libxml2操作2-获取属性值

上一篇是获取了节点的值，这一次获取属性的值：

文件如下：

  
    John Fleck
    June 2, 2002
    example keyword
  
  
    This is the headline
    This is the body text.
  

 例子如下：

 1 #include 
  2 #include 
  3 #include 
  4 #include 
  5 #include 
  6 
  7 void
  8 getReference (xmlDocPtr doc, xmlNodePtr cur) {
  9   printf("enter function getReference\r\n");
 10   xmlChar *uri;
 11   cur = cur->xmlChildrenNode;
 12   while (cur != NULL) {
 13       if ((!xmlStrcmp(cur->name, (const xmlChar *)"reference"))) {
 14         uri = xmlGetProp(cur, "uri");
 15         printf("uri: %s\n", uri);
 16         xmlFree(uri);
 17       }
 18       cur = cur->next;
 19   }
 20   printf("exit function getReference\r\n");
 21   return;
 22 }
 23 
 24 
 25 void
 26 parseDoc(char *docname) {
 27 
 28   xmlDocPtr doc;
 29   xmlNodePtr cur;
 30 
 31   doc = xmlParseFile(docname);
 32 
 33   if (doc == NULL ) {
 34     fprintf(stderr,"Document not parsed successfully. \n");
 35     return;
 36   }
 37 
 38   cur = xmlDocGetRootElement(doc);
 39 
 40   if (cur == NULL) {
 41     fprintf(stderr,"empty document\n");

编译如下：

root@mkx:~/workspace/libxml2/learn.20211112# gcc -o example_Retrieviing example_Retrieviing.c -L/usr/local/lib -lxml2 -L/usr/local/lib -lz -lm -ldl -I/usr/local/include/libxml2

运行如下：

root@maokx:~/workspace/libxml2/learn.20211112# ./example_Retrieviing story.xml
enter function getReference
uri: storyuri_example1
exit function getReference