xml保存数据

一、安装libxml2

1、ubuntu安装：Sudo apt-get install Libxml2

2、交叉编译：下载libxml2库并解压，地址：http://xmlsoft.org/sources/libxml2-sources-2.7.8.tar.gz

./configure --host=mipsel-linux --prefix=/opt/libxml2

Make

Make install

编译程序时使用命令：mipsel-linux-gcc test.c -o test -I/opt/libxml2/include/libxml2/ -L/opt/libxml2/lib -lxml2

二、xml保存数据

init.xml文件：

<?xml version="1.0" encoding="UTF-8"?>

<root>

<test>

<testone></testone>

<testtwo>second</testtwo>

<testthree>first</testthree>

</test>

<reference>

<referenceone>aaa</referenceone>

</reference>

</root>

test.c文件：

#include <stdio.h>

#include <stdlib.h>

#include<unistd.h>

#include<fcntl.h>

#include<string.h>

#include <libxml/parser.h>

#include <libxml/tree.h>

struct testdata{

char testone[20];

char testtwo[20];

char testthree[20];

};

int xml_parse(struct testdata testsave)

{

xmlDocPtr doc; //定义解析文档指针

xmlNodePtr curNode,detail; //定义结点指针(你需要它为了在各个结点间移动)

xmlChar *szKey; //临时字符串变量

char *szDocName;

szDocName = "init.xml";

doc = xmlReadFile(szDocName,"UTF-8",XML_PARSE_RECOVER); //解析文件

if (NULL == doc)

{

fprintf(stderr,"Document not parsed successfully. \n");

return -1;

}

curNode = xmlDocGetRootElement(doc); //确定文档根元素

xmlNodePtr propNodePtr = curNode;

while(curNode != NULL)

{

if(xmlStrcasecmp(curNode->name,BAD_CAST"test")==0){

for(detail=curNode->children;detail;detail=detail->next){

if(xmlStrcasecmp(detail->name,BAD_CAST"testone")==0)

{

xmlNodeSetContent(detail, BAD_CAST testsave.testone);

}

else if(xmlStrcasecmp(detail->name,BAD_CAST"testtwo")==0)

{

xmlNodeSetContent(detail, BAD_CAST testsave.testtwo);

}

else if(xmlStrcasecmp(detail->name,BAD_CAST"testthree")==0)

{

xmlNodeSetContent(detail, BAD_CAST testsave.testthree);

}

}

}

curNode = curNode->next;

}

int nRel = xmlSaveFile("init.xml",doc);

xmlFreeDoc(doc);

return 1;

}

int main(void)

{

struct testdata testsave={"first","second","third"};

xml_parse(testsave);

return 0;

}

编译test.c：gcc test.c -o test -lxml2

执行test后，init.xml:

<?xml version="1.0" encoding="UTF-8"?>

<root>

<test>

<testone>first</testone>

<testtwo>second</testtwo>

<testthree>third</testthree>

</test>

<reference>

<referenceone>aaa</referenceone>

</reference>

</root>