c语言读写xml
1. c语言 如何读取xml文件中的数据并存入一个结构体中
一般是用第三方比如TinyXml，或者你自己实现。
2. 怎么用c语言编一个词法分析器
简而言之就是先画一个状态图，然后根据图来编码就行
一个简单的xml的词法分析器供参考
#include
<stdio.h>
#include
<stdlib.h>
#include
<string.h>
typedef
struct
{
char
*p;
int
len;
}
xml_Text;
typedef
enum
{
xml_tt_U,
/*
Unknow
*/
xml_tt_H,
/*
Head
<?xxx?>*/
xml_tt_E,
/*
End
</xxx>
*/
xml_tt_B,
/*
Begin
<xxx>
*/
xml_tt_BE,
/*
Begin
End
<xxx/>
*/
xml_tt_T
/*
Text
xxx
*/
}
xml_TokenType;
typedef
struct
{
xml_Text
text;
xml_TokenType
type;
}
xml_Token;
int
xml_initText(xml_Text
*pText,
char
*s)
{
pText->p
=
s;
pText->len
=
strlen(s);
return
0;
}
int
xml_initToken(xml_Token
*pToken,
xml_Text
*pText)
{
pToken->text.p
=
pText->p;
pToken->text.len
=
0;
pToken->type
=
xml_tt_U;
return
0;
}
int
xml_print(xml_Text
*pText)
{
int
i;
for
(i
=
0;
i
<
pText->len;
i++)
{
putchar(pText->p[i]);
}
return
0;
}
int
xml_println(xml_Text
*pText)
{
xml_print(pText);
putchar('\n');
return
0;
}
int
xml_getToken(xml_Text
*pText,
xml_Token
*pToken)
{
char
*start
=
pToken->text.p
+
pToken->text.len;
char
*p
=
start;
char
*end
=
pText->p
+
pText->len;
int
state
=
0;
pToken->text.p
=
p;
pToken->type
=
xml_tt_U;
for
(;
p
<
end;
p++)
{
switch(state)
{
case
0:
switch(*p)
{
case
'<':
state
=
1;
break;
default:
state
=
7;
break;
}
break;
case
1:
switch(*p)
{
case
'?':
state
=
2;
break;
case
'/':
state
=
4;
break;
default:
state
=
5;
break;
}
break;
case
2:
switch(*p)
{
case
'?':
state
=
3;
break;
default:
state
=
2;
break;
}
break;
case
3:
switch(*p)
{
case
'>':
pToken->text.len
=
p
-
start
+
1;
pToken->type
=
xml_tt_H;
return
1;
default:
state
=
-1;
break;
}
break;
case
4:
switch(*p)
{
case
'>':
pToken->text.len
=
p
-
start
+
1;
pToken->type
=
xml_tt_E;
return
1;
default:
state
=
4;
break;
}
break;
case
5:
switch(*p)
{
case
'>':
pToken->text.len
=
p
-
start
+
1;
pToken->type
=
xml_tt_B;
return
1;
case
'/':
state
=
6;
break;
default:
state
=
5;
break;
}
break;
case
6:
switch(*p)
{
case
'>':
pToken->text.len
=
p
-
start
+
1;
pToken->type
=
xml_tt_BE;
return
1;
default:
state
=
-1;
break;
}
break;
case
7:
switch(*p)
{
case
'<':
p--;
pToken->text.len
=
p
-
start
+
1;
pToken->type
=
xml_tt_T;
return
1;
default:
state
=
7;
break;
}
break;
default:
pToken->text.len
=
p
-
start
+
1;
pToken->type
=
xml_tt_T;
return
1;
}
}
return
0;
}
int
main()
{
int
ret
=
0;
xml_Text
xml;
xml_initText(&xml,
"<?xml?><root>
ss
<haha>hoho</haha></root>");
xml_Token
token;
xml_initToken(&token,
&xml);
ret
=
xml_getToken(&xml,
&token);
printf("ret=%d;text=",ret);
xml_print(&token.text);
printf(";type=%d;\n\n",
token.type);
ret
=
xml_getToken(&xml,
&token);
printf("ret=%d;text=",ret);
xml_print(&token.text);
printf(";type=%d;\n\n",
token.type);
ret
=
xml_getToken(&xml,
&token);
printf("ret=%d;text=",ret);
xml_print(&token.text);
printf(";type=%d;\n\n",
token.type);
ret
=
xml_getToken(&xml,
&token);
printf("ret=%d;text=",ret);
xml_print(&token.text);
printf(";type=%d;\n\n",
token.type);
ret
=
xml_getToken(&xml,
&token);
printf("ret=%d;text=",ret);
xml_print(&token.text);
printf(";type=%d;\n\n",
token.type);
ret
=
xml_getToken(&xml,
&token);
printf("ret=%d;text=",ret);
xml_print(&token.text);
printf(";type=%d;\n\n",
token.type);
ret
=
xml_getToken(&xml,
&token);
printf("ret=%d;text=",ret);
xml_print(&token.text);
printf(";type=%d;\n\n",
token.type);
return
0;
}
3. c语言如何调用xml的接口函数
/***************
<?xmlversion="1.0"encoding="utf-8"?>
<Cases>
<case>
<No>001</No>
<CopyFilesrc="C: est.txt"dest="D: est.txt"></CopyFile>
</case>
<case>
<No>002</No>
<DelFile>C: est.txt</DelFile>
</case>
</Cases>
*******************/
//我们用MFC来读取上述xml，代码如下：
voidReadXml(CStringstrXmlPath)
{
MSXML2::IXMLDOMDocumentPtrpDoc;
::CoInitialize(NULL);
HRESULThr=pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument40));
if(!SUCCEEDED(hr))
{
MessageBox(_T("创建DOMDocument对象失败。 请检查运行环境"),_T("错误"),MB_ICONERROR);
return;
}
//读取xml
pDoc->put_async(VARIANT_FALSE);
VARIANT_BOOLbhr=pDoc->load((_variant_t)strXmlPath);
if(bhr!=VARIANT_TRUE){
MessageBox(_T("无法正确读取xml文件"),_T("错误"),MB_ICONERROR);
return;
}
//根节点取得
MSXML2::IXMLDOMElementPtrroot=pDoc->documentElement;
//取得根节点的名字
_variant_tstrRootName=root->nodeName;
_bstr_twstrRootName(strRootName.bstrVal);
MSXML2::IXMLDOMNodeListPtrnodeList=root->GetchildNodes();//cases
//解析cases的子节点
ReadCases(nodeList);
}
voidReadCases(MSXML2::IXMLDOMNodeListPtrnodeList)
{
intilength=nodeList->Getlength();
for(intnodeCount=0;nodeCount<ilength;nodeCount++){
MSXML2::IXMLDOMNodePtrnodePtr=nodeList->nextNode();
_variant_tstrNodeName=nodePtr->GetnodeName();
_variant_tstrNodeValue=nodePtr->GetnodeValue();
//读取case节点下的子节点
ReadCase(nodePtr->GetchildNodes());
}
}
voidReadCase(MSXML2::IXMLDOMNodeListPtrnodeList)
{
CStringstrLogInfo;
strLogInfo.Empty();
CStringstrNo;//case编号
CStringstrSrcFile;//源文件
CStringstrDestFile;//目标文件
for(intnodeCount=0;nodeCount<nodeList->Getlength();nodeCount++)
{
MSXML2::IXMLDOMNodePtrnodePtr=nodeList->nextNode();
_variant_tstrCaseNodeName=nodePtr->GetnodeName();
_variant_tstrCaseNodeValue=nodePtr->Gettext();
BSTRbStrTemp=strCaseNodeName.bstrVal;
CStringstrTemp=CString(bStrTemp);
SysFreeString(bStrTemp);
CStringstrNodeName=strTemp;
//节点的值，如何取得？
if(0==strNodeName.CompareNoCase(_T("NO")))
{
strNo=(BSTR)strCaseNodeValue.pbstrVal;
//取得的值可以打印出来
printf(strNo);
}
//节点有属性值，该怎么处理？
elseif(0==strNodeName.CompareNoCase(_T("CopyFile")))
{
strSrcFile.Empty();
strDestFile.Empty();
//取得节点的属性值
MSXML2::=nodePtr->Getattributes();
for(intj=0;j<pDOMAttrList->Getlength();j++)
{
MSXML2::IXMLDOMNodePtrpDOMAttr=pDOMAttrList->Getitem(j);
//取得源文件路径
if(CompareNoCase((char*)pDOMAttr->GetnodeName(),_T("src")))
{
strSrcFile=pDOMAttr->GetnodeTypedValue();
//取得目标文件路径
}elseif(CompareNoCase((char*)pDOMAttr->GetnodeName(),_T("dest")))
{
strDestFile=pDOMAttr->GetnodeTypedValue();
}
CopyFile(strSrcFile,strDestFile,FALSE);
}
elseif(0==strNodeName.CompareNoCase(_T("DelFile")))
{
strDestFile.Empty();
strDestFile=CString((BSTR)strCaseNodeValue.pbstrVal);
DeleteFile(strDestFile);
}
}
}
//为了能够让MFC认识MSXML2，我们需要引入相应的dll，代码如下;
#import"msxml4.dll"
4. 有没有C语言的对xml文件读写操作的API
libxml2就可以啊
Libxml2 是一个xml c语言版的解析器，本来是为Gnome项目开发的工具，是一个基于MIT License的免费开源软件。它除了支持c语言版以外，还支持c++、PHP、Pascal、Ruby、Tcl等语言的绑定，能在Windows、Linux、Solaris、MacOsX等平台上运行。功能还是相当强大的，相信满足一般用户需求没有任何问题。具体的介绍就参考 http://xmlsoft.org/
5. C语言xml解析
把所有的数据当做一个字符串
收到数据后先strstr(buffer,"<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
如果返回的是NULL则表示没有这段 退出
buffer是你收到的数据起始地址
6. 怎么用c语言解析xml文件
我上次才给人写过
xml文件内容
<?xml version="1.0" encoding="UTF-8" ?>
- <aicomoa_response>
- <country_list>
- <country>
<id>7</id>
<pid>0</pid>
<continent_id>1</continent_id>
<guohao>93</guohao>
<cntitle>阿富汗</cntitle>
<entitle>Afghanistan</entitle>
<hztitle>阿富汗</hztitle>
<jptitle>アフガニスタン</jptitle>
<kotitle>??????</kotitle>
<jp_pinyin>ア</jp_pinyin>
<pinyin>AFuHan</pinyin>
<sid>0</sid>
<jibie>1</jibie>
</country>
- <country>
<id>8</id>
<pid>0</pid>
<continent_id>2</continent_id>
<guohao>355</guohao>
<cntitle>阿尔巴尼亚</cntitle>
<entitle>Albania</entitle>
<hztitle>阿尔巴尼亚</hztitle>
<jptitle>アルバニア</jptitle>
<kotitle />
<jp_pinyin>ア</jp_pinyin>
<pinyin>AErBaNiYa</pinyin>
<sid>0</sid>
<jibie>1</jibie>
</country>
</country_list>
</aicomoa_response>
运行结果
Info[0]=[id:7|pid:0|continent_id:1|guohao:93|cntitle:阿富汗|entitle:Afghanistan|
hztitle:阿富汗|jptitle:アフガニスタン|kotitle:??????|jp_pinyin:ア|pinyin:AFuHan|
sid:0|jibie:1|]
Info[1]=[id:7|pid:0|continent_id:1|guohao:93|cntitle:阿富汗|entitle:Afghanistan|
hztitle:阿富汗|jptitle:アフガニスタン|kotitle:??????|jp_pinyin:ア|pinyin:AFuHan|
sid:0|jibie:1|]
Press any key to continue
代码
#include <stdio.h>
#include <string.h>
main()
{
int i=0;
FILE *fp;
char szFileBuff[1024] = {0}, szBuff[100][1024];
char id[10] = {0}, pid[10] = {0}, continent_id[10] = {0}, guohao[10] = {0},
cntitle[64]= {0},entitle[64]= {0},hztitle[64] = {0},jptitle[64] = {0},
kotitle[64] = {0},jp_pinyin[64] = {0}, pinyin[64] = {0},sid[10] = {0},jibie[10] = {0};
char *lFirst, *lEnd;
fp = fopen("country.txt","r");
if (fp==NULL)
{
printf("read XML file error!\n");
}
while(fgets(szFileBuff, 1023, fp))
{
if ((lFirst = strstr(szFileBuff, "<id>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</id>");
memcpy(id, lFirst + 4, lEnd - lFirst - 4);
}
if ((lFirst = strstr(szFileBuff, "<pid>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</pid>");
memcpy(pid, lFirst + 5, lEnd - lFirst - 5);
}
if ((lFirst = strstr(szFileBuff, "<continent_id>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</continent_id>");
memcpy(continent_id, lFirst + 14, lEnd - lFirst - 14);
}
if ((lFirst = strstr(szFileBuff, "<guohao>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</guohao>");
memcpy(guohao, lFirst + 8, lEnd - lFirst - 8);
}
if ((lFirst = strstr(szFileBuff, "<cntitle>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</cntitle>");
memcpy(cntitle, lFirst + 9, lEnd - lFirst - 9);
}
if ((lFirst = strstr(szFileBuff, "<entitle>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</entitle>");
memcpy(entitle, lFirst + 9, lEnd - lFirst - 9);
}
if ((lFirst = strstr(szFileBuff, "<hztitle>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</hztitle>");
memcpy(hztitle, lFirst + 9, lEnd - lFirst - 9);
}
if ((lFirst = strstr(szFileBuff, "<jptitle>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</jptitle>");
memcpy(jptitle, lFirst + 9, lEnd - lFirst - 9);
}
if ((lFirst = strstr(szFileBuff, "<kotitle>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</kotitle>");
memcpy(kotitle, lFirst + 9, lEnd - lFirst - 9);
}
if ((lFirst = strstr(szFileBuff, "<jp_pinyin>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</jp_pinyin>");
memcpy(jp_pinyin, lFirst + 11, lEnd - lFirst - 11);
}
if ((lFirst = strstr(szFileBuff, "<pinyin>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</pinyin>");
memcpy(pinyin, lFirst + 8, lEnd - lFirst - 8);
}
if ((lFirst = strstr(szFileBuff, "<sid>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</sid>");
memcpy(sid, lFirst + 5, lEnd - lFirst - 5);
}
if ((lFirst = strstr(szFileBuff, "<jibie>")) != NULL)
{
lEnd = strstr(lFirst + 1, "</jibie>");
memcpy(jibie, lFirst + 7, lEnd - lFirst - 7);
}
if ((lFirst = strstr(szFileBuff, "</country>")) != NULL)
{
sprintf(szBuff[i],"id:%s|pid:%s|continent_id:%s|guohao:%s|cntitle:%s|entitle:%s|hztitle:%s|jptitle:%s|kotitle:%s|jp_pinyin:%s|pinyin:%s|sid:%s|jibie:%s|",
id,pid,continent_id,guohao,cntitle,entitle,hztitle,jptitle,kotitle,jp_pinyin, pinyin,sid,jibie);
printf("Info[%d]=[%s]\n",i++, szBuff);
}
}
fclose(fp);
}
补充：你这个就说得太笼统了，
1 你上传的xml文件具体格式是什么？
2 要在网页上显示的具体格式是什么
3 你根本不知道怎么做 所以也不知道怎么问
我不用关心你的c语言的cgi吧？我才不管是用什么上传的
只有你说的嵌入式三个字 给我一点有用信息 就是解析这个xml用插件恐怕是不行
只能C语言
4 我现在只要求你的xml文件格式和 网页上要显示哪些xml中解析出来的信息
只要知道这些 我只需要在我的程序上加上生成html文件就行了
7. 怎么用C语言写一个简单的XML文件
用VC吧，下面有一个例子，你参照下：
voidCreateXml()
{
CoInitialize(NULL);
//创建文档
MSXML2::IXMLDOMDocument2PtrpXMLDoc=NULL;
//创建DOMDocument对象
HRESULThr=pXMLDoc.CreateInstance(__uuidof(MSXML2::DOMDocument));
if(!SUCCEEDED(hr))
{
return;
}
//
MSXML2::=NULL;
pXMLProc=pXMLDoc->createProcessingInstruction("xml","version='1.0'encoding='UTF-8'");
_variant_tvNullVal;
vNullVal.vt=VT_NULL;
pXMLDoc->insertBefore(pXMLProc,vNullVal);
//创建根结点
_variant_tvarNodeType((short)MSXML2::NODE_ELEMENT);
MSXML2::IXMLDOMNodePtrpXMLNodeRoot=NULL;
pXMLNodeRoot=pXMLDoc->createNode(varNodeType,_T("Cases"),_T(""));
//添加根结点
pXMLDoc->appendChild(pXMLNodeRoot);
//创建并添加下级结点
MSXML2::IXMLDOMNodePtrpXMLNodeNode=NULL;
pXMLNodeNode=pXMLNodeRoot->appendChild(pXMLDoc->createElement(_T("Case")));
//创建下级元素结点
MSXML2::IXMLDOMElementPtrpXMLEle=NULL;
pXMLEle=pXMLDoc->createElement(_T("CopyFile"));
//创建并设置下级结点属性
MSXML2::IXMLDOMAttributePtrpXMLAttr=NULL;
pXMLAttr=pXMLDoc->createAttribute(_T("src"));
pXMLAttr->nodeTypedValue="C:\test.txt";
pXMLEle->attributes->setNamedItem(pXMLAttr);
pXMLAttr=pXMLDoc->createAttribute(_T("dest"));
pXMLAttr->nodeTypedValue="D:\Test.txt";
pXMLEle->attributes->setNamedItem(pXMLAttr);
//添加元素结点
pXMLNodeNode->appendChild(pXMLEle);
MSXML2::IXMLDOMElementPtrpXMLEle1=NULL;
pXMLEle1=pXMLDoc->createElement(_T("DelFile"));
pXMLEle1->appendChild(pXMLDoc->createTextNode("C:\test.txt"));
//添加元素结点
pXMLNodeNode->appendChild(pXMLEle1);
//保存文档
pXMLDoc->save(_T("d:\Test.xml"));
}
效果如下：
<?xmlversion="1.0"encoding="UTF-8"?>
<Cases>
<Case>
<CopyFilesrc="C: est.txt"dest="D:Test.txt"/>
<DelFile>C: est.txt</DelFile>
</Case>
</Cases>
为了能够让MFC认识MSXML2，我们需要引入相应的dll，代码如下;
#import "msxml4.dll"