libxml2 的一个简单示例

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该示例来自：http://www.xmlsoft.org/

xml文件如下：

<?xml version="1.0"?><story><storyinfo><author>John Fleck</author><datewritten>June 2, 2002</datewritten><keyword>example keyword</keyword></storyinfo><body><headline>This is the headline</headline><para>This is the body text.</para></body></story>

解析代码代码如下：

#include <stdio.h>#include <string.h>#include <stdlib.h>#include <libxml/xmlmemory.h>#include <libxml/parser.h>voidparseStory (xmlDocPtr doc, xmlNodePtr cur) {xmlChar *key;cur = cur->xmlChildrenNode;while (cur != NULL) {    if ((!xmlStrcmp(cur->name, (const xmlChar *)"keyword"))) {    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);    printf("keyword: %s\n", key);    xmlFree(key);     }cur = cur->next;}    return;}static voidparseDoc(char *docname) {xmlDocPtr doc;xmlNodePtr cur;doc = xmlParseFile(docname);if (doc == NULL ) {fprintf(stderr,"Document not parsed successfully. \n");return;}cur = xmlDocGetRootElement(doc);if (cur == NULL) {fprintf(stderr,"empty document\n");xmlFreeDoc(doc);return;}if (xmlStrcmp(cur->name, (const xmlChar *) "story")) {fprintf(stderr,"document of the wrong type, root node != story");xmlFreeDoc(doc);return;}cur = cur->xmlChildrenNode;while (cur != NULL) {if ((!xmlStrcmp(cur->name, (const xmlChar *)"storyinfo"))){parseStory (doc, cur);} cur = cur->next;}xmlFreeDoc(doc);return;}intmain(int argc, char **argv) {char *docname;if (argc <= 1) {printf("Usage: %s docname\n", argv[0]);return(0);}docname = argv[1];parseDoc (docname);return (1);}

编译的Makefile如下：

test:example.cgcc -Wall -o test example.c -I /usr/include/libxml2 -L /usr/lib -lxml2clean:rm test

代码通过解析前面的story.xml文件，然后打印出这么一句话：

keyword: example keyword

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