C语言 使用libxml解析 生成和解析xml
发布时间：2020-12-16 09:13:43 所属栏目：百科 来源：网络整理
导读：##安装 libxml libxml是一个用来解析XML文档的函数库。它用C语言写成，并且能为多种语言所调用 ###下载libxml 貌似libxml官方已经被河蟹掉了。没关系这里有 libxml的下载地址 2.7.4 ###下载之后解压 tar -zxvf libxml2-2.7.4.tar.gz 安装 cd libxml2-2.7.4 .
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##安装 libxml libxml是一个用来解析XML文档的函数库。它用C语言写成，并且能为多种语言所调用 ###下载libxml 貌似libxml官方已经被河蟹掉了。没关系这里有 libxml的下载地址 2.7.4 ###下载之后解压 tar -zxvf libxml2-2.7.4.tar.gz 安装
##写测试代码 ###生成xml的代码 int main(int argc,char **argv)
{
xmlDocPtr doc = NULL;
xmlNodePtr root_node = NULL,node = NULL,node1 = NULL;
doc = xmlNewDoc(BAD_CAST "1.0");
root_node = xmlNewNode(NULL,BAD_CAST "root");
xmlDocSetRootElement(doc,root_node);
xmlNewChild(root_node,NULL,BAD_CAST "node1",BAD_CAST "content of node1");
node=xmlNewChild(root_node,BAD_CAST "node3",BAD_CAST"node has attributes");
xmlNewProp(node,BAD_CAST "attribute",BAD_CAST "yes");
node = xmlNewNode(NULL,BAD_CAST "node4");
node1 = xmlNewText(BAD_CAST"other way to create content");
xmlAddChild(node,node1);
xmlAddChild(root_node,node);
xmlSaveFormatFileEnc(argc > 1 ? argv[1] : "-",doc,"UTF-8",1);
xmlFreeDoc(doc);
xmlCleanupParser();
xmlMemoryDump();
return(0);
}
编译 ：gcc -I /usr/local/include/libxml2 -L /usr/local/lib -lxml2 test.c -o test 执行./test 解析xml新建待解析xml,文件内容: <?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>
###解析的c语言代码 #include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
void
parseStory (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: %sn",key);
xmlFree(key);
}
cur = cur->next;
}
return;
}
static void parseDoc(char *docname) {
xmlDocPtr doc;
xmlNodePtr cur;
doc = xmlParseFile(docname);
if (doc == NULL ) {
fprintf(stderr,"Document not parsed successfully. n");
return;
}
cur = xmlDocGetRootElement(doc);
cur = xmlDocGetRootElement(doc);
if (cur == NULL) {
fprintf(stderr,"empty documentn");
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;
}
int main(int argc,char **argv) {
char *docname;
if (argc <= 1) {
printf("Usage: %s docnamen",argv[0]);
return(0);
}
docname = argv[1];
parseDoc (docname);
return (1);
}
###编译 gcc keyword.c -o keyword -I/usr/local/include/libxml2 -lxml2 ###运行 ./keyword story.xml 参考博文 http://www.52php.cn/article/p-rdtnxufp-bh.html http://www.cnblogs.com/shanzhizi/archive/2012/07/09/2583739.html （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |