linux C 使用mini xml解析 xml

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头文件   #include "mxml.h"  （需要加载xml动态库）

<?xml version="1.0" encoding="utf-8"?>
<bookstore>
    <book category="CHILDREN">
        <title>Harry.Potter</title>
        <author>JK.Rowling</author>
        <year>2005</year>
        <price>29.99</price>
    </book>
    <book category="WEB">
        <title>LearningXML</title>
        <author>ErikT.Ray</author>
        <year>2003</year>
        <price>39.95</price>
    </book>
</bookstore>

解析：

1、 FILE *fp = fopen(xml_file, "r");      //打开xml文件，注意文件路径与文件打开方式

2、 mxml_node_t *tree = mxmlLoadFile(NULL, fp, MXML_TEXT_CALLBACK);   //获取xml文件指针

        fclose(fp);  //此处可以关闭文件

3、mxml_node_t *book = mxmlFindElement(pRoot, pRoot,"book", "category", NULL,MXML_DESCEND);   

   //从父节点读取 book 节点 

3.1  printf("book: %s\r\n",book->value.element.attrs[0].value);   // 读取book 节点中第一个变量值

4、 mxml_node_t *title = mxmlFindElement(book,pRoot,"title",NULL,NULL,MXML_DESCEND); //获取字节点 title 

4.1  printf("tirle :%s\r\n",title->child->value.text.string);  //提取title文本内容 

4.2  
    mxml_node_t *year = mxmlFindElement(book,pRoot,"year",NULL,NULL,MXML_DESCEND);

    printf("year :%s\r\n",year->child->value.text.string);   //取出第二个节点

5、    mxmlDelete(pRoot);  //j结束

解析代码：

#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>

#include "mxml.h" 

// 打开并加载xml
mxml_node_t *open_xml(char xml_file[])
{
    FILE *fp = fopen(xml_file, "r");
    if(fp == NULL)
    {
        printf("Open the %s error!\n", xml_file);
        return NULL;
    }
    else
    {        
          printf("Open the %s success!\n", xml_file);
    }

    mxml_node_t *tree = mxmlLoadFile(NULL, fp, MXML_TEXT_CALLBACK);
    fclose(fp);
    if(tree == NULL)
    {
        printf("Load xml file error!\n");
        return NULL;
    }
    else
    {
         printf("Load xml file succ!\n");
    }

    return tree;
}

// 关闭xml
void close_xml(mxml_node_t *tree)
{
    if(tree != NULL)
    {
        mxmlDelete(tree);
    }
}

int main(int argc, const char *argv[])
{
    if(2 != argc)
    {
        fprintf(stdout, "Please statrt this program with %s xmlfilepath!", argv[0]);
        return 1;
    }

    mxml_node_t *pRoot = open_xml(argv[1]);
    if (pRoot == NULL)
    {
        printf("%s can not find element Node!\n",__FILE__,__LINE__);
        return -1;
    }
    // 读取节点配置
    mxml_node_t *book = mxmlFindElement(pRoot, pRoot,"book", "category", NULL,MXML_DESCEND);

   book = mxmlFindElement(pRoot, pRoot,"book", "category", NULL,MXML_DESCEND);
    if (book == NULL)
    {
        close_xml(pRoot);
        printf("%s can not find element Node!\n",__FILE__,__LINE__);
        return -1;
    }

    printf("book: %s\r\n",book->value.element.attrs[0].value);

    mxml_node_t *title = mxmlFindElement(book,pRoot,"title",NULL,NULL,MXML_DESCEND);

    printf("tirle :%s\r\n",title->child->value.text.string);

    mxml_node_t *year = mxmlFindElement(book,pRoot,"year",NULL,NULL,MXML_DESCEND);

    printf("year :%s\r\n",year->child->value.text.string);

    mxmlDelete(pRoot);
    return 0;
}