和属性, 然后加入根节点
    xmlNodePtr node = xmlNewNode(NULL, BAD_CAST"node2");
    xmlNodePtr content = xmlNewText(BAD_CAST"NODE CONETENT");
    xmlAddChild(root, node);
    xmlAddChild(node, content);

    //创建一个儿子和孙子节点
    node = xmlNewNode(NULL, BAD_CAST"son");
    xmlAddChild(root, node);
    xmlNodePtr grandson = xmlNewNode(NULL, BAD_CAST"grandson");
    xmlAddChild(node, grandson);

    //添加属性
    xmlNewProp(node, BAD_CAST"attribute", BAD_CAST"yes");

    //存储xml文档
    int ret = xmlSaveFile("createxml.xml", doc);
    if(ret != -1)
    {
        printf("一个xml文档被创建, 写入%d个字节\n", ret);
    }

    //释放文档节点动态申请的内存
    free((void *)(doc->encoding));
    doc->encoding = NULL;
    xmlFreeDoc(doc);

    return 0;
}

2.编译源码

$ gcc -o SaveXmlFile SaveXmlFile.c -I/usr/local/include/libxml2 -L/usr/local/lib -lxml2

3.运行结果

<?xml version="1.0" encoding="UTF-8"?>
<root><newnode1>newnode1 conetent</newnode1><newnode2>newnode2 conetent</newnode2><newnode3>newnode3 conetent</newnode3><node2>NODE CONETENT</node2><son attribute="yes"><grandson/></son></root>