上一篇是获取了节点的值，这一次获取属性的值：
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>
<reference uri="storyuri_example1"/></story>例子如下：
1 #include <stdio.h>
2 #include <string.h>
3 #include <stdlib.h>
4 #include <libxml/xmlmemory.h>
5 #include <libxml/parser.h>
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