<?xml versin='1.0' encoding='UTF-8'?><root><student><name>xioaming</name><age>20</age></student></root>

假设从环境变量中读取到的请求字符串为xmlreq,并将之存到内存;

xmlDocPtr doc;

int xmlreq_len = 0;

xmlNodePtr root,first_node,second_node;

char *first_label_name;

char *second_label_name;

char *sec_label_content = NULL;

doc = xmlReadMemory(xmlreq,xmlreq_len,NULL,0);

root = xmlDocGetRootElement(doc);

first_node = root->children;

first_label_name = first_node->name;

second_node = first_node->next;

second_label_name = second_node->name;

sec_label_content = xmlNodeGetContent(second_node);