使用mini-XML库实现xml文件的创建以及解析

昨天简单写了在VxWorks平台应用mini-XML库解析xml文件，以及怎样用。

https://blog.csdn.net/jianzhao6205/article/details/81638197

今天将根据函数手册写一个例程，主要功能为：使用库函数生成一个xml树保存到user.xml文件，注意fopen()函数文件路径的写法（"host:d:\\Tornado2.2\\XML\\user.xml"），对生成的文件进行解析并打印。很简单的一个小程序

#include
#include
#include
#include
#include"D:\Tornado2.2\XML\xmlTest\src\vxw5\config.h"
#include"D:\Tornado2.2\XML\xmlTest\src\mxml.h"

int vmain()
{
    FILE *fp;
    FILE *fptra;
    mxml_node_t *tree;
    mxml_node_t *xml;    /*  */
    mxml_node_t *data;   /*  */
    mxml_node_t *node;   /*  */
    mxml_node_t *group;  /*  */
    /* 创建一个新的文档的版本号 */
    xml = mxmlNewXML("1.0");

    data = mxmlNewElement(xml, "data");

        node = mxmlNewElement(data, "node");
        mxmlElementSetAttrf(node, "id", "0x01");
        mxmlElementSetAttrf(node, "msg", "This is 0x01");

        node = mxmlNewElement(data, "node");
        mxmlElementSetAttrf(node, "id", "0x02");
        mxmlElementSetAttrf(node, "msg", "This is 0x02");

        node = mxmlNewElement(data, "node");
        mxmlElementSetAttrf(node, "id", "0x03");
        mxmlElementSetAttrf(node, "msg", "This is 0x03");

        group = mxmlNewElement(data, "group");

            node = mxmlNewElement(group, "node");
            mxmlElementSetAttrf(node, "id", "0x04");
            mxmlElementSetAttrf(node, "msg", "This is 0x04");

            node = mxmlNewElement(group, "node");
            mxmlElementSetAttrf(node, "id", "0x05");
            mxmlElementSetAttrf(node, "msg", "This is 0x05");

        node = mxmlNewElement(data, "node");
        mxmlElementSetAttrf(node, "id", "0x06");
        mxmlElementSetAttrf(node, "msg", "This is 0x06");

        node = mxmlNewElement(data, "node");
        mxmlElementSetAttrf(node, "id", "0x07");
        mxmlElementSetAttrf(node, "msg", "This is 0x07");
    /* 创建一个文件并将生成的xml保持存到文件中，注意保存路径是已经存在的 */
    fp = fopen("host:d:\\Tornado2.2\\XML\\user.xml", "w");
    mxmlSaveFile(xml, fp, MXML_NO_CALLBACK);
    fclose(fp);
    mxmlDelete(xml);
 
    fptra = fopen("host:d:\\Tornado2.2\\XML\\user.xml", "r");
    tree = mxmlLoadFile(NULL, fptra, MXML_TEXT_CALLBACK);
    fclose(fptra);
    /* 遍历上述创建的文档，并将所有的属性和值打印 */
    for (node = mxmlFindElement(tree, tree, "node", NULL, NULL, MXML_DESCEND);
         node != NULL;
         node = mxmlFindElement(node, tree, "node", NULL, NULL, MXML_DESCEND))
    {
        printf("id = %s, msg = %s \n", 
            mxmlElementGetAttr( node, "id"), mxmlElementGetAttr( node, "msg"));
    }
    printf("\n");
    return 0 ;
}

最终生成的xml文件

用到的资源在这里 https://download.csdn.net/download/jianzhao6205/10601698  

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